14th International Laser Processing and Systems Conference

Shanghai Jumeirah Himalayas Hotel , Shanghai New International Expo Center

General Information

  • Date: 20 – 21 March 2019 
  • Venue: Shanghai Jumeirah Himalaya Hotel&Shanghai New International Expo Center
  • Conference language:  Chinese/English (Simultaneous interpretation available)
  • Organizers:

Chinese Optical Society-Laser Processing Committee (COS-LPC)

Messe München

Laser Institute of America (LIA)

General Conference Chairmen:

Prof. Youliang Wang, Chinese Optical Society - Laser Processing Committee

Prof. Reinhart Poprawe, Laser Institute, Fraunhofer Institute, Aachen, Germany

Executive chairman of the conference:

             Prof. Wang Huaming, Academician of Chinese Academy of Engineering, Beijing University of Aeronautics and Astronautics

             Pro. Lu Yongfeng, University of Nebraska-Lincoln, USA

             Prof. Gu Dongdong, Nanjing University of Aeronautics and Astronautics

The Themes of the Conference

  • New laser beam sources, systems and applications
  • Ultrafast laser technologies and applications
  • High-power laser technologies and applications
  • Laser additive manufacturing and 3D printing
  • Laser surface modification and functionalization
  • Laser surface engineering and remanufacturing
  • Laser processes and systems for materials processing (laser welding, cutting, machining, polishing, cleaning, etc.)
  • Micro/nano laser technologies and processes
  • Simulation and modelling of laser processes

 Target Audience

  • Laser industry experts, executives, marketing and marketing executives
  • Industry supervisors and technicians applying laser technology
  • Relevant government departments and industry investors
  • Laser and optoelectronics companies
  • Laser system integrators
  • Research institutes such as institutions of higher learning/scientific research institutions
  • Laser applications: automotive manufacturing, high-end and intelligent manufacturing, precision machining, electronics/semiconductor industry, metal/material processing, shipbuilding, rail transit, aerospace, laser additive manufacturing (3D printing), defense industry
  • Others (services/training/software, etc.)

Speakers and speeches of LPC 2018 (Excerpt)

  • Prof. Dr. Reinhart Poprawe, Director, Fraunhofer Institute for Laser Technology ILT
  • Prof. Dr. Andreas Ostendorf, Vice Rector for Research, Ruhr-University Bochum

        Keynote speech: Laser metal deposition (LMD) and in-situ alloying of powder blends

  • Dr. Rajesh Patel, Director of Applications Engineering, Spectra-Physics Lasers, MKS Instruments, Inc.

        Keynote speech: Laser Micromachining: Nano to Pico to Femto Second Pulses

  • Prof. Dr. WONG Chee How, Associate Dean (Academic), College of Engineering, Nanyang Technological University

        Keynote speech: 3D printing: past, present and future

•Prof. Dr. Dongdong Gu, Vice Dean, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautic

        Keynote speech: Laser-based Additive Manufacturing Technologies for Aerospace Applications: Status, Challenges and Future Development

  •  Prof. Dr. Michael Schmidt, Director, Photonics Institute, Friedrich- Alexander University of Erlangen-Nuremberg
  • Prof. Dr. Stefan Kaierle, Director, Material and Processing Unit, Hanover Laser Center
  •  Mike.Wang, Vice General Manager & CTO, Suzhou Everbright Photonics Co., LTD

         Keynote speech: High Power Semiconductor Lasers for Various Applications

Guest Greeting Card

Contact:

Chinese Optical Society-Laser Processing Committee (COS-LPC)

Ms. Yi Xie

Tel: +86-(0)21-64227838

E-mail: xieyi@chinalaser.org

 

Messe Muenchen Shanghai Co., Ltd.

Ms.Gloria.Xu

Tel: +86-(0)21-2020 5520

E-mail: Gloria.Xu@mm-sh.com

  • Opening Ceremony/Plenary Session

Time Topic Guest
Time TopicWelcome Speech by Messe München Guest

Dr. Martin Lechner
Messe Muenchen GmbH Executive Director of Business Unit New Technologies

Time TopicWelcome Speech by General Conference Co-Chair Guest

Prof. Reinhart Poprawe
Fraunhofer ILT/ LLT RWTH-Aachen University Director

Time TopicWelcome Speech and brief summary on Chinese laser industry by General Conference Co-Chair Guest

Prof. Youliang Wang
COS-LPC President

Time TopicLatest advancements in Additive Manufacturing and Ultrafast Laser Ablation Guest

Prof. Reinhart Poprawe
Fraunhofer Institute for Laser Technology ILT Director

Time TopicSpectrally, Spatially, and Temporally Controlled Laser Processing and Characterization Guest

Prof. Dr. Yongfeng Lu
Department of Electrical and Computer Engineering, University of Nebraska-Lincoln

Time TopicAdvanced manufacturing technologies using ultra-short pulsed laser sources Guest

Dr. Frank Zibne
Fraunhofer Institute for Laser Technology, Germany

Time TopicHigh-Performance Welding of Copper with Green Multi-kW Continuous-wave Disk Lasers Guest

Dr. Matthias Koitzsch
TRUMPF(China)Co., Ltd.

Time TopicLow-coherence interferometry in laser processing: a sensor approach setting new standards in industrial applications Guest

Dr. Markus Kogel-Hollacher
Precitec Optronik GmbH

Time TopicLunch Break Guest

Time TopicUltrafast laser induced nanoscale photothermal and photomechanical internactions and their applications Guest

Prof. Dr. Gary. J Cheng
School of Industrial Engineering and School of Materials Engineering in Purdue University Professor

Time TopicNew trend of the development and applications of ultrashort pulsed lasers Guest

Prof. Dr. Zhigang Zhang
Institute of Quantum Electronics, Peking University Professor

Time TopicApplication and Development of Laser Addition Technology in COMAC Guest

Xiaofeng Sun
Xiaofeng Sun,Shanghai Aircraft Manufacturing Co., Ltd.

Time TopicHigh power density line laser application in advanced manufacture Guest

Victor Liu
Focuslight Technologies Inc.

Time TopicCoffee Break Guest

Time TopicProgress of advanced laser macro-/micromanufacturing in SIOM Guest

Prof. Weibiao Chen
Shanghai Institute of Optics and Fine Mechanics, the Chinese Academy of Sciences

Time TopicFiber Lasers for Glass and Sapphire Drilling Guest

Dr.Shibin Jiang
American AdValue Photonics Company CEO

Time TopicLaser micro-machining of Glass and it's applications Guest

Xuehui Wang
Wuhan Huagong Laser Engineering Co., Ltd.

Time TopicUltrafast fiber lasers and their applications in material fine processing Guest

Dr.Zhenlin Liu
Wuhan Huaray Precision Laser Co.,Ltd.

  • Conference 1 Advanced Laser Technologies and Innovative Applications

    Host: Prof.Zhengyan Li Huazhong University of Science and Technology Prof. Xiahui Tang Huazhong University of Science and Technology
Time Topic Guest
Time TopicFemtosecond Fiber Lasers and Their Applications in Advanced Digital Photonic Manufacturing Guest

Dr.Xiangdong Cao
Qingdao Free Trade Laser Technology Co.,Ltd

Time TopicThe Development and Application of Laserline Bluediodelaser Guest

Markus Ruetering
Laserline Gesellschaft für Entwicklung und Vertrieb von Diodenlasern mbH

Time TopicFast, High Quality Glass Cutting with Tailored Picosecond Laser Pulses and Bessel Beam Optics Guest

Jim Bovatsek
MKS Instruments, Inc.

Time TopicHigh-power diode laser beam shaping and its application Guest

Prof.Xiahui Tang
Huazhong University of Science and Technology Professor

Time TopicAdvanced laser technology and systems Guest

Prof. Yong Cheng
Ordannce NCO Academy,Army Engineering University of PLA Professor

Time TopicDiode laser chips and fiber coupled modules for fiber laser and solid state laser pumping, as well as material processing applications Guest

Dr. Jun Wang
Suzhou Everbright Photonics Co., Ltd.

Time TopicHigh efficiency slab Tm:YAP laser dual-end-pumped by fiber coupled laser diodes Guest

Ya Wen
Changchun University of Science and Technology

Time TopicLunch Break Guest

Time TopicLaser surface micro-nano manufacturing technology and application Guest

Prof. Xiaozhu Xie
Guangdong University of Technology Professor

Time TopicRecent Product & Application developments of IPG laser Guest

Jing Zhang
IPG(Beijing)Fiber Laser Technology CO.,LTD. Manager

Time TopicScalable Microprocessing Guest

Dr. Burkhard Fechner
Coherent LaserSystems GmbH & Co. KG

Time TopicVolume production and optic design of micro-optics components on polymer. How to achieve best results in the shortest timeframe Guest

Dr. Nicolaus Hettler
CDA GmbH

Time TopicEfficiency enhanced high quality helical drilling and cutting for industrial applications Guest

Dr. Chao He
Fraunhofer Institute for Laser Technology, Germany

Time TopicIntelligent Production Line Technology Application and Trend Guest

Letian Yang
HGTECH COMPANY LIMITED

Time TopicMicrostructure and mechanical properties of laser welded Al-Si coated hot-press-forming steel joints Guest

Xi Chen
Harbin Institute of Technology

Time TopicMetal rust removal by MOPA-based fiber laser in nanosecond regime Guest

Qingpeng Huang
Guandong University of Technology

Time TopicNanosecond laser cleaning of marine micro-biofoulings from the surface of aluminium alloy Guest

Ze Tian
Harbin Institute of Technology

Time TopicSuper-fine Micro-processing of Metal Based Devices by Femtosecond Laser Guest

Shuang Wu
ShenZhen Inno-Laser Technology Co.,Ltd.

Time TopicThe preparation of metallic glasses/crystalline composite coatings by laser cladding with enhanced corrosion resistance Guest

Liwei Hu
China Academy Of Engineering Physics

  • Conference 2 Laser Surface Modification Technology and Laser Addition Manufacturing Technology

    Host: Associate Prof. Qunli Zhang Zhejiang University of Technology Associate Prof. Chengyun Cui Jiangsu University
Time Topic Guest
Time TopicExtreme High-speed Laser Material Deposition (EHLA) Guest

Thomas Schopphoven
Fraunhofer Institute for Laser Technology, Germany

Time TopicPlastic deformation behaviour and formation mechanism of gradient nanostructure in titanium alloy subjected to laser shock peening Guest

Prof. Jinzhong Lu
Jiangsu University

Time TopicCharacterization of high-speed laser-clad coating and its application Guest

Xuhao Wu
Highlaser Opto-electronic technology CO. LTD

Time TopicCu-matrix composite coatings prepared by supersonic laser deposition Guest

Dr.Bo Li
Zhejiang University of Technology

Time TopicInfluence of austenitizing temperature on microstructure and mechanical properties of laser additive manufactured 300M steel Guest

Fenggang Liu
Xi'an University

Time TopicStudy on Process and Properties of Laser Cladded Fe-based Wear Resistant Coatings on Inner Wall of Barrel Guest

Zhongyao Cai
Zhejiang University of Technology

Time TopicEffects of Y2O3 on corrosion behavior of 304 stainless steel after laser surface modification in high temperature high pressure water Guest

Mengnan Liu
University of Science and Technology Liaoning

Time TopicStudy on the Technology of Application of Laser Surface Cladding in the Industry of Roller Repair Guest

Sai Li
Liaoning Yinghuan Technology Co., Ltd

Time TopicLunch Break Guest

Time TopicRegulation of bicrystalline structure and its mechanical property in Inconel 718 superalloy fabricated by laser hybrid manufacturing Guest

Associate Prof.Fencheng Liu
Nanchang Hangkong University

Time TopicMicrostructure and Properties in diode Laser Melting Deposited AlSi10Mg Guest

Baohua Zhu
Welding Light Source Research Institute of Han's Laser Technology Industry Group Co., Ltd. Dean

Time TopicMicrostructures of ODS-FeCrAl Alloys Produced Using Laser Melting Deposition Process Guest

Wumei Dong
China Academy Of Engineering Physics

Time TopicEpitaxial laser melting deposition of Inconel 718 on directionally solidified nickel-based superalloys: epitaxy and stray grain formation Guest

Nannan Lu
Harbin Institute of Technology

Time TopicAdditive Manufacturing of high-strength CrMnFeCoNi-based High-Entropy Alloys with TiC addition Guest

Abdukadir Amar
China Academy Of Engineering Physics

Time TopicStudy on mechanical and corrosion properties of amorphous reinforced stainless steel composites in-situ prepared by laser additive manufacturing Guest

Associate Prof.Bo Song
Huazhong University of Science and Technology

Time TopicMicrostructure characterization on 3D-printed Ti-55531 alloy manufactured by Laser Engineered Net Shaping (LENS) Guest

Prof. Lechun Xie
Wuhan University of Technology Professor

Time TopicEffects of Process Parameters on Microstructures and Mechanical Properties of Laser Melting Deposited CrMnFeCoNi High Entropy Alloys Guest

Shuo Xiang
China Academy Of Engineering Physics

Time TopicEffect of energy density on formability, microstructure and micro-hardness of selective laser melted Sc- and Zr- modified 7075 aluminum alloy Guest

Jiang Bi
Harbin Institute of Technology

Time TopicMicrostructure and Mechanical Properties of TA15 Titanium Alloy by Laser Hybrid Additive Manufacturing Guest

Dongdong Wu
Beijing Xinghang Mechanical and Electrical Equipment Co., Ltd

  • Prof. Reinhart Poprawe

    Fraunhofer Institute for Laser Technology ILT | Director

    Prof. Dr. Reinhart Poprawe Since February 1996 he is managing director of the Fraunhofer Institute for Laser Technology and holds the University Chair for Laser Technology at the RWTH Aachen. Currently he is a member of the board in the AKL Arbeitskreis Lasertechnik e. V. Aachen. Since 2001 he is a member of the board of the Laser Institute of America (LIA) and serves in many national and international boards as advisor, referee or consultant, for instance at the National Laser Centre of South Africa NLC. During the period of 09/2005 until 09/2008 he was Vice-Rector for Structure, Research and Junior Academic Staff. He still is chairing the RWTH-International Board, is the Rectors delegate for China, received an Honorary Professorship at Tsinghua University and the Schawlow Award of the Laser Institute of America in 2014.

    Latest advancements in Additive Manufacturing and Ultrafast Laser Ablation

    “Digital Photonic Production”summarizes the future of high power Laser Applications.. The vision of designing a structure or product in the computer and creating it additively using Diode- or Solid-state lasers or by ablation with high power ultrafast lasers drives many research topics in this area. But also the integration into production chains with the challenge of meeting the demands of production along the lines of Industry 4.0 is starting to be addressed seriously. From the point of Laser technology, main fields of activity are measurement processes of quality relevant data on-line, process control mechanisms and the combination with automation as a whole.
    Of course, the processes themselves are under intense investigation, such as Selective Laser Melting, Laser Metal Deposition, Laser Ultrafast Ablation. The increase of productivity is the prime goal under economical aspects. New concept and performance results under this criterion will be presented. Also correspondingly increased quality of the resulting products in terms of surface roughness and distortion are key issues of consideration. In this context a “Cluster of Excellence” stimulated by FRAUNHOFER aims at sub-ps-lasers with average powers in the range of 3 kW in the next two years and up to 10 kW in the next 5 years. This scaling of the power will require totally new beam guiding and beam distribution concepts if it should be applied to real world applications.

  • Prof. Dr. Yongfeng Lu

    Department of Electrical and Computer Engineering, University of Nebraska-Lincoln | Professor

    Dr. Yongfeng Lu is currently the Lott Distinguished Professor of Engineering at the University of Nebraska-Lincoln (UNL). He received his bachelor degree from Tsinghua University (China) in 1984 and M.Sc. and Ph.D. degrees from Osaka University (Japan) in 1988 and 1991, all in electrical engineering. From 1991 to 2002, he was a faculty in the Department of Electrical and Computer Engineering at National University of Singapore. He joined the Department of Electrical and Computer Engineering at UNL in 2002. He has more than 25 years of experience in processing and characterization of micro/nanostructured materials. His group has research projects funded by NSF, AFOSR, ONR, DTRA, DOE, DOT, NCESR, NRI, private companies, and foundations, with research expenditures over $27 million in the past a few years. His research has led to a number of commercialization and product developments. Dr. Lu has authored or co-authored over 480 journal papers and 440 conference papers. He is currently the president of International Academy of Photonics and Laser Engineering (IAPLE, UK). He served as the President of the Laser Institute of America (LIA, USA) in 2014. He has been elected to SPIE fellow, LIA fellow, OSA fellow, and IAPLE fellow. He has also served as chair and general chair for major international conferences in the field including the general congress chair for the International Congress of Applications of Lasers and Electro-Optics in 2007 and 2008, and general co-chair for LASE symposia in Photonics West 2014-2017. He is also the recipient of a number of prestigious award, including the Schawlow Award of LIA in 2016.

    Spectrally, Spatially, and Temporally Controlled Laser Processing and Characterization

    Lasers can be used to deliver energy with extremely wide spectral, spatial, and temporal ranges. These laser properties have provided many opportunities for material science and engineering. In this presentation, the speaker will introduce his research activities in processing and characterizing materials in various forms, including metals, polymers, diamond, carbon nanotubes, carbon nanoonions, graphene, gallium nitride, and biomedical materials. Laser-matter interactions can be spatially, spectrally, and temporally controlled and optimized to produce and characterize materials with desired efficiency and accuracy. The talk will cover the following research areas: laser-assisted micro/nanofabrication and additive manufacturing; highly efficient material synthesis using resonant vibrational excitation of molecules; and laser-assisted optical spectroscopy, imaging, spectrometry, artificial intelligence in spectroscopic imaging.

  • Dr. Frank Zibner

    Fraunhofer Institute for Laser Technology ILT, Germany | Project Manager

    Frank Zibner is the Project Manager in Research & Technology at Fraunhofer Institute for Laser Technology, Aachen. In 2012, he got master’s degree of Science in Mechanical Engineering, and later proceeded to Master of Science in Economics and Ph.D. in Engineering at the RWTH Aachen from 2013 to present. Besides, he received the FAA pilot certification in 2011. Since 2013, he has been engaged in scientific and technological development at Fraunhofer ILT. Having Project Management Professional Certification (PMP), he is the Head of multiple international projects – both governmental founded and predominant industrial projects and always devote himself for the investigation for the opportunity to integrate advanced manufacturing technologies into running manufacturing chains, as well as process analysis / production costs analysis. Up to now,
    a growing customer network and research network has been established in Asia. More than ten successful projects completed in Asia with a total overall budget of about €1.5 million.

    Advanced manufacturing technologies using ultra-short pulsed laser sources

    The use of ultra-short laser pulses offers multiple advantages. Accuracy and precision are significantly high compared to the use of long laser pulses or continues laser emission. The minimum affected layer depth can be as low as a few dozen nanometers. Thus applications like surface functionalizing can be realized without decreasing the strength of the core component. One of the key advantages of ultra-short laser pulses is the extreme high peak power that overcomes the melting enthalpy and directly evaporates most of the targeted material. The short interaction time between the laser and the material significantly decreases the thermal heat transfer and minimizes the heat affected zone. Therefore temperature sensible materials can be treated using ultra-short pulsed laser sources. The variety of feasible applications is diverse. Manufacturing technologies to functionalize surfaces to show hydrophobic behavior, for outer wall structuring of piston rings to increase the sliding properties, for precise layer ablation within the thin film battery industry, to process brittle transparent materials like chemical hardened glass without creating any micro-cracks or high precision laser drilling with adaptable taper and hole- geometry with high aspect ratios of up to 1:30 are only an excerpt of the presented process knowledge by the Fraunhofer ILT. The low process efficiency that most processes with ultra-short pulsed laser sources show can be overcome by the use of a defined beam splitting using diffractive optical elements or spatial light modulators. The efficiency of any process with periodic structures can be increased by the factor that equals the amount of partial beams if the pulse energy per beam remains constant. In addition to the extensive process knowledge the presentation will also cover the engineering design realization of some advanced manufacturing technologies in functional manufacturing machines.

  • Prof. Dr. Zhigang Zhang

    the Institute of Quantum Electronics and School of Information at Peking University | Professor

    Zhigang Zhang is a professor of the Institute of Quantum Electronics and School of Information at Peking University, and one distinguished Professor of the first batch of “Changjiang Scholars Program”. He obtained his bachelor degree in 1982 and master degree in 1984 from Beijing University of Technology. In 1992, he received his Ph.D. degree from the University of MONASH in Australia. He has been a lecturer at Beijing University of Technology, a visiting researcher at the Institute of Industry Creation in Japan, and a NEDO fellow at new energy industry technology research institute of the Ministry of Economy, Trade and Industry of Japan. He was a visiting professor at MIT, Fourier University in France, Hokkaido University in Japan, and University of Electro-Communications.
    In recent years, his research have focused on the design and fabrication of ultra-broadband matched chirped mirrors, semiconductor saturable absorption mirrors with high-damagge threshold, coherent pulse synthesis technology, ultra-high repetition rate erbium-doped fiber femtosecond lasers and frequency comb technology of ytterbium-doped fiber femtosecond lasers, and optical fiber time-frequency transmission and long-distance time synchronization technology. He has published more than 120 academic papers in international journals such as Optics Letters, Optics Express, Applied Optics, etc. He has published a book of "Femtosecond Laser Technology" (Science Press, March 2011, 1st Edition; June 2017, 2nd Edition). He was awarded the first prize in Science and Technology Progress of the Ministry of Education in 2003 and the second prize of National Progress for Science and Technology in 2011. In 2017, he was elected as an OSA fellow.

    New trend of the development and applications of ultrashort pulsed lasers

    The development of ultrashort pulsed lasers are moving to more stable and higher efficiency for material processing. This presentation summarizes the recently trend of ultrashort pulsed laser technology and their applications in industry and medicine.

  • Prof. Dr. Markus Kogel-Hollacher

    Precitec Optronik GmbH

    Dr. Markus Kogel-Hollacher began his activities in the laser industry working for his MS degree at the Fraunhofer Institute for Laser Technology in 1994. Since then the focus of his work is in the field of monitoring and control of laser processes.
    After earning his MS degree in physics in 1996 from the RWTH Aachen University in Germany he joined Precitec Optronik GmbH in Rodgau, Germany continuing the work with the emphasis on transferring R&D results to industrial solutions. This work has been discussed extensively in several technical journals and presented in various conferences. In his position as head of the department R&D projects in the Precitec Group he oversees national and international governmentally funded projects.
    Working together with RTD performers and end users his guiding principle is to continuously increase the reliability and the use of process monitoring and process control devices in laser materials processing. In 2008 he obtained his Ph.D. at the Technical University of Berlin, Germany.
    Dr. Kogel-Hollacher has been a member of the LIA since 2002 and recently has served as jury member of the Innovation Award Laser Technology. In 2012 and 2014 he was finalist of the European Innovation Award Laser Technology.

    Low-coherence interferometry in laser processing: a sensor approach setting new standards in industrial applications

    Nowadays the laser is a conventional tool in industrial manufacturing, for a wide spam of applications, from subtractive to additive, from cutting to welding. The main topic in production today is headlined with the word digitalization and Industry 4.0. In this context the laser is playing a dominant role, because it is possible to produce a part directly from a digital model by contactless processing. This unique feature allows for monitoring processes with smart devices, which is a key issue of Industry 4.0.
    Especially sensor technology is a leading part related to Smart Factory and predictive maintenance and even process control. Transforming machine elements into intelligent cyber physical systems involves the integration of smart sensors for condition and process monitoring. Developing sensors systems especially for this industrial area is one of the main business units at Precitec and as Dr. Markus Kogel-Hollacher pioneered the use of OCT in laser materials processing he is the chosen expert talking about the actual status and future aspects of OCT.
    OCT technology (Optical Coherence Tomography) is basically an imaging technique based on low-coherence interferometry (LCI). It is a long-established medical examination procedure. An interferometer with a light source of low coherence length is used to measure distances and the composition of human tissue, e.g. the cornea. The low coherence length is achieved through the use of light sources that emit broad spectrum light. The applied light sources are typically super luminescent diodes (SLDs) with a range of some 10 nanometers.
    In contradiction to sensor technologies which typically are used in laser materials processing and which determine the process status by utilizing the emissions emerging due to beam-material interaction, OCT uses an own light source and this light is coupled into the beam path of the processing laser. So, the measuring position can be set individually, coaxially or with a slight offset to the processing beam or by using a deflection unit fully independently. The extremely high measuring frequency enable the use of this technology even with high speed laser processes. OCT technology is also called low coherence interferometry which describes the basic layout of method, consisting of a reference and measuring path. The difference between both paths can be exactly measured and as the reference path is fixed the value derived from the system matches exactly the path difference, which is e.g. depth of a keyhole or surface topology in LPBF or in surface ablation processes.
    Besides all the effort in mechanical and optical integration of the sensor components, the real innovation achieved with the adapted technology is as follows: The accuracy of the interferometric measurement is not affected by electromagnetic emissions from the vapor capillary or their adjacent areas, neither in deep penetration welding nor during laser surface modification. Only the "own" light emitted from low coherent light source leads to interference between the reference and the measurement path. This smart advantage of the sensor principle was the reason why Dr. Markus Kogel-Hollacher at Precitec started the work more than 10 years ago. Thus, with accurate positioning of the measuring point, a
    measurement of the depth of the keyhole is possible coaxially to the processing laser, regardless of weld geometry and material, the topography of a structured surface can be exactly determined independent of the surface condition. The only limitation is the dimension of the measurement point relative to the spot size of the laser processing and the size of the measurement range in the axial direction. For manufacturing with lasers this technology opens new horizons with respect to
    - reduced manufacturing costs for an existing product
    - improved quality in an existing product
    - new product design
    - reduced process costs
    - shorter development lead time
    - improved quality assurance
    - detection and correction of defects during early production stages
    - real-time controlled processes
    All statements in this bullet list can be were proven to be true in an industrial application where the laser is used to weld safety relevant parts for automotive industry. This is world-wide the first application in which the measurement of an OCT sensor is taken to control the laser power and thus control the penetration depth of the weld seam during serial production. The measuring equipment suitability was proven by the customer itself, this effort and the costs for the sensor payed itself of after 3 months. Especially the dramatic reduction of destructive testing is one major reason for the customers satisfaction.
    With respect to demand for complete monitoring or even control the additive manufacturing processes like LMD and LPBF are not distinguished from other laser applications. Precitec demonstrated in miscellaneous applications, that OCT is the promising sensor technology for acquiring the most dominant information, the topology of the processing result and due to the coaxial adaptation, this is possible in-situ. Possible process error situations in 3D printing with LPBF like pores, distortion, coating defects, layer offsets or even the so-called balling effect result in topography changes and therefore are picture perfect to be detected and measured with the OCT technology.
    Just recently this year Siemens and Precitec demonstrated a fully close-loop-controlled LMD process by integrating the OCT technology into the SINUMERIK control. What is true for other laser manufacturing processes also holds true for LMD, even the metal powder blown to the work-piece surface does not change the exact surface topology measurement and so the metered value can be used as input for a control loop.
    Overlooking the last 5 years from the first industrial version of an OCT sensor for the use in laser materials processing applications presented by Precitec until today, this sensor took either scientific and industrial users by storm. You hardly find any laser conference without dedicated OCT sessions. There is a generation of young scientist growing up which cannot believe that there was a pre-OCT time. In many Universities and Research Institutes this sensor is used as a standard to set up laser processes or to evaluate the processing result, from cw laser to short and ultra-short pulsed processing.

  • Dr. Matthias Koitzsch

    Trumpf (China) Co., Ltd.

    High-Performance Welding of Copper with Green Multi-kW Continuous-wave Disk Lasers
  • SUN XIAOFENG

    Shanghai Aircraft Manufacturing Co., Ltd. | Deputy minister

    Mainly engaged in research of advanced manufacturing technology for light alloy structure, and has undertaken a number of scientific and technological projects in advanced manufacturing fields such as laser welding and material addition manufacturing.

    Application and Development of Laser Addition Technology in COMAC

    Application and Development Status , and Future Planning of Laser Addition Manufacturing Technology in SAMC

  • Liu Xingsheng

    Focuslight Technologies Inc. | Chairman

    10 years of research and management experience in America (Virginia Tech, Corning, Coherent, nLight); 100+ publications, 100+ patents, 30+ invited papers internationally; Served or serving as chair or committee member of international conferences

    High power density line laser application in advanced manufacture

    Laser technology plays a very important role in advanced manufacture. High energy uniformity and high power density line laser with um level width has broad application prospects in material processing fields such as laser lift off, laser annealing and laser alloying. etc. Comparing to single spot output of laser sources,Line laser has outstanding advantage in material processing efficiency and processing cost . This paper introduces the latest progress and application of micro optic beam shaping technology and line laser material processing system of Focuslight Technologies Inc. which is the leader of line laser technology.

  • Zhang Jing

    IPG(Beijing)Fiber Laser Technology CO.,LTD. | Manager

    Recent Application developments of IPG laser
  • Prof. Dr. Gary J. Cheng

    School of Industrial Engineering and School of Materials Engineering in Purdue University | Professor

    Prof. Gary Cheng is a professor in School of Industrial Engineering and School of Materials Engineering in Purdue University. He is an ASME fellow. He holds his Ph.D. in mechanical engineering from Columbia University (2002). His research and teaching interests include laser materials processing, mechanical behaviors, additive manufacturing, electro-optics and nanophotonics. He has published about 150 articles in journals including Science, Advanced Materials, Materials Today, Nano Letters, ACS Nano, Small, and Acta Materialia etc. His research was highlighted in Nature Photonic, Nature Research Materials, NanoToday. He has 5 US patents awarded and 8 applications. He has been recognized by NSF CAREER Award, ONR Young Investigator Award, SME outstanding young manufacturing engineer, ASME Cho & Trigger Young Investigator Award, National Research Council senior research fellowship, University Faculty Scholar Award, ASME best papers, Purdue Innovator Hall of Fame.

    Ultrafast laser induced nanoscale photothermal and photomechanical internactions and their applications
  • Weibiao Chen

    Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences | Deputy Director

    Prof. Dr. Weibiao Chen is the deputy director of Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences. He is also the director of Nanjing Institute of Advanced Laser Technology.

    Progress of advanced laser macro-/micromanufacturing in SIOM

    The laser as one universal tool for manufacturing, has find extremely wide applications in the forthcoming fourth industrial revolution. In this talk, we will give an overview of recent laser manufacturing activities in Shanghai Institute of Optics and Fine Mechanics, CAS. In the aspect of macro-scale manufacturing, laser welding and cladding for the applications in new energy vehicles and aerospace industries have been explored. In the aspect of micro-scale manufacturing, laser cutting, drilling, and surface structuring have find potential applications in the fields of consumer electronics, biomedical materials, and new energy materials, etc. The challenges related laser sources, beam delivering optics, system integration for mass production have been discussed as well.

  • Shibin Jiang

    American AdValue Photonics Company | CEO

    Dr. Shibin Jiang is founder and President of AdValue Photonics Inc. and Adjunct Research Professor at College of Optical Sciences, University of Arizona.
    Dr. Jiang holds 49 issued US patents, edited 23 proceeding books, authored more than 150 publications, and has H index of 43. He served as chairs of 26 international technical conferences. Dr. Jiang was awarded with the Gottardi Prize in 2005 from International Commission on Glass, 2012 and 2015 R&D 100 Award. Dr. Jiang is a Fellow of SPIE, The America Ceramic Society, and OSA.

    Fiber Lasers for Glass and Sapphire Drilling

    Fiber lasers have attracted intense interest in recent years because of its outstanding performance compared to other types of lasers for industrial application. Recently glass and sapphire laser processing have become necessary because of the need for a variety of applications. In this presentation, we present our latest studies of picosecond and nanosecond high peak power and high repetition rate green fiber lasers at 515nm for glass and sapphire drilling applications.

  • WUHAN HUARAY PRECISION LASER CO., LTD.

  • Prof. Dr. Andreas Ostendorf

    Ruhr-University Bochum | Vice Rector for Research

    Laser metal deposition (LMD) and in-situ alloying of powder blends
  • Dr. Rajesh Patel

    MKS Instruments, Inc. | Director of Applications Engineering, Spectra-Physics Lasers,

    Laser Micromachining: Nano to Pico to Femto Second Pulses
  • Dipl.-Ing. Felix Tenner

    Friedrich-Alexander University of Erlangen-Nuremberg | Team manager, the Sensing, Controls & Real-time Systems group,

    Felix Tenner finished his studies in mechatronics at the Friedrich-Alexander-Universität Erlangen-Nürnberg in 2011 and is working as a research assistant in the Institute of Photonic Technologies. Since 2015 he is the group manager of the Sensing, Controls & Real-time Systems group. His research interests are in the increase in process understanding of laser material processing and the development of sensor systems for industrial and medical applications.

    Determining defect-related process features in laser material processes by the use of videography

    There is a demand for process control systems to increase process stability and thus quality laser material processing. To fulfil this demand the development of a process sensor which acquires a broad variety of process emissions aiming to gain the full picture of the process conditions is the ultimate goal. However, a more efficient way might be the use of sensor systems which are tailored to the specific control task needed in production. For this purpose the relevant relations between defects and process features have to be found which demands a large number of experiments and is thus often very time consuming.
    For a more targeted development of a process control system the use of videography-based process observation methods with high temporal, spatial and spectral resolution is used at our institute to get more information from every single experiment. In my talk I show some methods in different stages of development for determining characteristic process features, like hyperspectral imaging (HSI) and high-speed imaging. Both methods help to increase process understanding, stability and quality for laser material processing. By the use of these techniques characteristic features can be analyzed during the preproduction development. This knowledge can then be used to build tailored sensor and control systems for series production.

  • Prof. Dr. Stefan Kaierle

    Laser Zentrum Hannover e.V. | Head of Materials & Processes Department

  • Xuehui Wang

    Wuhan Huagong Laser Engineering Co., Ltd.

    Graduated from CIOM in 2001, and studied in HUST during 2005~2008. In 2009, he joined HGTech Co., Ltd. He is engaged in the field of optical system design and laser micro-machining for more than 15 years. Currently, he is the chief engineer of HGLaser micro-machining division

    Laser micro-machining of Glass and it's applications

    The speech introduces the laser micro-machining of glass and current status in industry, including cutting, welding, drilling, structuring etc.

  • Dr. Zhenlin Liu

    Wuhan Huaray Precision Laser Co.,Ltd.

    Zhenlin Liu, Japan Graduate University for Advanced Studies Ph.D., national expert. He is currently the Director of Wuhan Huaray Laser Femtosecond Product Line and the Vice President and Chief Engineer of Huaray Laser. Has nearly 20 years of experience in optical design of femtosecond lasers. He has been working on the development of ultrafast fiber lasers in the United States for more than a decade. Successfully developed femtosecond lasers for ophthalmic medical treatment. He has also been engaged in scientific research on ultrafast UV solid-state lasers and UV laser addition materials in Japan for a long time.

    Ultrafast fiber lasers and their applications in material fine processing

    The unique properties of ultrafast lasers have revolutionized material processing. The ultrashort pulse width of the laser suppresses the diffusion of thermal energy. Minimize heat affected areas. Thereby, ultra-high precision micro-nano manufacturing of various materials can be realized. In addition, extremely high peak intensities can induce absorption of nonlinear multiphotons, which expands the variety of transparent materials that can be processed, such as glass. Nonlinear multiphoton absorption enables three-dimensional micro-nano fabrication by illuminating a closely focused femtosecond laser pulse inside a transparent material. Therefore, ultrafast lasers are currently widely used in basic research and practical applications.

  • Xiangdong Cao

    Qingdao Free Trade Laser Technology Co.,Ltd | Director

    Xiangdong Cao Post doctor,University of Michigan Doctor,University of Rochester Master,Chinese Academy of Sciences Bachelor, the department of Electronics Engineering ,HUST Be honored as enterprise talent in National "Thousand Talents Program "Be appointed as guest prof of Wuhan National Laboratory for Optoelectronics/ Wuhan university /Wuhan University of Technology,CEO(Qingdao Free Trade Laser Technology Co., Ltd )

    Femtosecond Fiber Lasers and Their Applications in Advanced Digital Photonic Manufacturing

    Ultrafast lasers, especially femtosecond lasers have becoming a very promising technology for next generation digital photonic manufacturing. Femtosecond laser provides three key functions necessary for photonic manufacturing, namometer precision, material independence and fully digital. Combination of fiber technology and ultrafast laser gives rise to several crucial advantages of femtosecond fiber laser compared to other femtosecond laser technologies such as low cost, compactness, high efficiency and high reliability. A brief summary of our digital femtosecond fiber lasers will be introduced, results of a few important applications in advanced manufacturing such as high throughput flexible circuit board processing, high efficiency solar power thin film patrerning, painless femtosecond laser cosmetics, and lastly digital femtosecond laser CNC machines. Finally challenges and opportunities in digital femtosecond fiber lasers will be discussed.

  • Markus Ruetering

    Laserline GmbH

    Markus Ruetering, born in 1965, is actually Sales Manager at Laserline GmbH in Germany. After his studies of Physical Engineering at the University of Applied Science in Wedel (Germany) Markus helds a degree as Diplom-Ingenieur (FH). Markus started a job in R&D for Solid State Laser –Technology in 1989 at Rofin-Sinar Laser GmbH, Hamburg / Germany. He moved into sales in 1992 and held various positions in that area since then. Regional Sales, Manager Sales Support, Regional Sales Manager, Product and Sales Manager had been the various job titles. Since 2000 Markus is doing business in Asia. In 2008 Markus became the executive Product-Manager for all high power lasers in the Rofin Group. In 2011 Markus moved to Laserline GmbH and became responsible for all sales in Asia. In 2013 the responsibility for Sales in Germany was added.

    Laserline Blaulaser

    This presentation will show the latest technology and applications for lasers having a wavelength of 450 nm wavelength. These so called Blue Lasers will be the tool of the future in applications for copper and other high reflective materials, where infrared lasers are not the best choice or cannot be utilized at all. Blue lasers are paving the path for more applications in battery manufacturing, high power electronics and e-mobility, just to name the most important sectors. The presentation will show several examples for welding and cladding applications with blue lasers.

  • Jim Bovatsek

    MKS Instruments, Inc

    Fast, High Quality Glass Cutting with Tailored Picosecond Laser Pulses and Bessel Beam Optics

    Cutting glass with high speed and good quality has been a growing application space, largely driven by the need to manufacture cover glass plates for mobile devices. Over the years, many technologies have been used and techniques developed, and laser processing has become a promising solution for this application. In particular, picosecond pulsed lasers are known to offer good results, and when combined with proper beam shaping and tailoring, the process can be further improved. Moreover, the ability to tailor the picosecond pulses — such as generating closely spaced bursts of pulses with a controlled envelope — offers additional capability for further improving the process. In this work, we present results using tailored picosecond pulses from a Spectra-Physics® IceFyre® 1064-50 laser with a Bessel beam optical setup to structure glass for subsequent mechanical separation. We demonstrate that by optimizing the laser pulse output and optical setup, excellent results can be achieved in terms of both cutting speed and cut quality.

  • Prof. Tang Xiahui

    Huazhong University of science and Technology, vice-director of the National Engineering Research Center for Laser Processing | Professor

    Tang Xiahui is a professor and doctoral supervisor of School of Optical and Electronic Information at Huazhong University of Science and Technology. He is presently the vice-director of the National Engineering Research Center for Laser Processing and he is the executive member of the council of Hubei mechanical engineering society and laser processing committee of the Chinese Optical Society, the vice-chairman of Laser Institute of Hubei Province, the editor of “Laser Technology” and “Applied Laser”. His interested areas are high power CO2 gas Laser, high power laser processing systems integration, welding, brazing, cutting and surface engineering. He published more than 60 papers in the domestic and foreign academic journals, more than 20 papers were SCI, EI, ISTP included and Obtained 5 Chinese invention patents. He received Hubei Science and Technology Progress Award in 2004 and Ministry of Education, National Science and Technology Progress Award nominations in 2005. He has finished the MOST National “Fifteen” Scientific Technological Research Plan, “Eleventh Five” major scientific and technological support plan, Doctoral Fund of Ministry of Education, Hubei Province “Eleventh Five-Year” key scientific and technological and NSFC, respectively. Further, he undertook nearly 60 enterprises of science and technology projects.

    High-power diode laser beam shaping and its application

    High power diode lasers have been used in the fields of surface modification, welding, cutting and so on for their high efficiency, good reliability, long lifetime and small size. However, the severe asymmetry of the DL unit in the fast and slow axis requires that high power diode lasers must be beam shaped before they can be used.We analyzed the structure of direct output high power diode lasers and studied the application of semiconductor lasers in different industrial environments.(A)In order to solve the connection problem of Al2O3 ceramic lined pipe in petroleum pipeline, a special semiconductor laser light source was developed for ceramic laser welding. The technological parameters and beam requirements for ceramic laser welding were investigated experimentally. By means of single tube space beam combination,polarization beam combination, wavelength combination and Fresnel focusing system, a semiconducotr laser ceramic welding system with uniform light distribution field was developed. The results show that, the output power of the polarization combination module is 380W, the beam combination efficiency is up to 96.62%. After wavelength combination,the output power can exceed 800W,and the output spot uniformity of focusing system is 93.85%.The system can be applied to ceramic welding in different occasions, and meet the requirements of Al2O3 ceramic laser welding with 2 mm thickness. (B) Galvanized steel is a layer of zinc coated on a steel plate to improve corrosion resistance and extend its service life.In order to reduce the influence of zinc vapor on the weld quality, some manufacturers have adjusted the laser beam profile used in welding, such as Triple Spot brazing and Spot-in-Spot brazing.The core is to adjust the energy distribution between different beams, and to ensure that the welding main beam energy is sufficient, the excess energy is distributed to the remaining beams and the preheating function before welding is performed, thereby avoiding the plating of the welding material surface. The zinc layer generates a large amount of overflowing zinc vapor due to a sudden rise in temperature, thereby improving the quality of the weld.(C)As one of the alternatives to hard chrome plating, the biggest drawback of conventional laser cladding technology is its low surface cladding efficiency. Although some scholars have increased the rate of powder coating by means of wide spots and additional auxiliary heat sources, the linear speed of laser scanning still cannot be improved. An important way to increase the scanning rate of the laser cladding is to control the temperature of the powder reaches the melting point of the material before it falls into the melt pool. To this end, based on the previous experimental data, we designed a beam focusing system for ultra-high speed laser cladding, and established a temperature field model of the powder jet under laser irradiation to study the powder temperature field under different laser power and powder mass flow conditions.

  • Prof. Yong Cheng

    Army Engineering University of PLA | Professor

    ChengYong was born in Jiangxi Province of China.He received his Ph.D from Anhui institute of Optics and Fine Mechanics,Chinese Academy of Sciences in 2002.He is the leader of Opt-Electronics institute, in Army Engineering University of PLA.His research interest includes the solid-state laser engineering, instruments and the laser technology with the new concept .He has written two monographs of <Adjust-free Solid State Laser> and <Coherent Combining of Solid Laser>. He attained 1 Second Prize from national award of advancement on technology invention, and 2 First Prizes from military award of advancement on technology.He is the managing director of Chinese Society for Optical Engineering, the member of the standing committee in the Chinese Optical Cociety and Professional Association of Photo-electronic Technology,Chinese Society of Astronautics,a director of Hubei Province Laser society.

    Advanced laser technology and systems

    In order to meet the new requirements of space laser, military laser, advanced laser manufacturing and other high-class fields, the research team broke through the technology of the high-gain power extraction and ASE suppression, developing the high repetition frequency, narrow linewidth and the solid-state laser with the narrow pulse width, and optimized the technology of DOE diffraction beam splitting to achieve 100 laser beams outputs with the uniformity greater than 90%. By breaking through the technology of the corner cube mutual injection coherent and multi-channel ring array LD pumping, they developed a high-energy solid-state laser with long-pulse of 200J/10Hz, innovating a high-efficiency damage mechanism, and builded a laser countermeasure verification system for the conducting research on the role of long-distance laser and specific target. By innovating the combination of dual laser deposition and magnetic filter ,the fourth generation of PLD system for the optical thin film was constructed.

  • Mike Wang

    Suzhou Everbright Photonics Co., LTD

    Dr Jun Wang is the CTO of Suzhou Everbright Photonics Co. and a distinguished professor of Sichun University. He received a Ph.D. degree in Engineering Physics from McMaster University, Canada in 1997. Since 1992, he has been studying or working on compound semiconductor materials and diode laser devices in several companies and institutions, including SLI, Spectra-Physics, Lasertel and nLight. He has led or participated in a number of research and development programs in the area of high power semiconductor lasers. He has more than 30 publications reporting record results on efficiency, output power and reliability of diode lasers.

    Diode laser chips and fiber coupled modules for fiber laser and solid state laser pumping ,as well as material processing applications

    Fiber coupled diode lasers are used as the pump sources for fiber lasers and solid state lasers, or the light sources of direct diode laser systems. To meet the emerging development of fiber laser, solid state laser and direct diode laser systems, diode lasers are moving towards higher power, higher brightness, higher efficiency and higher reliability. In this talk, we will present our progresses in these areas. Through MOCVD, wafer fabrication, facet passivation, device and module packaging processes, we developed a series of 8xx nm and 9xx nm chips and fiber coupled modules. Using distributed carrier injection to reduce non-linear effects, and combining facet passivation and non-absorptive mirror structure techniques to increase COMD level, we improve output power of a diode with a 50μm wide emitter up to 14W at a wavelength of 976nm. Through burn-in/lifetest at accelerated conditions and test to extreme power levels, we investigated various failure modes of the devices. Accordingly, we developed counter measures to improve the performance and reliability. We achieved MTTF of higher than 20000 hours at 10W output from such devices.
    For fiber coupled modules, through high quality chip bonding, beam shaping, polarization beam combining and spatial beam combining, we build 975nm modules for fiber laser pumps. Such 975nm pump modules results in near 10% higher efficiency of optical pump to laser output. Using Volume Bragg Grating (VBG), we developed wavelength locked modules at 878.6nm for solid state laser pumps. Employing spectrum beam combining techniques with external cavity, we achieved higher than 2000W output power from a fiber with a diameter of 200m (0.22NA). In this talk, we will also present the technology roadmap for 10KW high brightness fiber coupled modules for materials processing.

  • Prof. Xiaozhu Xie

    Guangdong University of Technology

    Xiaozhu Xie is a professor at the school of Electromechanical Engineering, Guangdong University of Technology. From 2010 to 2011, he was a visiting Scholar at National University of Singapore. He is member of Laser Processing Committee of China Optical Society, Deputy Director of Youth Academic Committee of Laser Processing Committee of China Optical Society, Secretary General of Special Processing Branch of Guangdong Mechanical Engineering Society, Deputy Director of Expert Committee of Guangdong Laser Industry Technology Innovation Alliance; He is mainly engaged in laser research on precision machining technology. He has presided over more than 10 national and provincial projects and has published more than 40 papers, including more than 20 SCI/EI papers and more than 20 granted patents. He is an expert reviewer for international scientific journals, the National Natural Science Foundation of China, the Natural Science Foundation of Guangdong and other projects. He has been invited to present at CLEO-PR2017 and other international academic conferences.

    Laser surface micro-nano manufacturing technology and application

    This presentation introduces the mechanism, process and method of laser surface manufacturing technology. The bionic micro-nano composite structure inspired by nature animals and plants such as sharks, lotus leaves and leeches has unique properties of drag reduction and self-cleaning. Through the laser-inducing technology, the micro-nano composite structures with a variety of special morphologies are formed in situ on the surface of various materials to achieve high-efficiency photothermal conversion, extreme wettability, drag reduction, efficient heat transfer process, anti-icing performance, etc, in order to explore its potential for application in industrial sectors.

  • Jing Zhang

    IPG(Beijing)Fiber Laser Technology CO.,LTD. | Manager

    Jing Zhang,got bachelor degree in Hefei University of Technology, got master degree in Harbin Institute of Technology, got doctor degree in Tsinghua University. During 2011-2014 Jing worked in GM China Science lab as a researcher, the main responsbility is developing advanced laser welding processes aiming at light weight of automotive body-in-white. During 2014-2017 Jing worked in Shanghai Aerospace Equipment Manufacturer, responsible for many research projects. During more than 10 years' experience in laser processing, Jing published 20 journal papers, 10 US patents and 9 Chinese patents.

    Recent Product & Application developments of IPG laser
  • Chao He

    Fraunhofer Institute for Laser Technology ILT | Assistant

    After having finished my master study in optical engeering, I continueed my research work in the Fraunhofer Institute for Lasertechniology ILT as a PhD candidate. The focus of my work is micro and nanostructuring using ultrashort pulsed lasers, specialized in the field of high precision drilling and cutting using a helical optics and ps/fs lasers. In addition, I endeavour to develop systems technology of laser drilling and laser surface structuring and transfer them from laboratorial research to industrilal application.

    Efficiency enhanced high quality helical drilling and cutting for industrial applications

    The helical drilling optics can achieve high-precision micro holes for industrial application in combination with ultrashort pulsed lasers. By changing the parameters of the helical drilling optics, the hole geometry such as diameter and taper can be precisely adjusted. In the helical drilling and cutting process, the pulses deposition locate in a spiral trajectory and the ablation volume by each ultrashort laser pulse is very small. As a result, the affect of heat accumulation by pulses with high repetition rate can be dramatically improved. And thus the precision can be guaranteed. However, the processing efficiency is strongly dependent on the geometry and laser beam source applied. In order to improve the productivity for industrial applications, in this work, an ultrashort pulsed laser source with 10 ps pulse duration and a maximum single pulse energy of 650 µJ has been applied. 100 hole with diameter 100 µm and high roundness in 0.1 mm thick stainless steel can be achieved within one second. Moreover, the cutting process can also be scaled up for a factor of 2-3.

  • Dr. Burkhard Fechner

    Coherent LaserSystems GmbH & Co. KG

    Dr. Burkhard Fechner studied Physics at the University of Hannover, Germany. He received his Diploma in Physics there and in 1987 he received his Dr. degree in applied physics at the same University in the field of laser spectroscopy. After that he joined Lambda Physik GmbH (now Coherent GmbH) as sales manager for Near- and Middle East territories. In 1990 Dr. Fechner moved to Japan holding various positions there at the local subsidiaries. Since 2004 he is supplying the Asia region as Sales Manager Asia for excimer products.

    Scalable Microprocessing

    Thin film generation or processing with advanced laser technologies is the enabling and often performance determining manufacturing step in many high tech markets and applications. The success formula for any technology is bridging the gap between depositing, structuring or modifying a thin film and achieving industrial processing rates, yield and throughput. Most important for process reproducibility, next to shortest possible ablation wavelength, is a stable behavior of consecutive laser pulses as well as the homogeneity of the on-sample laser fluency. These requirements constitute the superiority of excimer lasers as pulsed UV laser sources when it comes to precision and reproducibility in surface treatment and micromachining. Recent progress in excimer laser design and UV optical performance will be introduced enabling fast, high-precision UV manufacturing in cost-sensitive applications. We will give insight in the latest laser surface processing trends and technologies from a wide range of industries.

  • Dr. Nicolaus Hettler

    CDA GmbH

    Volume production and optic design of micro-optics components on polymer. How to achieve best results in the shortest timeframe.

    Introduction of CDA’s volume manufacturing capabilities, as well as optic design and prototyping steps. We produced optics for automotive, consumer electronics, robotics, industrial vision, 3D sensing, automotive, AR/VR/MR applications. The product portfolio for optics ranges structured light, TOF, diffractive Fresnel lenses and beam shapers. Learn how to archive best results with effective and short timeline.

  • Xi Chen

    Harbin Institute of Technology

    Phd cnadidate, research mainly focus on laser welding-brazing and ultra-fast laser processing.

    Microstructure and mechanical properties of laser welded Al-Si coated hot-press-forming steel joints

    High strength steel has attracted a lot of attention due to its excellent advantage of weight reduction. A thin Al-Si coating covered on the surface of hot-press-forming (HPF) steel offers functions of antioxidation and decarburization under high temperature processing conditions. In this study, microstructure characteristic, phase, microhardness, tensile strength and cupping test qualification rate of laser welded Al-Si coated HPF steel joints were investigated under different laser powers. Experimental results show that welding process become unstable because of metallic vapor generated by ablation of the coating. Some white bright rippled Fe-Al phase is observed to be distributed in the fusion zone randomly. It is found that microhardness, tensile strength and cupping test qualification rate decreases with the increase of the laser power. For the 1100 W laser power, the sound weld performs microhardness of 466.53 HV, tensile strength of 1349.9 MPa.

  • Xi Chen

    Harbin Institute of Technology

    Phd cnadidate, research mainly focus on laser welding-brazing and ultra-fast laser processing.

    Microstructure and mechanical properties of laser welded Al-Si coated hot-press-forming steel joints

    High strength steel has attracted a lot of attention due to its excellent advantage of weight reduction. A thin Al-Si coating covered on the surface of hot-press-forming (HPF) steel offers functions of antioxidation and decarburization under high temperature processing conditions. In this study, microstructure characteristic, phase, microhardness, tensile strength and cupping test qualification rate of laser welded Al-Si coated HPF steel joints were investigated under different laser powers. Experimental results show that welding process become unstable because of metallic vapor generated by ablation of the coating. Some white bright rippled Fe-Al phase is observed to be distributed in the fusion zone randomly. It is found that microhardness, tensile strength and cupping test qualification rate decreases with the increase of the laser power. For the 1100 W laser power, the sound weld performs microhardness of 466.53 HV, tensile strength of 1349.9 MPa.

  • Qingpeng Huang

    Guandong University of Technology

    Huang Qingxi, male, master of Laser Micro/Nano Processing Lab, School of Electromechanical Engineering, Guangdong University of Technology, the main research direction is detection technology of laser cleaning process.

    Metal rust removal by MOPA-based fiber laser in nanosecond regime

    Laser rust removal can effectively avoid the base metal damage and environmental pollution which is easily caused by the traditional rust removal process of mechanical grinding, sanding blasting and chemical pickling. In this paper, the dynamic process of the laser rust removal was photographed by high-speed camera. The effect of laser fluence, pulse duration, spot overlap rate and defocusing amount are analyzed in the process of the laser rust removal. The main mechanism of the laser rust removal of carbon steel is dominated by the laser ablation and the gas explosion. Moreover, the main components γ-FeOOH (Fe2O3 · H2O) in rust layer is decomposed into Fe3O4 in the center of ablation region after laser irradiation. When the laser processing parameters are as pulse duration of 200ns, laser fluence of 53.3J/cm2, spot overlap rate of 40% (240mm/s for scanning speed and 0.024mm for scanning space), defocusing amount of 0.2 mm and three scanning times, the rust layer can be effectively removed and the surface roughness Ra valalue of 1.6 μm is obtained after laser derusting.

  • Li-Wei Hu

    Yanshan University

    Current master student at yanshan unixersity, Currently in China Academy of Engneering Physics for Joint-Supervision .

    The preparation of metallic glasses/crystalline composite coatings by laser cladding with enhanced corrosion resistance research

    Metallic glasses (MGs) exhibit excellent corrosion resistance due to their unique short-range order and long-range disordered structure. However, it is difficult to obtain large-sized MG due to their amorphous forming ability. Laser cladding technology can prepare coatings with tunable compositions, and the rapid solidification conditions in the cladding process are favorable for the formation of MG. Therefore, the MGs and their composite coatings may be prepared by laser cladding. In this study, Zr-based MG with strong MG forming ability were selected as the research alloys. Dense Zr-based amorphous/crystals coatings were prepared by laser cladding. The effect of cladding parameters on the microstructure and corrosion resistance of the coating was investigated. the grain in the Zr-Cu-Ni-Al-based composite coating first epitaxially grows at the front of the fusion line, but then transforms into dendrites dispersed in the MG matrix. The MG content in the coating increases with the decreasing laser power. The Zr-Cu-Ni-Al-based composite coating exhibits obvious passivation phenomenon in the 3.5 wt.% NaCl solution, which is rare to found in other Zr-Cu-Ni-Al-based composite coatings. It was found that the increase of the amorphous phase can significantly promote the formation of the passivation film in the electrochemical corrosion process, thereby improving the corrosion resistance of the coating. The formation of the passivation film is closely related to the enrichment of Zr, Ni and Al. This work provides important insights into the structural evolution as well as the corrosion mechanism of MG/crystalline composite coatings.

  • Ze Tian

    Harbin Institute of Technology

    Phd cnadidate, research mainly focus on laser cleaning technology.

    Nanosecond laser cleaning of marine micro-biofoulings from the surface of aluminium alloy

    Marine biofouling is an urgent issue, which is of great importance in the field of marine engineering. Some traditional antifouling tools including mechanical and chemical methods own disadvantages of polluting environment, low efficiency, damaging substrate uncontrollably. Based on this, we proposed a new green laser cleaning technology to treat marine micro-biofoulings, in order to achieve high efficiently, environmentally and controllably removal effect. Super unltra depth microscope, scanning electron microscope, atomic force microscope, energy disperse spectroscope and X-ray diffraction were used to analysis morphological characteristics, chemical compositions and phase constitution of the surfaces before and after laser cleaning. Nano indentation was adopted to obtain thin layer hardness information of laser cleaning surfces. The results showed that nanosecond laser cleaning technology can remarkably remove marine micro-biofoulings, and the residual contamination decreases with the increase of average laser power. Al content detected on the laser cleaned surfaces can reach 88 wt.%. No significant changes can be found in phase constitutions between the laser cleaned surfaces and original substrates. However, the micro-zone hardness increased slightly. Besides, laser cleaning can induce the fornation of new microsturture on laser cleaned surfaces. With the inease of laser power, surface roughness increase to 2.77 μm (micron sized) and 36.5 nm (nanosized), and the generated new hierarchical micro- and nanostructured surface can be acceptable. This research can lay the foundation for the application of laser cleaning in the field of removing biofoulings from the metal surface.

  • Shuang Wu

    ShenZhen Inno-Laser Technology Co.,Ltd.

    Shuang Wu, graduated from The State University of New York at Stony Brook, Master Degree. She has gained operation skills and logical ability. Now as the R&D Engineer of ShenZhen Inno-Laser Technology Co.,Ltd., Shuang is in charge of research & developemnt about ultrafast laser applications in device micro-processing/fabrication.

    Super-fine Micro-processing of Metal Based Devices by Femtosecond Laser

    With the significant advantages of ultrafast laser, femtosecond laser micro-machining can meet the requirements of various commercial applications,in the aspect of biomedical, microelectronics, aerospace and other industries. In this speech, the topic will be: (i) zero taper or negative taper holes achieved by fs laser processing, in both regular and irregular shapes; (ii) fine cutting of metal tubes with smooth intersecting surface and high precision; (iii) major processing parameters of fs micro-machining and the impact factors during processing.

  • Thomas Schopphoven

    Fraunhofer Institute for Laser Technology ILT

    Dipl.-Ing. Thomas Schopphoven studied mechanical engineering in Aachen and completed his diploma thesis in 2012 at the Chair for Laser Technology at RWTH Aachen University. Since then he has been working as scientific employee at the Fraunhofer Institute for Laser Technology (ILT). For his work on the development and industrialization of the Extreme High-Speed Laser Material Deposition, he was awarded the Berthold Leibinger Innovationspreis, the Joseph von Fraunhofer Prize and the Steel Innovation Award. Currently he is head of the “Productivity and System Technology” team within the “Laser Material Deposition” group at the Fraunhofer ILT.

    Extreme High-speed Laser Material Deposition (EHLA)

    Extreme High-speed Laser Material Deposition (EHLA), is a new, highly productive variant of Laser Material Deposition. EHLA eliminates coating processes' shortcomings, in particular hard chrome plating and thermal spraying, providing an eco-friendly and economical alternative. In many applications, it is a viable substitute for hard chrome plating with chromium (VI), which has been subject to rigorous constraints in the EU since September 2017. This process also has great potential in the rapidly growing additive manufacturing market. The basis for EHLA was developed at the Fraunhofer Institute for Laser Technology (ILT) and the Chair of Digital Additive Production (DAP) at RWTH Aachen University and established in industrial manufacturing in a joint interdisciplinary effort with various machine manufacturers and end users.

  • Prof. Lu Jinzhong

    Jiangsu University

    Plastic deformation behaviour and formation mechanism of gradient nanostructure in titanium alloy subjected to laser shock peening

    Titanium and titanium alloys are entensively used in aviation and aerospace applications owing to their high strength to weight ratio and excellent corrosion resistance. Micro-region plastic deformation generated by laser shock wave is a complex process. In the present work, we carried out a series of LSP experimentals in ttitanium, characterize their microstrutural evolution, reveal the cross-scale plastic deformation behaviour and the formation mechanism of gradient nanostruture under the mechanical effect of the ultra-high strain rate laser shock wave.

  • Xuhao Wu

    Highlaser Opto-electronic technology CO. LTD

    Senior engineer, graduated from Harbin Institute of Technology. Engaged in laser surface strengthening technology, laser welding technology and engineering application research. Member of laser processing professional committee of Chinese optical society, member of SAC/TC284/SC2 of national technical committee on light radiation safety and laser equipment of standardization administration, mentor of master of mechanical engineering of wenzhou university, deputy director of wenzhou laser application engineering technology research center, professional and technical top talent of ruian city, leading talent of science and technology innovation of wenzhou city.

    Characterization of high-speed laser-clad coating and its application

    A 6 kw fiber laser was used to investigate high speed laser cladding (HSLC) of iron-based alloy in this paper. The influence of alloy powder composition and laser parameters on macro -quality of the laser-clad coating was discussed. Optical microscope, Scanning electron microscope and X-ray diffractometer were adopted to reveal the microstructure and phase structure of the HSLC coatings. Furthermore, a MM-U10G type friction and wear tester and a CS350 type electrochemical workstation were used to measure the wear resistance and corrosion resistance of the HSLC coatings, respectively. Results show that, the optimized HSLC coatings presented good macro-quality, such as, small surface roughness (<10μm) , lack of pores and cracks, high hardness (≥HRC50); The microstructure of the HSLC coating is characterized ultrafine-grain, the phase structure of the HSLC coating is changed from full martensite to a mixture of martensite and austenite with increasing contents of both Ni and Cr, the hardness of the HSLC coating is gradually reduced from HRC58 to HRC50 as well as the wear resistance the HSLC coating is reduced with an increase in contents of both Ni and Cr. The corrosion resistance of the is equivalent to 304 stainless steel while good wear resistance is guaranteed.

  • Fenggang Liu

    Xi'an University | Lecturer

    Fenggang Liu is currently the lecturer in the School of Mechanical and Materials Engineering at the Xi'an University. He is also a postdoctoral fellow in Northwestern Polytechnical University. He is received a Ph.D.. degree in Materials Science and Engineering from Northwestern Polytechnical University in 2017. His research interest is laser additive manufacturing, remanufacturing. He has published more than 20 articles among which 14 papers are included in SCI.

    Influence of austenitizing temperature on microstructure and mechanical properties of laser additive manufactured 300M steel

    300M ultra-high strength steel has been widely used in critical structural components for aviation and aerospace vehicles due to its excellent lateral plasticity, fracture toughness and fatigue resistance. However, the mechanical properties of LAMed 300M steel was much lower than that of the forgings standard. Based on this, the influence of austenitizing treatment on the microstructure and mechanical properties of LAMed 300M steel is investigated within the austenitizing temperature range of 870–1050 ℃. It is found that the dendritic segregation in 300M steel deposits (formed in the laser additive manufacturing) gradually reduces with the increase of the austenitizing temperature, and even completely disappears when the austenitizing temperature reaches 1050 ℃. Besides, the austenite grains and martensite packets in the LAMed 300M steel deposits changes little when the austenitizing temperature rises from 870 to 950 ℃, but significantly coarsenes at the austenitizing temperature above 950 ℃. The tensile test shows that the tensile strength of the samples reaches 2325 MPa after austenitizing heat treatment at 870 ℃ and, then, decreases slightly with the increase of the austenitizing temperature. For yields strength, it decreases slightly when the austenitizing temperature reaches 870–950 ℃, while sharply decreases when the austenitizing temperature is above 950 ℃. Moreover, a little effect of austenitizing temperature on the elongation and percentage reduction of area of the LAMed 300M steel is exhibited.

  • Mengnan Liu

    University of Science and Technology Liaoning

    A student in University of Science and Technology Liaoning,engaged in laser surface modification and corrosion of materials in extreme environments.

    Effects of Y2O3 on corrosion behavior of 304 stainless steel after laser surface modification in high temperature high pressure water

    Stainless steels (SSs) have been widely used as structural materials in many industries because of their excellent corrosion resistance. However, stainless steels are prone to attack after long-term service in nuclear power plant. Laser surface modification (LSM) is an advanced technique which can improve the corrosion resistance of SSs obviously. However, little work has been done to study the corrosion resistance of SSs treated by LSM in nuclear power industry. In this study, the corrosion behaviors of 304 SS treated by LSM with different addition of Y2O3 (0.0%, 0.5%, 1.0%, 1.5% and 2.0%) were investigated in high temperature high pressure water. It was found that the corrosion products on 304 SS are spinel oxide (Fe3O4) and hematite oxide (FeCr2O4) after 500 hours exposure in 290 ℃ water . It was also found that the amount of Fe3O4 is decreased with the increase of the addition of Y2O3. However, the amount of FeCr2O4 is increased with the increase of the addition of Y2O3. Compact hematite oxides were found at the Y2O3 addition of 2.0% .

  • Sai Li

    Liaoning Yinghuan Technology Co., Ltd | Engineer

    Li Sai, graduate degree, majored in Materials Processing Engineering. Mainly engaged in the research of production, processing and performance of metal materials. Now working for Liaoning Yinghuan Technology Co., Ltd. as a technical engineer.

    Study on the Application of Laser Surface Cladding Technology in the Industry of Roller Repair

    Laser surface modification is an advanced surface optimization technique which can improve the wear resistance, corrosion resistance, heat resistance and antioxidant properties obviously. It can also enhance the surface of the product and improve the service life. In this study, wear resistance of the rollers on the rolling mill with or without laser surface cladding (LSM) were studied. The diameters of the rollers were tracked for twelve months. It was found that the change of the diameter after LSM is obviously smaller than that without LSM. The above results showed that the wear resistance of the rollers on the rolling mill was enhanced obviously by laser surface modification.

  • Associate Prof. Fencheng Liu

    Nanchang Hangkong University | Deputy professor

    Fencheng Liu got his Doctor degree at 2011 from Northwestern Polytechnical University, and he was a visiting scholar in University of Louisville (USA) from 2016 to 2017. His researches are mainly in laser additive manusfacturing and high energy welding of superalloys. He is a committee member of Laser Processing Committee of COS, a committee member of Additive Manufacturing and 3D Printing Institution of CMES, and a assistant secretary-general of Welding Society of Jiangxi Procince.

    Regulation of bicrystalline structure and its mechanical property in Inconel 718 superalloy fabricated by laser hybrid manufacturing

    Laser hybrid manufacturing technology is a newly manufacturing method for complex structures using laser additive manufacturing technology on forged for casted substrates. Monolithic components fabricated by laser hybrid manufacturing are made up of two parts including the columnar crystal in the deposition zone and the equiaxed crystal in the substrate area. However, seriously microsegregation of alloying elements leads to the precipitation of brittle Laves phases in the inter dendrites in the manufacturing process. Aimed to improve the mechanical property of hybrid manufactured structure, Laves phase in columnar crystals of deposited area should be eliminated by post heat treatment, however, the high temperature solution treatment will coarsen the grain structure in forged for casted substrates. A novel post heat treatment procedure was adopted including δ phase aging and dissolving at 890°C and 1020 °C sequentially aimed to achieve the dissolving of Laves phase, in which the heat treatment temperature is much lower than the temperature of grain rapid growing. The results show that the fully precipitation of δ phase in deposited area can “cut” the Laves phase into small pieces and dissolve Nb element from Laves phase during the its growing. After solution treated at 1020°C for 30 min, all δ phase disappeared. The equilibrium volume fraction of Laves phase was measured as about 1% and microhardness was decreased gradually during the dissolution process. Meanwhile, the tensile strength tests show an increase of tensile strength by 10.27%, as well as an increase in elongation and the reduction of area at 31.38% and 52.71% after solution and aging treatments.

  • Zhu Baohua

    Dean of Welding Light Source Research Institute of Dazu Laser Technology Industry Group Co., Ltd.

    Zhu Baohua, master degree on Materials Processing Engineering of Harbin Institute of Technology, deputy senior engineer, director of Welding Branch of Chinese Mechanical Engineering Society, deputy director of Youth Committee of Laser Processing Committee of Chinese Optical Society, evaluation expert on National Science and Technology Experts Database and extramural graduate supervisor of Jilin University. He is currently the dean of Institute of Laser Source for Welding in Precision Welding Division, Han's Laser Technology Industry Group Co., Ltd., and also the first branch secretary of Precision Welding Division.
    He has been engaged in the development of advanced laser systems and forward-looking laser welding application for a long time. Until now he has developed direct diode laser product series with all-fiber structure, and high-power fiber lasers with multi-output, which have successfully applied to the field of mechanical industry, new energy industry and achieve mass sales. He has developed the beam shaping modules for three kinds of beams, namely rectangular, square and ring shape, which have greatly enhanced the core competitiveness in the field of plastic welding and soldering welding. The development of sophisticated optical manufacturing processes has successfully solved the problem of the polarizing device assembly and beam shaping systems coupling for green laser. The developed high-power fiber laser beam splitter and QBH fiber have reached the domestic leading level. The successful introduction of nanosecond lasers into the field of dissimilar metal laser welding has solved the welding process problems that traditional lasers cannot solve, which has led to the application of nanosecond lasers in the consumer electronics industry. In 2017 and 2018, more than 4,000 micro-welding systems were sold with sales of nearly 1 billion.Moreover, he has hosted a national key research program, and three Shenzhen technology innovation plan projects, published 14 papers in domestic core journals, and obtained 16 national invention patents, 2 PCT and 43 patents for utility model.

    Microstructure and Properties in diode Laser Melting Deposited AlSi10Mg

    Selective Laser melting (SLM) and Laser melting deposition (LMD) are two typical technologies for laser-based additive manufacturing. In contrast to powder-based SLM, LMD is accomplished by simultaneously delivering metallic powder with the advantages of good performance and high efficiency, and thus it has the potential to produce materials to exact dimensions for aerospace, medical and auto industries. High power diode laser and LMD equipment were depicted in details, and the research on the microstructure and mechanical properties in laser deposited AlSi10Mg was executed. Due to the poor flowability and easy oxidation of aluminum alloy, cavities occurred in the deposited samples. In order to enhance the densification of the sample, the effective methods, such as drying the powder and adjusting shielding gas flow rate, resulted in good results.

  • Associate prof.Bo Song

    Huazhong University of Science and Technology

    Bo Song, associate professor/ doctoral superviser of huazhong university of science and technology, deputy director of rapid manufacturing center, deputy director of wuhan sino-europe additive manufacturing technology joint laboratory, winner of hubei outstanding youth fund, hubei chutian student, and wuhan morning light plan. The main research areas are additive manufacturing (3D printing) and selective laser melting (SLM).

    Study on mechanical and corrosion properties of amorphous reinforced stainless steel composites in-situ prepared by laser additive manufacturing

    In this present study, with addition amorphous in to 316L stainless steel and in situ fabrication during SLM, the composite with a double much improved mechanical and corrosion resistance properties were successfully prepared. The amorphous alloy strengthened stainless steel (SLMed-composite with 10 wt.% addition) exhibited an increased tensile strength from 819 MPa to 1090 MPa and a lower coefficient of friction (from 0.62 to 0.49). The corrosion behavior of SLM-processed 316L stainless steel (SLMed-SS) and SLMed-composite have been investigated in a 3.5% NaCl solution. The results of potentiostatic polarization show that the pitting incubation time of SLMed-SS is much shorter than that of SLMed-composite in the same potential. The enhancements of properties are contributed to the oxygen purification of Y element and solid solution of Co and Mo elements, as well as the grain refinement strengthen with the introduction of the amorphous alloy.

  • Wumei Dong

    China Academy Of Engineering Physics

    The speaker is a joint graduate student of Institute of Materials of China Academy of Engineering Physics, and The North China University of Technology.Her research direction is using laser melting deposition process to prepare oxide dispersion strengthened steel and investigating the microstructure evolution and performance regulation. At present, the preparation parameters of ODS steel have been explored, and the microstructure of ODS steel under different process parameters is also explored.

    Microstructures of ODS-FeCrAl Alloys Produced Using Laser Melting Deposition Process

    The effects of process parameters on the microstructures of oxide dispersion strengthened (ODS) FeCrAl alloys prepared using laser melting deposition process were investigated in this study. By applying laser powers of 600 W, 800 W and 1000 W, and a bidirectional scanning strategy, thin wall FeCrAl samples were fabricated using three kinds of FeCrAl powders. The phases and microstructures of FeCrAl alloy were studied by means of X-ray diffraction (XRD), metallographic examination, scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). The results show that: (1) The FeCrAl alloy prepared using different process parameters all have BCC single-phase solid solution structures. (2) Grains in the prepared FeCrAl alloys are mostly coarse columnar crystals. (3) All prepared alloys are easy to crack or have a tendency to crack during forming. When the alloy contains Y element, it is more prone to crack forming during fabrication, especially when the alloy contains both Al and Y elements. The cracks form form along the grain boundaries of columnar grains, propagating parallel to the deposition direction. The EDS results show that the contents of C and W in the crazing zones are relatively increased, indicating formation of WC. The WC may work as cracking sources during laser melting deposition process.

  • Nannan Lu

    Harbin Institute of Technology

    Currently studying at Harbin Institute of Technology, studying for a Ph.D. in Materials Science and Engineering. The research field is mainly for the laser additive manufacturing and repair technology of metals. Focus on the laser repair process of nickel-based superalloys and related control mechanism of microstructure and performance.

    Epitaxial laser melting deposition of Inconel 718 on directionally solidified nickel-based superalloys: epitaxy and stray grain formation

    Instead of costly directionally solidified (DS) powders, highly cost-effective Inconel 718 polycrystalline powders were introduced to repair DS nickel-based superalloys by epitaxial laser melting deposition (E-LMD). Inconel 718 deposit showed a columnar dendritic structure obtained by epitaxial solidification on the DS substrate. The deposit also retained the orientation of the substrate. Results indicated the feasibility of using polycrystalline powders to repair DS nickel-based superalloys, even for single-crystal superalloys. In addition, stray grains (SGs) formed around the carbides and eutectic phase at the interface between the deposit and substrate. These SGs were due to the formation of misoriented cellular crystal, which was attributed to the segregation of components at the interface between the substrate and the deposit. The SGs in the deposit were related to the unmelted powder and high constitutional supercooling in the liquid.

  • Abdukadir Amar

    China Academy Of Engineering Physics

    The speaker is the joint postgraduate of the Materials Research Institute of China Academy of Engineering Physics and Xinjiang University. The effect of TiC ceramic particle addition on the microstructure and mechanical properties of CrMnFeCoNi high-entropy alloy prepared by laser melting deposition (LMD) was studied. The preliminary results show that the TiC ceramic particles reinforced CrMnFeCoNi high-entropy alloy prepared by laser melting deposition process is a high-entropy alloy composite with uniform precipitation of micron-sized TiC in the single-phase solid solution of FCC. In addition, the results also show that the addition of TiC ceramic particles can effectively adjust the mechanical properties of CrMnFeCoNi high-entropy alloy.

    Effects of Ceramic Addition on Microstructure Evolution and Performance Control of Laser Melting Deposited CrMnFeCoNi High Entropy Alloys

    High-strength CrMnFeCoNi-based High Entropy Alloys have been developed by laser melting deposition, in which tensile properties of them could be adjusted by controlling the quantity of the TiC addition. The CrMnFeCoNi high entropy alloy with 5 wt.% TiC addition has exhibited 723 MPa tensile strength and 32% tensile strain. The improvement in mechanical property is attributed to the introduction of micron TiC reinforced phase, which could promote hinder the propagation of slip bands.

  • Prof. Lechun Xie

    Wuhan University of Technology | Professor

    Dr. Lechun Xie got his PhD degree at Materials Science in Shanghai Jiao Tong University in 2015. From 2011 to 2013, he worked in the Department of Mechanical Engineering at Northwestern University (IL, USA) as a visiting scholar. After receiving his PhD, Dr. Xie continued his postdoc research in Department of Chemical & Materials Engineering at University of Alberta (AB, Canada) from 2015 to 2016. Then, he got the Alfred Deakin Postdoc Research Fellowship and worked in Institute for Frontier Materials at Deakin University (VIC, Australia) as a research fellow from 2016 to 2018. He joined Wuhan University of Technology on May of 2018, and his research focuses on additive manufacturing on titanium alloys and titanium matrix composites.

    Microstructure characterization on 3D-printed Ti-55531 alloy manufactured by Laser Engineered Net Shaping (LENS)

    This work aims to systematically study the microstructure of 3D-printed Ti-55531 alloy by Laser Engineered Net Shaping (LENS). The different shapes with single wall (SW), and Cube are manufactured, and the grain size and phase distribution are characterized and analysed. The results indicate that there is only β phase in the whole area of SW. But in the Cube, the gradient microstructure with α precipitation are formed. The different microstructure are ascribed to the different cooling rates after laser off.

  • Shuo Xiang

    China Academy Of Engineering Physics

    The speaker is a joint graduate student of Institute of Materials of China Academy of Engineering Physics, and Xinjiang University. His research direction is to prepare CrMnFeCoNi high-entropy alloy by laser melting deposition technology. At present, the preparation parameters of CrMnFeCoNi high-entropy alloy with excellent performance have been explored, and the microstructure and mechanical properties of high-entropy alloy under different process parameters are also explored.

    Effects of Process Parameters on Microstructures and Mechanical Properties of Laser Melting Deposited CrMnFeCoNi High Entropy Alloys

    The CrMnFeCoNi high-entropy alloy samples were prepared under the conditions of 1000 W, 1200 W and 1400 W the single direction scanning process and the dual direction scanning process. The phase composition, microstructure, and mechanical properties of CrMnFeCoNi high-entropy alloy were studied by means of X-ray diffraction (XRD) , metallographic examination and mechanical tensile tester. The results show that the CrMnFeCoNi high-entropy alloys prepared under different process parameters are all FCC single-phase solid solution structures. By controlling the laser deposition power, the ratio of columnar crystals to equiaxed crystals in the structure of CrMnFeCoNi high-entropy alloy can be controlled. The sample has a significant anisotropy at low power in single direction scanning process, and with the increase of power it becomes isotropic. The sample with low power in the dual direction scanning process has weak anisotropy and gradually becomes isotropic with the increase of power.

  • Dongdong Wu

    Beijing Xinghang Electromechanical Equipment Co., Ltd. | Engineer

    Dongdong Wu. Male. Born in 1991. Mainly engaged in the research and application of additive manufacturing technology.

    Microstructure and Mechanical Properties of TA15 Titanium Alloy by Laser Hybrid Additive Manufacturing

    new generation of weapon equipment put stringent requirements on the manufacture of products, and a single manufacturing technology could no longer meet the needs of development. Selective Laser Melting (SLM) technology had the ability to manufacture extremely complex components and achieve precision molding. However, it was difficult to balance the high-efficiency and low-cost. Laser Solid Forming (LSF) was a high-efficiency and low-cost manufacturing solution for high-performance complex structural components. In order to meet the needs of large-scale complex components of the new generation of weapon systems, in this paper, the research on the microstructure and mechanical properties of TA15 titanium alloy by laser hybrid SLM/LSF additive manufacturing was carried out. It was found that continuous transition was shown in TA15 by hybrid SLM/LSF forming from SLM to LSF. The features of great shape, smooth surface, dense structure, no defects such as micro-cracks, unfused powders were found. And a great metallurgical bond was presented. β-column crystals along the deposition direction were seen in all SLM zone, LSF zone and transitional heat-affected zone. Grain body microstructure in the as-deposited and annealed TA15 was basically similar, which all were typical Weiss α phase. The hybrid SLM/LSF forming had excellent comprehensive mechanical properties, and the tensile fracture occured in LSF zone. This research laid the technical foundation for the high-efficiency and low-cost hybrid manufacturing engineering application of high-performance complex structural components.

  • Jiang BI

    Harbin Institute of Technology

    Jiang BI,Harbin Institute of Technology doctoral student, major: material science and engineering, research direction: laser additive manufacturing

    Effect of energy density on formability, microstructure and micro-hardness of selective laser melted Sc- and Zr- modified 7075 aluminum alloy

    The effect of energy density on formability, microstructure and micro-hardness of Sc- and Zr- modified 7075 aluminum alloy fabricated by selective laser melting (SLM) has been studied. It was observed that, with the increase of energy density, the density of block specimen increased firstly and then remained unchanged. The spreading and solute redistribution of melt pool were better at a high energy density. When the energy density is 375 J/mm3, the roughness of surface decreased from20.1 to 8.5, which is 59.5% lower than that of 44 J/mm3. Due to heterogeneous nucleation mechanism of Al3(Sc, Zr) particles, the grain refinement is obvious and the average grain size is 0.78 μm at the energy density of 375 J/mm3. With the combination effect of grain refinement and chemical composition, the micro-hardness increased firstly and then decreased with the increase of energy density. As for the SLM part fabricated at 222 J/mm3, the micro-hardness (HV222) increased to the maximum of 128.1 HV, which is 12.5% higher than that of HV333 (113.9 HV).

1.Sponsoring packages

1.1Gold Sponsor Package (¥80,000)

This exclusive advertising package will promote company image, fully show your company in the conference and the exhibition not only during the event, but also a long time after it.

Benefits:

  • Logo on attendee badge & lanyard OR conference bag sponsor
  • Full page proceeding advertisement (back cover OR inside front cover)
  • Logo on the conference backdrop
  • X-rack or poster at the entrance of conference room
  • 20 minutes speech (including Q&A)
  • Insert your company brochures or other advertising materials in attendees’ bag
  • Three free attendees
  • Logo and link on the LPC website
  • Logo on the conference proceeding
  • Logo on the official Wechat promotion
  • Priority to order other sponsor items

 

1.2Silver Sponsor Package (¥60,000)

This advertising package includes several sponsoring items, which will help you to enjoy wide publicity during the conference.

Benefits:

  • Full page proceeding advertisement (inside back cover, opposite contents/agenda page)
  • Logo on the conference backdrop
  • X-rack or poster at the entrance of conference room
  • 20 minutes speech (including Q&A)
  • Insert your company brochures or other advertising materials in attendees’ bag
  • Two free attendees
  • Logo and link on the LPC website
  • Logo on the conference proceeding
  • Logo on the official Wechat promotion
  • Priority to order other sponsor items

 

1.3Package A (¥20,000)

  • LPC coffee break sponsoring (present your company to attendees during our coffee breaks.)
  • Proceeding advertisement Inside page:
  • Company brochure insertion of conference bag
  • Logo on the conference backdrop
  • Logo on the LPC website (linked to your website)
  • Logo on the conference proceeding
  • Logo on the official Wechat promotion

 

1.4Package B (¥10,000)

  • X-rack or poster at the entrance of conference room (prepared by sponsor)      
  • Company brochure insertion of conference bag
  • Logo on the conference backdrop
  • Logo on the LPC website (linked to your website)
  • Logo on the conference proceeding
  • Logo on the official Wechat promotion

 

Each item can be selected separately. If you have any other requirement on the sponsorship, please feel free to contact the conference organizer.

 

Gold Sponsor:

     TRUMPF (CHINA) Co., Ltd.

     http://www.trumpf.cn

Sponser

Huaray Precision Laser http://www.huaraylaser.cn/

Wuhan HGLaser Engineering Co,.Ltd. https://www.hglaser.com/

Everbright Photonics Co., Ltd. http://www.everbrightphotonics.com/

LASERLINE https://www.laserline.com/

IPG http://400.ipgbeijing.com/

WAVELENGTH OPTO-ELECTRONIC TECHNOLOGY CO., LTD. http://www.wave-optics.com/

Exclusive Reservation (Limited 100 seats, First come first served)

RMB 498/person

Registration Process : 

Send a business card to coslpc@chinalaser.org, apply for the “2019LPC Registration Form”, and fill in the registration form receipt;

Audited by the conference group, after the response is approved, you can pay the registration fee and register successfully.

 

Regular Reservation :

Booking Offer Before Jan. 30

Before Feb. 28

Before Mar. 15

1 person enjoy the discount

RMB1000/person

RMB1200/person

RMB1400/person

2 person, second half price

RMB2000/3 person

RMB2400/3 person

RMB2800/3 person

Registration Process : 

Send a business card to coslpc@chinalaser.org, apply for the “2019LPC Registration Form”, and fill in the registration form receipt;

Pay the registration fee and register successfully.

 

On-site Registration : 

RMB 1600/person

Registration process :

Provide business cards on site, register registration information, pay conference fees, and register successfully.

 

Special Note

1. The conference fee only includes meeting materials, doesn’t include transportation and accommodation, the LPC2019 registration fee, and the 2019 industrial laser and system safety training course training fee.

2. Before March 15, 2019, the registration will support the transfer of remittances, and an electronic invoice will be issued before the meeting.

3. After March 15, 2019, only on-site payment will be supported, and an electronic invoice will be issued within 3 weeks after the meeting.

4. Bank payment information is as follows:

Company Name: Shanghai Laser International Communication Co. Ltd.

Name of Deposit Bank: Shanghai Pudong Development Bank Caohejing Branch

Bank Account Number: 9746 0154 7400 05134

(Please indicate with the words as “Forum registration fee and attendee’s name” and return the payment voucher to coslpc@chinalaser.org)

5. If you need to issue an invoice, please return: Remittance unit header + tax number + email address.

6. The payment amount is subject to the payment receipt date that the bank provides.

7. The meeting is only open to professionals in the laser industry, and the final interpretation is owned by the organizing committee.

 

Download the registration form

Ms. Yi Xie

+86-(0)21-64227838
E-mail: xieyi@chinalaser.org
Company: Chinese Optical Society-Laser Processing Committee (COS-LPC)

Ms.Gloria.Xu

+86-(0)21-2020 5520
E-mail: Gloria.Xu@mm-sh.com
Company: Messe Muenchen Shanghai Co., Ltd.