Research and Application Progress of Laser Metal Deposition
YANG Jiaoxi1 , KE Hua1 , CUI Zhe1 , LIU Qi2,3,4,5, LI Huaixue2,3,4,5, ZHOU Zheng6 , XIAO Junheng6 , ZHANG Zhiyong7
(1. Institure of Laser Engineering, Faculty of Material and Manufacturing, Beijing University of Technology, Beijing 100124, China; 2. AVIC Manufacturing Technology Institute, Beijing 100024, China; 3. Beijing Key Laboratory of High Power Beam Additive Manufacturing Technology and Equipment, Beijing 100024, China; 4. Science and Technology on Power Beam Processes Laboratory, Beijing 100024, China; 5. Aeronautical Key Laboratory for Additive Manufacturing Technologies, Beijing 100024, China; 6. State Key Laboratory for Track Technology of High-Speed Railway, Beijing 100081, China; 7. Teye (Beijing) Technology Development Co., Ltd., Beijing 100043, China)
Abstract：Additive manufacturing is an advanced manufacturing technology that combines materials science, machanical automation and information technology. It has played an increasingly important role in the past 30 years of development. Laser metal deposition (LMD) is an additive manufacturing technology based on directed energy deposition (DED), which has received widespread attention in recent years. The basic operation principle and system composition of LMD technology were described. The research progress and application status of LMD technology at home and abroad were mainly introduced. Some LMD-based technology development and equipment manufacturing were listed. The shortcomings of LMD technology in forming efficiency, forming precision, process stability and performance consistency were pointed out. Finally, Five development trends of LMD technology were summarized : Intensification of material system; Systematic analysis of technological parameters; Improve forming efficiency; Intelligent integrated device control, Expansion of application areas.
2020, 
