Visual Observation of Plasma Morphology During Fiber Laser-TIG Arc-Hybrid Welding

被引：0
|
作者：
Zou J. [1 ]
Wang L. [1 ]
Zhu B. [1 ]
Xiao R. [1 ]
Wu Q. [1 ]
Zheng K. [2 ]
机构：
[1] High-Power and Ultrafast Laser Manufacturing Laboratory, Institute of Laser Engineering, Beijing University of Technology, Beijing
[2] CRRC Qingdao Sifang Co., Ltd., Qingdao, 266111, Shandong
来源：
Zhongguo Jiguang/Chinese Journal of Lasers | 2019年 / 46卷 / 12期
关键词：
Fiber laser; Hybrid welding; Laser technique; Light intensity; Multiple imaging; Plasma;
D O I：
10.3788/CJL201946.1202007
中图分类号：
学科分类号：
摘要：
In this study, various morphological features of plasma were studied by using the visual observation during fiber laser-TIG arc hybrid welding. The results show that based on the non-uniform distribution of light intensity of plasma, approximately 3-4 images of plasma can be obtained simultaneously by using the multi-imaging method and the metal and arc plasma can be distinguished. Compared with the Ar shielding gas, the metal and arc plasma can be distinguished more easily under the He atmosphere. Under the same arc current and imaging conditions, the area of the hybrid welding plasma is obviously larger than that of the single arc plasma, and the area of the plasma in hybrid welding with an TIG arc-laser mode is obviously larger than that of the plasma in hybrid welding with a laser-TIG arc mode. Further analysis shows that the metal vapor and shielding gas are not fully mixed during the hybrid welding. In addition, metal plasma significantly affect the morphology and stability of the hybrid-welding plasma. © 2019, Chinese Lasers Press. All right reserved.
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  • [1] Steen W.M., Arc augmented laser processing of materials, Journal of Applied Physics, 51, 11, pp. 5636-5641, (1980)
  • [2] He S., Chen H., Cai C., Et al., Influence of He-Ar mixed shielding gas on laser-MIG hybrid welding characteristic of aluminum alloys, Chinese Journal of Lasers, 45, 12, (2018)
  • [3] Hu L.H., Huang J., Wu Y.X., Et al., Study on coupling mechanism and metal transfer in laser double-wire MIG arc hybrid welding, Chinese Journal of Lasers, 43, 6, (2016)
  • [4] Tang G., Chen H., Yang X.Y., Et al., Effects of different welding process on the electronic temperature of plasma and weld shape during laser-MIG hybrid welding of A7N01P-T4 aluminum alloy, Journal of Laser Applications, 30, 2, (2018)
  • [5] Chen Y.B., Chen J., Li L.Q., Et al., Properties of arc and weld in laser-TIG hybrid process, Transactions of the China Welding Institution, 24, 1, (2003)
  • [6] Naito Y., Mizutani M., Katayama S., Penetration characteristics in YAG laser and TIG arc hybrid welding, and arc and plasma/plume behaviour during welding. Welding Phenomena in Hybrid Welding Using YAG Laser and TIG arc, Welding International, 20, 10, pp. 777-784, (2006)
  • [7] Liu L.M., Chen M.H., Effect of laser pulse on recovery delay of arc plasma based on ion migration behavior in the pulsed laser-arc hybrid welding process, Optics and Lasers in Engineering, 51, 2, pp. 96-103, (2013)
  • [8] Wang L.D., Li M., Zou J.L., Et al., Multiple imaging characteristics of plasma in laser-tungsten inert gas arc hybrid welding, Chinese Journal of Lasers, 46, 3, (2019)
  • [9] Cai C., Chen H., Zhang W.H., Research status and development prospects of laser welding under vacuum, Opto-Electronic Engineering, 44, 10, (2017)
  • [10] Luo Y., Tang X.H., Lu F.G., Et al., Effect of subatmospheric pressure on plasma plume in fiber laser welding, Journal of Materials Processing Technology, 215, pp. 219-224, (2015)
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