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光纤激光与GMAW-P复合焊接等离子体及熔滴过渡动态特征研究

Investigation of Plasma and Metal Transfer Dynamic Behavior During Fiber Laser GMAW-P Hybrid Welding

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摘要

研究了高功率光纤激光与脉冲气体保护焊(GMAW-P)复合焊接中的等离子体动态行为、熔滴过渡模式以及电信号特征。结果表明, 光纤激光焊接可以采用纯Ar气作为保护气体, GMAW-P电弧与光纤激光复合后会导致激光等离子体膨胀增大, 电弧的弧长变短。比较电压概率密度可以看出, 激光引导模式相较于电弧引导模式时的负载动态波动更为剧烈。

Abstract

The dynamic behavior, metal transfer mode, as well as the characteristics of electrical signals during the fiber laser with high power and the pulsed gas metal arc welding (GMAW-P) hybrid welding process are studied. The results show that the pure Ar gas can be used as the shielding gas in the fiber laser welding. The mixing of the GMAW-P arc with the fiber laser leads to the expansion of laser plasma and the shortening of arc length. The comparison results of the voltage probability density show that the dynamic load fluctuation of the laser-leading mode is much more violent than that of the arc-leading mode.

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中图分类号:TG456.7

DOI:10.3788/cjl201744.0402008

所属栏目:激光制造

基金项目:国家自然科学基金(51505271)

收稿日期:2016-09-08

修改稿日期:2016-10-12

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作者单位    点击查看

李敏:上海电力学院能源与机械工程学院, 上海 200090上海交通大学上海市激光制造与材料改性重点实验室, 上海 200240
张旺:上海电力学院能源与机械工程学院, 上海 200090液化空气(中国)研发有限公司, 上海 200233
华学明:上海交通大学上海市激光制造与材料改性重点实验室, 上海 200240
李芳:上海交通大学上海市激光制造与材料改性重点实验室, 上海 200240

联系人作者:李敏(zzlimin@gmail.com)

备注:李敏(1982-), 女, 博士, 讲师, 主要从事激光焊接与熔覆方面的研究。

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引用该论文

Li Min,Zhang Wang,Hua Xueming,Li Fang. Investigation of Plasma and Metal Transfer Dynamic Behavior During Fiber Laser GMAW-P Hybrid Welding[J]. Chinese Journal of Lasers, 2017, 44(4): 0402008

李敏,张旺,华学明,李芳. 光纤激光与GMAW-P复合焊接等离子体及熔滴过渡动态特征研究[J]. 中国激光, 2017, 44(4): 0402008

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