两种光束偏角下的铜-钢激光焊接工艺  

Copper-Steel Laser Welding Process under Two Laser Deflection Angles

作　　者：徐爱民 汤超 李周选 何卫 叶成 吴昊 Xu Aiming;Tang Chao;Li Zhouxuan;He Wei;Ye Cheng;Wu Hao(Zhejiang Huadian Equipment Testing Institute Co.,Ltd.,Hangzhou,Zhejiang 310015,China;Wuhan NARI Electric Power Engineering Technology&Equipment Co.,Ltd.,Wuhan,Hubei 430415,China)

机构地区：[1]浙江华电器材检测研究所有限公司,浙江杭州310015 [2]武汉南瑞电力工程技术装备有限公司,湖北武汉430415

出　　处：《激光与光电子学进展》2021年第11期263-270,共8页Laser & Optoelectronics Progress

基　　金：浙江华电器材检测研究所有限公司科技项目(5211HD190001)。

摘　　要：铜具有很高的热导率和激光反射率,在铜-钢激光焊接过程中铜侧易出现未熔合和咬边缺陷,针对这一问题,使用4 kW光纤激光器进行两种激光光束偏角下的T2紫铜和SUS304奥氏体不锈钢的激光焊接工艺研究,发现激光光束向钢侧偏转能显著增加铜的熔化量,进而抑制焊缝成形缺陷,促进焊缝组织混合,优化焊缝连接形式,并促使铜侧界面处成分平缓过渡,得到强度稳定的焊接接头。Copper has extremely high thermal conductivity and laser reflectivity. Hence,incomplete fusion and undercut problems commonly occur on the copper side during the laser welding of copper and steel. Herein,the laser welding process of T2 copper and SUS304 austenitic stainless steel was performed under two laser deflection angles using the 4-k W fiber laser. The deflection of the laser beam on the steel side can significantly increase the amount of copper in the weld,suppress weld forming defections,promote the mixing of the weld microstructure,optimize the connection form of the weld joint,and promote the smooth transition of components at the copper side interface.Consequently,reliable weld joints can be obtained.

关 键 词：激光光学 激光焊接 T2紫铜 SUS304 光束偏角 

分 类 号：TG456.7[金属学及工艺—焊接]