不同焊接工艺下铜/钢异种金属熔焊接头性能研究

不同焊接工艺下铜/钢异种金属熔焊接头性能研究 Study on performance of copper/steel dissimilar metal fusion welding joint under different welding technology 石玗 SHI Yu 1 first-author 侯旭倩 HOU Xuqian 1 王瑞 WANG Rui 2 李广 LI Guang 1 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室 State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metal, Lanzhou University of Technology State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metal, Lanzhou University of Technology 徐州工程机械集团有限公司 徐州工程机械集团有限公司 Xuzhou Construction Machinery Group Co., LTD Xuzhou Construction Machinery Group Co., LTD 针对新型直连电解铜永久阴极板性能要求,采用光学显微镜、扫描电镜、能谱仪、电子拉伸试验机、金属电导率仪和电化学工作站分别对激光焊和钨极氩弧焊获得的T2紫铜/316L异种金属焊接接头形貌、微观组织、抗拉强度、导电性及耐电化学腐蚀性进行对比研究。发现两种焊接工艺所形成的焊接接头平均抗拉强度差别不大,激光焊焊接接头的导电性及耐腐蚀性优于钨极氩弧焊的焊接接头。激光焊生产制造的直连型电解铜阴极板具有更优越的综合性能。 In order to meet the performance requirements of new direct connected electrolytic copper permanent cathode plate, the morphology, microstructure, tensile strength, conductivity and electrochemical corrosion resistance of Cu/3116 L dissimilar metal welded joint obtained by laser welding and argon tungsten arc welding were compared and analyzed by optical microscope, scanning electron microscope, energy disperse spectroscopy, electronic tensile testing machine, metal conductivity meter and electrochemical workstation. The results show that there is little difference in average tensile strength of the welded joints obtained by these two welding processes, and the conductivity and corrosion resistance of laser welded joints are better than those of TIG welded joints. Therefore, the direct connected electrolytic copper permanent cathode plate made by the laser welding has better overall performance. 直连型阴极板 激光焊 钨极氩弧焊 导电性 耐腐蚀性 TG457.1 国家自然科学基金（51675256）;国防科工局科研基础研究计划项目（JCKY2018427C001） 2022-03-08 9 51