T2紫铜光纤激光焊接工艺与性能研究  

Study on Technology and Properties of Fiber Laser Welding T2 Red Copper

作　　者：林龙 梅丽芳 严东兵 谢顺 杨军 Lin Long;Mei Lifang;Yan Dongbing;Xie Shun;Yang Jun(School of Mechanical and Automotive Engineering,Xiamen University of Technology,Xiamen 361024,Fujian,China;Xiamen Intelligent Manufacturing High-end Equipment Research Key Laboratory,Xiamen 361024,Fujian,China;Fujian Provincial Key Laboratory of Advanced Design and Manufacture of Passenger Cars,Xiamen 361024,Fujian,China)

机构地区：[1]厦门理工学院机械与汽车工程学院,福建厦门361024 [2]厦门市智能制造高端装备研究重点实验室,福建厦门361024 [3]福建省客车先进设计与制造重点实验室,福建厦门361024

出　　处：《应用激光》2023年第12期89-97,共9页Applied Laser

基　　金：国家自然科学基金(52375055);福建省科技计划引导性项目(2022H0055);厦门市自然科学基金(3502Z202373056)。

摘　　要：为研究激光焊接紫铜工艺与质量特性,通过改变激光功率、焊接速度、焊接次数、表面处理方法对试样进行激光焊接,从焊缝表面形貌与熔宽对连接质量进行分析,并检测焊接试件在通电下的温升与电阻。结果表明,在选定的参数范围内,随着激光功率增大,焊接速度减小,试样接头焊缝熔宽增大,电阻减小,温升速率变慢。当激光功率为2 000 W,焊接速度为1.25 mm/s,焊接次数为2次,表面做打磨涂黑复合处理的试样焊缝表面形貌较好,此时焊缝熔宽为0.669 mm,电阻为1.645μΩ,温升速率最慢。In order to study the process and quality characteristics of laser welding red copper,this paper conducted laser welding on the sample by changing the laser power,welding speed,welding times,and surface treatment method,analyzed the connection quality from the aspect of weld surface morphology and weld width,and detected the temperature rise and resistance of the welding specimen under electricity.The results show that increasing laser power leads to a decrease in welding speed,expansion of weld width,reduction in resistance,and a slower rate of temperature rise.Optimum results were obtained when the laser power was set at 2000 W,the welding speed at 1.25 mm/s,and the number of welds at two.Further enhancement of weld surface morphology was achieved through polishing and blackening the surface.Under these conditions,the weld width was 0.669 mm,the resistance was at 1.645μΩ,and temperature rose at the slowest rate.

关 键 词：激光焊接 紫铜 焊接工艺 导电 温升 

分 类 号：TG456.7[金属学及工艺—焊接]