MIG短路过渡立焊技术研究及应用  

Research and application of MIG vertical welding technology using short circuiting transfer

作　　者：都东[1] 王鹏[1] 邹怡蓉[1] 张骅[1] 王力[1] 

机构地区：[1]清华大学机械工程系先进成形制造教育部重点实验室,北京100084

出　　处：《电焊机》2013年第3期45-47,共3页Electric Welding Machine

基　　金：国家863计划目标导向课题(2007AA04Z258)

摘　　要：针对大型水轮机长期运行中马氏体不锈钢叶片局部磨蚀的自动修复问题,提出采用MIG短路过渡向下立焊的工艺方法。通过调整焊接工艺参数实现了稳定的MIG短路过渡。实验表明,该工艺适应立焊位置作业,其熔深适度,熔敷效率高,补焊焊缝成形良好。研究成果为实际工业应用提供了基础。Long-term service of large hydropower stations confronts the problem of stainless steel blade erosion of hydraulic turbines. A method of vertical down welding is proposed for the automatic in-situ maintenance.Stable MIG, short circuiting transfer is achieved thruugh process parameters adjustment.Experiments demonstrate that the proposed method ensures appropriate penetration depth, higll deposition efficiency and satisfactory weld appearance.The method provides fundamental basis for industrial application.

关 键 词：熔化极惰性气体保护焊 熔滴短路过渡 大型水轮机叶片修复 

分 类 号：TG457.11[金属学及工艺—焊接]