镁合金双弧焊接过程研究与分析  

Research and analysis of magnesium alloy double arc welding process

作　　者：刘冬花[1,2] 聂军[1] 马国红[1] 

机构地区：[1]南昌大学机电工程学院,江西南昌330031 [2]江西技师学院,江西南昌330200

出　　处：《南昌大学学报（工科版）》2014年第2期153-156,共4页Journal of Nanchang University(Engineering & Technology)

基　　金：国家自然科学基金资助项目(61165008);江西省自然科学基金资助项目(20114BAB206004);教育部回国基金资助项目(13006199)

摘　　要：研究了镁合金MIG-TIG双弧焊接方法,通过工艺实验获得了影响焊接过程的工艺参数(电流、弧长、焊丝末端与钨极末端的间距、焊接速度等)。在总电流为140 A,旁路电流为115 A,电弧电压为21 V,焊丝末端与钨极末端间距为3 mm时获得了成形较为美观的焊缝。分析了工艺参数对焊接过程及焊缝成形的影响,为进一步提高镁合金双弧焊接过程稳定性,获得质量高成形好的焊缝提供了一定的理论基础。MIG - TIG double arc welding of magnesium alloy was studied. The craft parameters （ welding current,length of arc, wire spacing, welding speed, etc） were obtained through technology experiments. Getting the shapely weld when the total current of 140 A, bypass current of 115 A, welding voltage of 21 V, welding wire and tungsten electrode spacing at the end of 3 ram. The effect of the process parameters on welding process and weld was analyzed to provide a theoretical basis for further improving the stability of double arc welding of magnesium alloy and obtaining the weld which was in high quality and good forming.

关 键 词：镁合金 双弧焊接 工艺参数 焊缝成形 

分 类 号：TG444[金属学及工艺—焊接]