高强铝合金熔化极等离子弧复合焊接  

Plasma-MIG Hybrid Arc Welding Process on 2219 High Strength Aluminum Alloy

作　　者：王学远[1] 别亚星 杨学勤[1] 成群林[1] 姜恒[1] 孙锡建 

机构地区：[1]上海航天精密机械研究所,上海201600

出　　处：《航天制造技术》2015年第1期11-14,共4页Aerospace Manufacturing Technology

摘　　要：利用自动化Plasma-MIG复合电弧焊接实验平台,进行了2219高强铝合金表面堆焊实验。结果显示:Plasma-MIG复合电弧焊接工艺对铝合金具有良好的清理作用,能够改善高强铝合金的焊接性,提高焊缝组织硬度。等离子弧的引入改变了液态金属的流动方式,有利于过饱和氢气析出,减少焊缝气孔缺陷,当工艺参数匹配合理时,焊缝成形良好,可实现2219高强铝合金的高质量焊接。2219 high strength aluminum alloy surfacing welding was completed by the automation Plasma-MIG hybrid arc welding system. The results show that there is a good cleaning effect in Plasma-MIG hybrid arc welding, and it is possible to improve the welding quality of high strength aluminum alloy and increase hardness of the solidified structure of weld metal Plasma arc changes the flow of molten metal, accelerates precipitation of saturated hydrogen and reduces the porosity of weld bead. High quality welding for 2219 high strength aluminum alloy can be achieved when the process parameters match reasonably.

关 键 词：2219铝合金 Plasma—MIG复合电弧焊接 焊缝组织 

分 类 号：TG457.14[金属学及工艺—焊接]