摘要
提出了活性熔化极气体保护焊新方法,可增加焊接熔深,改善难熔焊接结构的熔合不良,获得高质量的焊接接头.对活性熔化极气体保护焊电弧状态和熔池表面形态进行了采集和分析,用钨粒子示踪法进行试验,分析了电弧形态和熔池流动.结果表明,活性熔化极气体保护焊电弧收缩显著,电弧形态更加集中,熔池内部液态金属的流动方向为从熔池周边向中心流动,熔池流动更为有序.对于钢的活性熔化极气体保护焊方法,熔池流动行为改变是增加焊接熔深的主要因素.
A-MAG welding process was proposed,by which welded joints of high quality can be obtained. Arc morphology and weld pool flowing of A-MAG welding are observed and analyzed. In which the flow of molten pool was studied by using the tungsten particle tracer method. The test results show that the A-MAG welding arc is shrinking. The weld pool is more concentrated,the flow direction of liquid metal in the molten pool is from the periphery to the centre and the flow is more orderly. The change of the fluid flow in the molten pool is main factor of increased penetration.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2014年第10期41-44,115,共5页
Transactions of The China Welding Institution
基金
国家自然科学基金资助项目(51005069
51205106)
四方股份工艺开发资助项目(2012069)
