A-TIG焊在不锈钢领域的应用  

Application of A-TIG Welding in Stainless Steel Field

作　　者：蔡养川[1] 罗震[1] 

机构地区：[1]天津大学材料科学与工程学院,天津300072

出　　处：《焊管》2015年第7期1-5,共5页Welded Pipe and Tube

摘　　要：以奥氏体不锈钢为例,简要介绍了A-TIG试验原理以及其在不锈钢领域的应用。系统地分析了活性剂对焊缝组织、力学性能和耐腐蚀性能的影响。目前主要存在三种焊缝熔深增加机理,即"电弧收缩"理论、"阳极斑点"理论和"表面张力温度梯度改变"理论,并对这三种理论进行了系统地阐述。Taking austenitic stainless steel as an example, it briefly introduced the A-TIG test principle in this article,and application of A-TIG wedding in stainless steel field. It systematically analyzed the influence of surfactant on weld organization,mechanical properties and corrosion resistance. At present, there are three types of weld penetration increase mechanism,namely the ＂arc contraction＂ theory, the ＂anode spots＂ theory and the ＂surface tension temperature gradient change＂ theory, it systematically expatiated the above three theories.

关 键 词：焊接 A-TIG 奥氏体不锈钢 熔深 焊缝组织 力学性能 

分 类 号：TG44[金属学及工艺—焊接]