中碳调质钢30CrMnSiA补焊工艺方法研究  

Research on Medium Carbon Quenched and Tempered Steel 30CrMnSiA Repair Welding Technology

作　　者：贾宝丽 吴俊峰 李攀 王志刚 苏太举 李福安 王琳 

机构地区：[1]新东北电气集团高压开关设备有限公司,沈阳110027

出　　处：《焊管》2017年第5期49-51,共3页Welded Pipe and Tube

摘　　要：为得到中碳调质30CrMnSiA钢合理的补焊工艺,采用钨极氩弧焊,选用A302焊条,通过实际操作确定了最佳焊接参数以及预热、缓冷温度。选择的工艺参数可以有效防止补焊过程中裂纹的产生,在一定程度上改进了30CrMnSiA钢补焊方法,在劳动强度和生产效率以及成本上优于以往的手工电弧焊工艺方法,焊接质量达到了要求。In order to obtain the reasonable repair welding technology of medium carbon quenched and tempered steel 30CrMnSiA, The optimal welding parameters were determined through actual operation by using TIG welding and A302 electrode, as well as the preheat and slow cooling temperature. The selected process parameters can effectively prevent welding cracks generation, improved the repair welding method of 30CrMnSiAa to a certain extent. It was superior to the previous manual arc welding process on the labor intensity, production efficiency and labor cost, the welding quality reached the requirement.

关 键 词：焊接 中碳调质钢 30CRMNSIA钢 钨极氩弧焊 补焊焊接工艺 

分 类 号：TG441[金属学及工艺—焊接]