低碳钢双丝气体保护焊工艺设计  

Design of tandem GMAW procedure for low carbon steel

作　　者：张辉[1] 罗震[1] 曲仕尧[2] 敖三三[1] 刘为东[1] 

机构地区：[1]天津大学材料科学与工程学院,天津300072 [2]山东大学材料科学与工程学院,山东济南250061

出　　处：《焊接技术》2016年第10期38-41,1-2,共4页Welding Technology

摘　　要：双丝气体保护焊是一种高效化焊接方法,能够在保证焊接质量的前提下进行高速焊接。本文基于焊接机器人系统,研究了焊接电流、电压和速度对电弧稳定性、飞溅、焊缝成形及微观组织的影响规律,并改进双丝焊工艺。研究结果表明:控制前丝与后丝焊接电流、电弧电压的差值在一定范围内可实现1.2 m/min高效稳定焊接,但当焊接速度进一步提高时会影响焊接质量。优化后的焊接工艺方案:前丝焊接电流260 A、后丝焊接电流240 A、前丝电弧电压24.7 V、后丝电弧电压23.9 V、焊接速度1 m/min。Tandem arc welding was a kind of high efficiency welding method, which could guarantee the weld quality on a high welding speed. Therefore, three parameters, including the welding current, the are voltage and welding speed, were investigated to the effect on arc stability, spatter, weld forming and microstructure. The results indicated that high efficiency welding with good quality could be obtained by keeping the difference between the previous arc and the latter arc in a certain range. When the welding speed increased to 1.2 m/min, the weld quality would be decreased. A better welding parameters were listed as follow: the current of previous arc was 260 A, latter one was 240 A, the voltage of previous arc was 24.7 V, the latter one was 23.9 V, and the welding speed was 1 m/min.

关 键 词：高效化焊接 双丝气体保护焊 工艺设计 

分 类 号：TG444.77[金属学及工艺—焊接]