共熔池双TIG焊电弧稳定性研究  

Study on Arc Stability in Twin-electrode TIG Welding With Common Weld Pool

作　　者：王建军[1] 马文新[1] 

机构地区：[1]上海第二工业大学,电子与电气工程学院,上海201209

出　　处：《热加工工艺》2008年第17期95-98,共4页Hot Working Technology

基　　金：上海市教委创新基金资助项目(08ZY81);上海第二工业大学校基金资助项目(DZ207005)

摘　　要：分析了共熔池双TIG焊的特点,通过试验,对由各种不同形态的电流组合构成的双弧系统的电弧稳定性进行了研究,探讨了共熔池双TIG焊过程的电弧系统稳定性控制方法。结果表明:通过控制焊接电流的形态及焊接电流值之间的绝对差值,采用双直流电弧、双脉冲电弧或直流与脉冲的混合电流形式都能得到稳定的双弧系统。但在采用较大的双脉冲电流的条件下,脉冲电流之间需存在交错延时,才能保证双弧的稳定性。The characteristics of twin-electrode TIG welding with a common weld pool were analyzed. Aiming at the different combination of welding current, the arc stability was studied by experiment. The control method of arc stability in twin-electrode TIG welding system were investigated. The results show that the double DC, double pulse and DC-pulse current guarantees the stability of the twin-arc system by controlling the waveform of welding current and absoulte difference between welding arc. Under the condition of high double pulse current value, the waveform with delay is important to preserve the arc stability.

关 键 词：共熔池 双钨极氩弧焊 电弧稳定性 

分 类 号：TG403[金属学及工艺—焊接]