高频脉冲TIG焊电源  

High frequency pulse tungsten inert gas welding power source

作　　者：马淼[1] 黄鹏飞[1] 卢振洋[1] 

机构地区：[1]北京工业大学机械工程与应用电子技术学院,北京100124

出　　处：《电焊机》2015年第10期34-37,共4页Electric Welding Machine

基　　金：国家自然科学基金资助项目(51075011)

摘　　要：采用两套斩波电路输出端并联的方式,设计了一台高频直流脉冲TIG焊电源。该电源可以输出不同频率、不同占空比、具有陡峭上升沿和下降沿的脉冲电流,并且基值电流和峰值电流可以独立调节。对比了常规直流TIG焊和高频直流脉冲TIG焊电弧的挺直度,结果表明,在电流平均值相同的情况下,无论在高速焊接还是V型坡口焊接中,高频电弧都具有良好的挺直度,焊接工艺性能明显优于普通直流TIG焊。A high frequency pulse TIG welding power is designed using two sets of chopper circuit outputs in parallel manner. The different frequency and duty ratio,with steep rising and falling edge of the pulse current can be realized,and the base current and peak current can be regulated respectively. Comparing the arc stiffness in the conventional TIG welding with high frequency pulse TIG welding,the results show that both in high speed welding or v-shaped groove welding,the good arc stiffness can be obtained in high frequency arc welding,when average current is in the same value,and the welding performance is obviously better than that in ordinary direct current TIG welding.

关 键 词：高频脉冲 TIG焊 电弧挺直度 

分 类 号：TG434[金属学及工艺—焊接]