焊接薄板和中等厚度板时 ,要求有高质量且无需补焊的焊接技术。用户常常采用经济的 MIG/MAG(MSG)脉冲电弧焊工艺。为了在脉冲电弧焊时获得可控而不间断的熔滴过渡及一定的熔滴量 ,采用恒流 /恒压调节 (调制方式为脉冲 U/I)。然而 ,这种调节方法针对接触管电阻的变化则效果不佳 When welding thin plates and medium-thick plates, high-quality welding without welding repair is required. Users often use economical MIG / MAG (MSG) pulse arc welding process. In order to obtain a controlled and uninterrupted droplet transfer and a certain amount of droplet in the pulse arc welding, constant current / constant voltage adjustment (pulse U / I modulation) is adopted. However, this method of adjustment is not effective against changes in contact tube resistance