摘要
Abstract
In order to improve the welding performance of Q350EWR1 high weather resistant steel,this article adopts pulse welding method.By using high-speed photography and recorders to observe the shape of the arc,as well as the waveform of welding current and arc voltage,under the condition of pulse width modulation(PWM)feedback,adjusting the timing of droplet shedding and consistency of droplet transition for different wire feed rates.Find out the optimal pulse frequency,pulse rise slope,pulse fall slope,pulse peak value,pulse base value to ensure the stability of welding arc,effectively control the splash amount,save welding materials and improve welding production efficiency.It has been applied in the GS6 weld-ing machine developed by Panasonic,which provides a valuable reference for the welding process of Q350EWR1 high weathering steel.关键词
Q350EWR1高耐候钢/脉冲宽度调制/电弧稳定性/熔滴过渡/飞溅Key words
Q350EWR1 high weather resistant steel/pulse width modulation/arc stability/droplet transfer/splash分类
矿业与冶金
