The compound magnetic-field generator was designed to simultaneously generate transverse magnetic-field and alternating parallel magnetic-field during pulsed gas metal arc welding at high welding speed. The influence of compound magnetic field on the temperature distribution was studied based on infrared camera, and droplet and arc behaviour was studied based on high-speed cameras. Results showed that the compound magnetic-field generator regulated the transverse and backward swing of arc and droplet during high-speed pulsed gas metal arc welding. Compared with normal pulsed gas metal arc welding, the heat of molten pool was trended to be transmitted to the edges of weld pool under the action of compound magnetic-field. The maximum welding speed could reach up to 2.0 m min−1.

中文翻译：

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外磁场辅助高速脉冲气体保护金属电弧焊的研究

复合磁场发生器设计用于在高焊接速度的脉冲气体保护金属电弧焊过程中同时产生横向磁场和交变平行磁场。基于红外摄像机研究复合磁场对温度分布的影响，基于高速摄像机研究液滴和电弧行为。结果表明，复合磁场发生器在高速脉冲气体保护金属电弧焊过程中调节电弧和熔滴的横向和反向摆动。与普通脉冲气体保护焊相比，在复合磁场的作用下，熔池的热量有向熔池边缘传递的趋势。最大焊接速度可达 2.0 m min-1。