目前,工业发达国家对焊接设备的可靠、稳定、高效、节能的研究相当重视。磁驱动电弧对焊机是一种具备前述研究综合优点的新设备:它利用运动电弧加热工件,比电阻对焊节能80%,消耗材料比闪光对焊少60%,并不消耗焊丝或保护气体。这种焊机具有非常高的生产率,焊接过程易于自动控制,通常焊接时间只有3～6秒,是闪光焊生产率的两倍以上。这种焊机无摩擦焊那样的机械旋转部 At present, industrialized countries attach great importance to the research of reliable, stable, efficient and energy-saving welding equipment. Magnetically actuated arc butt welder is a new device with the combined advantages of the previous study: it uses a moving arc to heat a workpiece, saving 80% energy over resistive butt and consuming 60% less material than flash butt welding, without consuming wire or shielding gas . This type of welder has very high productivity and the welding process is easy to automate. The welding time is usually only 3 to 6 seconds, which is more than double that of flash welding. This kind of welding machine frictionless welding that mechanical rotation