磁驱动电弧对焊(又称旋转电弧对焊)是一种很有发展前途的焊接方法。磁驱动电弧对焊利用电弧在磁场中会发生磁偏吹现象,使电弧在一个特殊安排的磁场控制下沿着待焊接头飞速旋转,电弧的高温将工件端面加热,当达到熔化状态时,迅速加压顶锻,形成接头。二次加热程式的磁驱动电弧焊质量优良,在不用保护气体的情况下,仍能获得令人满意的接头,电能消耗为其他焊接方法的5～10％,焊接时间为 Magnetically driven arc welding (also known as rotary arc welding) is a promising welding method. Magnetically driven arc welding using arc in the magnetic field will occur partial magnetic blow phenomenon, so that the arc in a special arrangement of the magnetic field along the rotor to be welded rapid rotation, the high temperature of the workpiece surface heating arc, when it reaches the melting state, quickly Pressurized forging to form a joint. Magnetically driven arc welding of the second heating program is of good quality and can obtain a satisfactory joint without the use of a shielding gas, the electrical energy consumption is 5 to 10% of that of other welding methods, the welding time is