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1.绪言近年来,为了得到高效率电弧焊接,对于多电极焊接做了各种探讨。但是,过去发表的都是在各电极上同时通电的方式,当电极接近并加大电流时,根据毕奥-萨伐尔定律可知,电极间产生的磁场使电弧间产生干扰。也就是说,各电极为同极性时,电弧在电极间相互吸引,电弧不能充分触及母材,因而不能形成良好的焊道。为了实现在各电极接近时能防止电弧干扰现象,研究了各电极不同时通电的
1. Introduction In recent years, various studies have been conducted on multi-electrode welding in order to obtain high-efficiency arc welding. However, in the past, the methods of simultaneously energizing electrodes were disclosed. When the electrodes approach and increase the current, it is known from Biot-Savart’s law that the magnetic field generated between the electrodes interferes with the arc. That is, when the electrodes are of the same polarity, the arc attracts each other between the electrodes, and the arc can not sufficiently touch the base material, so that a good weld bead can not be formed. In order to prevent the arc interference when the electrodes close to the phenomenon of the electrode is not energized at the same time