随着机械制造业和化工工业的发展,以不锈钢作为接触强腐蚀零件的材质不断增多,所以为提高加工不锈钢的生产率,目前许多工厂采用等离子弧切割工艺进行有色金属和不锈纲零件的成型加工。但是在等离子弧切割过程中,往往产生“双弧”现象。这样就严重影响了等离子弧的稳定,使其电流降低,弧柱温度下降,切割 With the development of machinery manufacturing and chemical industry, stainless steels are used as materials for contact with strongly corroded parts. Therefore, in order to improve the productivity of stainless steels, many factories currently use plasma arc cutting process for forming non-ferrous metal and stainless steel parts . However, in the plasma arc cutting process, often have a “double arc” phenomenon. This severely affects the stability of the plasma arc, so that the current decreases, the arc column temperature drops, cutting