闪光对焊机是一种应用比较广泛的钢筋加工机械。但它的电极只能开一种槽,焊接一种规格的钢筋。当加工多种规格的钢筋时,需要多次更换电极,这样既麻烦又影响工效。现有一种改进办法,即在电极上开两种槽,将对焊机上钳口的槽用电焊或气焊补平,这样便可减少 Flash butt welding machine is a widely used steel processing machinery. But its electrode can only open a slot, welding a specification of steel. When processing a variety of steel bars, it is necessary to replace the electrodes several times, which is both troublesome and affects work efficiency. An existing improvement method is to open two kinds of slots on the electrode, and to make the slots of the jaws of the welding machine be flattened by electric welding or gas welding, so that the number of slots can be reduced.