Welding method of sheet metal structure processing. Double sided single point welding. All universal welding machines adopt this scheme. It is suitable for small parts and large parts around the welding point. Single side single point welding. When the accessibility of the electrode on one side of the part is poor or the part is large and the secondary circuit is too long, this scheme can be adopted. When feeding from one side of the weldment, copper pad should be added on the other side to reduce the shunt and act as the fulcrum of the reaction force). Single side double spot welding. When feeding from one side, two points should be welded at the same time to improve productivity. The phenomenon of invalid shunt often occurs in single side feeding, which wastes electric energy. When the distance between points is too small, welding will not be possible.
