Welding, the welding process, the welded joints in the role of the high temperature to molten state. Was welder is closely attached together, the role of the temperature field, gravity, etc., without pressure, the two melting of the workpiece melting liquid mixing phenomenon. When the temperature is reduced, melting part of the condensation of two workpiece firmly welded together to complete Welding Electrode Materials. Due to the inherent high-temperature phase transition in the welding process, heat affected zone in the welding area. Contrary to the Welding Electrode Suppliers and welding, solid state welding metal melting.