What Is Resistance Welding?

Resistance welding refers to a method that uses strong current to pass through the contact point between the electrode and the workpiece, and generates heat by contact resistance to achieve welding. When welding, the electrode and the workpiece need to be pressured. Resistance welding is divided into spot welding, projection welding, seam welding, butt welding and resistance bolt welding. Due to short power-on time, high production efficiency and stable welding quality. Therefore, it is applied to mass production of welding thin metal plates with a thickness of less than 3mm. Butt welding can also be used for butt welding of section metal plates (such as rail welding), but the capacity of the welding machine needs to be up to 1000kV. A or more. ^[1]