Introduction to resistance welding
Resistance welding refers to the method of locally heating a desired piece by using the resistance heat generated by the current passing through the welding piece and the contact as a heat source, and applying pressure at the same time. When welding, there is no need for filler metal, high productivity, small deformation of the weldment, and easy automation.
Resistance welding uses the resistance heat effect generated by the current flowing through the contact surface of the workpiece and the adjacent area to heat it to a molten or plastic state, so that it forms a metal bond. There are four main methods of resistance welding, namely spot welding, seam welding, projection welding and butt welding.