*Resistance Welding is a thermo-electric process where heat is generated at the interface of the parts to be joined by passing an electrical current through them or a precisely controlled time and under a controlled pressure.

*Resistance welding is conducted as follows: Apply force and current through electrodes contacted metal parts to be welded; and resistance heat is generated at the interface of metal parts and makes a nugget, resulting in melt joint. Though a large current flows, there is no danger of an electric shock because only low voltage is impressed.