MIG welding (metal inert gas welding) English: metal inert-gas welding with consumable electrode, outside plus gas as arc media and protect the metal droplet, the weld pool and weld metal arc welding of high-temperature zone method, called melting Nickel Welding gas shielded arc welding. Solid wire with an inert gas (Ar or He) shielded arc welding method known as metal inert gas welding, referred to as MIG welding.