MIG (Metal Inert Gas) welding also referred to as GMAW (Gas Metal Arc Welding) or short circuit transfer, MIG is a welding process that joins metal by heating them with an electric arc, shielded by externally supplied shielding gas such as CO2. When welding carbon steel, a gas mixture of CO2 and Argon is commonly used. Metal is deposited when the wire actually touches the workpiece; it is not transferred over the arc.
The MIG Welding process is common in construction, repair and maintenance, power generation, aircraft, aerospace, automotive and special interest auto, marine, sporting equipment etc. Process can be manual, semi-automatic or robotic.