Welding process, (Gas Metal Arc Welding Process: GMAW) welding, gas metal arc welding, or so-called overheating covers (Metal Inert Gas MIG comes from) is the electric arc welding process in which an arc welding wire. Bare is entered correctly on the metal work piece. The heat from the arc voltage to make the ends of wire melting welding. Fill to the top with water, metal pieces, including work as a concept. At the same time, the area of welding arc's town was covered with the gas, which paid the welding. To protect against oxygen and nitrogen dioxide gas from the atmosphere.