Metal Inert Gas (MIG) Welding

Metal Inert Gas Welding (Metal active gas (MAG) welding , Gas Metal Arc Welding) is a arc welding process, in which the weld is shielded by an external gas (Argon, helium, CO2, argon + Oxygen or other gas mixtures). It is a semi-automatic or automatic arc welding process in which a continuous and consumable wire electrode and a shielding gas are fed through a welding gun.

Advantages

• The major advantage of MIG welding is that high quality welds can be produced much faster than with SMAW or TIG welding.
• Since flux is not used, there is no chance for the entrapment of slag in the weld metal.
• The gas shield protects the arc so that there is very little loss of alloying elements as the metal transfers across the arc. Only minor weld spatter is produced, and it is easily removed.
• This process is versatile and can be used with a wide variety of metals and alloys, including aluminum, copper, magnesium, nickel, and many of their alloys, as well as iron and most of its alloys. The process can be operated in several ways, including semi- and fully automatic. MIG welding is widely used by many industries for welding a broad variety of materials, parts, and structures.