MIG / GMAW Welding
Gas metal arc welding (GMAW), sometimes referred to by its subtypes,
metal inert gas (MIG) welding or metal active gas (MAG) welding, 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. A constant voltage, direct current power source is most commonly used
with GMAW, but constant current systems, as well as alternating current,
can be used. Originally developed for welding aluminium and other non-ferrous
materials in the 1940s, GMAW was soon applied to steels because it allowed for
lower welding time compared to other welding processes.
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