Gas metal arc welding, sometimes called by its subtypes metal inert gas or metal active gas welding, is a welding process in which an electric arc forms between a consumable wire electrode and the workpiece metal, heating the workpiece so that it fuses. A shielding gas feeds through the welding gun alongside the wire electrode, shielding the weld from contamination by the surrounding atmosphere. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
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Gas metal arc welding (Wikipedia)
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Gas metal arc welding (GMAW), sometimes referred to by its subtypes metal inert gas (MIG) and metal active gas (MAG) is a welding process in which an electric arc forms between a consumable MIG wire electrode and the workpiece metal(s), which heats the workpiece metal(s), causing them to fuse (melt and join).
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