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What is MIG (GMAW or Gas Metal Arc Welding)?

April 26, 2017ARC Gas gmaw metal MIG welding

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What is MIG (GMAW or Gas Metal Arc Welding)?

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MIG welding joins metals by heating them with an arc. The arc is between a continuously fed filler metal electrode and the workpiece. The metal is deposited only when the wire actually touches the work. No metal is transferred across the arc.