11.5.2 Welding equipment for GMAW
1) Welding source: GMAW adopts DC welding source generally, and the power of welding source
depends on the desired current range in different applications.
2) Wire feed system: Generally, the wire feed system consists of wire feeder (including motor, reducer,
aligning wheels and wire feed wheel), wire feed hose, wire spool and other components.
3) Welding torch: The welding torch for GMAW can be classified into semi-automatic torch and
automatic torch, and the former can be classified into air-cooled torch and water-cooled torch according
to different cooling methods.
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