GAS METAL ARC WELDING
Definition
<GAS METAL ARC WELDING> is <ARC WELDING> where shielding is obtained entirely from an externally supplied gas or gas mixture. The electrode wire for <GMAW> is continuously fed into the arc and deposited as weld metal. This process has many variations depending on the type of shielding gas, the type of metal transfer, and the type of metal welded