4. Semi-automatic MIG and MAG welding
Main characters :
Electrode: fusible metal wire continuously unwound.
Protection: inert or weakly active gas.
Type of current: direct or pulsed.
4.1 Process description
Figure 19 shows a semi-automatic welding system, a process also known as MIG or MAG, depending on whether the gas is Metal Inert Gas or Metal Active Gas. In English-speaking countries, the terms semi-automatic welding, gas metal arc welding or GMA, gas shielded arc welding process are used interchangeably.
Semi-automatic welding is similar to submerged arc welding in terms of the wire electrode. Although sometimes active, the shielding gas plays a much more limited metallurgical...
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Semi-automatic MIG and MAG welding
Refractory electrode welding (TIG)
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