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In Gas Metal Arc Welding (GMAW), also known as Metal Inert Gas
(MIG) welding, an electric arc is established between the
workpiece and a consumable bare wire electrode. The arc
continuously melts the wire as it is fed to the weld puddle. The
weld metal is shielded from the atmosphere by a portion of the
welding torch.
Continuing developments have made the mig process applicable
to the welding of all commercially important metals such as
steel, aluminum, stainless steel, copper and several others.
Materials above .030 in. (.76mm) thick can be welded in all
positions, including flat, vertical and overhead.
Key Benefits;
- The mig welding process provides many advantages in manual and
automatic metal joining for both low and high production
applications. Its combined advantages when compared to covered
(stick) electrode, submerged arc, and tig are:
- (1) Welding can be done in all positions.
- (2) No slag removal
required.
- (3) High weld metal deposition rate.
- (4) Overall times
for weld completion about 1/2 that of covered electrode.
- (5) High
welding speeds. Less distortion of the workpiece.
- (6) High weld
quality.
- (7) Large gaps filled or bridged easily, making certain
kinds of repair welding more efficient.
- (8) No stub loss as with
covered electrode.
MIG welding is faster.
MIG welding requires a moderate level of
skills.
MIG welding can be done on a wide range of
metals.
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