MIG welding is a welding process based on the creation of an electrical arc
between a welding torch (anode) and the workpiece (cathode), see figure 2. Heat is transferred
to the workpiece through a plasma. The intensity of the power input of this process is around
103 W/cm2 (significantly lower than for laser welding), which produces a weld of small depth
and medium width. The welding speed is also lower than the one provided by the laser
process and this can result in some distortion of the workpiece, which often needs to be
machined afterwards. But MIG welding is interesting from an industrial point of view because
it has a good bridging ability, the equipment costs are low compared to laser welding, and this
process is also very energy efficient (60 to 80 %).
between a welding torch (anode) and the workpiece (cathode), see figure 2. Heat is transferred
to the workpiece through a plasma. The intensity of the power input of this process is around
103 W/cm2 (significantly lower than for laser welding), which produces a weld of small depth
and medium width. The welding speed is also lower than the one provided by the laser
process and this can result in some distortion of the workpiece, which often needs to be
machined afterwards. But MIG welding is interesting from an industrial point of view because
it has a good bridging ability, the equipment costs are low compared to laser welding, and this
process is also very energy efficient (60 to 80 %).
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