MIG Welder Metal Inert Gas Welding, Fusion welding process limited to application on structures of limited quality. Exploit the high temperature caused by an electric arc between an electrode body fuse (wire, DC power supply and reverse polarity) and the work piece. The wire electrode is the filler material. Typically, the progress of the wire occurs through a mechanism of thrust, this method is impractical for aluminum and its alloys because the risks of a failure of the wire are high. There is a device located in the torch, which pulls the wire (which can be pushed together). The speed of the wire varies between 10-20 m / min and controlled by the current variation of the arc, the power is independent.
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