In Metal Inert Gas welding (MIG) or Gas Metal Inert Gas Welding (GMAW), the welding is made by high heat of an electric arc between a continuously fed consumable electrode wire and the material to be joined with a shielding gas (inert gas). This inert gas will prevent the contamination of welding area by oxygen and nitrogen in the atmosphere.
In MIG welding, a metal wire is fed continuously, from a reel
through a nozzle to the metal surface.
Depending upon the materials to be welded various shielding gases
used are: CO2 , Argon, Argon-Helium mixture, Argon-Oxygen
mixture.
Advantages
No flux required
High weld speed
Increased corrosion resistance
Easily automated welding
Weld all metals including aluminium and ss
High economy
No comments:
Post a Comment