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This is an arc welding process where hardfacing wire is fed continually from a spool through the welding torch into the arc, where it is melted and transferred to the work piece.
In the case of MIG/MAG welding, the weld pool is protected from the atmosphere with a stream of shielding gas. These MIG/MAG processes are very flexible, i.e. they can be partially or fully mechanised and they are suitable for a wide range of applications.
Wire is also used as the hardfacing consumable in the submerged arc process. In this process a mineral based fluxing powder flows around the consumable wire and is melted by the arc. It forms a gaseous shield around the arc and also forms a slag on top of the weld pool, thereby shielding the cooling weld pool from the atmosphere.
benefits of GMAW are;
• Flexible Operation
• Can Be Partially Or Fully Mechanised
• Suitable For Wide Range Of Applications
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