GMAW (MIG/MAG) Welding Machine

 

Gas Metal Arc Welding (GMAW) is frequently referred to as MIG welding. Mig welding is a commonly used high deposition rate welding process. Wire is continuously fed from a spool. MIG welding is therefore referred to  as a semiautomatic welding process.

 

The gas metal arc welding process (GMAW) utilizes the heat of an arc between a continuously fed consumable electrode and the work to be welded. The heat of the arc melts the surface of the base metal and the end of the electrode. The melted off the electrode is transferred thorugh the arc to the work where it becomes the deposited weld metal. Shielding is obtained from an envelope of gas, which may be an inert gas, or a mixture.

 

The sheilding gas surrounds the arc area to protect it from contamination from the atmosphere. The electrode is fed into the arc automatically, usually from a coil. The arc is maintained automatically and travel and guidance can be manually or by machine.

 

The metal being welded dictates the composition of the electrode and the shielding gas. The shielding gas and the type and size of the electrode affects the type of metal transfer. The metal transfer mode is one way of identifying the variations of the process.

 

Mig Welding benefits:-

- All position capability

- Higher deposition rates than SMAW

- Less operator skill required

- Minimal post weld cleaning is required

- Reductions of smoke and fumes

 

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