MIG Welding is also known as Gas Metal Arc Welding (GMAW). MIG Welding is a commonly used high deposition rate welding process. MIG welding is referred as a semi automatic welding process.
Benefits of MIG Welding:
- Less skills required
- Welding cleaning work is less
- Welding work can be done without stopping
- Higher deposition rates than SMAW
Primary shielding gasses used are Argon, Argon – 1 to 5% Oxygen, Argon
– 3 to 25% CO2 and Argon/Helium.
Problems face by MIG Welding:
- Irregular wire feed
- Burn back
- Porosity
- Unstable arc
- Difficult arc starting
Weld discontinues due to undercutting, incomplete fusion, incomplete joint penetration, Porosity, Weld metal cracks etc.
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