What is MIG welding?
The Metal Inert Gas (MIG) welding process forms an electric arc between a consumable wire electrode and the work piece. This heats the work piece metals so they melt and join. Both the wire electrode and a shielding gas are fed through the welding torch.
MIG welding is also known as also often known as either Gas Metal Arc Welding (GMAW) or Metal Active Gas (MAG) welding.
- Simplicity – MIG welding is quick and easy to learn compared to TIG welding.
- Versatility – can be used to weld a wide variety of metals.
- Speed – welding is quick compared to TIG welding.
- Automation – easy to adapt for robotic automation
- Limitations on location – MIG welding is not suitable for outside use because the volatility of the air can disperse the shielding gas.
- Quality – MIG welding can produce more quality problems than TIG welding, the main ones being dross and porosity which can cause weaker welds.