What does MIG stand for in welding terminology?

MIG stands for Metal Inert Gas, which is a welding process that uses a continuously fed wire electrode and an inert gas to protect the weld pool from atmospheric contamination. The term "inert gas" refers specifically to the shielding gases, typically argon or helium, which protect the molten metal from oxidation and other reactions that could weaken the weld. This process is widely used in various applications due to its versatility and ease of use. Understanding this terminology is critical for anyone working with welding, as it encapsulates both the method and the materials involved in the MIG welding process.