This week's special feature is Metal Inert Gas or MIG welding is a welding process in which an electric arc forms between a consumable wire electrode and a work piece metal, causing them to melt or join. Along with the wire electrode, a shielding gas feeds through the welding gun, which shields the process from contaminants in the air. MIG welding is the most common industrial welding process, preferred for its versatility and speed. MIG Welding is often performed inside to avoid outside factors that could contaminate for the weld.
Tungsten Inert Gas or TIG Welding is an arc welding process that uses tungsten electrodes to produce a weld. The weld area should be protected from contamination by an inert shielding gas contained often by purge paper.
TIG welding is most commonly used to weld thin sections of stainless steel and non-ferrous metals such as aluminum and copper. This process is sometimes slower and more difficult, but it gives the welder more control with stronger, longer lasting and higher quality welds.