Metal inert gas (MIG) welding, is a process upon where a continuous and consumable wire electrode and a shielding gas are fed through a welding gun.
If this is not enough information, there are many great articles about it on the web.
the purpose of gas in mig welding is to provide a protective shield around the weld until it solidifies
MIG stands for metal inert gas. It is a non-standard term for gas metal arc welding (GMAW) and flux cored arc welding (FCAW) according to the American Welding Society (AWS). It is simply Metal Inert Gas.
MIG
It depends on what you're welding and what kind of weld you need. For an extremely strong weld where you don't want to transfer as much heat to the surrounding areas, tig is the way to go. Tig has the option of melting only the source material (together), so if it is better than no material is added, then tig is the better process. If you want a small, uniform weld, then tig is also superior. Mig is wire-feed and so adds material to the pieces being welded. So it is better for filling areas or adding superior strength. If the material surrounding the weld can take the heat or doesn't matter if it is deformed or discolored, then mig welding is the way to go. A good discussion of Tig and Mig welding is here http://www.ridgecrest.ca.us/~biesiade/weld.htm.
Oxy-Acetylene, uses a burning flame to melt the metals being welded. You need a separate filler rod and flux to complete the weld. MIG (Metal Inert Gas), uses electricity in an effective dead short, to heat up and melt the metal. The electricty is passed through a wire which melts and becomes part of the weld. Inert gas surrounds the weld while it cools to prevent oxidation. The whole process is controlled with motors, driving the wire through the tongs, a switch to control the current and a valve to release the inert gas. All held in one convenient pistol grip.
A welding transformer uses the alternating current supplied to the welding shop at a high voltage to produce the low voltage welding power
metal inert gas (MIG) welding
MIG stands for metal inert gas. It is a non-standard term for gas metal arc welding (GMAW) and flux cored arc welding (FCAW) according to the American Welding Society (AWS). It is simply Metal Inert Gas.
metal inert gas (MIG) welding
Oxygen and acetylene for flame welding. Argon for Tig welding CO2 for MIG welding steels Argon for MIG welding aluminum TRI-mix for robotic mig of steels. And helium is added for some overhead welding.
oxygen and acetylene gas Argon gas is used in MIG and TIG welding
When MIG welding STEEL a mixture of Argon -- CO2 is used. 75% - 25%
Gas, arc, mig and tig.
TIG Tungstun Inert Gas & MIG Metal Inert Gas.
Gas Metal Arc Welding Most folks call it MIG
metal inert gas
Flux core is a type of MIG welding.... please kind of know what your talking about before you ask a question.... Gas assisted solid mig wire welding is neater and cleaner. There are two types of flux core mig welding that you are talking about. 1. Gasless flux core mig wire 2. Shielded flux cored welding wire, uses a shielding gas as well. Most likely you are talking about the gasless mig wire. look here for more info: www.learn-how-to-weld.com/gasless-mig-wire.html
It is arc welding process using a spool of wire that is fed to the material by an electric motor. Different from shielded metal arc welding which uses consumable welding electrodes with a covering of flux to assist and protect the weld. The MIG uses an inert gas (IG) to keep impurities from the welding point. The technical term for MIG is GMAW (gas metal arc welding), this is because most of the time an inert gas is not used, a mixed gas is more likely. Ex. 90-10 Ar-CO2