Can somebody please explain difference between MIG and TIG welding?

Question

Thank you :)

Answer 1

The MIG weld process, or Metal Inert Gas weld, fuses the metal by heating with an arc. With this type of weld, the arc is placed between the filler metal electrode and the work piece. Shielding is provided by outwardly supplied gas or gas mixtures. A TIG weld or Tungsten Inert Gas, on the other hand, functions by joining metals through the process of heating with tungsten electrodes that do not become part of the completed weld. The process utilizes argon or other inert gas mixtures as shielding and filler metals are rarely used.

Some of the basic differences between the two types of welds are that MIG welding is faster than using TIG welding, as utilizing TIG welding requires more skill that MIG welding. A solid wire is used in the MIG Flux Cored Arc Welding-Gas Shield (FCAW-G) while TIG uses a flux cored electrode.

Another obvious difference is that TIG uses Tungsten to carry the arc, and a user of a TIG welder needs to have sufficient experience in the craft of welding. A MIG weld user, meanwhile, can carry on working despite being a novice welder.

Overall, while both MIG and TIG are gas shielded arc welding processes, the primary difference lies in the way the filler metal is added to produce the weld. With the TIG process, the arc is created between a tungsten electrode mounted in a hand-held torch and the work piece to be welded. The welder initiates the arc by means of a switch. The filler metal, in the form of a hand held rod, is then added to the weld puddle by the welder as the torch is manipulated along the joint which is to be welded. The MIG process uses a filler metal which is the electrode and the arc is created when the filler metal comes into contact with the work surface.

Answer 2

Tig Welding Explained

Answer 3

TIG is Tungsten Inert Gas welding or it is also called GTAW (Gas Tungsten Arc Welding). Tungsten (thoriated with 2% thoria addition) is used as the electrode and a filler wire may or may not be used. Thin sections usually don't need filler. Thick sections do. Tungsten inclusions are the exclusive defects (apart from the usual defests such as crater cracks, porosity etc.) with this type of welding process and in radiography appear as light colored sharp objects (remember that tugsten is very dense and so stops x-rays better than steel or copper etc.). While automation is possible, most of TIG welding is done manually.

MIG welding is Metal Inert Gas Welding and uses the filler metal as the electrode. Inert Gas is common in both the processes to prevent oxidation and provide clean welds. MIG welding uses wire electrodes when used with automatic welding machines. Thus higher speeds are possible in MIG welding. With higher speeds and automation, the need for more precise dimensional control and edge preparation, weld gap control etc. become much more important.

Answer 4

MIG welding has a wire electrode that is consumed as the weld is made. (Consumed in this case means that the wire melts and becomes part of the weld.) The electrode has to be made of the same material that's being welded. This type of welding is quick, but it isn't very neat. A large area around the weld tends to get hit with splatter of molten metal.

TIG has an electrode that is not consumed, so the welder has to use a separate filler rod (a wire rod of the same material that's being welded). This type of welding takes a bit more skill and watching a good welder can be like watching an artist work. It makes a very clean, deep weld.

Answer 5

MIG (metal inert gas) and TIG (tungsten inert gas) are both forms of arc welding, in which a high-current electrical arc is used to melt the metal being welded. In TIG, the electrode is a tungsten rod. Tungsten doesn't melt, even in the heat of the welding arc. Filler metal is fed into the weld from a second rod. In MIG welding, the electrode is the filler metal, and is automatically fed into the weld.

An inert gas (argon) is fed over the arc to prevent oxidation of the metal being welded.

Answer 6

MIG welding is done with welding rods or wire filler providing the arc under a gas blanket (gases vary according to materials being joined). TIG uses a tungston electrode (which does not become part of the finished weld) and is done under Argon gas blanket. The filler material is fed into the joint area.

Answer 7

MIG=Adding wire to create your weld. TIG=using no wire but super heat the two peices to fuse or melt them pieces together. Also tig welding is alot slower and more precise than using mig welding.

Answer 8

TIG is Tungsten Inert Gas welding. You use that mostly for leliarc welding. It is used for stainless steel and aluminum. both TIG and MIG use inert gases that flow through a sperate nozzle to shield the weld from the atmosphere. MIG is used more for iron. The gases they use are mostly argon or helium.

Answer 9

tig welding is more like welding with a oxy-acytlean torch a tungsten
electrode as used to strike a arc and the welding rod is held in the arc steam to fill in the area. mig welding is did with a wire that fills the weld and can be done one handed.