Q & A details - Difference between tig &mig welding& how about stainless steel welding?
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Difference between tig &mig welding& how about stainless steel welding?

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Can we use arc welding for stainless steel if so give me the best option, regarding electrodes to be used & M/C specification. 

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  • 0861788249

    0861788249 2017-02-15 09:36:44

    *Stainless steels or, more precisely, corrosion-resisting steels are a family of iron-base alloys having excellent resistance to corrosion. These steels do not rust and strongly resist attack by a great many liquids, gases, and chemicals. Many of the stainless steels have good low-temperature toughness and ductility. Most of them exhibit good strength properties and resistance to scaling at high temperatures. Stainless steels can be welded using several different procedures such as shielded metal arc welding, gas tungsten arc welding, and gas metal arc welding. -Stainless steel welding can be joined by most welding processes. Cleaning of the stainless steel base metal is recommended prior to welding as well as post weld cleaning of parts. Weldability and weld procedure used for stainless steels depends on the base metal crystal structure (martensitic, ferritic, or austenitic). *For certain type of work TIG is required, like welding chrome moly for some racing organizations. Intricate work, like gunsmithing is also well suited to TIG. TIG is used by many auto restorers who prefer a more precise, perfect finish that requires little to no finish work. TIG is most similar to gas welding in technique, so if you've done oxy-fuel welding, TIG should be a natural transition. MIG is required by law and by insurance companies in many localities for structural repair of automotive frames. MIG is also much easier to learn and faster to weld. For doing other types of welding, like sheet metal, it can be a matter of personal preference. For an auto body repair shop or a novice welder, a MIG is a good, practical all-around welder. *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.

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