Question:What is the difference between Mig & Tig and which one can be used for more projects with out limited use? EG:light or heavy use. Answer: Here are the definitions of Mig and Tig taken from the Hobart Welding 101 Site: MIG (GMAW or Gas Metal Arc Welding)-An arc welding process which joins metals by heating them with an arc. The arc is between a continuously fed filler metal (consumable electrode) and the workpiece. Externally supplied gas or gas mixtures provide shielding. Common MIG welding is also referred to as short circuit transfer. Metal is deposited only when the wire actually touches the work. No metal is transferred across the arc. Another method of MIG welding, spray transfer, moves a stream of tiny molten droplets across the arc from the electrode to the weld puddle. Consumables: contact tips, shielding gas, welding wire. TIG Welding (GTAW or Gas Tungsten Arc)- Often called TIG welding (Tungsten Inert Gas), this welding process joins metals by heating them with a tungsten electrode which should not become part of the completed weld. Filler metal is sometimes used and argon inert gas or inert gas mixtures are used for shielding. Consumables: tungsten electrode, filler metal, shielding gas. As far as duty is concerned, there are ranges of machines for both processes ranging from light to heavy. It really depends on the type of work you want to do and the type of metal you want to weld. You might want to look at the Miller Web Site. It has a great selection grid for machines. Click on these links: Miller Mig Machine Selector Miller Tig Machine Selector I hope this information is helpful. Thanks for asking! Answer Man |
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