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Knowing the right welding equipment to use is essential for achieving a strong joint that’s built to last. TIG and MIG welders both use electricity to heat the metal and a shield of gas to keep impurities out of the weld. However, there are some basic differences that might make either one the better choice for your project.

What Is MIG Welding?

MIG welders use an electrode that sends an electrical current through the metal being joined, creating enough heat to melt the edges. The welding gun continuously feeds a wire of filler material into the pool, which reinforces the joint.

In general, MIG welding is faster and easier than alternative techniques, and it’s capable of producing more heat. This makes it ideal for large-scale projects involving thick materials. However, the joint won’t necessarily be the strongest, and the filler often creates unsightly splatters along the weld. If the aesthetics of the project are important, a MIG-welded joint will usually require finishing and polishing.

Understanding TIG Welding

mig welderTIG welding uses the same basic principles as its counterpart. However, instead of conducting a current through a filler material, TIG welders have a non-consumable tungsten head. The electric arc is created in a cushion of inert gas, usually argon or helium, which keeps out impurities that can weaken the weld. If a filler material is used, the welder has to feed it into the pool by hand.

Because it doesn’t produce as much slag, or metallic waste, TIG welding is much more precise than using a MIG device. However, it’s also slower and more labor-intensive than other alternatives. This makes it ideal for any project where aesthetics are important, or on exceptionally small parts that would be difficult to grind and finish later.


 

Since 1962, Thomas Gas Service has supplied high-quality TIG and MIG welders and welding supplies to businesses and hobbyists throughout Ohio’s Adams, Brown, and Ross counties. They pride themselves on their extensive selection, as well as their competitive pricing and prompt delivery times, ensuring you have the equipment you need when you need it. Visit their website for more on their welding supplies and other services, or call (740) 775-2917 to discuss your needs with a member of their team.

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