I have wanted to experiment with Tig. I have a miller Bobcat 225+. Can I ju st purchase an air cooled TIG torch and a bottle of argon and connect it to my welding leads? I know I would not have voltage adjustment capability an d I would have to use scratch start because of no HF. I am assuming this wo uld work for mild steel or stainless steel.
Would there be a way to use this set up for aluminum?
Scratch start contaminates the electrode. But, it mostly will work, but may require a lot of fussing to keep the electrodes clean enough to weld. Mild steel should be no problem, it is very forgiving. Stainless may be a lot tougher to get good welds.
Generally, you need some kind of AC for Aluminum. Without AC, the surface of the aluminum gets an oxide layer. The best is square-wave AC with continuous HF. I have heard of people welding Al with DC, but I find it tough enough even with the best equipment (Lincoln Square-Wave TIG 300).
Jon
you can buy a high frequency attachment. I sold a bunch of them in the past. They will work.
i
How much are they?
Gunner , I think he was inquiring about the price of one of Iggy's HF units .
I do basic aluminum welding with my Miller 212 all the time. In fact its set up with dual guns and dual tanks so all I have to do is swap guns and adjust the settings for most things. I just welded up a mounting bracket a few minutes ago out of 1/8" 5052 sheet. Its not super pretty, but it won't break.
I'm pretty sure its just a basic DC MIG. Mine is the manual version. Not the auto-set.
just purchase an air cooled TIG torch and a bottle of argon and connect it to my welding leads? I know I would not have voltage adjustment capability and I would have to use scratch start because of no HF. I am assuming this would work for mild steel or stainless steel.
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