Quote:
Originally Posted by hiwayman
Rodger would it be possible to detail the welding? the heat setting , pulse or no pulse , foot controller , tungsten size , hey thanks Darrin
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I'm gonna guess your meaning sheetmetal.
I find as a starting point you set you welder for every .001 material thickness with steel you run one amp. So .065 steel is set at 65 amps or .125 steel is 125 amps. This is just a base line for the amperage you can adjust with your with your pedal. So guys foot pulse the weld, so they will do 7 pumps and weld about 3/4 to 1 inch and cool it off with water or compressed air. Tungsten size really doesn't matter a bunch on thinner stuff but a small tungsten will carry a lower voltage a bit more stable and a big tungsten will carry a larger amp load for thicker material.
All of the settings and tungsten doesn't mean a thing if you can't cut and fit the sheetmetal tightly. If the gap is bigger it will require you to adjust everything and put alot more heat into the panel which will mean that it is more distorted then it should or could be. You have to do everything to minimize your heat. Put the least amount of heat into the panel means the less your gonna have to fix with a hammer and dolly or shrinking wheel or a rose bud.
When I bring a new guy in only let the guy tack parts together for a few weeks until I know he can control his heat. If he has to do these big ass tacks that have huge heat affected zones he is not going to be welding just yet.
Tig welding is all about fit up for all material thickness's. Fit up, Fit up, Fit up.