I am trying to weld some aluminum that I think is braze sheet. It is .062" thick and I think it 3003 since it bends pretty easy. It does not seem to weld very easy. Do you need to remove the braze coating with a torch first or can you just weld it up as is? I am using a Dynasty 200DX with 1/16 2% lanthanated tungsten. Thanks in advance for any advice.
I am trying to figure out what the hell you are talking about.
Some aluminum has an anodized coating that must be removed before WELDING or BRAZING.
3003 is a soft aluminum that is weldable.Why would you be "brazing" aluminum with a TIG welder?
Your tungsten is fine for "welding" the aluminum. Machine settings for welding would be AC, about 60 amps.
Are you talking about the plastic protective coating ? That should be stripped off since it is non-conductive and would burn.
My experience was AL sheeting was covered to remain shinny, then cut with saws, then removal of the cover. Perhaps now it isn't a paper based, just a jell or plastic based cover.
??
Martin
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