Welding Tips and Tricks

Hey. First time poster. Hope this is the correct area for this sort of question.

So I am new at tig welding. I am welding an interior corner joint of two pieces of 3/8" aluminum. I'm using a 1/8" pure tungsten electrode set at 200-220 and using 1/8" aluminum filler rod. The issue I'm having is that when I go to apply the filler rod to the substrate it gets melted away with a strange green haze/aura. not sure what to make of it. I't affecting the process.

It may be contamination related. Possibly from the pure tungsten but could also be low gas flow or dirty metal. I would not weld in a corner on 3/8 without an alloy tungsten. My preference would be thoriated but lanthanated would be o.k. too. Cerriated would help but not as much as thoriated.

Do you have anodized aluminum?

Oscar wrote:Do you have anodized aluminum?

He's got 2 threads going.. The other one has pictures.. Doesn't look anodized.

sschefer wrote:

Oscar wrote:Do you have anodized aluminum?

He's got 2 threads going.. The other one has pictures.. Doesn't look anodized.

Yup, just saw that, lol.