Tig aluminum

[hosimebag]

Can anyone give me any pointers to start with on tigging aluminum. I normally only tig stainless. I,m using a Miller syncrowave 250 DX. I have a job coming up that needs to be clean and streamlined.

[Brainfarth]

When I was welding on polished aluminum tanker trucks, I had to put out some nice tig welds because they didn't get brushed or painted. Just try to be mechanical about it. Nice even spaced ripples of the same size are what you want without using too much heat. (trying to remember) I think I went by the rule of if it didn't create the right size puddle within 2 or 3 secconds, it wasn't set right. If your unsure of the setting, test it on different aluminum of the same angles you need to weld.
-Mike

[hosimebag]

thanks for the tip and reply

[Mike W]

I find that the hardest part is getting the two pieces of metal flowing together. Once you achieve that you can move right along. Practise on scrap first. :)

[arcdawg]

brain and mike are 100% right, i am very familiar with that machine. it is very good........do you have a PULSE SETTING ? if not you can do a circule circule dip method to keep the consistant.. then make sure your running a green tungston and that the metal is CLEAN the oxide on alumunim melts at 3200* and aluminium itself melts at 1200*

brian

[hosimebag]

Thanks to everyone with their advice. I have to give a big UP's to this site I'll be on almost every night just trying to educate myself