ARC Welding Aluminum

[woodman]

Tig is best choice-has the best penetration. Mig will work great. We used migs on production line with no problem welding aluminum doors for RV's. Migs have less penetration than tig. Arc can be done, but its tricky. Welded up some guards for some saws without much trouble. I have had better luck welding heavy wall aluminum tube with aluminum stick. Those guards were .125 sheet, and used 5/32 rod and it worked OK. I work in the maintenance field and do some welding almost every day. In my job I have used all 3 methods of welding aluminum. If you can, tig it.
Dennis

[sanddrag]

Originally Posted by woodman

Mig will work great. We used migs on production line with no problem welding aluminum doors for RV's.

Were you using a spool gun? If not, did you make any changes to allow you to feed the aluminum wire?

[woodman]

We used a couple of spool guns in the main weld shop. In the door assembly area we had 4 welders that was "right out of the box". All standard equipment. One of these welders we would change over when needed (aluminum-mild steel) by changing wire and gas. We used same guns and whips.

Originally Posted by sanddrag

Were you using a spool gun? If not, did you make any changes to allow you to feed the aluminum wire?