Welding Aluminum With Dc Tig. DC GTAW can work very well on aluminum so dont be afraid to try it. The argon cools the TIG torch shields the tungsten and stabilizes the arc.
Learning to TIG aluminum. Focus on cleaning your metal properly using your foot pedal and keeping a close eye on the weld puddle. Aluminium is much more difficult because the material is surrounded by an oxide layer.
So you can get the best result by achieving quality welding for aluminum.
A TIG welder basically comes with both AC and DC power options. Doing so will give you burn-throughs and result in weak or ugly welds. Its designed primarily for oxy-fuel welding aluminum but TIG. If you had DC TIG however and wanted to make it weld aluminum though and could access the back side of the joint for mechanically removing flux in addition to the front which since youre able to strike an arc you should likely be able to access well enough for flux removal look into using a stick welding electrode with the flux covering it for the DC TIG process with should allow much better heat control and less oxidation so you flux will stay cleaner than stick welding aluminum.