How To Tig Weld Aluminum Square Tubing. The melting point of the oxide skin that forms on the surface is 3200 F 1700 C. But as it heats up you back off to much less than that.
And a flare bevel joint where square tubing intersects each other on the rolled edge. I think Im getting the hand of tig welding aluminum. Aluminums high thermal conductivity means that the weld pool is larger than it is in steel.
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You can weld aluminum pipe joints using an open-root technique but its more difficult to do than it is with steel. Tig Brazing is when you use a filler rod that melts at a. Using a 90 degree countersink in a mill is a lovely way to do it but a belt sander or handheld grinder will work also. There are certain properties that aluminum has that make it extremely hard for TIG welding.