How to tig weld aluminum with dc with pictures
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However, this technique is recommended more for thicker workpieces due to the greater depth of penetration. The shielding is added through a compressed bottle that provides gas flow to the weld area. Meaning, welding a base material that is 12.5mm or 1/8 thick would need 125 amps.
Dc is not ideal for welding aluminum, and instead, an ac current should be used.
When tig welding aluminum, make sure that all oxide compounds are burned away, and the weld spot is perfectly shiny before introducing filler wire to prevent contamination. Meaning, welding a base material that is 12.5mm or 1/8 thick would need 125 amps. 4043 works best and produces a clean bead. This weekly video is about tig welding aluminum using dc.