My aluminum ladle is cracked now and needs to be welded firmly. How to weld with argon arc welding machine

The aluminum ladle you use is raw aluminum ~ containing more other metals or impurities! After years of use, the surface oxide layer is very thick! This is even worse for welding! First remove the oxide layer on the surface, then clean the welding place with alkaline solvent, then rinse it with clear water to dry it, and then use argon to protect the welding place from low current welding! Wire can't be used as welding wire, but aluminum-magnesium or aluminum-silicon welding wire ~ generally speaking, this will not be a problem ~