What are the welding processes not recommended for aluminium?

There are many welding techniques that are recommended for welding aluminum. Any welding technique where flux is used, like flux cored arc welding, submerged arc welding or SAW & stick welding are not effective for aluminum

Aluminium can be welded easily, but first & foremost, the right welding technique, shielding gases & specifications should be selected. Otherwise, you may face some major & unexpected challenges.