Can u weld cast aluminum?

Cast aluminum can be repaired in the same way as cast aluminum.

Aluminum is extremely resistant to corrosion but it is soft and easily punctured. These flaws can be fixed in cast aluminum with a torch or an aluminum brazing rod.

The next question is how can you clean weld aluminum cast? These are the steps to follow before welding aluminum.

1. Use a mild alkaline or solvent to remove oil, grease, water vapor.
2. Use a wire brush to remove surface oxides.
3. Assemble the joint.
4. Keep the joint clean.
5. Within a few days, you can be installed.

Just so. Will JB Weld work with cast aluminum?

I'm a professional tig welding expert and I used to work in a local job shop. One thing I hate about is when people bring in aluminum components that they tried to fix. Cast aluminum is porous so the jb-weld will get into the pores making it almost impossible to weld.

Does welding aluminum weaken it?

A weld made from an aluminum alloy alloy is usually weaker than the alloy being welded. Frank G. states that a weld in an aluminum alloy is less strong than the parent material.