Clean, simple way to strip oxide from aluminum.

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SUMMARY

The discussion centers on effective methods for stripping oxide from aluminum foil to prepare it for spot welding. Participants suggest using 800 grit sandpaper and phosphoric acid as viable options for achieving a clean surface. Both methods are recognized for their effectiveness in removing oxide layers, which is crucial for successful welding. The conversation emphasizes the importance of surface preparation in ensuring high-quality welds.

PREREQUISITES
  • Understanding of aluminum welding techniques
  • Knowledge of surface preparation methods
  • Familiarity with abrasive materials like sandpaper
  • Basic chemistry related to phosphoric acid
NEXT STEPS
  • Research the properties and applications of phosphoric acid in metal treatment
  • Learn about different grades of sandpaper and their uses in surface preparation
  • Explore best practices for spot welding aluminum
  • Investigate alternative chemical treatments for oxide removal
USEFUL FOR

This discussion is beneficial for metal fabricators, welders, and hobbyists involved in aluminum welding, particularly those seeking effective surface preparation techniques.

Mike_In_Plano
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Hello All,

I'm normally over on the electronics forum, but recently I had a problem crop up regarding the spot welding of aluminum foil. I've seen the end results of the process, so I know it can be done cleanly. For that matter, I've seen pieces that predate laser welding, etc, so I'm confident it doesn't involve exotic technologies.

My question is this:

Given that I can process and weld the foil in a glove box, what would be the best ( cleanest / safest ) way to prep the foil for welding ( i.e. strip off oxide and leave a clean surface )

Thanks in advance,

Mike
 
Chemistry news on Phys.org
800 grit sandpaper ?
Or Phosphoric acid
 

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