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Stripper for acid copper plate off of zinc die castings

Can you suggest a stripper that will do the job without attacking the zinc diecast base?

Les Gonsalves
Plating chemical supplier - Chicago, Illinois
April 23, 2010

May 4, 2010

Hi

Try concentrated Nitric Acid, take care of fumes!

regards

Keshava Prasad M
- Chennai, India

Pure - no water- nitric will strip off of steel, but I think that it will rapidly attack zinc. Try it on a part before you get carried away with it. Commercial nitric has too much water in it. Go for the fed fuming nitric.

James Watts
- Navarre, Florida
May 5, 2010

May 7, 2010

Macdermid offered a process based on polysulfide many years back. If they are not available try "liver of sulfur" followed by a cyanide dip to remove the smut.
If you must resort to this be very careful.

Geoffrey Whitelaw
- Port Melbourne, Australia

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