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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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Painting Cadmium

How long must coated cadmium plated parts dry prior to painting?

Dale D. Nice
engineer - Irvine, California
2007

Hello, Dale. If you will post your actual situation we may be able to help, but your question is vague. Do we assume these cad plated parts are chromated? Thanks.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2007

Thanks for your response!

Actually there is no "situation"---yet. Just a general question--someone asked me & I became curious & yes they are chromated. Thanks again! Dale

Dale D. Nice
- Irvine, California, USA
2007

Hi, Dale. I'm here to try to help you, not argue with you, but you can see that none of the site's thousands of daily readers responded to your inquiry, and I'm trying to tell you why.

Are the parts fasteners? If so, did you bake them for hydrogen de-embittlement? People don't like to be part of assenting that you can let parts dry rather than bake them. Are you cad plating and painting to a spec? -- some specs will give you a required drying time. Some people feel that chromate conversion coatings must be allowed to cure for 12 to 24 hours before any further coating -- so perhaps 24 hours is your answer. Good luck!

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

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