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What testing to do for zinc plating

I am doing Zinc plating on Zinc alloy (Zamak-5) what type test I have to do for process validation. Current plating process is - Acid cleaning-Plating-blue passivation-Lacquering.

Valsaraj Plalakkayil
I am QA person getting plating from supplier - Pune, Maharashtra, India
September 20, 2009

Hi, Valseraj. As a minimum, you'll want to do some sort of adhesion test, a thickness test, and salt spray testing for corrosion resistance -- because these are the minimum requirements for plating, i.e., that it adhere to the parts, be of proper dimension, and resist corrosion.

It can be a good idea to plate to some spec even if your customer doesn't require it because the spec will usually give hints if not rules for testing. Good luck.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Ted is available for instant help
or longer-term assistance.
September 21, 2009

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