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"PROBLEMS WITH CHROME ON REJECTED PIECE, APPEARS A WHITE PATCH"



2005

I have a piece that was rejected, I have tried all doing the procces all over again, but there is some white patches and I don't know how to handle with it. I hope if anyone that face this problem before can help me.

Thanks.

DANIEL HERNANDEZ GUERRA
PLATING JOB SHOP - BUCARAMANGA, SANTANDER COLOMBIA
^


2005

It is difficult to troubleshoot based on a verbal description of the problem and with no data provided. A photograph, however, may reveal the difficulty enough that someone will be able to say "it looks like whitewash, which is sometimes caused by . . ." or "it looks like a salt stain; do you have a final DI rinse?", etc.

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


2005

A wild guess is that your amperage for the temperature and chrome concentration was either too high or too low. It only works well in the middle.
Recheck your operating parameters.

James Watts
- Navarre, Florida
^


2005

Could be temperature, but also current intensity or anodes contact. Also depends if it is a fluoride bath or not. Could have some catalyst + or -. You should check everything however.

Dan L. Rujan
- Arad, Romania
^


2005

Sounds like a passivation problem.unactivated nickel goes white.after acctivation only acidic or neutral rinse ,acid dip,then rinse,chrome.

Dave Coleman
- fnq Aus
^

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