47085

Chroming Defects [Malaysia] 

November 19, 2007

I'm an ISO Coordinator in this company the producing knitting parts. I am handling quality improvement program at which currently working to reduce the defects in chroming process.

We're having a problem that is called white head - white color appears at the top of the part after chroming.For me I believe it would not come from the setting of the parts in the chroming clamps or jigs. It may be caused by the setting of Voltage/Ampere/Chroming time.
What do you think it the cause of this white color?

Uzaimi Musa
ISO Coordinator - Klang, Selangor, Malaysia

Hi, Uzaimi. You call it "white head", but others might call it whitewash, or burning, or something else. We just don't have enough to go on. Is this a hard chroming process? Have you successfully plated them in the past? Can you send a picture?

Ted Mooney, P.E.  finishing.com Brick, New Jersey

Plz reduce ur bath temp. & maintain it upto 56 - 60*c. reduce the current & increase the time in appropriate retio.
Yudhbeer Singh & Kuldeep

Kuldeep Singh
- Pantnagr , Uttrakhand (INDIA)

How many mg copper per 1000 amp/hr emission?

POPAT PATEL
- Roseville, MI

Hi , if the parts are bright nickel , them flash chrome for a decorative finish , then the white marks could be caused by a break of contact of power during the flash chrome cycle , or burnt , or even because the chrome is too cold .

If the parts are hard chrome plated , you can sometimes get the white marks due to poor jigging contact - too much heat being generated at the point where the jig and component meet .

J Smith
- Essex, England