Aloha, fun & authoritative answers -- no cost, no registration, no passwords, no popups
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Where the
world gathers for metal finishing
Q&As since 1989

-----

Pinholes and craters in E-coating of Nickel plated brass

December 1, 2010

We are having problems electrocoating plated nickel parts. The polished nickel and polished gold parts seem to be covered with pinholes and craters. We are not seeing this on any of our other surfaces. Our satin finished parts never give us any trouble maybe because of the surface? It does not happen all the time on all of the parts. We have tried several different things with no real solutions. We are in the faucet business and our parts very in shape and size.

I would appreciate any advice!
Thanks!

Joe Myers
Plating Shop - Lanark Illinois USA

Check sample parts with a 40 power scope after each step to find the offending step. It could be any of them. The first guess is that you are not getting all of the polish off in the cleaning steps.
If it is one of the solutions that is offending, contact your vendor tech services for help. If you are not using proprietary solutions, good luck.

James Watts
- Navarre, Florida
December 3, 2010

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: