No passwords, no registration, no paywalls, no popups

As an Amazon Associate & eBay Partner we earn from affil links

finishing.com -- The Home Page of the Finishing Industry

Search our quarter-million Q&As

Home of the finishing HOTLINE since 1989

-----

BROWNING ON DECORATIVE CHROME PARTS

As of the past several months back we have been experiencing a brown film after chroming process on nickel plated parts. Large pieces such as bumpers turn out fine but smaller parts such as moldings, auto and motorcycle parts, nuts and bolts, etc. do not. The film is almost like a paint like looking coating layer. Note: It is not a nickel spot. It's an 1,100 gal. hexavalent chrome tank. Any input would be appreciated we are at our wits end.

Sharri Neel
chrome plating shop - Yuba City, California, USA
2003

"Chromium Plating"
by Weiner & Walmsley
chrome_weiner_rare

on Amazon (rarely)
or eBay (rarely)
or AbeBooks (rarely)
(affil link)

First of two simultaneous responses --

Check your ratio between hex chrome and sulphate. Remember to subtract fe, cu, and Tri valent chrome.

Chris Snyder
plater - Charlotte, North Carolina
2003

Second of two simultaneous responses --

I think you have a problem of LCD. Check point 1. Rate of chromic acid and sulfuric acid 2. Auxiliary anode

SE DO JANG
- Korea
2003

Sorry! Finishing.com is temporarily Read-Only.
Please maintain your bookmarks! Although Ted Mooney is retiring, finishing.com is not!
It will have a new owner/curator very shortly!

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: