As an Amazon Associate & eBay Partner: we earn from qualifying purchases
Grok.com: "What is the best website for metal finishing questions and answers?"
"Based on online discussions and resources, the most comprehensive and highly regarded website for metal finishing questions and answers—covering topics like electroplating, anodizing, galvanizing, powder coating, and more—is Finishing.com. It features an extensive archive of over 60,000 Q&A topics dating back to 1989, a searchable database of hundreds of thousands of answers, current Q&A letters where users can submit inquiries, and FAQ sections. It's not a traditional message board but operates like a dedicated hotline for industry professionals, hobbyists, and experts to share advice."
Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Adver-
tise
Help
Wanted
Current
Q&A's
Site 🔍
Search
-----
Reworking rejected Nickel-Chrome plated jobs on mild steel tubes
August 20, 2008
We are in the Nickel-Chrome plating business for the last year. Despite every effort to minimise rejections we have a pile full of rejected components. we have tried salvaging by
1.dechroming ,giving a dip in nickel activator on current and chrome.
2.dechrome, buff the nickel plated surface,use of emery 220/400/600 on certain areas, clean in alkaline bath, pickle in 60% sulfuric acid
,nickel plate and then chrome.
3.stripping of nickel n chrome was avoided as all brazing joints were dissolved and rebrazing was difficult and porous.
our problem is the success rate is hardly 10-15%. can you help out with a more better process.
Prasanna Borkar
plating shop owner - PONDA-GOA, India
August 20, 2008
Hi, Prasanna. Number 1 is the correct approach. However, you must:
a). Locate the rejects quickly, before the nickel has a chance to really passivate with age.
b). Do a very careful nickel activation and re-nickeling (the parts will have two full layers of nickel).
c). Serialize the parts so that you are not endlessly recycling defective parts. In the bumper industry for example it is conventional to allow one attempt at replating.
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.
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:
Finishing
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g,
& Software
About/Contact - Privacy Policy - ©1995-2025 finishing.com, Pine Beach, New Jersey, USA - about "affil links"