No passwords, No popups, No AI, No cost:
we earn from affiliate purchases

Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Adver-
tise
Help
Wanted
Current
Q&A's
Site 🔍
Search
ted_yosem
Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
finishing.com -- The Home Page of the Finishing Industry

  The authoritative public forum
  for Metal Finishing since 1989
  mfhotline


  -----

Pitting Problem in Wood's Nickel Strike




Hi I am a metal finisher out of Houston Texas. We do decorative plating on a variety of different base metals. We generally put acid copper over the parts then buff the parts. Then we generally put sulfamate bright nickel then to gold. My problem lies with my nickel strike tank. If a part is cut through to the base nickel plate or if it is made of stainless we nickel strike the part.

Lately we have been getting pits when we go through the nickel strike. I've dummied the tank and I feel that the copper has been drawn out of the bath so I have ruled out that problem. I've also been carbon treating the tank to pull out any organics. Nothing is seeming to work - Is there anyone out there who has experienced the same problem ? Please help!

Erik MacKenna
- Houston,Texas
2000



My guess is iron contamination. A little iron goes a very long way as ferric chloride this on eBay or Amazon [affil links] /HCl etchant. I would do a lab test before and after a lab treatment with peroxide or permanganate (high pH) treatment to see if that is your problem.

Carbon does not pull out all organics. Frequently a peroxide treatment is necessary to make it amenable for carbon treatment.

James Watts
- Navarre, Florida
2000




(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:

Finishing
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g,
& Software


About/Contact  -  Privacy Policy  -  ©1995-2024 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"