finishing.com -- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

HomeFAQsSuggested
Books
Help
Wanteds
Advertise
on this site
FORUM
(current
topics)
topic 1598

Chrome Remover and Nickel Activator recipes?


(1998)

Asking around about chrome removers and nickel activator for use in gold plating preps has shown that sodium hydroxide is used for the remover and sodium bisulphate for the activator, both of which I have lots of in dry form. My question is, what kind of %wt concentration is good for making these solutions?

Thanks,
Danny

Danny Miller


(1998)

I'm not sure if you heard accurately. Sodium hydroxide is used to electrolytically strip chromium, it is not an immersion process. The proper formulation and operating conditions can be found in the "Stripping Metallic Coatings" chapter of the Metal Finishing Guidebook. A sodium bisulphate acid salt MIGHT properly activate nickel, but I think you'd be better off buying a commercial proprietary nickel activator or a combination activator-strike solution.

P.S.: If you are not a trained professional plater, operating from suitable facilities, you need to think seriously about how you are going to dispose of that stripping solution and the hexavalent chromium it contains.

Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey




This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView CURRENT TOPICS

Disclaimer: It's not possible to 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 may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2017 finishing.com     -    Privacy Policy
How Google uses data when you visit this site.