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
-----
BLACK OXIDE SET-UP
adv.
I was told to set-up a Black oxide line with no specification or the amount of tanks and rinse tanks needed. The type of material suitable for the chemical. Can any specialist help me out. Must the black oxide be every time comes out black after plating process or is it blue-black.
Thank you,
Tessensohn Albert
- Singapore
It'll come out black unless the substrate is highly polished, in which case it will be blue-black.
But real black oxide operates at about 290 °F, which means when water is added to make good the evaporation losses it can instantly flash to steam and cause the tank to blow boiling hot caustic soda ⇦liquid caustic soda in bulk on
Amazon [affil link]
over everyone if it's not done right. You shouldn't design this yourself; get a professionally designed black oxide tank or use a proprietary room temperature blackening solution. Talk to
Heatbath or EPI / Electrochemical Products Inc. [a finishing.com supporting advertiser].

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"