No passwords, no registration, no paywalls, no popups, no AI

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

-----

Chromic Acid Anodizing Substitute

2006

Currently, chromic acid anodizing is utilized for aerospace applications in Turkey. We want to substitute it with a non-chrome process.(for environmental regulations, since the negotiations for access to EU began). When we change to another process, do we have to also change the process line including sealing, rinsing or vapor degreasing solvent?
Thank you very much.
Best regards,

Gulsum Ozden
Aerospace - Turkey

Probably not the number of tanks, but you are going to have all kinds of fun getting the chromic out of the tanks, clean enough to reuse them. I would look into using the boric/sulfuric process. That is a proprietary method of Boeing. Your seal will need to change also to comply with the EU. If nickel is a no-no, look at cobalt.

James Watts
- Navarre, Florida
2006

Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.

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: