Aloha, fun & authoritative answers -- no cost, no registration, no passwords, no popups
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Where the
world gathers for metal finishing
Q&As since 1989

-----

Effect of hard anodized coating to the furnace

Our company has been approached to do solution treatment and precipitation hardening on 7075 aluminium. These part has been hard anodized. They want to do the heat treatment without stripping the coating. I'm worried about the effect of the coating to our furnace and quenching. Can it be contaminated. Do you think it possible?

Thanks for the help.

Regards,

Zuraida Mohamed
- Selangor, Malaysia
2002

I don't know the temperatures involved in those heat treatments, and I suspect they may have adverse effect on the anodized coating--namely causing it to craze. An anodized coating, per se, is just aluminum oxide; there should be nothing volatile in it. If it has some special dyeing, or perhaps a teflon impregnated sealing, I suppose it is not impossible that they could effect you equipment depending on the actual processes.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2002

(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: