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

-----

Process on powdercoating aluminum products

2004

Dear Sir:

I have a question about powdercoat on aluminum. We have 1,000 pieces of aluminum products ,for which we are going to powdercoat them matte black. However they were undertaking chemical reaction when phosphating. As major in steel and stainless steel,we are inexperienced in this field. Could you please give us a few suggestions?

Best Regards,

David Wei
metal fabrication - Xiamen, Fujian, China

2004

Although it is possible to put zinc phosphate on aluminum, it is not possible to iron phosphate aluminum. You have not given us any details, so we have no idea whether there is a minor flaw in your sequence or you are attempting something that is hopeless from the start. It is probably better to chromate the aluminum than to phosphate it.

You need to either retain a consultant or to align yourself with a powder coating supplier and a pretreatment supplier who know what they are doing. Good luck.

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

(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: