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

-----

Powder coating won't stick to clear chromated zinc plating

I am looking for a electrically conductive plating to use over sheet steel that is also a good base for powder coat painting. We have had paint peeling problems when using zinc plate with clear chromate. Any suggestions will be appreciated.

Rich Alfieri
1996

Hi, Rich. I was involved in the refurbishment of Philadelphia's "William Penn" city hall tower. We tin-zinc plated, electrolytically chromated, and painted the steel; and we fully intend for it to last 100 years. So good adhesion of paint onto a chromate film is not an insurmountable problem, but it does require careful, very thin, chromating. 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: