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

-----

Yellowish stain on metal cabinets after powder coating

Yellowish stain on metal cabinets after powder coating of color whitish gray...It has been the problem for metal cabinets...It always appears on the side part...It's just like a honey being poured on the pancake.. Can you help me to resolve this problem?thank you...

Donald Rey Dia
quality supervisor - Philippines
November 9, 2009

November 11, 2009

Could be overcuring?
But more details needed to answer this question.
What thickness material?
What type powder?
What pretreatment?
What cure time? temp?
thickness of discolouration?

Geoff Crowley
Crithwood Ltd.
Westfield, Scotland, UK

Kind of sounds like the side of the cabinet is in close proximity to a vent as it is curing, if that is the case maybe you could block it and see if it makes a difference.

Sheldon Taylor
supply chain electronics
Wake Forest, North Carolina
November 12, 2009

I have had a similar problem in the past, it turned out to be a oiler for the chain that our parts hang on. it always showed up on the larger parts.

Doug Samson
- Greenwood, SC, USA
November 14, 2009

(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: