Brown spots on powder coated brass substrate
Brown spots on powder coated brass substrate
(OP)
We are having an issue where polyester powder coated brass samples are developing brown spots (almost certainly corrosion) after being powder coated and sitting for a while. The technicians claim they do not see this phenomenon during salt spray and humidity testing. Pinholes? Contamination?
I appreciate any feedback. Thanks.
I appreciate any feedback. Thanks.





RE: Brown spots on powder coated brass substrate
RE: Brown spots on powder coated brass substrate
RE: Brown spots on powder coated brass substrate
RE: Brown spots on powder coated brass substrate
RE: Brown spots on powder coated brass substrate
Take a serious look at your cleaning and rinsing process. Also look at how the parts are stored between the cleaning process and the painting process. Contaminants can redeposit from the air and you'll never seem them until they "pop".
RE: Brown spots on powder coated brass substrate