Metal finishing Q&As since 1989
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Powder Coat Paint issues
Q. Any chance you have an idea on the root cause pertaining to the attached pics. These are aluminum parts (K-Alloy) that are originally Powder Painted with PA006QF 20-1028HY Wet White.
They are then re-painted with 243QF 22-7001 Tuxedo Black.
Powder Coat supplier is Akzonobel if that helps.
Bill V.- Nesconset, New York
April 16, 2024
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A. Hi Bill.
Sorry, I don't have enough experience with powder coating to know what went wrong, but I do have some questions ...
1. Are you speaking of a rework to make white parts black, or are you speaking of a two-coat system where he first coat is partially cured before applying the second coat? If that is the case, how could the illustrated parts be accepted to go on to the second coat with powder missing -- or is that not the case?
2. What is the pretreatment for the aluminum? Any chance a solvent is causing those fisheyes?
Luck & Regards,
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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