JekRankin
|
| posted on 29/4/18 at 12:51 PM |
|
|
Powder coating aluminium without primer?
Dropped off my dashboard for powder coating on Friday. I had the interior panelling done in satin black and am having the dash coated to match.
When I had my interior panels done, I think they were coated with a chromate primer first. The coating adhesion is excellent, and five years later
they still look fresh. There appears to be a thin yellow coating under the black topcoat - I assume this is the chromate.
When I dropped the dash off (same coaters who did the interior panels) - they told me that chromate priming wasn't needed because their powder
was self priming.
Doesn't sound right to me. Can anyone comment on whether that's the case for some powdercoats? I've seen plenty of flaky powder
coating which is presumably the result of poor or insufficient prep and priming, and I really don't fancy having to make my dash again. I would
go to another supplier - but I want to match the finish of the existing panels.
Jek
[Edited on 29/4/18 by JekRankin]
|
|
|
|
|
CosKev3
|
| posted on 29/4/18 at 02:20 PM |
|
|
Pretty sure they don't prime alloy wheels,the surface just needs to be properly keyed/degreased
|
|
|
nick205
|
| posted on 30/4/18 at 11:18 AM |
|
|
Alloy wheels are the only alloy parts I've had powder coated a few years back. They weren't primed, but sand blasted first to clean and
key them. Then an anthracite poweder coating, which still looks good after many miles and washes.
[Edited on 30/4/18 by nick205]
|
|
|
JekRankin
|
| posted on 30/4/18 at 12:43 PM |
|
|
I guess that if it's good enough for wheels, it's good enough for my interior panels!
|
|
|
