Removing powder coating

Keith - Sandblasting is about the only successful method, powdercoating is an exceptionally durable coating.

Cheers, Ron.

Yep as Ron N stated, sand blasting is your best option, but be prepared to pay through the nose, as they do not like sand blasting previous coated powder coating. The company I have worked for in the past has had many items sand blasted that were previous powder coated for the shire council. We found it cheaper to purchase or make new items and supply to the shire, than to blast and re powder coat. The sand blasting causes heat, and the powder coating turns soft and gluee, hence difficult to remove, but achievable. I would look into the cost of purchasing new brackets before removing , grinding, welding, sandblasting and then galvanising and reinstalling. Hope this info is of some value to you

Can you take the brackets off?

you should be able to burn the coating off the brackets.

Hi Keith B2
A Flexovit stripping disc for an angle grinder will remove the powder coating and not remove metal. Did a whole bullbar for a repaint

Many thanks everyone.
The brackets are a proprietary thing and come powder coated. They are holding an aircon unit onto the back of my caravan build and have a bit of slop in the joint, which needs to be got rid of.



Keith

Auschem state they have a coating stripper specifically formulated to remove powder coating. It's called Classique Strip PCD.

Be aware this stuff is potent, it's a product designed for industrial use, and it needs a passivator applied to the metal after stripping.

Auschem - Chemical paint stripping

Powdercoat is essentially a form of plasticised paint, it's paint in a polyester resin form which contains fine metal particles, that are attracted to the metal article being powder coated, by a magnetic field.

So you need a chemical specifically designed to dissolve that polyester resin formulation.
The Classique Strip PCD is a 2-pack epoxy mix with a short life after mixing.

Cheers, Ron.

Spent many years tig welding powder coated race car chassis. Method used was to burn powder coating off area to be welded with an oxy/hot flame, wire brush what remains or if the powder coater had done a good job some times a light sand was required, clean with solvent, do welding repairs, get paid.
Do you really need to galvanise after the repair? Why not just touch up the paint?