Burn-off ovens heat loads to roughly 700 to 900 F in a controlled, low-oxygen chamber so the coating chars and smokes off, with an afterburner destroying the fumes. They keep racks conductive and strip rejects for recoating. The ash left behind is blown or washed off, and thin or heat-treated parts can warp or lose temper, so not every part can go through.
Racks are caked an eighth inch thick, they need a night in the burn-off oven.
Also heard as
- burn-off
- pyrolysis oven
Related terms
Strip
To remove cured powder from a rejected part or rack so it can be recoated.
Racking
The racks, hooks and fixtures that carry parts through the line, and the job of arranging parts on them.
Bad ground
A hook or rack contact too crusted with cured powder to carry charge away, so powder will not stick properly.
Hooks
The wire hangers that hold parts on the conveyor and carry the ground connection.