Dry-off ovens typically run around 250 to 350 F and must leave parts fully dry, including inside tubes, seams and blind holes. Trapped water boils out later in the cure oven and blows craters or blisters through the film. Parts usually need to cool after dry-off too, because powder sprayed on a hot part starts to melt early and builds unevenly.
Tubing's still dripping out of the dry-off, slow the line or add some blow-off before it.
Also heard as
- dry-off
- drying oven
Related terms
Wash
Line slang for the spray pretreatment washer, or for the pass a part makes through it.
Blow-off
Blasts of compressed air used to clear water from pockets or dust from parts before they are coated.
Flash rust
A thin orange rust bloom that forms within minutes on wet, freshly cleaned steel.
Outgassing
Gas escaping from a porous substrate during cure and blowing pinholes, bubbles or craters through the film.