Cook
Cook turns up in 2 fields: thermal spray, powder coating. Here is what it means to the people in each one.
Cook in thermal spray
Booth slang for overheating a part during spraying, usually from slow traverse, short standoff or no pauses.
To let the substrate or coating get too hot while spraying, by holding the gun too close, moving too slowly, spraying too many passes without breaks or turning off cooling air. A cooked part shows heat tint, high residual stress, cracking or delamination, and on aluminum, titanium or heat-treated steel it can lose strength. Thin walls and small parts cook fastest.
"You're going to cook that thin sleeve, give it thirty seconds between passes and get the air on it."
Cook in powder coating
Line slang for curing parts in the oven, and in the past tense, for parts that got too much heat.
Sprayers talk about cooking a load the way cooks talk about a roast: how long it cooks, at what temperature, and whether it came out right. Cooked or fried on its own usually means overbaked, with yellowed whites and brittle film. Undercooked means the opposite, a film that fails the rub test.
"Those white panels sat in there through lunch, they're cooked, look how yellow the edges are."