Proper Metal Temperature for Application
What are both the ideal and the maximum surface temperature metal should be when applying powder?
Q. We are powder coating parts made from a mild steel substrate. What are both the ideal and the maximum surface temperature the metal should be when applying powder?— L.M.
A. I would say the preferred temperature is ambient and the normal recommended maximum is around 120°F. Parts that require very heavy film build can be coated at higher temperatures, but remember that higher temperatures will increase smoke and also generate a warm air updraft in the powder booth. Powder will melt at temperatures between 180° and 240°F. If the powder melts, you will not have as much flow during the cure cycle, so the material will have a lot of orange peel and heavy film build. It may also smoke a lot during application. Parts can be coated with fusion bond epoxy (FBE) at very hot temperatures (400°F or higher), but not with any decorative powder.
Powder coating is one of the most durable finishes that can be applied to industrial manufactured products, and offers excellent corrosion protection and is very safe because of its lack of volatile organic compounds.
A review of available test methods, common applications and innovative instrumentation...
Emerging technologies can save energy, ease environmental concerns