This oven is used for curing of powder coating freshly done on the oven. During the curing process (in the oven) a chemical cross-linking reaction is triggered at the curing temperature and it is this chemical reaction which gives the powder coating many of its desirable properties.
The powder coating process involves three basic steps: part preparation or the pre-treatment, the powder application, ands .
Powder coating is based on the principle that objects with opposite electric charges (positive and negative) attract one another. Powder particles are negatively charged by passing them through a special spraying gun. This results in an electric field between the spray gun and the earthed component.
7 Tank Process for Powder Coating on Metal is a seven steps process. These are steps which include Degrease, Rinse, Pickling, Rinse, Phosphating, Rinse, and Passivation.
After the parts are coated with powder, it is crucial to bake them within a proper temperature range. This cure process requires a certain temperature for a certain length of time in order to reach full cure and establish the full film. The powders cure at 300°F to 400°F for 10 – 15 minutes at part temperature.
The curing process for powder coating is normally done in a special oven; the coating has to be exposed to a temperature range of 350 to 400 degrees Fahrenheit (160 to 210 degrees Celsius) for 20 minutes.
