The powder coating process starts with a thorough surface preparation of the parts. Products previously painted are sand-blasted or soda-blasted to remove corrosion and all old coatings prior to washing. New products are washed and pre-treated to remove oils and foreign materials.
Once the part is ready, it is electro-statically coated using up to 100,000 kilovolts. The powder is positively charged through the gun and sprayed onto the negatively charged part. The powder actually wraps around the part, cutting down on overspray and waste.
Choosing the right powder coating for its intended application and end-use is very important. Parts for exterior use get a powder prime-coat and a different protective powder top-coat in a two-step process.
Some parts need to be masked to prevent the powder from getting onto sealed faces or threads.
Once the parts are coated, they go into the oven, where the powder melts and fuses into a continuous hard, durable finish.
After heat-treating at the proper temperature and time, the parts are cooled and repackaged to the customer's specifications.
Powders come in several chemistries, including:
Epoxy
Polyester
Urethane
And, Specialty Coatings like:
Nylon
Teflon
A very large selection of colors are, also, available to choose from - including:
