The key to successful powder coating is cleaning and preparation. Finishing.com states that when powder coating fails, it is often because of improper prep work. The powder coating process utilizes dry paint and heat to develop a coating that looks professional and provides an armor-like protection. In order for powder coating to work effectively, the metal must first be free of dirt, grease, oil and rust. An unclean surface will hinder the bonding of the paint to the metal.
Remove the rims from the vehicle and the rubber tires from the rims. This will give you access to all surface areas when cleaning. Removal process will depend on the vehicle and rim style.
Examine the rims for dents or rusting. The rims must be in good shape for powder coating to work. If rims show signs of damage, take them to a professional for proper prep. If the rims are new and in good shape, then cleaning will be enough to prepare the surface for powder coating.
Rinse the rims with a garden hose or car wash sprayer. This is to remove any lose dirt. Do one side at a time to guarantee you hit all surface areas.
Wash the metal surface of the rim with a detergent and scrub brush. Select a soap that works on metal surfaces. When selecting the detergent, read the label to ensure it states it is effective on metal surfaces. Follow the direction with the cleaning product for proper use. Some will require diluting with water, while others apply directly to the metal. Scrub all areas of the rim with the soap and brush.
Run water over the rims to remove soap residue, and then apply a degreaser and oil remover, following the directions provided with the product. Let the cleaner sit on the metal surface for several minutes to penetrate through grease and oil before rinsing.
Look over the rims for any spaces or crevices that may still be dirty. Repeat the cleaning process if necessary. Once rims are clean, follow the prep instructions for the powder coating.
