Powder Coating

A harder finish. Less waste. Zero VOC emissions.

Powder coating has become the preferred finishing method for a wide range of industrial applications – and for good reason. At Raphael Industries, we apply powder coatings to manufactured parts and components at both our West Allis and Lomira facilities, backed by the same ISO 9001:2015 certified processes and family-owned flexibility that our customers have relied on since 1987.

If you’re looking for a durable, consistent, and environmentally sound finish for your parts, powder coating deserves a close look.

What is Powder Coating

Dry powder. Electrostatic application. Oven-cured durability.

Powder coating is a finishing process in which a dry powder – typically made from a blend of resin, pigment, and curing agents – is applied to a metal part using an electrostatic spray gun. The gun gives the powder particles a negative charge, which causes them to adhere uniformly to the grounded metal surface. The coated part is then passed through an industrial curing oven, where heat causes the powder to melt, flow, and cure into a smooth, durable film.

The result is a finish that is harder, thicker, and more resistant to chipping, scratching, and corrosion than most liquid paint systems. And because powder coating contains no solvents, it produces zero VOC emissions during the application and cure process – making it one of the most environmentally sound industrial finishing options available.

Powder coatings are supplied ready to use, with no mixing, thinning, or viscosity adjustment required. That consistency translates directly into a more repeatable, controllable finish run after run.

Our Powder Coating Process

Getting a powder coating to perform starts well before the powder is applied. Surface preparation is the foundation of any durable finish, and we don’t cut corners on it.

1. Part Review & Coating Selection We review your part geometry, substrate, finish specification, and end-use environment to select the right powder formulation – whether that’s a standard polyester, an epoxy primer system, or a specialty finish.
2. Surface Preparation Parts are cleaned and pretreated to remove oils, scale, oxidation, and any contamination that would compromise adhesion. A properly prepared surface is the single biggest factor in long-term coating performance.
3. Electrostatic Application Dry powder is applied using electrostatic spray equipment, producing a uniform coating that wraps around edges and contours consistently – including areas that can be difficult to coat evenly with liquid systems.
4. Oven Cure Parts are conveyed through our industrial curing oven at controlled temperatures, where the powder melts and flows into a continuous, hard film. Once cooled, parts are ready to handle, assemble, or ship – no extended drying time required.
5. Inspection & Packaging Every run is inspected for coverage, film build, and appearance before parts leave our facility. Our ISO 9001:2015 certified quality system ensures the process is documented and consistent across every order.

Available Finishes

Powder coating offers more variety than many customers expect. We can apply finishes across a wide range of colors, gloss levels, and textures, including:

• Gloss, semi-gloss, satin, and matte finishes
• Smooth and textured surfaces
• Metallic and hammered effects
• Custom color matching to customer-supplied specifications