The Alloy Wheel Powder Coating Process

Alloy wheel powder coating is a high-quality, durable finishing process that enhances the appearance and longevity of your wheels. This method provides superior protection against corrosion, scratches, and weather damage while delivering a flawless, professional finish. Here, are the nine steps carried out, step by step, to explain how wheels are transformed.

Step 1: Wheel Inspection and Preparation

The first stage of the alloy wheel powder coating process involves thoroughly inspecting the wheels for any damage, such as cracks, bends, or deep corrosion. If necessary, repairs are carried out to ensure the wheel is structurally sound before proceeding with the coating.

Once inspected, the wheels are stripped of any old paint, lacquer, or previous coatings using a chemical dipping process. This step ensures that the powder coating adheres properly to the bare metal, providing a long-lasting finish.

Step 2: Shot Blasting for Surface Preparation

After the chemical stripping, the wheels undergo shot blasting. This technique involves blasting the wheel surface with fine media, such as aluminium oxide or steel grit, to remove any remaining contaminants and create a rough texture that helps the powder coating bond effectively. Shot blasting also enhances the durability of the final finish by improving adhesion.

Step 3: Cleaning and Pre-Treatment

Once the surface preparation is complete, the wheels are thoroughly cleaned to remove any dust, grease, or residual debris. A pre-treatment process is then applied, usually in the form of a phosphate or chromate conversion coating, to further enhance corrosion resistance.

Step 4: Powder Coating Application

With the wheels fully prepped, the actual alloy wheel powder coating process begins. The wheels are placed in a controlled environment where an electrostatically charged powder is applied. This powder is made of finely ground particles of pigment and resin, which are attracted to the metal surface due to their opposite electrical charges.

This electrostatic application ensures even coverage, preventing drips or streaks that can occur with traditional liquid paint. The powder adheres uniformly, providing a smooth and consistent layer ready for curing.

Step 5: Curing in an Oven

Once the powder has been applied, the wheels are transferred to an industrial oven, where they are heated to approximately 180-200°C (356-392°F). This curing process melts the powder, allowing it to flow and bond with the metal surface. As the wheels cool, the coating hardens into a durable, resilient finish that is resistant to chips, scratches, and environmental damage.

Step 6: Optional Colour or Customisation

At this stage, additional layers can be applied for those seeking a unique finish. Custom colours, effects such as metallic flakes, or a two-tone design can be incorporated before applying a final clear coat for added depth and protection.

Step 7: Final Clear Coat Application

A clear coat is applied to provide a high-gloss or matte finish, depending on the desired look. This final protective layer enhances the colour depth, adds an extra level of scratch resistance, and ensures long-term durability against road debris and harsh weather conditions.

Step 8: Cooling and Quality Inspection

Once the curing and finishing touches are complete, the wheels are allowed to cool before undergoing a detailed inspection. Each wheel is checked for defects, uniformity, and coating thickness to ensure the highest standards of quality are met.

Step 9: Reinstallation and Balancing

Finally, the newly coated wheels are refitted onto the vehicle. To maintain optimum performance, the wheels are balanced to prevent vibrations and ensure smooth driving.

Why Choose Alloy Wheel Powder Coating?

Alloy wheel powder coating is a preferred choice due to its durability, aesthetic appeal, and resistance to harsh environmental factors. Unlike traditional paint, powder coating does not chip or peel easily, making it an ideal solution for those looking to restore or customise their alloy wheels.

If you’re looking for professional alloy wheel powder coating equipment, contact us today.

Call Brian on 07792 948 826 or
Call Scott on 07939 512 251