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Analysis of Fluorocarbon Coating Technology for Aluminum Panels

Aluminum panels undergo pre-treatment processes such as chromating in the initial processing stage to ensure the strong adhesion of the coating. Subsequently, the fluorocarbon spraying process is employed to further enhance the protective performance of the aluminum panels. The fluorocarbon coating uses polyvinylidene fluoride resin (KANR500) as the main component, which has excellent chemical stability and outstanding aging resistance. Generally, fluorocarbon spraying is divided into two-coat, three-coat, and four-coat processes to meet different decorative needs and weather resistance requirements. The advantages of fluorocarbon coatings include the following points:

  • Corrosion resistance: Fluorocarbon coatings exhibit excellent resistance to acid rain, salt spray, and various air pollutants, significantly extending the service life of aluminum panels.
  • Weather resistance: They effectively withstand temperature fluctuations and strong ultraviolet radiation, allowing aluminum panels to maintain their color and avoid chalking for an extended period, ensuring a long-lasting aesthetic appeal.
  • Adhesion and decorative properties: Through appropriate processing techniques, fluorocarbon coatings not only adhere firmly to the surface of aluminum panels but also offer a wide range of color options to meet personalized decorative needs.

Selection of high-quality fluorocarbon coatings

To ensure the superior performance of the fluorocarbon coating, fluorocarbon coatings produced by internationally renowned brands such as PPG, DNT, AKZO, and NIPPON are used. These coatings offer a variety of color options, and customers can either choose directly from the color samples provided by the manufacturer or provide color samples for customization.

Surface treatment process flow for aluminum panels

The fluorocarbon coating on the surface of the aluminum panel is completed gradually under strict process control. The specific process is as follows:

Detailed steps for surface treatment process flow for aluminum panels

Surface treatment process flow for aluminum panels

  1. Alkaline washing: Initial degreasing and oil removal to eliminate surface grease and improve the effectiveness of subsequent processes.
  2. Pickling: Further removal of residual grease to ensure the aluminum panel surface is clean.
  3. Passivation: Treatment of the surface to enhance the adhesion of the coating.
  4. Washing: Multiple washes to thoroughly clean the surface of residual chemicals, ensuring a clean surface.
  5. Pendant: Fixing the aluminum panel onto the fixture for uniform spraying.
  6. Spraying primer: Coating with primer to enhance adhesion and lay a solid foundation for subsequent topcoat application.
  7. Spraying topcoat and clear coat: Spraying fluorocarbon topcoat and clear coat layers to form a uniform, smooth, and durable protective layer.
Pickling, passivation, and rinsing the aluminum panel with clean water
Pickling, passivation, and clean water degreasing treatment
Place the washed aluminum panel under the hanger to dry
Washed and air-dried
Hang the dried aluminum panels sequentially on the hanger
Pendant
Fluorocarbon Coated Aluminum Panels are placed individually in the machine for automatic spraying
Automatic spraying
Staff are packaging the blue fluorocarbon coated aluminum panels
Packaging

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