Steel pre-treatment and galvanisation play an irreplaceable role in the whole coating process. Its quality determines how perfectly the hardened powder adheres to the surface. It is special cleaning of the surface of a piece to be coated. It is conditional on material being perfectly cleaned, degreased and dry.
- Phosphating spray. This is done with a ferric phosphate in a degreasing booth at a temperature of 60°C. It creates a protective anti-corrosion layer, sufficient for quality pre-treatment, and significantly limits possible expansion of corrosion under the coating.
- Rinsing with water at 60°C (spray)
- Perfect drying.
APPLICATION OF PAINT:
Powder paints are not diluted upon application and are not dissolved in any liquid. In the application device powder paint particles are charged and mixed with compressed air, with the help of which they are driven into the spray booth, where the electrically charged powder disperses over the earthed product to be coated. Electrostatic force comes into being, with the help of which the dry powder adheres to the surface.
After melting in an oven, the powder paint runs and forms a smooth surface layer. Hardening occurs at a temperature of 160-200°C, depending on the material and type of powder used. A coated surface treated this way guarantees a product will have perfect surface properties, such as resistance to abrasion, corrosion and erosion. In addition, such treatment ensures that the product always looks great.
- Regular inspection of thickness of titanium conversion layer
- Measurement of paint thickness
- Test of corrosion resistance
- Visual inspection of quality appearance