The spraying process of fluorocarbon spraying of PVC wood grain steel plate includes: spraying primer → topcoat → varnish → baking (180-250 ℃) → quality inspection. The construction process of fluorocarbon spraying is different due to the different spraying materials. Next, the process flow of fluorocarbon spraying in the processing of PVC wood grain steel plate is introduced.
1. Purpose of pretreatment in the processing of PVC wood grain steel plate: Before the PVC wood grain steel plate and plate are sprayed, the surface of the workpiece should be decontaminated and chemically treated to form a chromed film and increase the bonding force between the coating and the metal surface. And anti-oxidation ability, is conducive to extending the service life of the paint film.
2. Primer coating in the processing of wood grain aluminum door profiles: as a primer coating for closing the substrate, its effect is to improve the anti-penetration ability of the coating, enhance the protection of the substrate, stabilize the metal surface layer, and strengthen the topcoat and The adhesion of the metal surface can ensure the color uniformity of the topcoat coating, and the thickness of the paint layer is generally 5-10 microns.
3. Topcoat coating in the processing of PVC wood grain steel plate: The topcoat coating is the key layer of the spray coating, which is to provide the decorative color required by the aluminum material, so that the appearance of the aluminum material can meet the design requirements, and protect the metal surface from being damaged. Outside environment atmosphere, acid rain, pollution corrosion, avoid UV penetration. Greatly enhance the anti-aging ability, the top coat is a thicker layer of paint in spraying, and the thickness of the paint layer is generally 23-30 microns.
4. Overcoat paint coating in the processing of PVC wood grain steel plate: Overcoat paint coating is also called varnish coating. The primary purpose is to more effectively enhance the ability of the paint layer to resist external corrosion, protect the topcoat coating, and add the color of the topcoat. Metallic luster, the appearance is more and more obvious, the light is dazzling, and the coating thickness is generally 5-10 microns. The total thickness of the three-spray coating is generally 40-60 microns, and it can be thickened for special needs.
5. Curing treatment in the processing of PVC wood grain steel plate: The three-spray coating generally requires secondary curing, and the aluminum material enters the curing furnace for treatment. The curing temperature is generally between 180 °C and 250 °C, and the curing time is 15-25 minutes. Manufacturers of carbon coatings will provide appropriate temperature and time according to their own coatings.
