The invention provides a
coating spraying process for an aluminum
alloy wheel. The
coating spraying process comprises the following steps: S1, surface treatment; s2, spraying a bottom
coating; s3, spraying a
surface coating; s4, spraying a nano-particle reinforcing layer; s5, thermal
plasma spraying post-treatment is carried out; according to the process method, the
adhesive force can be improved, the cold
plasma treatment technology can efficiently activate the surface of the aluminum
alloy, the
adhesive force between the coating and the base material is enhanced, and the risk that the coating is peeled off is reduced. And by adding the nano-particle reinforcing layer, the surface
hardness of the coating is remarkably improved, and the coating has higher scratch resistance. And the
corrosion resistance is enhanced, specifically, the
corrosion resistance and the
ultraviolet resistance of the aluminum
alloy wheel are greatly improved through the optimized formula of the bottom coating and the
surface coating, especially the application of a nano reinforcing material and a photocureable coating. The
ultraviolet curing technology of the photocureable coating greatly shortens the
curing time, the high-frequency production requirement is met, and the production efficiency is improved.