Component Surface Coating Adhesion via Homogeneous Powder

The patent applies homogeneity by using blasting powder and coating powder with the same chemical composition. This eliminates the problem of residual blasting powder inclusions with different material properties remaining on the surface, ensuring that all powder particles are chemically identical and integrate uniformly with the coating layer, thereby maximizing coating adhesion.

The patent merges the blasting and coating operations by using the same chemical material for both processes. The blasting powder and coating powder are combined into a single material system, allowing the blasting residues to be seamlessly integrated into the coating rather than remaining as foreign inclusions, thus improving overall coating performance and adhesion.

The patent applies segmentation by dividing the powder mixture into different particle size fractions. Coarser particles (larger than 40 μm) are used for blasting to provide mechanical roughening, while finer particles (5-40 μm) are used for coating to ensure smooth coverage and strong adhesion. This size segmentation allows each fraction to perform its specific function optimally.

The patent applies local quality by assigning different particle sizes to different functional requirements within the same process. Larger particles are directed toward blasting operations where mechanical impact is needed, while smaller particles are directed toward coating operations where smooth deposition is required. This local differentiation of particle properties optimizes both blasting effectiveness and coating quality.