Common problems and solutions for supersonic spraying?

Common problems and solutions for supersonic spraying?

Supersonic spraying is a fast coating process, but in practical applications, it often encounters some common problems that affect the quality and production efficiency of workpieces. Below are some common problems and their solutions.

Reasons for uneven spraying: nozzle blockage, excessive spraying distance, unstable air pressure, etc. Solution: Clean the nozzle, adjust the spraying distance, and adjust the air pressure.

Reasons for uneven coating thickness: inconsistent spraying speed, uneven workpiece surface, uneven coating viscosity, etc. Solution: Control the spraying speed, treat the surface of the workpiece, and adjust the viscosity of the coating.

Reasons for porosity in coatings: impurities such as dust and oil stains during spraying, thick coatings, unstable air pressure, etc. Solution: Clean the surface of the workpiece, control the coating thickness, and maintain stable air pressure.

Reasons for weak adhesion of coatings: improper surface treatment of workpieces, non adhesion of primers, poor quality of coatings, etc. Solution: Strengthen the surface treatment of the workpiece, select suitable primers, and use good coatings.

The reasons for blistering in the coating include high air pressure during spraying, poor rheological properties of the coating, and moisture on the surface of the workpiece. Solution: Reduce air pressure, choose coatings with good rheological properties, and keep the surface of the workpiece dry.