Process flow of explosive spraying

       The technological process of explosive spraying can be divided into oil pollution treatment of workpiece surface, dry sand blasting treatment of workpiece surface, cleaning treatment of workpiece surface, explosive spraying, and quality inspection of coating surface. If a thicker coating is to be sprayed, it is necessary to add a coating surface cleaning procedure after the coating reaches a certain thickness, and then continue to spray.



     In order to improve the bonding strength between the coating and the substrate surface, the substrate surface must be cleaned, degreased and surface roughened before explosive spraying, which is an important process in the spraying process. Generally, the surface of the substrate is treated by sandblasting, which can not only remove the oxide film on the surface, but also roughen the surface. After sandblasting, spraying should be carried out in a short time as much as possible. Because the workpiece needs to be moved to a soundproof and dustproof room, special attention should be paid to avoid re-contamination of the workpiece during the moving process, especially that the roughened workpiece should not be touched by hand. surface, so it is best to cover the surface to be sprayed with a clean plastic film.