(1) The surface roughness of the castings cleaned by shot blasting is closely related to the particle size and projectile velocity of the abrasive used. The larger the particle size is, the higher the surface roughness life value is. The higher the projectile velocity is, the higher the surface roughness is. The surface roughness of graded steel shot is lower than that of single size steel shot.
(2) The application of graded steel shot has a great influence on the cleaning efficiency of castings and can improve the cleaning efficiency of castings.
(3) The feeding method has a great influence on the cleaning efficiency and surface roughness. In order to ensure that the cleaning efficiency does not decrease and the surface quality of the casting is stable, timely replenishing the feeding and keeping the steel shot grading unchanged.
(4) Shot blasting time has a certain effect on the surface roughness of castings. With the extension of time, the surface roughness of castings tends to a certain value.
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