How does steel shot affect the quality of casting products

　　Steel shot is made of spherical particles by special heat treatment, widely used in shot blasting cleaning, shot peening cleaning, die casting cleaning, casting shot blasting sand cleaning, heat treatment oxidation skin cleaning and other aspects, seriously affect the quality of casting products.

　　1. The quality of casting products in the production of steel shot industry is related to the steel shot and molding process, liquid iron filling, and also related to the cleaning process of shot blasting. The density, hardness, shape and particle size distribution of the steel shot used in the cleaning of casting not only directly affects the surface quality of the casting, but also has a great relationship with the cleaning efficiency.

　　2, through the test, it can be concluded that the nature of the steel shot and cleaning efficiency, surface roughness and cleaning costs have a great relationship, and the density and life of the steel shot has a direct relationship, if the density of the steel shot is low, it indicates that there are more pores and microscopic cracks in the steel shot or higher carbon content, it is easy to break in the process of use. Only the steel pellets with a density greater than 7.4g/cm³ have fewer pores and cracks.

　　3, the use of the steel shot is also related to the projectile speed, the same size of the steel shot, the larger the projectile speed, the higher the surface roughness value, good steel shot, in the cleaning process of the surface of the steel shot layer by layer peeling, steel shot gradually smaller, the composition of the whole system of steel shot size will slowly become smaller, if a long time does not add feeding, the steel shot size in the shot blasting machine will become smaller and smaller, Surface roughness and cleaning efficiency will be reduced, if a feeding too much, the surface roughness of the casting will be larger, affecting its texture.