Cast steel shot is made of high-quality steel chips, which are first dissolved, and then the molten steel is formed into small balls by high-pressure water jet.

　　Steel shot is a kind of commonly used material for metal workpiece treatment. The structure of steel shot is tight and the particle size is even. The surface treatment of metal workpiece with steel shot can increase the surface pressure of metal workpiece and improve the anti fatigue ability of workpiece. The shot formed by cast steel shot is reheated to purify the homogeneity, and then quenched. After quenching, the shot body is dried in the furnace and reheated for tempering to achieve appropriate hardness. The tempered steel shot is sorted into 11 grades according to SAE standard through mechanical screen for shot blasting equipment. Using steel shot to treat metal workpiece surface has the characteristics of fast cleaning speed.

　　Both steel balls and cast steel balls are used for surface pretreatment of castings before spraying; sand cleaning of castings; pipe descaling, etc. It has important applications in aviation industry, automobile industry, oil and gas pipeline, factory maintenance and metal processing.

　　Steel shot and cast steel shot are different in raw materials, manufacturing process is basically the same, and the scope of application is basically the same. The biggest difference is that the hardness of steel shot is higher, and the service life of steel shot is shorter when it is used in the same product. In practical application, we should choose different abrasives according to the requirements of the processed workpiece.

　　What they have in common: the steel shot and steel sand have proper hardness and good rebound. The internal corner and the workpiece with complex shape can be cleaned evenly and quickly, which shortens the time of surface treatment and improves the working efficiency. It is a good surface treatment material. Cast steel shot is used in different processes for products with different grain size and hardness, such as surface strengthening, etc.