What is the effect of the hardness of steel shot on its use effect?

　　1. Cleaning efficiency

　　Hardness and cleaning speed: The hardness of cast steel shot directly affects its cleaning efficiency. When cast steel shot with higher hardness hits the surface of the workpiece, it can more effectively remove impurities such as scale, rust and old coating, thereby speeding up the cleaning speed.

　　Hardness and energy transfer: cast steel shot with higher hardness can transfer more energy to the surface of the workpiece when it hits, making impurities easier to peel off.

　　2. Surface quality

　　Hardness and surface roughness: The hardness of steel shot has an important influence on the surface roughness of the workpiece. Steel shot with moderate hardness can maintain the relative smoothness of the workpiece surface while cleaning impurities. If the hardness of the steel shot is too high, it may cause the surface of the workpiece to be too rough, or even scratches or pits; if the hardness is too low, it may not be able to effectively remove impurities, resulting in poor surface quality.

　　Hardness and surface uniformity: Steel shot with uniform hardness can ensure the uniformity of the surface cleaning of the workpiece, avoiding excessive or insufficient local cleaning.

　　3. Service life

　　Hardness and wear resistance: The hardness of steel shot is closely related to its wear resistance. Steel shots with higher hardness can maintain better shape and dimensional stability when repeatedly hitting the surface of the workpiece, thereby extending the service life.

　　Hardness and breakage rate: Steel shots with moderate hardness are not easy to break when hitting, which can reduce the dust and fine particles generated by breaking, and reduce the harm to the environment and operators.

　　4. Equipment loss

　　Hardness and equipment wear: The hardness of steel shots also affects the loss of shot blasting or sandblasting equipment. Steel shots with too high hardness may accelerate the wear of equipment components and increase maintenance costs; while steel shots with moderate hardness can reduce equipment loss and extend the service life of equipment.

　　5. Safety

　　Hardness and dust generation: Steel shots with lower hardness are more likely to break when hitting, generating more dust. These dusts may not only cause harm to the environment and operators, but also affect the cleaning effect. Therefore, when selecting steel shots, it is necessary to weigh the relationship between hardness and dust generation.