What are the main factors that affect the strength of the shot blasting machine?

What are the main factors that affect the strength of the shot blasting machine?

① Shot blast size

The larger the shot blasting, the greater the impact kinetic energy and the greater the shot blasting strength, but the shot blasting coverage is reduced. Therefore, while ensuring the strength of shot blasting, smaller shot blasting should be used as much as possible. In addition, the shot peening size is also limited by the shape of the part. When there is a groove in the part, the shot blasting diameter should be less than half of the inner radius of the groove. The shot blasting particle size is usually selected between 6-50 mesh.

②The hardness of shot blasting

When the blasting hardness is higher than the hardness of the part, the change of its hardness value does not affect the blasting strength;

When the shot blasting is softer than the parts, if the shot blasting hardness value decreases, the shot blasting strength also decreases.

③ Shot blasting speed

When the shot blasting speed increases, the shot blasting strength also increases, but when the speed is too high, the shot blasting damage increases.

④Spray angle

When the shot blast is perpendicular to the surface to be sprayed, the shot blasting intensity is the highest, so the shot blasting should generally be maintained in this state. If limited by the shape of the parts, when shot peening at a small angle must be used, the shot peening size and speed should be appropriately increased.

⑤Breaking amount of shot blasting

The kinetic energy of the shot blasting fragments is low. The more shot blasts broken, the lower the shot peening strength. The irregular shots will scratch the surface of the parts. Therefore, the shots should be removed frequently to ensure that the shot peening integrity rate is greater than 85%. The shot blasting equipment is basically the same, only some auxiliary devices are needed to control the shot blasting process more strictly.