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Main factors affecting the blasting strength of Drum shot blasting machine
Feb 06, 2019

1. shot size: the larger the shot, the greater the impact kinetic energy, the greater the shot blasting strength, but the coverage of shot blasting is reduced. Therefore, while ensuring shot blasting strength, try to use smaller shot blasting. The size of the shot peening is also limited by the shape of the part. When there is a groove on the part, the diameter of the shot blast should be less than half of the radius of the inner circle of the groove, and the shot granule size is often selected between 6 and 50 mesh.

2. Hardness of shot blasting: When the hardness of shot blasting is higher than the hardness of the part, the change of its hardness value does not affect the shot blasting strength; when the shot blasting is softer than the part, if the shot blasting hardness value decreases, the 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.

4. Injection angle: When the shot blasting jet is perpendicular to the surface to be sprayed, the shot blasting strength is the highest, so generally, the blasting treatment should be performed in this state. If it is limited by the shape of the part, it is necessary to increase the size and speed of the shot peening when shooting at a small angle.

5 .shot crushing amount: the kinetic energy of the shot blasting fragment is low, the more shot blasting is broken, the shot peening strength is reduced, and the irregular broken pellets will scratch the surface of the part, so the broken granules should be removed frequently to ensure the shot peening integrity rate. More than 85%. The shot blasting equipment is basically the same, and only a few auxiliary devices are needed to control the shot blasting process more strictly.

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