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What are the main parameters of the sand blasting process?


When sandblasting, working closer to the surface of your part does not bring better results. And it wastes media (sand material). This is because the working distance reduces the size of the blasting operation area, increases the cycle time, and can more easily crush the media (sand material), reducing its life. The idea is somewhere in between, to get the best balance between your abrasive rate and rate. The hand-controlled suction jet system is six to eight inches.

When using a direct sandblasting gun to blast the system pressure, you should be 10 to 14 inches away. Also keep in mind that the closer you get to thin pieces, the easier it is to warp them, no matter what blasting media (sand material) you use. In addition to finding the most suitable distance, avoid deformation of the blasted area.

This tip optimizes the life of your media (sand material) while also optimizing your blasting effect by using the proportion of sand material used. Using too much sand will not get any faster work, and your sand will wear out much faster.

Too little use will reduce your efficiency and it will be difficult to achieve the effect you want. The amount of sand material should be between 50% and 90% of the storage device. Determine your blasting time to meet your requirements, too long is waste. According to the effect you want and the material of your workpiece, choose the right sand material to complete the job and find the right position angle.

The blasting process parameters of the blasting gun are mainly gun pitch, inclination angle, rotation speed of the clamping table, moving speed, stroke, number of round trips, blasting time, and blasting pressure. The parameters we have used are gun distance: 30 ~ 70mm; inclination angle 30 ~ 70 °; clamping table rotation speed 10 ~ 30; round trip times 3 ~ 9 times; sandblasting pressure: 1.8 ~ 3.5 bar etc.

In specific operations, the upper and lower limits are selected according to factors such as the degree of dirt on the surface of the workpiece, the hardness of the workpiece, and the geometry of the surface of the workpiece. The abrasive we choose in the dry blasting machine is glass beads, which is suitable for spraying some materials with intermediate hardness, such as oil steel, molds, etc .; the abrasive used in the liquid blasting gun is alumina, which has higher hardness and is suitable for Spray some hard materials, such as hard alloy materials.






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