Sandblaster abrasive selection method guide
Abrasives are very diverse, mainly including: steel sand, steel shot, quartz sand, brown corundum, copper ore, glass sand, walnut shell, aluminum pellets, etc. Different abrasives should be selected according to different substrates and different requirements. In principle, the choice of the same material as the substrate of the abrasive is the best way, under a certain pressure, the higher the hardness of the abrasive, the higher the cleaning efficiency; the abrasive particles are small, the efficiency is relatively high. Since the inner hole of the medium-medicine sand gun of the pressure-feeding type blasting machine is between 6-12MM, the larger the abrasive particles, the smaller the amount of particles passing through the aperture of the blasting gun, and the more points the unit area hits the surface of the workpiece. Less, the efficiency of sandblasting is low. Conversely, the smaller the abrasive particles, the more particles are discharged through the aperture of the blasting gun, and the more points that hit the surface of the workpiece in the unit, the higher the blasting efficiency. However, if the diameter of the abrasive particles is less than 0.05 mm, it is like dust, and the kinetic energy hitting the surface of the workpiece is small, there is no power, and the efficiency is not high.
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1, to see the size of the workpiece, choose box sandblasting machine, mobile sand blasting machine, and automatic sand blasting machine;
2, depending on the shape of the product, choose the specifications of the sand blasting machine, generally have a fixed specification below one meter, especially large to be customized or open.
3, the degree of product surface requirements, this specific depends on dry or wet spray, if it is dry spray, the choice of abrasive is a lot, wet spray is generally glass sand.
4, some accessories of the sand blasting machine should be familiar with, sandblasting guns and sandblasting gloves are often changed, because sandblasting is actually very abrasive
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