The particle size of garnet sandblasting abrasive refers to its particle size, which can be divided into four groups: abrasive, grinding powder, micro powder and ultra-fine powder. Among them, the particle size number of the two groups of abrasives, abrasive grain and grinding powder, is expressed by the number of meshes on each inch of screen length, and its mark is to add a "" symbol on the upper right corner of the number of particle size numbers. For example, 240 refers to 240 holes per inch of screen length. The larger the particle size number is, the smaller the abrasive particles are. The particle size number of the two groups of abrasive, micro powder and ultra-fine powder, is expressed by the actual size of the particle, and its mark is to add a letter "W" before the particle size number. Sometimes it can also be converted into mesh number. For example, W20 indicates that the actual size of abrasive particles is 20 μ m~14 μ M, the equivalent mesh number is 500.
Garnet sandblasting abrasives of different specifications can be divided into coarse, medium and fine particles according to the particle size. Medium particle is the basic particle size of abrasive powder, which is the main factor to determine the abrasive grinding ability and accounts for a large proportion in the particle size composition. The grinding capacity of the grinding powder after centrifugal separation will be 20% higher than that before separation. Fine particles play a small role in grinding. Coarse particles are not only harmful to the quality of the grinding workpiece, but also reduce the grinding efficiency. Their number should be minimized in the particle size composition. Therefore, in terms of grinding efficiency and work quality, it is required that the abrasive particles be uniform.
