Abrasives for abrasive brush filaments_FAQ

The chemical composition of natural corundum is alumina, which is mainly produced in South Africa, and is used to polish and grind glass. Emery is also a natural form of alumina. Generally speaking, it is not as pure as corundum. It is mainly produced in Greece and Turkey. It is mostly used to make emery cloth or sandpaper. Garnet abrasives are used in sandblasting, waterjet cutting, manufacturing coated abrasives, filter materials, wear-resistant floor aggregates, etc., and are mostly used in the hardware, steel, casting, ceramic, aluminum, wood, and leather industries. Flint is often used to make sandpaper. Quartz is the earliest material for grinding wheels, and it is still used to make tools and process glass. Pumice is derived from volcanoes and is the raw material for making polishing powder. Diatomaceous earth is the ingredient of polishing powder and oil stone. Other natural abrasives include the particle size of talc, silica, feldspar, chert and chalk. The particle size of the abrasive refers to the particle size of the abrasive. Abrasives can be divided into four groups according to their particle size: abrasive grains, grinding powder, micro powder and superfine powder. Among them, the particle size number of the two groups of abrasive grains and grinding powder is expressed by the number of meshes per inch of screen length, and its mark is to add the '#' symbol to the upper right corner of the number of the particle size number. For example, 240# means that there are 240 holes in each inch of the screen length. The larger the value of the particle size number, the finer the abrasive grains. The particle size numbers of the two groups of micropowder and superfine powder are expressed by the actual size of the particles, and the mark is to add a letter 'W' in front of the particle size number. Sometimes it can be converted into a mesh number. For example, W20 means that the actual size of the abrasive particles is between 20μm and 14μm, which is the same as the mesh number 500#. In the particle size of various abrasives, there are coarse, medium and fine particles. The medium particle is the basic particle size in the grinding powder, and it is the main factor that determines the grinding ability of the abrasive. It occupies a large proportion in the composition of Lido. Practice has proved that the grinding capacity of the ground powder after centrifugal separation will be increased by 20% compared with that before the separation. Fine particles play a very small role in grinding. The particle size is not only detrimental to the quality of the grinding workpiece, but also reduces the grinding efficiency. The number of them should be minimized in the particle size composition. Therefore, in terms of the efficiency of grinding and the quality of work, the abrasive particles are required to be uniform. The abrasive grain group with a particle size of 12#~80# has a larger particle size and is not suitable for abrasive processing. Welcome to www.mxbrushmachinery.com