Classification and the use of a variety of abrasive range

Abrasive grinding material is used, the general classification is now common abrasives, superhard abrasive types; ordinary abrasive including corundum (corundum, corundum, etc.), and its main chemical composition Al2O3 (aluminum oxide) , silicon carbide (black silicon carbide, green silicon carbide), and its main chemical components of SiC (silicon carbide). They are corundum hardness, microhardness 2000-2200 kgf / mm 2; corundum, microhardness 2200-2300 kgf / mm 2; black silicon carbide, microhardness 3100-3300 kgf / mm 2 ; green silicon carbide, microhardness 3200-3400 kgf / mm 2; grain size from 4 # - powder W0.5 (or finer), the hardness in the order that we can sort out the processing of granite is green silicon carbide, black carbonized silicon processing marble is corundum (soft), black, green silicon carbide (hard).The cost from the material in order to see the green silicon carbide, black silicon carbide, corundum, abrasives can be made around these, inorganic abrasive tool including magnesite, ceramics, etc.; organic grinding tools, including phenolic, unsaturated resins, and epoxy, etc. (This also includes emery cloth sandpaper), which constitute the common abrasive grinding tools, grinding tools.Superabrasive diamond abrasive belongs, and its processing history is a relatively long, but as more use is the last three decades a large number of industrial production, and its hardness 8000-10000 kgf / mm 2; hardness is the highest , processed materials are micro-cutting mechanism, so it is the preferred cutting tool, in recent years, there is a massive increase in the yield and reduction of industrial costs, high processing efficiency, (which is 5 times more than normal), the processing effect (may demanding material for polishing), and thus, it is a widely used.Diamond grinding tools are metal, resin, ceramics, etc. This is the type of binding agent according to the classification, metal grinding instruments mainly include iron-based, copper-based, these types of cobalt, it determine the different types of materials processing costs, as grinding tools, from the most coarse particle size (20 #), often to the fine grain size up to 400 # for use; which is characterized by long life, but the cost will be higher.Resin grinding tools, due to the production costs are relatively low, the application should be relatively more, it is now also used for rough grinding to polishing, grinding and polishing in the fine-grained aspects is its greatest advantage; ceramic diamond grinding tools are recent was the fastest growing tool, its processing performance in metalworking take long, to avoid resin processing short, is technically a good advantage, but because of cost reasons, have not seen used in stone renovation.