White corundum grinding wheel is made of industrial alumina oxide as the main raw material and is smelted in electric arc furnace.
The main mineral a-ALO is more than 98%. Its hardness is similar to brown corundum, but its toughness is lower, and its cutting performance is higher than brown corundum.
Production process:
White corundum Long life grinding wheel is one of the most important grinding tools in grinding. The white corundum grinding wheel is a porous body made by adding binder into the abrasive, then compacted, dried and roasted. Because of the different abrasive, binder and manufacturing technology, the characteristics of grinding wheels vary greatly, so the grinding quality, productivity and economy have an important impact. The characteristics of grinding wheel are mainly determined by abrasive, strength, binder, hardness, microstructure, shape and size and other factors.
According to the abrasive used, it can be divided into ordinary abrasive (corundum and silicon carbide) grinding wheel.
According to the shape can be divided into flat grinding wheel, bevel grinding wheel, cylindrical grinding wheel, cup grinding wheel, dish grinding wheel, bowl grinding wheel, concave grinding wheel, conical grinding wheel, etc. According to the binder can be divided into ceramic grinding wheel, resin grinding wheel, rubber grinding wheel, metal grinding wheel, etc. The characteristic parameters of grinding wheel are abrasive, particle size, hardness, binder, shape and size. Since grinding wheels usually work at high speeds, they should be tested before use for rotation (to ensure that the wheel does not break at the highest operating speed) and static balance (to prevent machine tool vibration when working). After grinding for a period of time, the grinding wheel should be trimmed to restore the grinding performance and the correct geometry.
Shape feature
According to the structure of the machine tool and the needs of grinding, the grinding wheel is made into various shapes and sizes. The outer diameter of the grinding wheel should be selected as large as possible to increase the circumferential speed of the grinding wheel, which is beneficial to improve the grinding productivity and surface roughness. In addition, under the condition of machine stiffness and power permitting, if fast working grinding wheel with large width is selected, the productivity can be improved and the roughness can be reduced. However, in grinding materials with high thermal sensitivity, the width of the grinding wheel should be reduced appropriately in order to avoid burns and cracks on the surface of the workpiece.
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