Nmb imported bearing grinding heat generation and transfer formula

Import bearings Nmb formula of the generation of grinding heat and spreads Nmb imported bearing grinding heat from grinding power consumption. Import bearings Nmb grinding, grinding in addition to the per unit volume ( Or quality) The energy dissipations of the metal is called than grinding can E. The unit is n. m/ram. Or J/ram. , said: by type formula of inverse mill '+', along the mill to take 'a'. Except few grinding energy consumption for new surface needed for the formation of surface energy, the residues in surface and wear debris of strain energy and kinetic energy of the chip outflow, the vast majority of consumption in the heating workpiece, the grinding wheel and grinding chips and radiation to escape. Generally speaking, the ordinary grinding than grinding for 20 ~ 60 j/mm. The grinding and cutting grinding for 10 ~ 30 j/mm3. Apparently ordinary grinding heat is larger, cutting grinding import bearings Nmb, due to large chip thickness, the chip formation than smaller, to the quantity of heat of workpieces is reduced accordingly. But from the perspective of the model of heat transfer are scattered, cutting, grinding heat concentrated in the front of the wheel, the highest temperature on the contact, if improper selection cutting grinding cutting feed speed, there will be a hot line of the large workpiece. When the feed speed is too low, the grinding heat to the artifacts in the depth of the heat transfer will be faster than cutting speed of grinding wheel, workpiece temperature will increase rapidly. When choosing appropriate feed speed, most of the preheating of Nmb bearings imported materials will be cut off quickly, can avoid the internal transfer heat to the workpiece, which is cutting grinding can take high removal rate and the cause of the workpiece is not burn. In the heat conduction model, along with the temperature of the refers to the average temperature of the workpiece. How to calculate the average temperature of workpiece, the temperature distribution in the grinding zone has what law of grinding mill grain temperature, grinding temperature problem such as how to measure, all is the main problem of grinding mechanism research.