On the Analysis of the Estimate of Energy Expenditures in the Diamond Abrasive Treatment by Wheels from Superhard Materials

The estimate of energy expenditures in the diamond abrasive treatment by wheels from superhard materials has been analyzed to determine the consistent data on these parameters. It has been shown that they almost coincide with the literature data reduced to the same dimension (kJ/cm3). At the same time, such data on the relative specific energy intensity of grinding are much higher than the specific melting heat capacity of the treated material. To resolve the existing contradiction, it is proposed for treatment by wheels of superhard materials to calculate the specific energy intensity of grinding with consideration for the abrasive wheel layer spent in the process of grinding, and the formula for calculating the specific energy intensity is proposed. It is shown that calculation by this formula provides an adequate energy intensity estimate, which corresponds to the data on the specific melting heat capacity of such treated tool materials as high-speed steels and oxicarbide ceramics for both the processes of diamond treatment and the treatment with cubic boron nitride wheels.