A Study of the Potential of Improving Performance of AS20 Diamond Powders Through Altering Their Dimensional and Physico-Chemical Characteristics

Research of the Cutting Mechanism at Electrical Discharge Grinding

“…Since in this case not all the grits are of interest, but only those that are located within the cutting surface. The wear of the diamond-bearing layer of the wheel corresponding to the average grit size of the main fraction d can be taken as the pitch of the helical surface S. As a rule [7], the grits of powders, in particular diamond, are divided by size into the main (quantitatively predominant), large and small fractions. Moreover, the percentage of each of them is strictly regulated for powders of a certain grit size.…”

“…The analysis of equation (7) shows that the increase in the efficiency of the application of diamonds in the wheel can be achieved with electrical discharge grinding due to the reduction of wear S, and the corresponding variation in the concentration of diamonds and technological modes of processing. This puts forward the task of further improving the process of electrical discharge grinding with bringing the diamond use factor to at least 40 %, as well as underlines the need for careful selection of the optimal diamond concentration in the tool and the grinding conditions.…”