Assessment of wear resistance of composite materials and grinding wheels made of them

When developing the tool much attention is paid to experimental methods of searching optimum solutions. At present analytical forecasting of wear resistance and durability of grinding wheels does not provide reliable results. Therefore, improvement of control methods of physical-mechanical parameters of composite materials and grinding wheels is of great importance. The grinding coefficient, cutting speed and wear rate of abrasive wheels depend not only on the quality and characteristics of elastic and viscous abrasive mixtures from which the wheel is made, but also on its operation conditions. The regulation of test conditions (grinding modes) which is not provided by known test methods is necessary for the establishment of dependence of operational properties of the wheel on the quality of the multicomposite elastic and viscous abrasive mixture. The technique of an operational assessment of dynamics of the change of service properties of abrasive wheels in the process of their operation is developed. It is established that in the process of operation the wheel’s service properties decrease as a result of reduction of the relation of peripheral speed of the wheel to the radial feed speed. Information which can be received by the offered technique of grinding wheel testing can be used as the decision-making basis for the improvement of composite abrasive mass of the wheel and for the design of grinding modes.