Refinement of the formula for assessing the wear rate of excavator teeth

On the basis of the experimental data obtained during the observation of the operational reliability of mining excavators, the authors clarified the formula for assessing the abrasive wear rate of rotary excavator bucket teeth under the conditions of a specific coal mining complex in Siberia (Krasnoyarsk, Russia). Despite the fact that, in accordance with the global trend, the production of hydrocarbon carriers should be reduced, and in some countries, coal production has already been stopped (Germany), the energy sector of many countries is still to a great extent based on the use of coal. In this regard, improving the reliability of mining equipment is of great practical interest. To assess the reliability, predict the time to replace parts and plan the volume of production of spare parts, it is important for engineers to have the method for wear rate estimation. The method for this estimation, known since 1986, [1] was modified by the authors to clarify the defining constant in the equation. The clarification was made on the basis of experimental data, with the use of information from the literature and on the basis of experts’ recommendations. Real data concerning the reliability and wear rate were used.