Based on fuzzy mathematics, comprehensive comparisons among four kinds of materials for manufacturing shearer bits were made in six aspects which are respec- tively hardness, tensile strength, impact toughness, relati...Based on fuzzy mathematics, comprehensive comparisons among four kinds of materials for manufacturing shearer bits were made in six aspects which are respec- tively hardness, tensile strength, impact toughness, relative wearability, relative lifespan and relative cost. Material 4 is preferred to be the targeted choice for manufacturing bits with superior comprehensive and economic performances.展开更多
For coal mine production, the role of mechanical bearings is to provide basic support for the transportation of mining coal resources. For coal production, because of its large production capacity and intensive produc...For coal mine production, the role of mechanical bearings is to provide basic support for the transportation of mining coal resources. For coal production, because of its large production capacity and intensive production, mechanical bearings will wear under the influence of high strength and high load in coal transportation, which will lead to bearing failure in the long run, thus affecting the transportation efficiency of coal resources. In order to improve this situation, it is necessary to analyze the wear failure of coal mine mechanical bearings, and to formulate corresponding preventive measures accordingly. Based on this, this paper focuses on the analysis method of mechanical bearing wear failure, and puts forward corresponding preventive measures, in order to effectively improve the current situation of coal mine production.展开更多
文摘Based on fuzzy mathematics, comprehensive comparisons among four kinds of materials for manufacturing shearer bits were made in six aspects which are respec- tively hardness, tensile strength, impact toughness, relative wearability, relative lifespan and relative cost. Material 4 is preferred to be the targeted choice for manufacturing bits with superior comprehensive and economic performances.
文摘For coal mine production, the role of mechanical bearings is to provide basic support for the transportation of mining coal resources. For coal production, because of its large production capacity and intensive production, mechanical bearings will wear under the influence of high strength and high load in coal transportation, which will lead to bearing failure in the long run, thus affecting the transportation efficiency of coal resources. In order to improve this situation, it is necessary to analyze the wear failure of coal mine mechanical bearings, and to formulate corresponding preventive measures accordingly. Based on this, this paper focuses on the analysis method of mechanical bearing wear failure, and puts forward corresponding preventive measures, in order to effectively improve the current situation of coal mine production.