高速机床主轴石墨轴承材料的选型与性能评价

发布时间：2018-05-17 11:41

本文选题：石墨轴承 + 石墨化度　；参考：《润滑与密封》2017年05期

【摘要】：低黏介质润滑可让机床电主轴获得更高的转速以实现高速高效加工,石墨由于其物性上的优点特别适于低黏介质润滑环境。为选择一种合适的石墨轴承材料使之配合高速加工的需要,在对主轴使用工况分析的基础上,获得石墨轴承材料的性能需求参数。根据性能需求,设计由材料力学实验、热物理实验和摩擦学实验所组成的石墨材料性能测试体系。选取4种常见石墨作为备选材料,对其力学性能、热物理性能及摩擦磨损性能进行测试及评价,并从微观结构上解释产生性能差异的原因。研究结果表明:石墨化度适中并经过浸渍处理的石墨材料更宜于作为高速轴承的选材。
[Abstract]:Low viscosity medium lubrication can make the motorized spindle of machine tool obtain higher rotational speed to realize high speed and high efficiency processing. Graphite is especially suitable for low viscosity medium lubricating environment because of its physical properties. In order to select a suitable graphite bearing material to meet the needs of high-speed machining, the performance requirements parameters of graphite bearing material were obtained on the basis of the analysis of the operating conditions of the spindle. According to the performance requirements, a graphite material performance test system composed of material mechanics experiment, thermal physics experiment and tribology experiment was designed. Four kinds of common graphite were selected as alternative materials to test and evaluate their mechanical properties, thermal physical properties and friction and wear properties, and to explain the reasons for the difference in properties from the microstructure. The results show that graphite with moderate graphitization and impregnation is more suitable for high speed bearing selection.
【作者单位】：西安理工大学机械与精密仪器工程学院;西安交通大学现代设计及转子轴承系统教育部重点试验室;
【基金】：陕西省教育厅专项科研计划项目(15JK1528)
【分类号】：TG502.3;TQ127.11

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