中文摘要：

通过在前刀面月牙洼磨损区域加工装填MoS2固体润滑剂的微孔产生“微池效应”来改善刀具的摩擦学特性，制备了YG8微池润滑刀具．以该微池刀具对45^#钢进行干切削试验，结果表明：微池刀具与普通的YG8刀具相比具有良好的摩擦磨损特性，切削力明显减小，前刀面摩擦系数显著降低．通过扫描电子显微镜（SEM）和能谱分析（EDX）对微池刀具前刀面观察研究，分析了刀具自润滑机理：微池刀具前刀面小孔中的润滑剂受热膨胀及切屑摩擦挤压作用析出，在前刀面表面拖覆形成固体润滑层，直接渗入到刀屑接触区域，从而起到减摩润滑作用，改善刀具基体减摩抗磨性能．润滑膜层在切削加工中是一个润滑膜形成、磨损、再形成的循环过程，微池润滑刀具在微孔完全磨损的整个生命周期内始终具有自润滑效果．

英文摘要：

Micro - pool lubricating tool was produced by making micro - holes filled with solid lubricant （ MoS2 ） on the rake face of YG8 tool. The tribological properties of micro - pool lubricating tool was improved by ＂micro - pool＂ effect. Dry cutting tests were carting out on 45^# steel using this kind of micro - pool tool. Results showed that friction coefficient between the tool - chip interface of micro - pool lubricating tool was greatly reduced compared with that of common YG8 tool. On the basis of SEM and EDX analysis of worn surface, the mechanism of ＂micro - pool＂ effect was proposed. Because the lubricant was squeezed out or spread over to the interface during machining processed, a lubricating film was formed to reduce the friction coefficient. The lubricating film on the tool rake face experienced a three - stage cycle, i.e. forming, wearing off and reforming. Therefore, the micro - pool tool had self - lubricating behavior before wearing off of its micro - pool.