作　　者： ; ; ; ; ;

机构地区： 山东大学

出　　处： 《工具技术》 2011年第7期18-22,共5页

摘　　要： 采用激光加工方法在硬质合金车刀前刀面月牙洼易磨损区域加工微织构并填充固体润滑剂MoS2,制备了微织构自润滑刀具(MTR-1和MTR-2),并与传统硬质合金刀具MT0进行了干切削淬火45钢的对比试验。试验结果发现,与传统硬质合金刀具MT0相比,微织构自润滑刀具能够显著降低切削力、减小刀具前刀面磨损。同时,微织构自润滑刀具的切削性能受微织构结构影响,合理的微织构结构能够减少切屑的粘结,从而提高微织构自润滑刀具的切削性能。 Micro-textures were made using laser on the rake face of the cemented carbide tools. Molybdenum disulfide （MoS2） solid lubricants were embedded into the micro-grooves to form micro-texturing self-lubricated cutting tools（MTR-1 and MTR-2）. Dry cutting tests on 45 hardened steel were carried out with these self-lubricated cutting tools and conventional cemented carbide tools MT0. As the results, the cutting forces and the rake wear with the micro-texturing self-lubricated cutting tools were greatly reduced compared with that of conventional cemented carbide tools. Meanwhile, the machinability with the self-lubricated cutting tools Was effected by the structure of the textures, and it can be improved by the reduction in bonding of the chip with bet- ter micro-texturing design.

关 键 词： 干切削 微织构 自润滑刀具 刀具磨损 切削力

领　　域： [金属学及工艺] [机械工程]