镶嵌固体润滑剂的自润滑刀具切削温度研究  

Cutting Temperature of Cemented Carbides Base Self-lubricated Tool Embedded with Solid Lubricants

作　　者：宋文龙[1] 邓建新[1] 吴泽[1] 颜培[1] 张辉[1] 

机构地区：[1]山东大学机械工程学院,济南250061

出　　处：《农业机械学报》2010年第1期205-210,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家"863"高技术研究发展计划资助项目(2009AA044303);泰山学者专项基金项目;山东省杰出青年基金资助项目(JQ200917)

摘　　要：在刀具前刀面月牙洼磨损区域加工装填MoS2固体润滑剂的微孔,制备了一种镶嵌固体润滑剂的自润滑刀具(SLT-1),并与前刀面有孔但无固体润滑剂的刀具(SLT-2)以及传统刀具(SLT-3)进行切削对比试验。用TH5104红外热像仪测试了3种刀具切削45号淬火钢的切削温度变化规律。结果表明:SLT-1自润滑刀具的切削温度明显降低,比传统刀具SLT-3降低15%～20%,SLT-2刀具比SLT-3降低5%～10%。通过切削温度理论分析表明,由于自润滑刀具SLT-1在前刀面形成润滑膜,降低了前刀面剪切应力以及减少了刀屑接触面积,使得切削温度显著降低。Microholes were made on the rake of the cemented carbide tools and MoS2 solid lubricants were embedded into the microholes to form self-lubricated tools（SLT-1）.Dry machining tests on hardened steel were carried out with the self-lubricated tool,the tool with microholes on the rake without solid lubricants（SLT-2） and the conventional tool（SLT-3）.The variation of cutting temperature for 45# hardened steel cutting with the three cutting tools were tested by the TH5104 thermo tracer.The result shows that the cutting temperature of SLT-1 self-lubricated tool decreased obviously.It deceased 15%～20% than that of SLT-3.And the cutting temperature of SLT-2 decreased 5%～10% than that of SLT-3.Through the analysis of cutting temperature distribution,it was observed that the cutting temperature decreased and the raked face resistance was improved since self-lubricating film on the rake face decreased the shear stress and the contact length between chip and tool.

关 键 词：干切削 切削温度 自润滑刀具 摩擦磨损特性 

分 类 号：TH117.1[机械工程—机械设计及理论] TG501.4[金属学及工艺—金属切削加工及机床]