不同形貌微织构自润滑陶瓷刀具切削性能的对比  

Comparison of Machinability of Self-lubrication Ceramic Tools with Different Morphological Micro-textures

作　　者：屠春娟[1,2] 郭旭红[2] 郭大林 陈亚东 关集俱 TU Chunjuan;GUO Xuhong;GUO Dalin;CHEN Yadong;GUAN Jiju(Suzhou Institute of Industrial Technology,Suzhou 215104,China;Mechanical and Electrical Institute,Soochow University,Suzhou 215006,China)

机构地区：[1]苏州工业职业技术学院,苏州215104 [2]苏州大学机电工程学院,苏州215006

出　　处：《机械工程材料》2018年第11期47-51,57,共6页Materials For Mechanical Engineering

基　　金：江苏省科技成果转化项目(BA2014004);江苏高校品牌专业建设工程资助项目(PPZY2015B186);江苏省自然科学基金资助项目(BK20170373);苏州市重点实验室资助项目(SZS201815)

摘　　要：采用激光技术在Al2O_3/TiC陶瓷刀具前刀面加工出微凹坑和微沟槽2种微织构,并填充MoS2固体润滑剂制备得到微织构自润滑刀具,研究了不同形貌微织构自润滑刀具对淬硬钢的切削性能,并与传统无织构陶瓷刀具的进行了对比。结果表明:在不同切削条件下,采用微凹坑织构刀具切削时的主切削力较采用无织构刀具的平均降低了26.91%,而采用微沟槽织构刀具切削时的平均下降了15.85%;在切削速度较高、进给量和背吃刀量均较小的条件下,采用微织构刀具切削后工件的表面粗糙度较采用无织构刀具的有明显下降;微凹坑织构刀具切削后的切屑变形程度明显低于微沟槽织构刀具和无织构刀具切削后的,其前刀面的磨损程度明显低于微沟槽织构刀具和无织构刀具的,微凹坑织构刀具比微沟槽织构刀具表现出更佳的切削性能。Two micro-textures including micro pits and micro groove were made by laser technique on the rake face of Al2 O3/TiC ceramic tools,and filled with MoS2 solid lubricant.Then the micro-texture self-lubricating tools were obtained,and were used to cut hardened steel.The cutting performance of self-lubricating tools with different morphological micro-textures was studied and compared with that of traditional untextured tools.The results show that compared with the untextured tools,the main cutting force decreased by an average of 26.91%after cutting by the micro pits textured tool,and decreased by an average of 15.85% after cutting by the micro groove texured tool.The surface rough of the workpiece cutting by micro-textured tools was smaller than that cutting by untextured tools under the condition of high cutting speed and minor cutting depth and feed speed.The deformation degree of the chips after cutting by the micro pits textured tool was slighter than that after cutting by micro groove textured and untextured tools.The wear degree on the rake face of the micro pits textured tool was slighter than that of micro groove textured and untextured tools.The cutting performance of the micro pits textured tool was better than that of micro groove textured tool.

关 键 词：微织构 自润滑 切削性能 切削力 表面粗糙度 切屑变形 磨损 

分 类 号：TG113.26[金属学及工艺—物理冶金] TH117.1[金属学及工艺—金属学]