高速车削铁基高温合金Al_(2)O_(3)-SiC_(w)陶瓷刀具磨损机理  

Wear Mechanisms of an Al_(2)O_(3)-SiC_(W) Ceramic Insert in High-Speed Turning of Iron-based Superalloys

作　　者：骆传跃 郑光明[1] 杨先海[1] 张国栋 颜培 于洲 LUO Chuan-yue;ZHENG Guang-ming;YANG Xian-hai;ZHANG Guo-dong;YAN Pei;YU Zhou(School of Mechanical Engineering,Shandong University of Technology,Zibo Shandong 255000,China;Shandong YaohuaTenai Technology Co.,LTD.,Binzhou Shandong 256619,China;不详)

机构地区：[1]山东理工大学机械工程学院,山东淄博255000 [2]山东耀华特耐科技有限公司,山东滨州256619 [3]北京理工大学机械与车辆学院,北京100081

出　　处：《组合机床与自动化加工技术》2021年第11期160-163,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：山东省自然科学基金(ZR2020ME156);国家自然科学基金(52075306,51505264);国家重点研发计划(2018YFB2002202)。

摘　　要：针对铁基高温合金GH2132,采用Al_(2)O_(3)-SiC_(W) 陶瓷刀具进行高速干车削试验,分析在不同切削速度下的切屑变形、切削力、切削温度、刀具后刀面磨损量以及磨损机理。研究表明:随着切削速度的增大,切屑由带状向崩碎屑转变,切削力表现出先增大后减小再增大趋势,切削温度逐渐升高,在v=250 m/min时刀具后刀面磨损量最小。刀具主要的磨损形式为正常前、后刀面磨损和边界磨损,以及非正常的崩刃。主要磨损机理为磨粒磨损、粘结磨损、氧化磨损。揭示陶瓷刀具高速切削性能,对切削铁基高温合金刀具的选择具有一定参考价值,为刀具表面强化处理提供理论指导。Al_(2)O_(3)-SiC_(W) ceramic cutting tool was used to conduct high speed dry cutting test for iron based superalloy GH2132.Chip deformation,cutting force,cutting temperature,flank wear and wear mechanism of the ceramic tools were analyzed under different cutting speeds.The research shows that with the increase of cutting speed,the chip changes from ribbon to clashing,the cutting force first increases,then decreases and then increases,the cutting temperature gradually increases,and the flank wearreach minimum when v=250 m/min.The main wear forms of ceramic tools are normal rake wear,flank wear andboundary wear,accompanied with abnormal micro-chipping.The main wear mechanisms were abrasive wear,adhesive wear and oxidation wear.The high speed cutting performance of ceramic cutting tools is revealed,which has certain reference value for the selection of cutting tools for iron base superalloy,and provides theoretical guidance for the surface strengthening treatment of cutting tools.

关 键 词：铁基高温合金 陶瓷刀具 磨损机理 切屑变形 切削温度 

分 类 号：TH162[机械工程—机械制造及自动化] TG506[金属学及工艺—金属切削加工及机床]