不同载荷和转速对真空淬火Cr12MoV钢磨损性能的影响  

Effect of Different Load and Rotating Speed on Wear Properties of Vacuum-quenched Cr12MoV Steel

作　　者：姜苗苗[1] 曹培 赵毅红[1] 耿浩然 李靖 龚孜宇 JIANG Miaomiao;CAO Pei;ZHAO Yihong;GENG Haoran;LI Jing;GONG Ziyu(School of Mechanical Engineering,Yangzhou University,Yangzhou 225000,China)

机构地区：[1]扬州大学机械工程学院,江苏扬州225000

出　　处：《热加工工艺》2023年第2期143-146,150,共5页Hot Working Technology

基　　金：扬州市创新能力建设计划项目(YZ2017294)。

摘　　要：在干摩擦条件下,研究了真空淬火Cr12MoV模具钢在不同载荷和转速情况下的滑动摩擦磨损性能。利用摩擦试验机、电子天平、OM和SEM对试样的摩擦系数、磨损量、显微组织和磨痕形貌进行分析。结果表明:随着载荷增大,试样摩擦系数整体呈先上升后下降趋势,磨损量增加原因为摩擦面黏着撕裂及碳化物硬质颗粒脱落引起;随着转速增大,试样摩擦系数整体呈先上升后下降趋势,磨损量增大原因为摩擦面氧化膜不断形成与剥落引起。低载荷下,试样磨损方式为磨粒磨损,随着载荷增加磨损方式变为磨粒磨损和黏着磨损的混合形式;低转速下,试样磨损方式为磨粒磨损,随着转速增加,试样磨损方式转变为摩擦界面氧化膜不断形成与脱落而引起的剥层磨损。The sliding friction and wear properties of the vacuum-quenched Cr12MoV die steel under different load and rotating speed were studied under dry friction conditions. The friction coefficient, the amount of wear, the microstructure and the wear mark morphology of the sample were analyzed by the friction tester, the electronic balance, OM and SEM. The results show that, with the increase of the load, the coefficient of friction of the specimen increases at first and then decreases.The increase of wear is caused by the adhesive tear on the friction surface and the falling off of carbide hard particles. With the increase of rotating speed, the friction coefficient of the sample increases at first and then decreases. The reason for the increase of wear is caused by the continuous formation and spalling of the oxide film on the friction surface. Under low load,the wear mode of the sample is abrasive wear, and with the increase of load, the wear mode becomes a mixed form of abrasive wear and adhesive wear. At low rotating speed, the wear mode of the sample is abrasive wear. With the increase of rotating speed, the wear mode of the sample changes to the peeling wear caused by the continuous formation and shedding of the oxide film at the friction interface.

关 键 词：真空淬火 CR12MOV 摩擦磨损 剥层磨损 

分 类 号：TG161[金属学及工艺—热处理]