高速切削钛合金的涂层硬质合金刀具粘结磨损  

Adhesive Wear of Coated Cemented Carbide Tools in High Speed Cutting of Titanium Alloy

作　　者：胡小龙 邵芳 高占雨 姚淑霞 HU Xiao-long;SHAO Fang;GAO Zhan-yu;YAO Shu-xia(School of Mechanical Engineering,Guizhou University,Guiyang 550025,China;Academic Affair Office,Guizhou Institute of Technology,Guiyang 550003,China;不详)

机构地区：[1]贵州大学机械工程学院,贵阳550025 [2]贵州理工学院教务处,贵阳550003 [3]山东滨州渤海活塞股份有限公司,山东滨州256602

出　　处：《组合机床与自动化加工技术》2021年第8期122-125,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金项目(51465009);贵州省科学技术基金项目(黔科合J字[2014]2085号);贵州省“125计划”重大科技专项(黔教合重大专项字[2014]035号)。

摘　　要：针对粘结磨损对涂层硬质合金刀具使用寿命的影响问题,为了优化刀具涂层材料,降低刀具磨损率,基于热力学理论,计算了硬质合金刀具涂层材料的焓值,分析了涂层材料的耐磨性,研究了涂层硬质合金刀具粘结磨损规律。通过涂层硬质合金刀具切削加工钛合金的实验,使用EDS分析仪和白光干涉仪分别对涂层硬质合金刀具切削加工后的元素能谱和表面形貌进行了分析。结果表明:采用热力学理论分析方法可以获得较好的粘结磨损预测精度,高速切削时刀具磨损区域发生了粘结磨损,磨损原因与元素扩散密切相关;粘结磨损主要发生在中速切削时;随着切削速度的提升,粘结磨损率先增加后降低。所得结论将为优化切削参数、提高刀具寿命提供有益的参考。In view of the influence of adhesive wear on the service life of coated cemented carbide tools,in order to optimize the coating material and reduce the tool wear rate,the enthalpy of the coating material of the cemented carbide tool was calculated based on the thermodynamic theory,the wear resistance of the coating material was analyzed,and the adhesive wear law of the coated cemented carbide tool was studied.Based on the experiment of cutting titanium alloy with coated cemented carbide tool,EDS and white light interferometer were used to analyze the elemental energy spectrum and surface morphology of coated cemented carbide tool after cutting.The results show that:using the thermodynamic theory analysis method can obtain better prediction accuracy of bond wear.In high-speed cutting,adhesive wear occurs in the tool wear area,and the wear reason is closely related to element diffusion;the adhesive wear mainly occurs in the medium speed cutting;with the increase of cutting speed,the adhesive wear first increases and then decreases.The conclusion will provide useful reference for optimizing cutting parameters and improving tool life.

关 键 词：涂层硬质合金刀具 钛合金 扩散磨损 粘结磨损 

分 类 号：TH162[机械工程—机械制造及自动化] TG711[金属学及工艺—刀具与模具]