摘要
为研究氮硅涂层陶瓷刀具切削性能及磨损机理,采用物理气相沉积(PVD)工艺分别在氮化硅刀具表面沉积TiAlN和CrAlN涂层,利用切削灰铸铁HT200实验对刀具寿命和磨损机理进行了系统研究,探讨不同切削深度、进给率、切削速度下刀具的磨损情况。着重关注陶瓷涂层车削铸铁的最佳切削速度,分析了不同切削速度下刀具的切削性能。结果表明:TiAlN和CrAlN涂层刀具能有效提高刀具硬度,三种刀具切削灰铸铁的磨损机理无明显区别,磨损机制主要是磨粒磨损;随着切削速度的增大(V_(c)=250 m/min~450 m/min),氮化硅涂层陶瓷刀具的切削寿命均迅速减少,能够为氮化硅涂层陶瓷刀具的研发提供理论指导。
In order to study the cutting performance and wear mechanism of nitrogen-silicon coated ceramic tools,TiAlN and CrAlN coatings were deposited on the surface of silicon nitride tool by physical vapor deposition( PVD).The tool life and wear mechanism were systematically studied by cutting gray cast iron HT200.Different depths of cut,feed rate and cutting speed were discussed.The wear condition of the lower tool,and pays attention to the optimal cutting speed of ceramic coated cast iron.The cutting performance of the tool under different cutting speeds is analyzed.The results show that the TiAlN and CrAlN coated tools can effectively improve the hardness of the tool.There is no obvious difference in the wear mechanism of gray cast iron.The wear mechanism is mainly abrasive wear.With the increase of cutting speed( V_(c)= 250 m/min ~ 450 m/min),the cutting life of silicon nitride coated ceramic tools is rapidly reduced.Provide theoretical guidance for the development of nitrogen-silicon coated ceramic tools.
作者
阮铭业
张建
彭晓君
朱先勇
RUAN MingYe;ZHANG Jian;PENG XiaoJun;ZHU XianYong(College of Mechanical and Automotive Engineering,Zhaoqing College,Zhaoqing 526061,China)
出处
《机械强度》
CAS
CSCD
北大核心
2021年第1期101-106,共6页
Journal of Mechanical Strength
基金
教育部产学合作协同育人项目(201801086044)资助。
关键词
陶瓷刀具
切削速度
氮硅涂层
磨损机理
Ceramic cutter
Cutting speed
Nitrogen-silicon coating
Wear mechanism