摘要
使用硬质合金刀具、硬质合金涂层刀具和CBN刀具在相同切削参数下进行钛合金(Ti-6Al-4V)的高速车削实验。实验表明:CBN刀具使用寿命最长,其次是硬质合金涂层刀具;切削加工过程中,CBN刀具的切削力比较稳定,硬质合金刀具和涂层刀具的切削力随着不断切削而迅速增大,切削过程中,涂层刀具的切削力比硬质合金刀具的切削力小;3种刀具的前刀面磨损形式均不同于常规月牙洼磨损,而是切削刃处磨损最大的斜面磨损,3种刀具材料的磨损机理都有磨粒磨损、粘结磨损和扩散磨损,其中在硬质合金刀具和涂层刀具的磨损边缘区还发生氧化磨损。
Straight cemented carbide tool, coated carbide tool and CBN cutting tool were used to high-speed turn titanium alloys （Ti-6Al-4V） in the same cutting parameters. The results of trial were analyzed, and it is found that the cutting life of CBN tool is longest, and the second one is coated carbide tool. During the process of machining, the cutting forces of CBN tool are very stable, as to straight cemented carbide tool and coated carbide tool, their cutting forces increase rapidly, and the cutting forces of coated carbide tool are smaller than that of cemented carbide tool during machining process. The wear forms of rake face of all cutting tool materials is not crater wear, but slope plane wear with the maximum wear at the cutting edge, and the wear mechanism of three kinds of tool materials includes abrasive wear, adhesion wear and diffusion, meanwhile oxidation wear is found at the wear edge of cemented carbide tool and coated carbide tool.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2009年第15期29-32,共4页
Journal of Wuhan University of Technology
基金
国家自然科学基金(50675120)
教育部博士点基金(20070422012)
关键词
刀具材料
钛合金
刀具寿命
磨损机理
tool material
titanium alloys
cutting life
wear mechanism
