摘要
采用热压成型结合180℃/8 h固化热处理工艺制备混杂短纤维增强无石棉摩擦材料,通过正交实验优化热压工艺参数。在JF150D定速式摩擦实验机上测试材料的摩擦磨损性能。结果表明：实验制备的混杂短纤维增强无石棉摩擦材料的密度为2.1-2.21 g/cm3,洛氏硬度为62.2-68.0,摩擦过程中摩擦因数在0.37-0.43之间变化,随温度升高先增大后减小,磨损率为0.1-0.54×10 7cm3/（N.m）。制备摩擦材料的最优热压工艺参数是：热压温度为155℃,压力为18 MPa,热压时间为15 min。摩擦材料的摩擦磨损机理以粘着磨损和磨粒磨损为主。
Hybrid short fibers reinforced asbestos-free friction materials were fabricated via hot press forming method and curing heat treatment as 180 ℃＋8 h,and orthogonal test design was used to optimize hot-pressing technique parameters.The wear properties of synthesized friction materials using different press temperature,pressure and time were investigated on the JF150D friction tester.The results show that the density of the synthesized materials is 2.1~2.21 g.cm 3,the Rockwell hardness is 62.2~68.0.During the friction process,the friction coefficient climbs up and then declines.The friction coefficient changes between 0.3 and 0.43,and the wear rate 0.1~0.54×10 7 cm3/N.m.The optimization technique parameters are the press temperature of 155 ℃,the press pressure of 18 MPa,the press time of 15 min.The wear mechanism of synthesized friction gives priority to adhesive wear and abrasive wear.
出处
《粉末冶金材料科学与工程》
EI
北大核心
2012年第5期675-680,共6页
Materials Science and Engineering of Powder Metallurgy
基金
教育部科技重点项目(211137)
广西教育厅重点项目(01202ZD033)
广西教育厅科研项目(200103YB040)
南宁市科技开发计划项目(201106004A)资助
关键词
混杂短纤维
无石棉
工艺参数
摩擦磨损
hybrid short fibers
asbestos-free
technique parameters
wear
