摘要
基于HSR-2M高速往复摩擦磨损试验机,试验研究在永磁体磁场条件下,法向载荷、往复速度等参数对钢轨材料摩擦性能的影响,通过磨痕形貌分析其磨损机制,并与无磁场条件下的结果进行对比。试验结果表明:磁场的引入可以在一定程度上减小钢轨材料的摩擦因数、磨损率;增大滑动速度对摩擦因数和磨损率均有减小作用,增大载荷能够降低摩擦因数,但磨损率增加;磁场能够提高钢轨材料在摩擦过程中的磨损性能。无磁场时,钢轨材料磨损形式为典型的磨粒磨损,摩擦系统的磨损率和摩擦因数较大;有磁场时,磨损形式主要为黏着磨损,摩擦因数和磨损率较小。
Based on HSR-2M high-speed reciprocating friction and wear tester,the effect of normal force,reciprocating velocity and other parameter on friction and wear properties of steel rail materials were studied. By analyzing wear scar morphology,the wear mechanism was studied and the results with and without magnetic field were compared. The results show that the magnetic field can reduce the friction coefficient and wear rate of steel rail materials. With the increasing of sliding velocity,the friction coefficient and wear rate of steel rail materials are reduced. With the increasing of normal force,the friction coefficient of steel rail materials is reduced,but the wear rate is increased. Magnetic field can improve the friction and wear properties of steel rail materials. Without magnetic field,the wear of steel rail materials is typical abrasive wear,the worn surface has obvious furrows,and the wear tests have larger wear rate and friction coefficient. When a magnetic field is applied,the wear mechanism is mainly adhesive wear,and the friction coefficient and the wear rate are small.
出处
《润滑与密封》
CAS
CSCD
北大核心
2017年第2期56-60,共5页
Lubrication Engineering
基金
教育部“春晖计划”合作科研项目(Z2016132)
国家人社部留学回国人员科技活动择优资助项目(2013年)
四川省教育厅重点科研项目(13ZA0021)
四川省教育厅省级大学生创新创业训练计划项目(201510623064)
西华大学省部级学科平台制造与自动化重点实验室(重点研究基地)开放课题(szjj2015-081)
流体及动力机械教育部重点实验室研究基金(西华大学JYBFX-YQ-1)
关键词
磁场
钢轨
摩擦磨损
法向载荷
往复速度
magnetic field
rail
friction and wear
normal force
reciprocating velocity
