CAJ | 학술논문

分别在干摩擦和油润滑条件下研究聚甲基丙烯酸甲酯与淬火45#钢配副时,载荷和转速对其摩擦磨损性能的影响,并分析其磨损机制.结果表明,在干摩擦时,聚甲基丙烯酸甲酯高速下的磨损量和接触温度明显高于低速下的磨损量和接触温度,其高速下的摩擦因数低于低速下的摩擦因数,并且随载荷的增大摩擦因数先增大后减小;在油润滑下,聚甲基丙烯酸甲酯高速下的磨损量明显低于低速下的磨损量,高速下的接触温度高于低速下的接触温度,随载荷的增大,高速下的摩擦因数是先减小后增大,低速下的摩擦因素是先减小后增大最后再减小,且高载低速下的摩擦因数高于高载高速下的摩擦因数;在干摩时摩擦面十分粗燥,有明显的沟状磨痕和黏着脱落,而油润滑时摩擦面较为光滑.
분별재간마찰화유윤활조건하연구취갑기병희산갑지여쉬화45#강배부시,재하화전속대기마찰마손성능적영향,병분석기마손궤제.결과표명,재간마찰시,취갑기병희산갑지고속하적마손량화접촉온도명현고우저속하적마손량화접촉온도,기고속하적마찰인수저우저속하적마찰인수,병차수재하적증대마찰인수선증대후감소;재유윤활하,취갑기병희산갑지고속하적마손량명현저우저속하적마손량,고속하적접촉온도고우저속하적접촉온도,수재하적증대,고속하적마찰인수시선감소후증대,저속하적마찰인소시선감소후증대최후재감소,차고재저속하적마찰인수고우고재고속하적마찰인수;재간마시마찰면십분조조,유명현적구상마흔화점착탈락,이유윤활시마찰면교위광활.
@@@@The effects to tribological properties of polymethyl methacrylate against quenching of 45 steel under the con-dition of dry friction and oil lubrication were studied by changing load and speed under sliding friction test,and the wear mechanism was analyzed. The results demonstrate that the wear mass loss and contact temperature of polymethyl methacry-late under high-speed are higher than those under low-speed in dry friction;the friction coefficient of polymethyl methacry-late under high-speed is lower than that under low-speed,and it is all increased first and then decreased under high-speed and low-speed with load increasing. The wear mass loss of polymethyl methacrylate is lower and the contact temperature is higher under high-speed than under low-speed in oil lubrication;the friction coefficient of polymethyl methacrylate is de-creased first and then increased under high-speed,and decreased first and then increased and finally decreased under low-speed with load increasing;the friction coefficient under high-load and low-speed is higher than that under high-load and high-speed. The friction surface is very coarse with obvious groove gringing and adhesion loss in dry friction,but very smooth in oil lubrication.