【摘要】 为研究登月车轴承内部摩擦磨损机理,研制了真空球盘式摩擦磨损试验机,并在常压和真空(真空度为6×10^-3Pa)条件下试验研究了GCr15钢球/GCr15钢盘配副的摩擦磨损性能。结果表明:真空条件下摩擦面之间的高温使得试件剪切强度和粘着力降低,从而摩擦系数低于常压下。而真空条件下配副更易发生粘着,产生的磨屑更多,磨损量更大。更多还原

【Abstract】 A ball-to-disk vacuum tester was manufactured to study the tribological mechanism of bearings applied on moon undercarriage. The friction and wear properties of GCrl5/GCrl5 pairs are studied on the tester under normal barometric and vacuum (6×10-3 Pa) conditions. The results show that the friction coefficient under vacuum condition is lower than that of the normal barometric for the shearing intension of specimens is reduced by high temperature between the friction surfaces. The specimens under vacuum condition are easier to adhere, so the wear is higher than that of the normal barometric.更多还原