评价润滑脂的新方法

来源期刊：中南大学学报(自然科学版)1985年第2期

论文作者：蒋建纯 斯皮格尔 霍兰特 诺阿克

文章页码：91 - 98

关键词：润滑脂润滑； 表观粘度； 剪切梯度； 滑动轴承； 新方法； 旋转式粘度计； 流动特性； 流动曲线； 数学模型； 屈服极限

摘    要：用旋转式粘度计对润滑脂进行试验研究表明:它的流动性能类似于宾汉塑性体,可用数学模型τ=τ₀+η·D描述;即剪应力由两部分组成:屈服极限和粘度效应。此外,受剪区的塑性润滑膜可以采用牛顿流体润滑膜中使用的计算方法,但需引入表观粘度η^*的概念,τ=η^*D。研究结果为正确设计及选用润滑脂、润滑脂润滑系统,特别是为脂润滑的滑动轴承的设计、计算提供了依据。

Abstract: The results of the investigation with rotary viscumeter indicated that the behavior of the grease was generally similar to that of Bingham plastic. The flow behaviour is described by mathematical model τ=τ₀+η.D, which consists of a viscus effect plus an initial yield condition. The Sheared regions of a plastic lubricant film can be calculated in a similar manner to a fluid lubricant film of equivalent viscosity τ=η^*D. The results indicate that the correct design and selection of grease and grease lubricant system are the most important factors and provide basis in particular, for the design and calculation of slides bearings lubricated with grease.