机械装备中边界润滑摩擦系数的计算

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The calculation method of boundary lubrication of a mechanical equipment has carried on the revision, which can be calculated under different roughness coefficient of boundary lubrication. Using self-made pin - disk friction test-bed, pin used Q235 steel plate, using petroleum ether dissolved in the stearic acid as lubricant, the surface roughness of the steel plate have two kinds, Ra 0.2 tr m and 0.4 p~ m, respectively. For theoretical calculation of the data were compared with experimental data, the results show that the alignment is higher, the largest deviation less than 5%. Therefore, the calculation method can be used to predict the friction coefficient of boundary lubrication in the machinery and equipment.对一种机械装备边界润滑的计算方法进行了修订，从而可以计算出不同粗糙度下的边界润滑系数。利用自制的销一盘摩擦试验台，销盘均使用Q235钢制成，使用溶解在石油醚中的硬脂酸作为润滑剂，铜盘的表面相糙度有两种，Ra分别为0．2μm和0．4μm。对理论计算数据和试验数据进行对比，结果表明，二者吻合度较高，最大偏差不超过5％．因此，该计算方法可以用于预测机械装备中边界润滑的摩擦系数。