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以锻钢(SF55)和白合金(WJ2)材料制成的试件模拟轴颈轴承在润滑状态下的滑动磨擦,在磨合结束后,使油温逐渐上升到80℃。对其摩擦过程中产生的磨损粒子用铁粉图和机油光谱分析法进行了分析。所用的机油光谱分析法为电感耦合等离子发光分析法。为提高分析精度,采用酸溶解法进行分析。试验过程中的滑动速度范围为0.68~9.5m/s,接触压力范围为0.54~2.65MPa。试验得出如下结论:(1)光密度、严重磨损指数以及锡元素浓度随摩擦系数(润滑状态)而变。(2)光密度、严重磨损指数和锡元素浓度几乎随垫板磨损量的增加而直线上升。(3)由垫板磨损量预测的锡元素浓度与测定值几乎一致。(4)产生的磨损粒子的形状和尺寸随润滑状态和试验条件而变。
Specimens made of forged steel (SF55) and white metal (WJ2) were used to simulate the sliding friction of the journal bearings in the lubricated state. After the run-in, the oil temperature was gradually raised to 80 ° C. The worn particles produced during the friction process were analyzed by iron powder map and oil spectrum analysis method. The oil spectrum analysis method used is inductively coupled plasma emission spectrometry. In order to improve the accuracy of analysis, acid dissolution method was used for analysis. During the test, the sliding speed ranged from 0.68 to 9.5 m / s and the contact pressure ranged from 0.54 to 2.65 MPa. The test leads to the following conclusions: (1) Optical density, severe wear index and elemental tin concentration vary with friction coefficient (lubrication state). (2) The optical density, severe wear index and tin concentration increased linearly with the increase of wear amount of backing plate. (3) The tin element concentration predicted by the wear amount of the pad is almost the same as the measured value. (4) The resulting wear particles vary in shape and size as lubrication conditions and test conditions.