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为了研究轴表面形貌对径向唇形密封泵吸作用及摩擦特性的影响,利用Nd:YAG固体脉冲激光对旋转轴表面进行微凹坑织构化处理,在油封密封试验机上,针对不同转速、不同表面形貌等工况,完成了一系列对比试验,获取了试验过程中的泵吸量、摩擦力以及密封圈温升等参数.并通过扫描电镜对试验后各密封唇表面进行了分析.结果表明:三角形微凹坑顶点朝向油液侧的表面能够增强泵吸作用,且转速对泵吸率影响很大,而其他形状和参数的微凹坑表面不利于泵吸作用的产生;与未织构面相比,圆形凹坑面积占有率为7%和21%的表面具有良好的减摩效果,三角形凹坑顶点沿周向的两表面间减摩效果较好.
In order to study the influence of the axial surface morphology on the radial lip seal pumping and frictional characteristics, the surface of the rotating shaft was treated by micro-pitting using the Nd: YAG solid-state pulsed laser. On the oil seal sealing machine, , Different surface topography and other conditions, a series of comparative tests were completed to obtain the parameters of pump suction, friction and temperature rise during the test, and the surface of each sealing lip was analyzed by scanning electron microscopy The results show that: the apex of triangular micro pits toward the oil side of the surface can enhance the pumping effect, and the rotational speed of the pumping rate greatly affected, while other shapes and parameters of the micro-pit surface is not conducive to the pumping effect; Compared with the un-textured surface, the surface area of 7% and 21% of the circular dimple area has a good anti-friction effect, and the anti-friction effect between the two surfaces of the triangle dimple apex in the circumferential direction is better.