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[目的]采用皮秒激光在20CrMnTi表面构建具有椭圆轮廓的双层织构，以减少唇形旋转油封中橡胶材料的磨损。[方法]研究了油润滑工况下双层织构的结构参数(包括面积率、织构总深度、上层织构深度)对20CrMnTi-丁腈橡胶摩擦副摩擦学性能的影响。[结果]当织构面积率为3%、总深度为25μm、上层深度为8μm时，20CrMnTi-丁腈橡胶摩擦副摩擦因数为0.08，丁腈橡胶的体积磨损率为1.2×10-3mm3(N·m)，分别比无织构表面低38%和84%。[结论]双层椭圆织构通过优化流体动压润滑与接触压力分布，显著改善了摩擦副的摩擦学性能，为旋转油封的耐磨设计提供了有效解决方案。
Abstract：[Objective] A double-layer elliptical texture was fabricated on 20CrMnTi surfaces using a picosecond laser to reduce wear in the rubber material of lip-type rotary oil seals. [Method] The influence of structural parameters(i.e.area ratio, total texture depth, and upper-layer texture depth) on the tribological properties of 20CrMnTi–nitrile rubber(NBR) friction pair under oil-lubricated conditions was studied. [Result] When the texture area ratio was 3%, total depth was 25 μm, and upper-layer depth was 8 μm, the friction coefficient of the 20CrMnTi–NBR friction pair reached 0.08,and the volume wear rate of NBR was 1.2 × 10-3 mm3(N·m), representing reductions of 38% and 84%, respectively,compared to non-textured surfaces. [Conclusion] The double-layer elliptical texture significantly improves the tribological properties of the friction pair by optimizing hydrodynamic lubrication and contact pressure distribution,providing an effective solution for wear-resistant design in rotary oil seals.
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基本信息:
DOI：10.19289/j.1004-227x.2025.06.004
中图分类号:TQ333.7;TB42
引用信息:
[1]郑善照,孙天启,姚金阳等.双层织构对20CrMnTi-丁腈橡胶摩擦副摩擦学性能的影响[J].电镀与涂饰,2025,44(06):23-29.DOI:10.19289/j.1004-227x.2025.06.004.
基金信息: