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齿面微织构面积率及形状对其摩擦性能的基础研究
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国家自然科学基金项目(51665056)


Research on the Micro-texture Shape and Area Ratio of Tooth Surface on Its Friction Performance
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    摘要:

    为研究齿面微织构面积率和形状对齿轮副摩擦学性能的影响,采用激光打标机在经热处理后的45钢试件表面加工出不同形状和面积率的织构,利用往复式摩擦磨损试验机分析织构面积率和形状对摩擦因数的影响规律,并与Fluent仿真结果进行对比。仿真结果表明:随着织构面积率的增大,摩擦因数逐渐减小,油膜承载力和油膜刚度逐渐增大,长方形织构具有更佳的减摩性能。试验结果与仿真结果基本一致,与无织构表面相比,长方形织构面积率为17%时平均摩擦因数降低了18.06%,正方形和圆形织构面积率为4.7%时,不仅没有减摩,反而将摩擦因数分别增大了4.17%和1.39%。织构化表面可提高油膜承载力和刚度,使油膜不易破裂,减小了摩擦副之间的接触,降低了摩擦因数。获得了微织构形状和面积率对齿轮副摩擦性能的影响规律,为改善齿轮系统的寿命提供试验支持。

    Abstract:

    In order to study the effect of area ratio and shape of microtexture on friction performance of gear pair,the textures with different shapes and area ratios were processed on the surface of the 45 steel specimen after heat treatment by the laser marking machine.The effect of texture area ratio and shape on friction coefficient was analyzed by using reciprocating friction and wear tester,and the results were compared with those of the Fluent simulation analysis.The simulation results show that as the texture area ratio increases,the friction coefficient decreases,the oil film bearing capacity and oil film stiffness increase,and the rectangular texture has better friction reduction performance.The experimental results are consistent with the simulation results.Compared with the untextured surface,when the area ratio of rectangular texture is 17%,the average friction coefficient decreases by 18.06%,and the friction coefficient increases by 4.17% and 1.39% respectively when the square and circular texture area is 4. 7%.Textured surface can improve oil film stiffness and bearing capacity,make the oil film not easy to break,reduce the direct contact between the friction pairs and reduce the friction coefficient.The influence of microstructure shape and area ratio on the friction performance of gear pair is obtained,which provides experimental support for improving the life of gear system.

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冯永龙,阿达依·谢尔亚孜旦,卞传星.齿面微织构面积率及形状对其摩擦性能的基础研究[J].机床与液压,2023,51(3):91-95.
FENG Yonglong, ADAYI·Xieeryazidan, BIAN Chuanxing. Research on the Micro-texture Shape and Area Ratio of Tooth Surface on Its Friction Performance[J]. Machine Tool & Hydraulics,2023,51(3):91-95

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  • 在线发布日期: 2023-03-02
  • 出版日期: 2023-02-15