Page 47 - 《摩擦学学报》2021年第5期

第 41 卷 第 5 期 摩 擦 学 学 报 Vol 41 No 5
2021 年 9 月 Tribology Sept, 2021

DOI: 10.16078/j.tribology.2020158

齿轮传动微点蚀与热胶合竞争性

失效机制研究

1
1*
1
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李纪强 , 朱博强 , 刘忠明 , 师陆冰 , 裴 帮 , 苗圩巍 1
(1. 郑州机械研究所有限公司, 河南 郑州 450052;
2. 中国航空发动机集团航空发动机动力传输重点实验室, 辽宁 沈阳 110000)
摘 要: 基于工程应用中微点蚀与热胶合随机发生现象，阐述了两种失效模式的损伤机理，分析了两者发生模式转
变的关联规律，并提出了大扭矩宽速域传动齿轮微点蚀与热胶合竞争性失效机制的理念；在润滑油膜厚度和瞬时啮
合温度计算方法的基础之上，建立了两者强度校核的统一评价准则，并基于试验测试，验证了本文中所采用技术原
理的合理性与正确性，最终确定了18CrNiMo7-6与普通矿物油组合的抗微点蚀与抗胶合承载能力关联校核方法；同
时，结合计算分析与试验测试，给出了热胶合发生的极限啮合温度，并通过油膜厚度和表面粗糙度的比较，推荐了
微点蚀设计合理的最小安全系数. 基于本文所得结论，希望能为高功率密度、宽旋转速域齿轮传动的设计提供一种
分析方法.
关键词: 齿轮传动; 微点蚀; 热胶合; 润滑; 失效模式
中图分类号: TH117.1 文献标志码: A 文章编号: 1004-0595(2021)05–0636–11

Competitive Failure Mechanism of Micro-Pitting and

Thermal-Scuffing in Gear Transmission

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LI Jiqiang , ZHU Boqiang , LIU Zhongming , SHI Lubing , PEI Bang , MIAO Weiwei
(1. Zhengzhou Research Institute of Mechanical Engineering Co, Ltd, Henan Zhengzhou 450052, China
2. Key Laboratory of Power Transmission Technology on Aero-engine of Aero Engine Corporation of China,
Liaoning Shenyang 110000, China)
Abstract: Based on the random occurrences of micro-pitting and thermal-scuffing in the engineering application, the
damage mechanisms of these two failure modes and the laws related to their transition were analyzed in this study. A
concept of the competitive mechanism between micro-pitting and thermal-scuffing failure of the high-torque and wide-
speed-range gears was proposed. On the basis of the numerical methods of calculating the film thickness and flash
temperature on the meshing faces, a combined evaluation criterion of strength check was established, and its rationality
and validity was indicated by the experimental results. Finally, the bearing capacity of 18CrNiMo7-6 and plain mineral
oil against scuffing and pitting damage was determined. Meanwhile, in the combination of numerical calculation and
experimental tests, the ultimate contact temperature of thermal-scuffing was put out. The minimum safety factor in the
design of anti-pitting was also proposed through the comparison of oil film thickness and surface roughness. Based on
the conclusions, it is hoped to provide an analysis method for the designing of gears with high power density and wide
rotation speed range.
Key words: gears; micro-pitting; thermal-scuffing; lubrication; failure mode

Received 21 July 2020, revised 27 November 2020, accepted 7 December 2020, available online 28 September 2021.
*Corresponding author. E-mail: Jiqiangli2008@163.com, Tel: +86-13837172773.
The project was supported by the National Natural Science Foundation of China (51775516).
国家自然科学基金项目(51775516)资助.