凹槽型织构对钻头滑动轴承表面摩擦学性能影响分析

何霞; 杜文鑫; 王国荣; 李梦媛; 钟林; 廖代胜

doi:10.13433/j.cnki.1003-8728.20200017

凹槽型织构对钻头滑动轴承表面摩擦学性能影响分析

doi: 10.13433/j.cnki.1003-8728.20200017

西南石油大学机电工程学院, 成都 610500

基金项目:

国家自然科学基金项目 51775463

详细信息

作者简介:
何霞(1977-), 副教授, 硕士生导师, 研究方向为石油机械和流体机械, hexia@swpu.edu.cn

通讯作者:
王国荣, 教授, swpi2002@163.com

中图分类号: TG156
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- 文章访问数: 113
- HTML全文浏览量: 67
- PDF下载量: 24
- 被引次数: 0
出版历程
- 收稿日期: 2019-09-24
- 刊出日期: 2021-01-01

Effects of Groove Texture on Tribological Performance of Sliding Bearing Surface of Drill Bit

School of Mechanical Engineering, Southwest Petroleum University, Chengdu 610500, China

摘要

摘要: 基于雷诺方程建立表面织构化滑动轴承润滑理论模型，探究不同织构参数(分布角度、深度、面积比、偏斜角度、长度)对钻头滑动轴承承载力和摩擦因数的影响规律。在油膜收敛和最小油膜厚度附近区域布置织构，有利于增加轴承表面润滑性能，而织构布置在油膜发散处反而会减小轴承承载力，增大摩擦因数。织构的最佳织构深度与轴承的工况相关，不同偏心率条件下最优织构深度不同，轴承所承载的载荷越大，凹槽型织构化轴承的最佳织构深度越深；摩擦因数随织构面积比的增加先增大后减小，当面积比为18%时，摩擦因数最小。织构深度对织构偏斜角度的影响较小，轴承摩擦因数随偏斜角度的增加逐渐减小；织构长度为轴承宽度的1/2时，轴承润滑效果最佳。
- 表面织构 /
- 钻头 /
- 润滑减磨 /
- 表面磨损 /
- 摩擦因数
Abstract: Based on Reynolds equation, a theoretical lubrication model of surface textured sliding bearings is established, and the effects of different texture parameters (distribution angle, depth, area ratio, deflection angle, length) on bearing capacity and friction coefficient of bit sliding bearings are investigated. Arrangement of texture near the convergence of oil film and the minimum oil film thickness is beneficial to increase the lubrication performance of the bearing surface, while arrangement of texture at the divergence of oil film will reduce the bearing capacity and increase the friction coefficient. The optimum texture depth is related to the working conditions of the bearing. Under different eccentricity conditions, the greater the load the bearing bears, the deeper the optimum texture depth of the grooved textured bearing. The friction coefficient increases first and then decreases with the increase of texture area ratio, and the friction coefficient is the smallest when the area ratio is 18%. The effect of texture depth on texture deflection angle is small, and the friction coefficient of bearing decreases with the increase of deflection angle. When the texture length is 1/2 of the width of bearing, the lubrication effect of bearing is the best.
- surface texture /
- drill bit /
- lubrication and anti-wear /
- surface wear /
- friction coefficient

HTML全文

图 1 织构化钻头滑动轴承几何模型

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图 2 凹槽型织构化钻头滑动轴承笛卡尔坐标系中展开图

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图 3 凹槽型织构截面图

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图 4 织构角度分布对钻头滑动轴承承载力的影响

下载: 全尺寸图片幻灯片

图 5 织构角度分布对钻头滑动轴承摩擦因数的影响

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图 6 织构深度对钻头滑动轴承润滑性能的影响

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图 7 织构面积比对钻头滑动轴承润滑性能的影响

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图 8 织构偏斜角度对钻头滑动轴承润滑性能的影响

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图 9 织构长度对钻头滑动轴承润滑性能的影响

下载: 全尺寸图片幻灯片

表 1 钻头径向轴承几何参数

轴承直径／mm	轴颈直径／mm	轴承宽度／mm	轴承偏位角／(°)	轴承离心率
52.171 6	52	18	40	0.4~0.8

下载: 导出CSV

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