Dimples shape and distribution effect on characteristics of Stribeck curve
Dimples shape and distribution effect on characteristics of Stribeck curve
复制标题
DOI：
10.1016/j.triboint.2009.06.001
复制
发表时间：
2009-10-01
影响因子：
6.2
通讯作者：
Sep, Jaroslaw
中科院分区：
文献类型：
--
作者：
Galda, Lidia;Pawlus, Pawel;Sep, Jaroslaw
本研究的目的是研究表面纹理的几何特征对润滑滑动中的 Stribeck 曲线的影响。摩擦系统由固定块组成，固定块以所需的 1800 N 恒定负载压靠在以定义速度旋转的环上。测试以 0.08-0.69 m/s 范围内的增加滑动速度进行。每个速度维持2分钟。测试是在保形接触条件下进行的。滑动是单向的。该块是轴承套硬化 EN-GJS 400-15 铸铁的一部分，硬度值为 50 HRC。环样品直径为 35 毫米，由硬度为 32 HRC 的硬化 42CrMo4 钢制成。样本表面的一些变体是通过抛光技术创建的。油穴S的面积密度在7.5-20%的范围内。凹痕深度与长度之比在0.03和0.08之间。对具有短滴、长滴和球形油囊的环表面进行了测试。结果表明，与无纹理表面相比，适当的形状和尺寸以及合适的油囊面积密度可以改善滑动副的摩擦特性。 (C) 2009 Elsevier Ltd. 保留所有权利。
A purpose of this research is to study the influence of geometrical characteristics of the surface texture on the Stribeck curve in lubricating sliding. The tribosystem consists of the stationary block pressed at the required constant load 1800 N against the ring rotating at the defined speeds. Tests were conducted at increasing sliding speed of range 0.08-0.69 m/s. Every speed was maintained for 2 min. The test was carried out under conformal contact conditions. The sliding was unidirectional. The block was a part of a bearing sleeve hardened EN-GJS 400-15 cast iron with a hardness value of 50 HRC. The ring samples, 35 mm in diameter, were made from hardened 42CrMo4 steel of hardness 32 HRC. Some variants of specimen surfaces were created by burnishing technique. The area density of oil pockets S was in the range 7.5-20%. The dimples depth to length ratios were between 0.03 and 0.08. Ring surfaces with oil pockets of short drop, long drop and spherical shapes were tested.It was shown that with proper shape and dimensions as well as suitable area density of oil pockets the friction characteristic of the sliding pairs could be improved in comparison to non-textured surfaces. (C) 2009 Elsevier Ltd. All rights reserved.