Purpose

This paper aims to study line-contact elastohydrodynamic grease lubrication properties of surface-textured rollers as well as the effect of different crown widths (dw) on oil film thickness under textured conditions.

Design/methodology/approach

The laser processing method was used to make the micro-texture on the surface of GCr15 steel rollers; lithium grease was used as the lubricant, and line-contact elastohydrodynamic grease lubrication experiments under pure sliding conditions were performed on light interference elastohydrodynamic-lubricated experimental table.

Findings

The results show that the line-contact elastohydrodynamic grease lubrication is closely related to the textured crown width of steel rollers. At low speeds and light loads, texturing has an inevitable inhibitory effect on the formation of the lubricating oil film, and the smaller the width of the crown area, the more obvious the inhibitory effect, which is not conducive to the improvement of the lubrication condition. At high speeds and high loads, the textured roller with dw = 1 mm has the largest oil film thickness and shows better lubrication performance.

Originality/value

At present, there is little research on the surface texture of line-contact friction pairs. This work explores the effect of different textured crown width on the lubricating properties of line-contact elastohydrodynamic grease lubrication by experiment. It provides a new theoretical basis for the subsequent practical application of surface texture technology.

中文翻译：

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表面织纹辊的线接触弹性流体动力油脂润滑性能试验研究

目的

本文旨在研究表面纹理化辊的线接触式弹性流体动力润滑脂润滑性能，以及在纹理化条件下不同冠宽（dw）对油膜厚度的影响。

设计/方法/方法

使用激光加工方法在GCr15钢辊表面制作了微纹理；以锂基润滑脂为润滑剂，在光干涉弹性流体动力润滑实验台上进行了纯滑动条件下线接触弹性流体动力润滑脂的润滑实验。

发现

结果表明，线接触式弹性流体动力润滑脂与钢辊的凸纹宽度密切相关。在低速和轻载下，纹理化对润滑油膜的形成具有不可避免的抑制作用，胎冠区域的宽度越小，抑制作用越明显，不利于润滑条件的改善。 。在高速和高负载下，dw = 1 mm的纹理辊具有最大的油膜厚度，并显示出更好的润滑性能。

创意/价值

目前，关于线接触摩擦副的表面纹理的研究很少。这项工作通过实验探索了不同纹理冠宽对线接触弹性流体动力润滑脂润滑性能的影响。它为表面纹理技术的后续实际应用提供了新的理论基础。