Wear-in behaviour of polycrystalline diamond thrust bearings

被引：31

作者：

Knuteson, C. W. ^{[1
]}

Sexton, T. N. ^{[1
]}

Cooley, C. H. ^{[1
]}

机构：

[1] US Synthet Corp, Orem, UT 84058 USA

来源：

WEAR | 2011年 / 271卷 / 9-10期

关键词：

Polycrystalline diamond; PCD; Hydrodynamic; Wear-in; Thrust bearings; Fluid-film;

D O I：

10.1016/j.wear.2010.12.059

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Polycrystalline diamond (PCD) bearings are designed for use in harsh environments, including process-fluid-lubricated applications such as those in oil and gas drilling turbines. This paper discusses the wear-in behaviour of polycrystalline diamond thrust bearings. Laboratory test results are presented that show the roughness, profile, and coefficient of friction of the polycrystalline diamond wear pads as the wear-in of the polycrystalline diamond bearings progresses. Laboratory test results show a significant decrease in the surface roughness and a change in the profile of the wear pads. Measured values of the coefficients of friction reveal that the lubrication regime of PCD thrust bearings can move from boundary to mixed-mode and may even become hydrodynamic after wearing-in for a period of time under the right conditions. This mechanism can provide extended life for PCD thrust bearings in harsh environments. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2106 / 2110

页数：5

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