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
收藏
页码：2106 / 2110
页数：5
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