A comparison of the gas-blast and centrifugal-accelerator erosion testers: The influence of particle dynamics

被引：26
作者：
Deng, T. [1 ]
Bingley, M. S. [1 ]
Bradley, M. S. A. [1 ]
De Silva, S. R. [2 ]
机构：
[1] Univ Greenwich, Medway Sch Engn, Wolfson Ctr Bulk Solids Handling Technol, Chatham ME4 4TB, Kent, England
[2] Telemark Technol Res & Dev Ctr, Dept Power Sci & Technol POSTEC, N-3914 Porsgrunn, Norway
来源：
WEAR | 2008年 / 265卷 / 7-8期
关键词：
gas-blast erosion tester; centrifugal-accelerator erosion tester; solid particle erosion; particle dynamics; modelling;
D O I：
10.1016/j.wear.2008.02.017
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The gas-blast and centrifugal-accelerator testers are the two most commonly used erosion testers. An experimental and analytical study was made of the effect of particle characteristics (size, shape and concentration) on particle dynamics in each of these testers. Analysis showed that in the gas-blast tester both particle velocity and the dispersion angle of the particle jet were relatively sensitive to the particle characteristics. Particle characteristics, within the ranges studied, had little influence in the centrifugal-accelerator tester. Consequently, during an erosion test, the range of particle velocities and dispersion angles in the gas-blast tester is much wider than in the centrifugal-accelerator tester. It was concluded that the centrifugal-accelerator tester gave closer control of the important erosion test parameters and therefore more consistent erosion test measurements. However, one drawback of the centrifugal-accelerator tester is the need to account for erosion effects associated with the impact of rotating particles, an inherent feature of this tester. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：945 / 955
页数：11
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