A comparison of the gas-blast and centrifugal-accelerator erosion testers: The influence of particle dynamics
A comparison of the gas-blast and centrifugal-accelerator erosion testers: The influence of particle dynamics
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DOI：
10.1016/j.wear.2008.02.017
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发表时间：
2008-09
期刊：
影响因子：
5
通讯作者：
T. Deng;M. Bingley;M. Bradley;S. R. D. Silva
中科院分区：
文献类型：
--
作者：
T. Deng;M. Bingley;M. Bradley;S. R. D. Silva
气体冲击和离心加速试验机是两种最常用的腐蚀试验机。实验和分析研究的效果，颗粒特性（大小，形状和浓度）对颗粒动力学在这些测试仪。分析表明，在气爆试验机中，颗粒速度和颗粒射流的分散角对颗粒特性都比较敏感。颗粒特性，在研究的范围内，在离心加速器测试仪的影响很小。因此，在侵蚀试验期间，在喷气试验机中的颗粒速度和分散角的范围比在离心加速器试验机中宽得多。得出的结论是，离心加速器试验机提供了更密切的控制的重要侵蚀试验参数，因此更一致的侵蚀试验测量。然而，离心加速器试验机的一个缺点是需要考虑与旋转颗粒的冲击相关的侵蚀效应，这是该试验机的固有特征。
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.