流化床埋管的冷态冲击磨损实验研究  

Fluidized Bed Immersed Tube Cooled State Impact Wear and Tear Experimental Researches

作　　者：祝京旭[1] 周玉铭[2] 

机构地区：[1]加拿大西安大略大学 [2]西安交通大学,西安710049

出　　处：《中国锅炉压力容器安全》1998年第3期9-14,共6页China Boiler and Pressure Vessel Safety

摘　　要：本文讨论了自由降落法对黄铜、不锈钢、碳钢等11种不同材料试样的冷态冲击磨损实验研究结果。颗粒对试样的冲击速度控制在2.2m/s至5.0m/s的范围内,大致与实际流化床内固体颗粒对埋管的冲击速度相当。根据实验数据,对试样磨损率与颗粒的冲击速度、角度、球形度及平均直径进行了回归,建立了低速冲击磨损的经验公式。并利用电子显微镜对被磨损试样表面进行了观察,探讨了低速磨损的机理。Particles were dropped onto target specimens of 11 different materials. The impact velocity were the range of 2. 2~5.0m/s. Erosion rates were correlated as a function of impact velocity .angle and particle properties. Acording to the analysis of micrographies taken by scanning electron microscope,the mechanism of low velocity impact erosion on tubes in fluidized beds was discussed in this paper.

关 键 词：流化床 埋管 磨损 冲击磨损 

分 类 号：TQ051.13[化学工程]