清淤用泥浆泵轮叶片的冲蚀磨损形貌分析

对一个实际清淤中磨损失效的泥浆泵轮叶片表面进行宏观观察,并利用扫描电镜作了微观形貌分析.研究了过流条件与泵轮叶片表面冲蚀磨损的关系.分析了材料的微观组织结构对材料表面的冲蚀磨损形貌、磨损机理的影响作用.对清淤设备的研究、设计和抗磨材料的研究、选用有重要的参考意义.

Abrasive Erosion Pattern Analysis for Impeller Blades of a Slurry Pump Used in Sand Dredging

The abrasive erosion pattern of the impeller blades of a used slurry pump is investigated by macro observation, and analyzed by SEM method. The relation between the flow conditions and material surface abrasive erosion of the pump impeller has been studied. It is noted that the microstructure of the blade material much affects the abrasive erosion pattern and erosive wear mechanism. The results obtained in the present research provide valuable references to these further works such as the development of sand dredging equipments and materials, anti-erosion design, and etc.