离心机过流件常用材料的冲蚀磨损研究

利用喷砂机对离心机过流件常用的Q235A，Cr12Mov，ZG310-570和Q345A 进行冲蚀磨损试验，探讨它们的冲蚀磨损特性。结果表明：材料的硬度越高，其质量损失率越低，抗冲蚀磨损性能越强，4种材料的抗冲蚀磨损性能由高到低的顺序依次是Q345A，ZG310-570，Cr12Mov，Q235A；随着冲蚀角度的增大，质量损失率呈现先增大后减小的变化趋势，其中冲蚀角为30°时的质量损失率最大；在小角度冲蚀下，材料的磨损机理主要表现为微观切削，而大角度冲蚀下的磨损机理则主要表现为反复塑性变形导致的疲劳断裂。

Study on Erosion Wear of Metal Materials Used for Centrifuge Transflux Parts

The erosive wear experiments on materials of Q235, Cr12Mov, ZG310-570 and Q345A commonly used for centrifuge transflux parts were conducted with sandblasting machine, and their erosive wear characteristics were studied. Results show that the erosive wear resistance increases with the hardness of the material while the mass loss rate decreases. On the same experiment condition, the erosive wear resistance of materials from high to low is as below: Q345A, ZG310-570, Cr12Mov and Q235A. The mass loss rate of the experimental materials firstly increases and then decreases with the increase of impact angle, and it is up to the maximum at the impact angle of 30°. The erosive wear mechanism of experiment materials mainly appears micro cutting under the condition of low angle impact, while exhibits repeated plastic deformation resulting in fatigue fracture under the condition of high angle impact.