以电潜泵吸入口材料45#钢和316L不锈钢为研究对象，研究了在纯机械冲刷条件下，冲击时间、流速以及冲击角度对冲刷行为的影响规律。结果表明，纯机械冲刷失重速率与材料的硬度成反比，316L不锈钢的硬度高，冲刷失重速率小，45#钢的硬度低，冲刷失重速率大。45#钢和316L不锈钢的冲刷失重速率随着冲击时间的增加，先增加后处趋于稳定，随着流速的增加呈线性增加趋势。当冲击角度为45？时，冲刷失重速率最小；当冲击角度为高于或低于45？时，冲刷失重速率均增加；当冲击角度为0？时的损伤机制为切削；当冲击角度为90？时的损伤机制为犁削。该研究成果为海上油田潜油电泵机组选材提供了理论依据。
45# steel and 316L stainless steel were used as the research object to study the influence law of impact time, flow velocity and impact angle on the scouring behavior under the pure mechanical scouring conditions. The results show that pure mechanical scouring weight loss rate is inversely proportional to the hardness of material. The scouring weight loss rate of 316L stainless steel with high hardness is low, and 45# steel with low hardness is high. The scouring weight loss rate of 45# steel and 316L stainless steel increases first with the increase of impact time initially, and then at the stable wear stage. The scouring weight loss rate shows a linear increase trend with the velocity increase. At 45？ impact angle, the scouring weight loss rate is the smallest, and it increases when the impact angle is higher or lower than 45？. The damage mechanism is cutting at 0？, and when the damage mechanism is plowing at 90？. The study provides a theoretical basis for the selection of offshore oil field electric submersible pump unit and guarantee of its high life operation.
Bjordal, M., Bardal, E., Rogne, T., et al. (1995) Erosion and Corrosion Properties of MC Coatings and Duplex Stainless Steel in Sand-Containing Synthetic Sea Water. Wear, 186-187, 508-514.
https://doi.org/10.1016/0043-1648(95)07148-2
