REN Xiao-yan1, REN Ji-ping1, ZHANG Guo-wei1, XU Hong1, WEN Li-ming2, SUN Gang3
（1. School of Materials Science and Engineering, North University of China, Taiyuan 030051, China；2. Taiyuan Iron and Steel Co., Ltd, Taiyuan 030003, China； 3. Engineering and Training Center, North University of China, Taiyuan 030051, China）
Abstract： Piston pump rotor is one of the indispensable parts of hydraulic machinery, whose performance and quality determine the drive efficiency and service life of the piston pump. This paper mainly studies the effect of rare-earth yttrium (Y) on the microstructure and properties of the wear layer in piston pump rotor. The material of the wear layer is composed of lead-tin bronze. By adding different contents of rare earth Y, observe the change of microstructure and properties of lead-tin bronze. Through comparison, the addition of rare-earth Y can improve the tensile strength and elongation of lead-tin bronze, and the organization of lead particle morphology has become much smaller and uniformer than that without rare-earth. However, if the amount of rare-earth is too high, the tensile strength and elongation decrease, and the lead particles in the organization also have the tendency to grow up. Finally, it is concluded that when the amount of rare earth is 0.04%, the comprehensive performance is the best.
Key words： lead-tin bronze； rare-earth yttrium (Y)； piston pump rotor； hydraulic machinery
CLD number： TG146 Document code： A
Article ID： 1674-8042（2018）01-0084-04 doi： 10.3969/j.issn.1674-8042.2018.01.012
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稀土钇的添加对铅锡青铜组织性能的影响
任晓燕1， 任霁萍1， 张国伟1， 徐 宏1， 温黎明2， 孙 刚3
（1. 中北大学 材料科学与工程学院， 山西 太原 030051； 2. 太原钢铁有限公司， 山西 太原 030003；3. 中北大学 工程训练中心， 山西 太原 030051）
摘 要: 柱塞泵转子是液压机械中不可或缺的重要零件之一， 其性能和质量决定了柱塞泵的传动效率和使用寿命。 本文主要研究稀土钇对柱塞泵转子中的耐磨层的组织和性能的影响， 耐磨层的材质是由铅锡青铜组成， 通过加入不同含量的稀土钇， 观察铅锡青铜组织和性能的变化. 通过对比得出， 稀土钇的添加对铅锡青铜的抗拉强度和延伸率都能有所提高， 而且组织中铅颗粒形态也比不加稀土时更加细小、 均匀。 但是， 加入量过高， 抗拉强度和延伸率反而有所下降， 组织中的铅颗粒也有长大的趋势. 最后得出稀土的最佳添加量为 0.04%时， 其综合性能最好。
关键词: 铅锡青铜； 稀土钇； 柱塞泵转子； 液压机械
引用格式： REN Xiao-yan, REN Ji-ping, ZHANG Guo-wei, et al. Effects of rare-earth Y addition on microstructure and mechanical properties of lead-tin bronze. Journal of Measurement Science and Instrumentation, 2018, 9(1)： 84-87. ［doi： 10.3969／j.issn.1674-8042.2018.01.012］
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