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多孔CBN/Cu-Sn-Zn堆积磨料在钢轨打磨砂轮中的应用

姚煜 刘鹏展 邹文俊 彭进 简亚溜 韩平

姚煜, 刘鹏展, 邹文俊, 彭进, 简亚溜, 韩平. 多孔CBN/Cu-Sn-Zn堆积磨料在钢轨打磨砂轮中的应用[J]. 金刚石与磨料磨具工程, 2022, 42(1): 69-75. doi: 10.13394/j.cnki.jgszz.2021.0105
引用本文: 姚煜, 刘鹏展, 邹文俊, 彭进, 简亚溜, 韩平. 多孔CBN/Cu-Sn-Zn堆积磨料在钢轨打磨砂轮中的应用[J]. 金刚石与磨料磨具工程, 2022, 42(1): 69-75. doi: 10.13394/j.cnki.jgszz.2021.0105
YAO Yu, LIU Pengzhan, ZOU Wenjun, PENG Jin, JIAN Yaliu, HAN Ping. Application of porous CBN/Cu-Sn-Zn agglomerated abrasive in rail grinding wheel[J]. Diamond &Abrasives Engineering, 2022, 42(1): 69-75. doi: 10.13394/j.cnki.jgszz.2021.0105
Citation: YAO Yu, LIU Pengzhan, ZOU Wenjun, PENG Jin, JIAN Yaliu, HAN Ping. Application of porous CBN/Cu-Sn-Zn agglomerated abrasive in rail grinding wheel[J]. Diamond &Abrasives Engineering, 2022, 42(1): 69-75. doi: 10.13394/j.cnki.jgszz.2021.0105

多孔CBN/Cu-Sn-Zn堆积磨料在钢轨打磨砂轮中的应用

doi: 10.13394/j.cnki.jgszz.2021.0105
详细信息
    通讯作者:

    邹文俊,男,1961年生,教授、博士生导师。研究方向:高温树脂及树脂磨具制备。E-mail: wenjun_zou@haut.edu.cn

  • 中图分类号: TG73; TG58

Application of porous CBN/Cu-Sn-Zn agglomerated abrasive in rail grinding wheel

  • 摘要: 为提高钢轨打磨砂轮的磨削效率和使用寿命,制备一种表面多孔但内部紧实的CBN/Cu-Sn-Zn堆积磨料。讨论Cu-Sn-Zn结合剂的性能、孔隙结构对CBN堆积磨料的影响以及堆积磨料对砂轮结构强度的影响,并通过钢轨被动打磨试验,对堆积磨料添加前后砂轮的磨削效果进行评价。试验结果表明:最佳的多孔CBN堆积磨料试样弯曲强度为78.5 MPa,抗冲击强度为5.5 kJ/m2,表面孔隙率在30%~40%。磨料的复合使用可以有效地结合CBN高硬度与锆刚玉良好的冲击韧性的特点,添加体积分数为20%的堆积磨料提高钢轨打磨砂轮的打磨效率及打磨质量。

     

  • 图  1  多孔堆积磨料制备工艺流程

    Figure  1.  Process flow chart of porous stacked abrasive preparation

    图  2  钢轨打磨试验平台

    Figure  2.  Rail grinding experiment platform

    图  3  Zn质量分数对Cu-Sn结合剂力学性能的影响

    Figure  3.  Effect of Zn mass fraction on mechanical properties of Cu-Sn bond

    图  4  Zn质量分数对Cu-Sn结合剂硬度的影响

    Figure  4.  Effect of Zn mass fraction on hardness of Cu-Sn bond

    图  5  不同体积分数的造孔剂堆积磨料宏观形貌

    Figure  5.  Macro-morphologies of agglomerated abrasive with different volume concentrations of pore forming agent

    图  6  不同造孔剂体积分数下堆积磨料微观结构

    Figure  6.  Microstructures of agglomerated abrasive with different volume concentrations of pore forming agent

    图  7  造孔剂体积分数对堆积磨料试样力学性能的影响

    Figure  7.  Effect of pore forming agent volume concentrations on mechanical properties of agglomerated abrasive

    图  8  多孔CBN堆积磨料形貌

    Figure  8.  Porous CBN stacked abrasive morphology

    图  9  堆积磨料添加前后砂轮试样力学性能

    Figure  9.  Before and after adding agglomerated abrasive

    图  10  堆积磨料添加前后砂轮磨削效率和磨削比

    Figure  10.  Grinding efficiency and grinding ratio of grinding wheel

    图  11  钢轨打磨前后表面粗糙度

    Figure  11.  Surface roughness of rail before and after grinding

    图  12  磨削后砂轮中堆积磨料表面形貌

    Figure  12.  Surface morphology after grinding of agglomerated abrasive in grinding wheel

    表  1  打磨的钢轨工件元素成分

    Table  1.   Element compositions of the ground rail workpiece

    元素质量分数 ω / %
    C 0.650~0.760
    Si 0.150~0.580
    Mn 0.700~1.200
    P ≤ 0.035
    S ≤ 0.030
    V 0.030
    Nb ≤ 0.010
    Fe 余量
    下载: 导出CSV
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出版历程
  • 录用日期:  2021-10-12
  • 收稿日期:  2021-06-08
  • 修回日期:  2021-09-17
  • 网络出版日期:  2022-03-17

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