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不同造孔剂树脂金刚石砂轮对硬质合金球阀的精密研磨

朱延鑫 赵峰

朱延鑫, 赵峰. 不同造孔剂树脂金刚石砂轮对硬质合金球阀的精密研磨[J]. 金刚石与磨料磨具工程, 2024, 44(2): 199-205. doi: 10.13394/j.cnki.jgszz.2023.0116
引用本文: 朱延鑫, 赵峰. 不同造孔剂树脂金刚石砂轮对硬质合金球阀的精密研磨[J]. 金刚石与磨料磨具工程, 2024, 44(2): 199-205. doi: 10.13394/j.cnki.jgszz.2023.0116
ZHU Yanxin, ZHAO Feng. Precision grinding of cemented carbide ball valves by resin diamond wheels with different pore-forming agents[J]. Diamond & Abrasives Engineering, 2024, 44(2): 199-205. doi: 10.13394/j.cnki.jgszz.2023.0116
Citation: ZHU Yanxin, ZHAO Feng. Precision grinding of cemented carbide ball valves by resin diamond wheels with different pore-forming agents[J]. Diamond & Abrasives Engineering, 2024, 44(2): 199-205. doi: 10.13394/j.cnki.jgszz.2023.0116

不同造孔剂树脂金刚石砂轮对硬质合金球阀的精密研磨

doi: 10.13394/j.cnki.jgszz.2023.0116
详细信息
    作者简介:

    朱延鑫,男,1988年生,研究生、工程师。主要研究方向:阀门产品研发、工艺研究。E-mail:provalves@163.com

  • 中图分类号: TG74; TG58; TQ164

Precision grinding of cemented carbide ball valves by resin diamond wheels with different pore-forming agents

  • 摘要: 为改善硬质合金球阀的加工效果,在树脂金刚石砂轮中引入造孔剂,对其力学性能、微观形貌及磨削性能进行分析,研究空心玻璃球和塑料球造孔剂对树脂金刚石砂轮性能的影响。结果表明:随着造孔剂体积分数增加,树脂砂轮的抗折强度逐渐下降,且2种造孔剂对抗折强度的影响基本一致;砂轮的硬度随造孔剂体积分数的增加亦逐渐下降,但空心玻璃球造孔剂对砂轮硬度的影响显著大于塑料球的;加入造孔剂明显提升了砂轮的锋利性,空心玻璃球体造孔剂体积分数为15%和塑料球造孔剂体积分数为20%的砂轮综合性能最好,且后者的综合性能优于前者的。

     

  • 图  1  双自动研磨机构示意图

    Figure  1.  Schematic diagram of dual automatic grinding mechanism

    图  2  行星式研具布置示意图

    Figure  2.  Schematic diagram of planetary grinding tool layout

    图  3  不同造孔剂对试样抗折强度的影响

    Figure  3.  Effects of different pore-forming agents on flexural strengths of specimen

    图  4  不同造孔剂对试样硬度的影响

    Figure  4.  Effects of different pore-forming agents on specimen hardness

    图  5  不同造孔剂试样的微观形貌

    Figure  5.  Microscopic morphology of samples with different pore forming agents

    图  6  不同体积分数空心玻璃球造孔剂试样的微观形貌

    Figure  6.  Microscopic morphology of samples with different volume fractions of hollow glass balls

    图  7  不同体积分数塑料球时造孔剂试样的微观形貌

    Figure  7.  Microscopic morphology of samples with different volume fractions of plastic balls

    图  8  磨削图

    Figure  8.  Grinding diagram

    表  1  结合剂组分

    Table  1.   Binder components

    成分体积分数 φ1 / %
    酚醛树脂70
    弹性抛光体10
    GC15
    Cr2O35
    下载: 导出CSV

    表  2  磨削参数

    Table  2.   Grinding parameters

    参数类型或取值
    砂轮转速 n / (r·min−1)1 500
    单次进给余量 ap / mm0.005
    研磨压力 p / kPa50
    硬质合金球阀球体直径 D / mm180
    球体材质YG8
    球体硬度 HRA90
    下载: 导出CSV

    表  3  磨削实验结果

    Table  3.   Grinding test results

    造孔剂种类造孔剂体积分数
    φ2 / %
    磨削功率
    P / W
    工件表面粗糙度
    Ra / μm
    对比样06260.030 0

    空心玻璃球
    104950.042 0
    154080.048 0
    203210.090 0

    塑料球
    104860.036 0
    154620.041 0
    203860.047 2
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-05-19
  • 修回日期:  2023-08-17
  • 网络出版日期:  2023-11-06
  • 刊出日期:  2024-04-01

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