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超声辅助螺旋磨削SiCf/SiC陶瓷基复合材料

张海涛 鲍岩 杨峰 孙海琦 董志刚 康仁科

张海涛, 鲍岩, 杨峰, 孙海琦, 董志刚, 康仁科. 超声辅助螺旋磨削SiCf/SiC陶瓷基复合材料[J]. 金刚石与磨料磨具工程, 2022, 42(1): 81-87. doi: 10.13394/j.cnki.jgszz.2021.0107
引用本文: 张海涛, 鲍岩, 杨峰, 孙海琦, 董志刚, 康仁科. 超声辅助螺旋磨削SiCf/SiC陶瓷基复合材料[J]. 金刚石与磨料磨具工程, 2022, 42(1): 81-87. doi: 10.13394/j.cnki.jgszz.2021.0107
ZHANG Haitao, BAO Yan, YANG Feng, SUN Haiqi, DONG Zhigang, KANG Renke. Ultrasonic assisted helical grinding of SiCf/SiC ceramic matrix composites[J]. Diamond & Abrasives Engineering, 2022, 42(1): 81-87. doi: 10.13394/j.cnki.jgszz.2021.0107
Citation: ZHANG Haitao, BAO Yan, YANG Feng, SUN Haiqi, DONG Zhigang, KANG Renke. Ultrasonic assisted helical grinding of SiCf/SiC ceramic matrix composites[J]. Diamond & Abrasives Engineering, 2022, 42(1): 81-87. doi: 10.13394/j.cnki.jgszz.2021.0107

超声辅助螺旋磨削SiCf/SiC陶瓷基复合材料

doi: 10.13394/j.cnki.jgszz.2021.0107
基金项目: 基础**课题(2020-****-ZD-176);中国博士后科学基金资助(2020T130076)
详细信息
    通讯作者:

    康仁科,男,1962年生,教授。主要研究方向:精密与超精密加工、特种加工等。E-mail: kangrk@dlut.edu.cn

  • 中图分类号: TG58;TQ164

Ultrasonic assisted helical grinding of SiCf/SiC ceramic matrix composites

  • 摘要: 针对SiC纤维增强SiC陶瓷基复合材料(SiCf/SiC)存在加工质量差、材料去除困难等问题,开展金刚石砂轮超声辅助螺旋磨削SiCf/SiC陶瓷基复合材料试验,研究其出口质量、孔壁形貌及孔壁表面粗糙度。结果表明:与传统制孔相比,超声辅助螺旋磨削制孔出口处材料无大面积崩边;砂轮磨削速度方向与纤维方向的夹角θ的周期性变化导致孔壁表面形貌呈现规律性变化。当θ在0°/180°时,纤维与基体多发生脱黏现象;当θ在45°时,纤维多发生剪切断裂;当θ在90°时,纤维多发生挤压断裂;当θ在135°时,纤维既发生剪切断裂又发生挤压断裂;孔壁表面粗糙度Saθ为90°时最低,在θ为135°时最高。在一定范围内,表面粗糙度Sa随着超声振幅的增大而降低,最大降幅为38.7%;随着进给速度的增大而升高,最大增幅为39.3%。

     

  • 图  1  试验平台

    Figure  1.  Testing platform

    图  2  超声辅助螺旋磨削制孔原理

    Figure  2.  Principle of hole making in ultrasonic assisted helical grinding

    图  3  出口形貌

    Figure  3.  Export morphology

    图  4  砂轮磨削速度方向与纤维方向所成夹角θ

    Figure  4.  Angle θ between grinding speed direction and fiber direction

    图  5  SiCf/SiC陶瓷基复合材料制孔孔壁分析

    Figure  5.  Analysis of hole wall of SiCf/SiC ceramic matrix composites

    图  6  0° ~ 180°范围内夹角θ对应的材料去除示意图

    Figure  6.  Schematic diagram of material removal corresponding of angle θ ranging from 0° to 180°

    图  7  孔壁三维形貌及粗糙度

    Figure  7.  Three-dimensional morphology and roughness of hole wall

    图  8  超声振幅对孔壁粗糙度值的影响

    Figure  8.  Influence of ultrasonic amplitude on roughness of hole wall

    表  1  试验参数

    Table  1.   Testing condition

    序号进给速度 vf /(mm·min−1)超声振幅 A / μm
    1 80 0
    2 100 0
    3 120 0
    4 80 2
    5 100 2
    6 120 2
    7 80 4
    8 100 4
    9 120 4
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出版历程
  • 收稿日期:  2021-10-12
  • 修回日期:  2021-12-02
  • 录用日期:  2021-12-20
  • 网络出版日期:  2022-03-17
  • 刊出日期:  2022-03-17

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