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3C陶瓷用钎焊金刚石小磨头的端面磨损

周渝 黄国钦

周渝, 黄国钦. 3C陶瓷用钎焊金刚石小磨头的端面磨损[J]. 金刚石与磨料磨具工程, 2022, 42(5): 595-601. doi: 10.13394/j.cnki.jgszz.2022.0030
引用本文: 周渝, 黄国钦. 3C陶瓷用钎焊金刚石小磨头的端面磨损[J]. 金刚石与磨料磨具工程, 2022, 42(5): 595-601. doi: 10.13394/j.cnki.jgszz.2022.0030
ZHOU Yu, HUANG Guoqin. End face wear of small brazed diamond grinding head for 3C ceramics[J]. Diamond & Abrasives Engineering, 2022, 42(5): 595-601. doi: 10.13394/j.cnki.jgszz.2022.0030
Citation: ZHOU Yu, HUANG Guoqin. End face wear of small brazed diamond grinding head for 3C ceramics[J]. Diamond & Abrasives Engineering, 2022, 42(5): 595-601. doi: 10.13394/j.cnki.jgszz.2022.0030

3C陶瓷用钎焊金刚石小磨头的端面磨损

doi: 10.13394/j.cnki.jgszz.2022.0030
基金项目: 国家自然科学基金(51975221)
详细信息
    通讯作者:

    黄国钦,男,1981年生,博士、教授、博士生导师。主要研究方向:超硬磨料工具、高效精密加工、智能制造与装备。E-mail:smarthgq@hqu.edu.cn

  • 中图分类号: TG74; TG58

End face wear of small brazed diamond grinding head for 3C ceramics

  • 摘要: 金刚石微铣磨头广泛用于3C产品的先进陶瓷构件加工中。通过对3C产品中最常用的氧化锆陶瓷工件进行磨削试验,观察钎焊金刚石微铣磨头磨损过程中的形貌演变,并统计氧化锆陶瓷的累计去除体积与磨头上金刚石磨粒磨损数量的对应关系,对比分析铜基和镍基钎料金刚石微铣磨头的磨损失效情况及寿命。结果表明:在相同加工参数条件下,铜基磨头的寿命较长,是镍基磨头寿命的1.2倍;在磨削过程中,金刚石磨头端面的磨粒存在破碎、磨平、脱落3种主要失效形式,且磨头的磨损主要从磨头端面边缘开始,逐步向其中心扩散,直至磨粒磨损严重而导致磨头失效。

     

  • 图  1  基体尺寸

    Figure  1.  Base size

    图  2  磨头

    Figure  2.  Grinding head

    图  3  磨削试验系统

    Figure  3.  Grinding test system

    图  4  磨头端面区域划分

    Figure  4.  Division of grinding head end face area

    图  5  铜基磨头磨削前后表面形貌变化

    Figure  5.  Changes of surface topography before and after grinding with copper-based grinding head

    图  6  镍基磨头磨削前后表面形貌变化

    Figure  6.  Changes of surface topography before and after grinding with nickel-based grinding head

    图  7  铜基磨头磨粒数量随磨削材料累计去除体积的变化

    Figure  7.  Variation of abrasive particle numbers of copper-based grinding head with cumulative material removal volumes

    图  8  镍基磨头磨粒数量随磨削材料累计去除体积的变化

    Figure  8.  Variation of abrasive particle numbers of nickel-based grinding head with cumulative material removal volumes

    图  9  磨头磨削过程示意图

    Figure  9.  Schematic diagram of grinding process of grinding head

    图  10  磨粒脱落过程

    Figure  10.  Abrasive particle shedding process

    表  1  2种磨头端面的磨粒数及密度

    Table  1.   Number and density of abrasive grains on the end face of two kinds of grinding heads

    项目Cu基Ni基
    端面磨粒数量 N / 颗280282
    端面磨粒密度 ρ / (颗·mm−2)89.1789.81
    下载: 导出CSV

    表  2  陶瓷磨削参数

    Table  2.   Parameters for grinding ceramic

    参数取值或类型
    主轴转速 n /(r·min−120 000
    线速度 v /(m·s−12.09
    进给速度 vw /(mm·min−1300
    切削深度 ap / μm20
    加工深度 h / mm0.2
    冷却液STA20切削液
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-03-29
  • 修回日期:  2022-06-22
  • 刊出日期:  2022-10-10

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