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Al2O3-TiC陶瓷材料微细电火花加工试验研究

吴耀光 张铁异 郭小龙 穆协乐 谢晋全

吴耀光,张铁异,郭小龙, 等. Al2O3-TiC陶瓷材料微细电火花加工试验研究[J]. 机械科学与技术,2024,43(5):851-857 doi: 10.13433/j.cnki.1003-8728.20220255
引用本文: 吴耀光,张铁异,郭小龙, 等. Al2O3-TiC陶瓷材料微细电火花加工试验研究[J]. 机械科学与技术,2024,43(5):851-857 doi: 10.13433/j.cnki.1003-8728.20220255
WU Yaoguang, ZHANG Tieyi, GUO Xiaolong, MU Xiele, XIE Jinquan. Experimental Study on Micro Electrical Discharge Machining of Al2O3-TiC Ceramics[J]. Mechanical Science and Technology for Aerospace Engineering, 2024, 43(5): 851-857. doi: 10.13433/j.cnki.1003-8728.20220255
Citation: WU Yaoguang, ZHANG Tieyi, GUO Xiaolong, MU Xiele, XIE Jinquan. Experimental Study on Micro Electrical Discharge Machining of Al2O3-TiC Ceramics[J]. Mechanical Science and Technology for Aerospace Engineering, 2024, 43(5): 851-857. doi: 10.13433/j.cnki.1003-8728.20220255

Al2O3-TiC陶瓷材料微细电火花加工试验研究

doi: 10.13433/j.cnki.1003-8728.20220255
基金项目: 国家留学基金奖学金项目(桂教办[2016] 50)与广西科技攻关项目(桂科攻1355008-10)
详细信息
    作者简介:

    吴耀光,硕士研究生, 807659794@qq.com

    通讯作者:

    张铁异,教授,硕士生导师, 2517498919@qq.com

  • 中图分类号: TG148

Experimental Study on Micro Electrical Discharge Machining of Al2O3-TiC Ceramics

  • 摘要: 为研究电火花加工Al2O3-TiC陶瓷材料工艺参数对工艺性能的影响,设计了混合2-3水平正交试验方法。研究加工极性、极间电压、最大放电电流、增益、脉冲频率、脉宽、放电间隙与电极长度损耗、电极轮廓损耗、材料去除率之间的规律。通过极差分析,获得了工艺参数对工艺性能的影响趋势。结合方差分析,表明加工极性对电极损耗有显著影响,极间电压、最大放电电流显著影响材料去除率。综合三项工艺性能,最优的参数组合为负加工极性、130 V极间电压、50 A最大放电电流、45增益、150 Hz脉冲频率、1.0 μs脉宽、放电间隙40 μm。
  • 图  1  Al2O3-TiC陶瓷试验样品

    Figure  1.  Experimental samples of Al2O3-TiC ceramics

    图  2  试验平台

    Figure  2.  Experimental platform

    图  3  工具电极损耗测量

    Figure  3.  Measurement of tool electrode wear

    图  4  微细EDM电极修正单元

    Figure  4.  Micro-EDM electrode correction unit

    图  5  电极实物图与计算方法

    Figure  5.  Image of the electrode and calculation method

    图  6  电极长度损耗主效应图

    Figure  6.  Main effect of electrode length wear

    图  7  电极轮廓损耗主效应图

    Figure  7.  Main effect of electrode profile wear

    图  8  加工时间主效应图

    Figure  8.  Main effect of machining time

    表  1  Al2O3-TiC陶瓷的物理性能

    Table  1.   Physical properties of Al2O3-TiC ceramics

    物理特性量值
    熔点/°C2146
    导热系数/[W·(m·K)−1]22
    密度/(gm·cc−13.69
    电导率/(S·cm−1<10 ~ 14
    硬度/HV1800
    杨氏模量/GPa386
    下载: 导出CSV

    表  2  正交试验因素和水平

    Table  2.   Orthogonal experimental factors and levels

    水平 加工极性 极间电压/V 放电电流/A 增益 脉冲频率/kHz 脉宽/μs 放电间隙/μm
    1 80 10 10 80 1.0 45
    2 + 105 30 45 115 3.3 55
    3 130 50 80 150 5.6 70
    下载: 导出CSV

    表  3  试验结果与极差分析

    Table  3.   Experimental results and range analysis

    序号 控制参数 ELW/
    10−3 mm
    ECW/
    10−3 mm2
    MT/s
    P V I G F T W
    111111117.31264.23313.963
    212222217.95131.18710.256
    313333314.1146.1124.911
    421123315.3972.51812.399
    52223113.552.6845.145
    62331224.8336.473.269
    731212311.8719.2348.039
    832323119.557.2153.741
    93313129.9548.5153.207
    10 +11332117.636.46916.113
    11 +12113232.676.86811.635
    12 +13221329.796.8272.249
    13 +21233224.356.1475.423
    14 +22311326.2713.9452.773
    15 +23122129.476.5431.981
    16 +31321216.357.1948.867
    17 +32132329.157.6172.181
    18 +33213120.837.1841.915
    $ {k}_{11} $0.012730.021580.017160.022330.018970.020840.01721
    $ {k}_{12} $0.025170.017320.021530.018060.021420.018010.01849
    $ {k}_{13} $0.017960.018170.016460.016460.018010.02116
    $ {R}_{1} $0.012440.004270.004370.005870.004960.002830.00395
    $ {k}_{21} $0.069790.076940.062630.067710.057980.054750.05723
    $ {k}_{22} $0.007640.023050.028250.028870.038580.046630.03458
    $ {k}_{23} $0.016160.025270.019560.019590.014770.02434
    $ {R}_{2} $0.062150.060780.037350.048140.038390.039970.03289
    $ {k}_{31} $7.2149.85410.8017.5616.9325.1386.034
    $ {k}_{32} $5.9045.1655.9555.5046.5827.7776.973
    $ {k}_{33} $4.6582.9226.6126.1636.7636.671
    $ {R}_{3} $1.3105.1967.8792.0570.7692.6400.939
    下载: 导出CSV

    表  4  电极长度损耗方差分析与F检验

    Table  4.   Variance analysis and F-test of electrode length wear

    因素 自由度 平方和/10−4 均方/10−4 F P
    P 1 6.97 6.97 20.66 0.010
    V 2 0.64 0.32 0.94 0.462
    I 2 0.63 0.31 0.93 0.465
    G 2 1.10 0.55 1.64 0.303
    F 2 0.74 0.37 1.09 0.418
    T 2 0.32 0.16 0.47 0.654
    W 2 0.49 0.24 0.72 0.540
    误差 4 1.35 0.34
    总和 17 12.23
    下载: 导出CSV

    表  5  电极轮廓损耗方差分析与F检验

    Table  5.   Variance analysis and F-test of electrode profile wear

    因素 自由度 平方和/10−2 均方/10−2 F P
    P 1 1.7383 1.7383 4.56 0.100
    V 2 1.3296 0.6648 1.74 0.285
    I 2 0.5173 0.2586 0.68 0.558
    G 2 0.7827 0.3913 1.03 0.437
    F 2 0.4423 0.2212 0.58 0.601
    T 2 0.5359 0.2679 0.70 0.548
    W 2 0.3399 0.1700 0.45 0.669
    误差 4 1.5252 0.3813
    总和 17 7.2113
    下载: 导出CSV

    表  6  加工时间方差分析与F检验

    Table  6.   Variance analysis and F-test of machining time

    因素 自由度 平方和 均方 F P
    P 1 7.726 7.7264 1.31 0.316
    V 2 98.497 49.2483 8.38 0.037
    I 2 189.505 94.7524 16.12 0.012
    G 2 12.713 6.3565 1.08 0.421
    F 2 1.779 0.8894 0.15 0.864
    T 2 21.274 10.6372 1.81 0.276
    W 2 2.758 1.3789 0.23 0.801
    误差 4 23.512 5.8779
    总和 17 357.763
    下载: 导出CSV
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  • 收稿日期:  2022-01-23
  • 刊出日期:  2024-05-31

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