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砂布轮柔性抛光表面完整性关键表征参数研究

淮文博 蔺小军 史耀耀

淮文博,蔺小军,史耀耀. 砂布轮柔性抛光表面完整性关键表征参数研究[J]. 机械科学与技术,2021,40(11):1735-1740 doi: 10.13433/j.cnki.1003-8728.20200260
引用本文: 淮文博,蔺小军,史耀耀. 砂布轮柔性抛光表面完整性关键表征参数研究[J]. 机械科学与技术,2021,40(11):1735-1740 doi: 10.13433/j.cnki.1003-8728.20200260
HUAI Wenbo, LIN Xiaojun, SHI Yaoyao. Study on Key Characterization Parameters of Surface Integrity in Flexible Polishing of Abrasive Cloth Wheel[J]. Mechanical Science and Technology for Aerospace Engineering, 2021, 40(11): 1735-1740. doi: 10.13433/j.cnki.1003-8728.20200260
Citation: HUAI Wenbo, LIN Xiaojun, SHI Yaoyao. Study on Key Characterization Parameters of Surface Integrity in Flexible Polishing of Abrasive Cloth Wheel[J]. Mechanical Science and Technology for Aerospace Engineering, 2021, 40(11): 1735-1740. doi: 10.13433/j.cnki.1003-8728.20200260

砂布轮柔性抛光表面完整性关键表征参数研究

doi: 10.13433/j.cnki.1003-8728.20200260
基金项目: 国家自然科学基金项目(51675439)与西安理工大学校博士启动金(121-451119001)
详细信息
    作者简介:

    淮文博(1979−),副教授,博士,研究方向为复杂曲面柔性抛光技术,huaiwb@xaut.edu.cn

    通讯作者:

    蔺小军,教授,博士,linxj@nwpu.edu.cn

  • 中图分类号: TG156

Study on Key Characterization Parameters of Surface Integrity in Flexible Polishing of Abrasive Cloth Wheel

  • 摘要: 航空发动机叶片表面完整性严重影响叶片疲劳强度和服役寿命。为掌握砂布轮柔性抛光叶片表面完整性关键表征参数,基于“数控机床+柔性磨头+弹性磨具(砂布轮)”的抛光工艺装备开展了TC4叶片抛光试验和表面完整性检测,对比了抛光前后表面完整性各项表征参数变化,分析了变化机理,结果表明:砂布轮柔性抛光对叶片表面粗糙度、表面微观形貌、表面残余应力、表面显微硬度有明显改善,对深度方向残余应力、深度方向显微硬度、微观组织没有影响。研究结果为砂布轮抛光表面完整性控制提供了依据。
  • 图  1  抛光轨迹和砂布轮

    图  2  表面粗糙度测量结果

    图  3  抛光前后表面微观形貌

    图  4  表面残余应力测量数据

    图  5  沿深度方向残余应力变化曲线

    图  6  表面残余应力测点分布

    图  7  表面残余应力分布

    图  8  显微硬度测试结果(0.05 HV)

    图  9  柔性抛光前后试件断面微观组织

    表  1  TC4钛合金化学成分 %

    合金ω(Al)ω(V)ω(Fe)ω(Si)ω(C)ω(N)ω(H)ω(O)其他
    TC45.5 ~ 6.83.5 ~ 4.5≤0.30≤0.15≤0.10≤0.05≤0.01≤0.200.11
    下载: 导出CSV

    表  2  TC4钛合金力学性能

    合金布氏
    硬度HB
    抗拉强度
    σb/MPa
    伸长率
    δ/%
    冲击值ak/
    (J·cm–2)
    热导系数λ/
    (J·(cm·s·℃)–1)
    TC4320 ~ 3609321039.240.068
    下载: 导出CSV

    表  3  抛光工艺参数

    参数数值
    砂布轮粒度 1000
    主轴转速n/(r·min–1) 6000
    进给速度v/(m·min–1) 250
    压缩量ap/mm 0.3
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-05-03
  • 刊出日期:  2021-11-05

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