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外圆纵向磨削工艺对18CrNiMo7–6钢表面完整性的影响

朱浩阳 郜伟 张银霞 王子乐 王栋

朱浩阳, 郜伟, 张银霞, 王子乐, 王栋. 外圆纵向磨削工艺对18CrNiMo7–6钢表面完整性的影响[J]. 金刚石与磨料磨具工程, 2022, 42(3): 300-306. doi: 10.13394/j.cnki.jgszz.2021.0203
引用本文: 朱浩阳, 郜伟, 张银霞, 王子乐, 王栋. 外圆纵向磨削工艺对18CrNiMo7–6钢表面完整性的影响[J]. 金刚石与磨料磨具工程, 2022, 42(3): 300-306. doi: 10.13394/j.cnki.jgszz.2021.0203
ZHU Haoyang, GAO Wei, ZHANG Yinxia, WANG Zile, WANG Dong. Effect of cylindrical longitudinal grinding process on surface integrity of 18CrNiMo7–6 steel[J]. Diamond &Abrasives Engineering, 2022, 42(3): 300-306. doi: 10.13394/j.cnki.jgszz.2021.0203
Citation: ZHU Haoyang, GAO Wei, ZHANG Yinxia, WANG Zile, WANG Dong. Effect of cylindrical longitudinal grinding process on surface integrity of 18CrNiMo7–6 steel[J]. Diamond &Abrasives Engineering, 2022, 42(3): 300-306. doi: 10.13394/j.cnki.jgszz.2021.0203

外圆纵向磨削工艺对18CrNiMo7–6钢表面完整性的影响

doi: 10.13394/j.cnki.jgszz.2021.0203
基金项目: 国家自然科学基金(U1804254)
详细信息
    作者简介:

    朱浩阳:

    通讯作者:

    张银霞,女,1974年生,博士、副教授、硕士生导师。主要研究方向:抗疲劳制造技术和精密超精密加工技术。E-mail: zhangyinxia@zzu.edu.cn

  • 中图分类号: TG581+.1

Effect of cylindrical longitudinal grinding process on surface integrity of 18CrNiMo7–6 steel

  • 摘要: 为了探究工件转速 nw 、磨削深度 ap和纵向进给速度 vf等磨削工艺参数对18CrNiMo7–6钢表面粗糙度和表层残余应力的影响,用端面外圆磨床开展其单因素外圆纵向磨削试验。结果表明:随着nw的增大,工件表面粗糙度Ra先减小后增大,当nw为120 r/min时,Ra达到最小值,此时工件表面的残余压应力最大;当nw大于120 r/min时,工件表面残余应力出现起伏。随着ap的增大,工件表面粗糙度Ra先减小后增大,工件表面残余拉应力随着磨削深度的增大而增大。随着vf的增大,工件表面粗糙度 Ra先减小后增大,当vf为210 mm/min时,Ra值最小;且随vf的增大,工件表面残余压应力逐渐减小,并最终转变为逐渐增大的残余拉应力。

     

  • 图  1  热处理后试样

    Figure  1.  Sample after heat treatment

    图  2  剖层深度与腐蚀时间关系

    Figure  2.  Relationship between profile depth and corrosion time

    图  3  工件转速对工件表面粗糙度的影响

    Figure  3.  Effect of workpiece speed on surface roughness

    图  4  磨削深度对工件表面粗糙度的影响

    Figure  4.  Effect of grinding depth on surface roughness

    图  5  纵向进给速度对表面粗糙度的影响

    Figure  5.  Effect of longitudinal feed speed on surface roughness

    图  6  工件原始残余应力

    Figure  6.  Original residual stress of the workpiece

    图  7  工件转速对工件表面残余应力的影响

    Figure  7.  Effect of workpiece speed on the residual stress on the surface of the workpiece

    图  8  工件转速对工件表层残余应力的影响

    Figure  8.  Effect of workpiece speed on the residual stress on the surface of the workpiece

    图  9  磨削深度对工件表面残余应力的影响

    Figure  9.  Effect of grinding depth on the residual stress on the surface of the workpiece

    图  10  磨削深度对工件表层残余应力的影响

    Figure  10.  Effect of grinding depth on the residual stress on the surface of the workpiece

    图  11  纵向进给速度对工件表面残余应力的影响

    Figure  11.  Effect of longitudinal feed speed on the residual stress on the surface of the workpiece

    图  12  纵向进给速度对工件表层残余应力的影响

    Figure  12.  Effect of longitudinal feed speed on the residual stress on the surface of the workpiece

    表  1  18CrNiMo7–6材料化学成分组成

    Table  1.   Chemical composition of 18CrNiMo7–6 material

    成分质量分数 ω / %
    C0.15~0.21
    Si0.15~0.40
    Mn0.60~0.90
    P<0.02
    Cr1.50~1.80
    Ni1.40~1.70
    Mo0.25~0.35
    Fe<96.00
    下载: 导出CSV

    表  2  18CrNiMo7–6钢力学性能

    Table  2.   Mechanical properties of 18CrNiMo7–6 steel

    屈服强度
    Rs / (N·mm−2)
    抗拉强度
    Rm / (N·mm−2)
    延伸率
    δ / %
    收缩率
    ψ / %
    1 0161 2201468
    下载: 导出CSV

    表  3  外圆磨削试验单因素试验参数

    Table  3.   Single factor test parameters of cylindrical grinding test

    条件编号工件转速
    nw / (r·min−1)
    磨削深度
    ap / μm
    纵向进给速度
    vf / (mm·min−1)
    180,100,120,140,16015120
    210010,15,20,25,30150
    38020120,150,180,210,240
    下载: 导出CSV
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出版历程
  • 录用日期:  2022-04-01
  • 收稿日期:  2021-11-26
  • 修回日期:  2021-12-02

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