新型切向分块式两面顶超高压模具

王伯龙 李明哲 刘志卫 韩鑫

王伯龙, 李明哲, 刘志卫, 韩鑫. 新型切向分块式两面顶超高压模具[J]. 高压物理学报, 2019, 33(1): 013102. doi: 10.11858/gywlxb.20180595
引用本文: 王伯龙, 李明哲, 刘志卫, 韩鑫. 新型切向分块式两面顶超高压模具[J]. 高压物理学报, 2019, 33(1): 013102. doi: 10.11858/gywlxb.20180595
WANG Bolong, LI Mingzhe, LIU Zhiwei, HAN Xin. A Novel Tangential Split-Belt Ultrahigh Pressure Apparatus[J]. Chinese Journal of High Pressure Physics, 2019, 33(1): 013102. doi: 10.11858/gywlxb.20180595
Citation: WANG Bolong, LI Mingzhe, LIU Zhiwei, HAN Xin. A Novel Tangential Split-Belt Ultrahigh Pressure Apparatus[J]. Chinese Journal of High Pressure Physics, 2019, 33(1): 013102. doi: 10.11858/gywlxb.20180595

新型切向分块式两面顶超高压模具

doi: 10.11858/gywlxb.20180595
基金项目: 国家自然科学基金(51605007);吉林大学开放基金(K201705)
详细信息
    作者简介:

    王伯龙(1989-),男,博士研究生,主要从事超高压模具设计、大腔体静高压技术研究. E-mail:892460540@qq.com

    通讯作者:

    韩 鑫(1979-),男,副教授,硕士生导师,主要从事无模成形工艺及设备、塑性加工过程数值模拟研究. E-mail: hanxin@sdut.edu.cn

  • 中图分类号: O521.3

A Novel Tangential Split-Belt Ultrahigh Pressure Apparatus

  • 摘要: 以提高年轮式超高压模具的压力承载能力为目标,设计一种新型切向剖分式模具结构。切向剖分式结构通过剖分面上的相互摩擦和挤压,不仅能够消除压缸内壁的周向拉应力,而且在内壁上产生较大的周向压应力。这种受压状态对硬质合金材料非常有利,可以显著提高压缸的极限承载能力。数值模拟结果显示,在相同的载荷条件下,分块式压缸受到的等效应力显著小于年轮式压缸。分块式压缸内壁的3个主应力均为压应力,且差值较小,接近于等静压状态,因此能够承受更高的样品腔压力。对比实验结果同样证明切向剖分式超高压模具结构具有更高的极限承载能力。

     

  • 图  年轮式两面顶超高装置示意图

    Figure  1.  Schematic of belt type high pressure apparatus

    图  新型切向剖分块式高压模具示意图

    Figure  2.  Schematic of tangent split-belt high pressure die

    图  高压模具的主要结构尺寸

    Figure  3.  Geometric dimension of the high pressure die

    图  数值模拟中压缸的加载条件

    Figure  4.  Loading condition of the cylinder in the numerical simulation

    图  压缸的周向应力分布

    Figure  5.  Circumferential stress of the cylinder

    图  压缸的等效应力分布

    Figure  6.  Equivalent stress of the cylinders

    图  压缸内壁在轴向上的主应力分布

    Figure  7.  Three principal stresses in the axial direction of the cylinder

    图  两种压缸内壁轴向的等效应力

    Figure  8.  Equivalent stress on the inner wall of the cylinder

    图  实验用高压模具和不同的压缸结构:(a)超高压模具;(b)年轮式压缸;(c)分块式压缸; (d)破坏后的年轮式压缸;(e)破坏后的分块式压缸

    Figure  9.  High pressure die and different cylinders: (a) ultra-high pressure die; (b) belt type cylinder; (c) split cylinder; (d) belt cylinder after breakup; (e) split cylinder after breakup

    表  1  材料的主要性能参数[14-15]

    Table  1.   Main performance parameters of the materials[14-15]

    Material ρ0/(g·cm–3) E/GPa Poisson’s ratio Failure strength/GPa
    YG8 14.6 508 0.22 6.2
    45CrNiMoVA 7.83 210 0.29 1.6
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出版历程
  • 收稿日期:  2018-07-11
  • 修回日期:  2018-08-12

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