基于Deform-3D方管铝合金型材等温挤压的变速挤压数值模拟

发布时间：2018-05-17 11:19

  本文选题：铝合金型材 + Deform-D　； 参考：《锻压技术》2015年04期

【摘要】：基于Deform-3D有限元分析,建立分段变速挤压模型对方管铝合金型材的挤压工艺进行数值模拟研究。结果表明:挤压速度越高,型材在模具出口处温度越高,温度差也越大,采取7,5和3 mm·s-1的分段变速挤压能有效实现模具出口处温度差恒定于8℃左右的等温挤压。在等温挤压环境下,最大等效应力值为47.4 MPa,最大等效应变值为7.92,最大损伤程度为1.70,比中间速度5 mm·s-1等速挤压模型的相应值分别下降了10%、23.8%和48.5%,且型材表面质量好,金相组织细致均匀,力学性能高。
[Abstract]:Based on the finite element analysis of Deform-3D, the extrusion process of aluminum alloy profile of cross-tube was studied by numerical simulation. The results show that the higher the extrusion speed, the higher the temperature at the exit of the die, and the greater the temperature difference. The isothermal extrusion at the exit of the die can be effectively realized by adopting 7mm / 5 and 3mm / s ~ (-1) of the section variable speed extrusion to keep the temperature difference at the exit of the mould constant at about 8 鈩，

本文编号：1901166