模芯角度对镁合金静液挤压过程的作用

Effects of Mandrel Angle on Hydrostatic Extrusion Process of Magnesium Alloy Tube

摘要:

文章通过DEFORM-3D软件模拟了不同的挤压速度与初始坯料温度条件下，模芯的角度（90°, 120°, 150°）对管材静液挤压成形过程的影响。模拟结果显示，静液挤压过程中大角度模芯的压力峰值明显高于小角度模芯的压力峰值，同时随着模芯角度的增大管材的速度场分布不均性增加。

关键词:静液挤压;模芯角度;AZ80

Abstract:

The hydrostatic extrusion process of magnesium alloy AZ80 tube with different mandrel angles (90°,120°,150°) was simulated by the DEFORM-3D software with different extrusion speeds and initial billet temperature. The simulated results show that the peak load of the extrusion process with big mandrel angle is obviously higher than that of the small angle and the inhomogeneity of billet velocity field is intensified with the increase of the mandrel angle.

Key words:hydrostatic extrusion; AZ80; mandrel angle