摘要
传统工艺生产复杂带空腔零件大多采用铸造、焊接或机械加工等方法,材料浪费严重,且其力学性能不高。因此,我们提出了采用多向挤压方法来成形三通件等多孔零件。本文采用刚塑性模型对多向挤压成形过程进行了二维数值模拟研究,经过分析确定了可行的成形工艺方案,并详细论述了成形时金属的流动规律,最后讨论了成形三通件时变形工艺参数(温度、摩擦系数)对其挤压成形力的影响,指出挤压时在合理的温度范围内应尽量选择较高的挤压温度和良好的润滑条件。
Complicated parts with cavities had been produced by traditional methods such as cast, weld or machine. The question is that they waste much raw material and its mechanical properties are low. So the multidirectional extrusion was put forward to form parts with cavities such as three-cavities and so on. Rigid-plastic model has adopted to study the process of multidirectional extrusion. A feasible forming process plan has been determined after analysis in this paper, and the metal flow regularity discussed in detail, finally, the influence of forming process parameters （temperature, friction） on the force of punches when forming has been discussed. It concluded that we must choose higher extrusion temperature in rational range and good friction conditions when extruding.
出处
《有色金属加工》
CAS
2008年第2期32-35,49,共5页
Nonferrous Metals Processing
基金
国家自然科学基金项目资助(50575213)
关键词
三通件
多向挤压
数值模拟
工艺参数
three-way part
multidirectional extrusion
simulation
forming process parameter
