| 方形管分流模双孔挤压过程中金属的流动行为 |
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| 引用本文： | 黄东男,李静媛,张志豪,谢建新.方形管分流模双孔挤压过程中金属的流动行为[J].中国有色金属学报,2010,20(3). |
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| 作者姓名： | 黄东男 李静媛 张志豪 谢建新 |
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| 作者单位： | 1. 北京科技大学,新材料技术研究院,北京,100083;内蒙古工业大学,材料科学与工程学院,呼和浩特,010051
2. 北京科技大学,新材料技术研究院,北京,100083 |
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| 基金项目： | 国家重点基础研究发展计划资助项目，国家"十一五"科技支撑计划资助项目 |
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| 摘 要： | 采用Deform-3D有限元软件,结合基于逆向工程的焊合面网格修复技术,建立方形管分流模双孔挤压时包括焊合过程在内的全过程的三维有限元数值模拟方法,分析分流孔的配置方案对金属流动行为、挤压力、挤压温度及成形质量的影响。结果表明:中间分流孔与位于两侧分流孔的面积比值Q1/Q2是影响金属流动均匀性、焊缝位置和制品平直度的重要因素,比值Q1/Q2为0.93～1.03时,挤出的方管平直度好;分流孔外接圆直径和挤压筒直径的比值对挤压过程中温升的影响较小,而对挤压力有一定的影响,当该比值为0.82时挤压力最小,该比值超过0.82时挤压力明显增加。
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| 关 键 词： | 分流模挤压 有限元模拟 分流孔面积 金属流动行为 |
Metal flowing behaviors during diplopore extrusion of square tube with porthole die |
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| HUANG Dong-dan,LI Jing-yuan,ZHANG Zhi-hao,XIE Jian-xin.Metal flowing behaviors during diplopore extrusion of square tube with porthole die[J].The Chinese Journal of Nonferrous Metals,2010,20(3). |
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| Authors: | HUANG Dong-dan LI Jing-yuan ZHANG Zhi-hao XIE Jian-xin |
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| Affiliation: | HUANG Dong-dan1,2,LI Jing-yuan1,ZHANG Zhi-hao1,XIE Jian-xin1 (1.Institute of Advanced Materials , Technologies,University of Science , Technology Beijing,Beijing 100083,China,2.School of Materials Science , Engineering,Inner Mongolia University of Technology,Hohhot 010051,China) |
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| Abstract: | Applying welding plane meshes repairing technology based on reverse engineering and commercial FEM soft Deform-3D,a three dimensions finite element method for simulating the whole diplopore extrusion process of square tube with porthole die,including bonding stage,were developed.The effects of the portholes configuration scheme on the metal flowing behaviors,extrusion load,tube temperature and forming quality were analyzed.The results show that,the area ratio of the center to the side porthole (Q1/Q2) is an... |
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| Keywords: | porthole die extrusion finite element simulation porthole area metal flowing behavior |
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