摘要
对成形某空心铝型材进行挤压模设计和三维建模,采用有限元模拟软件对挤压工艺进行模拟,并计算挤压型材截面上的速度差和速度均方差。通过分析模拟结果的速度分布和速度均方差,采用依次增设阻流块、引流槽和加长工作带的方法,改善挤压模出口流速的均匀性,使速度均方差降至合理范围,以获得最终模具设计方案。
The extrusion die for a hollow part was designed and the 3D modeling was car⁃ried out.The extrusion process was simulated by using finite element numerical simulation software,and the velocity difference and mean square deviation of the extrusion section were calculated.By analyzing the simulation results,the methods that adding blocking block,drainage tank,and lengthening working belt were adopted in turn to improve the uniformity of flow velocity at the outlet,and reduce the mean square deviation of velocity to a reasonable range.
作者
刘佳欣
刘佳宁
陈文琳
LIU Jia-xin;LIU Jia-ning;CHEN Wen-lin(School of Materials Science and Engineering,Hefei University of Technology,Xuancheng,Anhui 242000,China)
出处
《模具工业》
2020年第10期1-5,10,共6页
Die & Mould Industry
基金
安徽省大学生创新项目(S201910359338)。
关键词
铝型材
速度均方差
速度分布
数值模拟
模具结构优化
aluminum profile
mean square deviation of velocity
velocity distribution
numer⁃ical simulation
die structure optimization
