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管材挤出模具新型压缩段流道的研究
引用本文:李学章,郭奕崇.管材挤出模具新型压缩段流道的研究[J].北京化工大学学报(自然科学版),2005,32(3):103-105.
作者姓名:李学章  郭奕崇
作者单位:北京化工大学机电工程学院, 北京 100029
摘    要:在对质点流迹分析基础上,提出管材挤出流道的流线型压缩过渡方式,并给出了以三次多项式作为管材挤出流道型腔曲线的数学模型,构建管材挤出模具压缩定型段的过渡流道,并通过聚合物流体分析软件POLYFLOW对比模拟分析了直线型过渡流道和流线型过渡流道的速度、压力、黏度、剪切速率的变化,分析结果显示,流线型流道内的流动稳定性和均匀性明显优于直线型流道。

关 键 词:管材挤出  压缩  流线型流道  流动均匀性  管材挤出  压缩  流线型流道  流动均匀性
收稿时间:2004-11-04
修稿时间:2004年11月4日

On a new-style channel of compressing section in tube extrusion die
LI Xue-zhang,GUO Yi-chong.On a new-style channel of compressing section in tube extrusion die[J].Journal of Beijing University of Chemical Technology,2005,32(3):103-105.
Authors:LI Xue-zhang  GUO Yi-chong
Institution:College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Abstract:Based on the principle of extrusion die design, using the cubic polynomial as a mathematical model of skeleton line for channel model curve, the transparent channel of the compressing and the shaping sections in a tube extrusion die was construeted, and the change of the pressure, viscosity, shear rate and the velocity were simulated with the exclusive software of POLYFLOW. The results of the numerical analysis show that the streamline channel model proposed by this methodology excels the linear style model in flow stability and gliding property.
Keywords:tube extrusion  compressing  streamline channel  flow uniformity
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