1)  die extrusion
口模挤出
1.
Possible causes of HWNP(High Weissenberg Number Problem) in computer modeling of polymer die extrusion are discussed.
讨论了聚合物口模挤出计算机模拟中高Weissenberg(We)数问题 (HWNP)产生的可能的原因 ,指出本构方程本身固有的缺陷、流变方程的双曲线型、局部高应力梯度都有可能导致HWNP。
2)  die
口模
1.
Design of Plastic Profile Extrusion Dies;
塑料异型材挤出口模设计
2.
By means of the visualization device,the flow trajectories of polymer melts in an cuneiform convergent extrusion die were recorded by video.
利用可视化实验手段,动态拍摄了楔形收敛挤出口模内聚合物熔体的流动轨迹线,借助于轨迹线,分析了熔体在口模中的流动状态,同时通过实验得到了熔体在口模过渡区内的停留时间与挤出流量之间的关系。
3.
The extrusion of the profile-tube was simulated,and the effects of the bourdary of die on the velocity distribution of the flow field were discussed.
经实验验证,模拟与实验相结合设计口模的方法可以使小截面精密型材口模设计更加合理,缩短口模设计周期。
3)  Die design
口模设计
1.
After an analysis on the velocity distribution obtained from numerical simulation, the original die design was modified;and the length of each part of molding zone was determined according to the principle of flow rate equilibrium.
研究还表明:对于异型材挤出口模设计,不能把口模截面视作若干规则形状截面的简单几何组合,必须把其当成一个整体来对待;过渡区不仅影响成型区的流动,而且对稳流区的流动也有不可忽视的影响,设计时应对过渡区给予足够的重视。
2.
The gas-assisted extrusion,fiber spinning,hollow fiber and microporous membrane technology were contacted for the first time,and the actuality of these technologies and the characteristics of die design were introduced breifly at home and abroad.
首次将气辅挤出、纤维纺丝、中空纤维及微孔薄膜技术联系起来,并简要介绍了国内外这些技术的研究现状和口模设计的特点。
4)  extrusion die
挤出口模
1.
Numerical simulation of three dimensional viscoelastic polymer melt flow through the extrusion die with an L-shaped cross section;
聚合物熔体在L型异型材挤出口模内三维粘弹流动数值模拟~*
2.
Determination of entry region length for extrusion dies;
粘弹性流体在挤出口模中入口区长度的确定
3.
Using program POLYFLOW,numerical simulation was implemented for the two dimensional isothermal polymer melt flow through the extrusion die with three types of stick.
构建了3种构型的圆棒挤出口模,采用有限元分析软件 POLYFLOW 对聚合物熔体在挤出口模中的二维等温流动进行了数值模拟,分析了熔体在不同口模内的速度和压力分布。
5)  feeding head shape of die
口模形状
6)  necking mould
缩口模具
1.
The automatic necking mould stretching for 2 twice with one mould has the advantages to produce the product with high quality and in big production volume.
对铝壶嘴的落料、拉深、缩口、弯曲、胀形、切口、压边的成形工序进行了分析,并对这些工序中的自动缩口模具在设计与制造中存在的若干关键性技术进行了研究。
参考词条
补充资料:挤出模塑法
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性质:又称挤塑(法)、挤出模塑法和挤出成型法。热塑性塑料和橡胶主要加工成型方法之一。将原料由挤压机的加料漏斗连续加入加热的料筒中,软化后借料筒内螺旋杆的作用,电机头口型挤出,经冷却定形,成为一定形状的连续制品,如管、棒、板等。主要用于塑料工业、橡胶工业和铅笔工业等,一些化学纤维的熔体纺丝也用挤出机向喷丝头供料。电缆的绝缘套和汽车内胎等,也可用本法制成。

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