结果表明，不同角度圆锥口模挤出过程中，熔体在收敛流道受到拉伸流变，导致强烈的入口弹性效应，表现出熔体在不同角度圆锥口模挤出时有不同的挤出胀大比。
The results show that the extensional flow of melt in convergent die results in intense entrance elastic effect and distinct extrusion swell in conical die with different angles.
分析了模头流道结构和熔体在圆环型材挤出模中的流量，为环类型材挤出模设计提供了依据。
Analyzing the die channel structure and the melt flow of the circle profile in the extrusion die provides the basis of the die design for the circle profile.
结果表明，通过流场模拟的方法可以预测组合流道在挤出过程中的熔体充满长度，其误差为7。
It showed that the melt filled length could be forecasted through the flow field simulation, with an error 7.
采用该方法对桑塔纳轿车前保险杠注射模浇注系统进行优化设计后，在保证熔体充模的情况下，流道截面有较大的减小。
Using C MOLD software for injection molding CAE, it has been proved that the radius of runner which was calculated by the new method can be reduced obviously.
计算塑料熔体在锥环形流道中停留时间的一般公式可稍作推广即可应用到其它形状的流道计算中。
Some relative equations which are deriveted from the general calculation formula of residence time of plastic melt in the taper ring channel, could be applied to other configurations of channel.
从理论上分析了动态熔体流动过程，为研究聚合物熔体的动态充模过程提供流道系统压力降。
Dynamic flow process of molten polymer was studied in theory to offer a pressure drop input in the dynamic molding process of molten polymer.
以流道间隙处熔体体积均匀变化为条件，对管材挤出成型机头内腔的形状曲线进行分析优化，并且导出了一个优化曲线。
On condition that plastic melt volume undergoes a uniform change, the authors analyse the internal shape of pipe die and produce an optimum shape curve.
本文主要就全啮合同向双螺杆挤出机捏合块流道中熔体全充满区的流动进行了全三维非牛顿等温模拟。
This thesis concentrates on simulation of Non-Newtonian isothermal flow in kneading block in closely intermeshing co-rotating twin screw extruders.
熔喷非织造设备中聚合物熔体分配流道主要采用衣架型模头。
Coat-hanger die is usually used as the polymer melt distributor of the melt-blown nonwoven system.
结果表明，圆锥短口模挤出过程中，熔体在收敛流道受到拉伸流变，导致强烈的入口弹性效应，表现为熔体在短口模挤出时显著的挤出胀大。
The result shows that the extensional flowing of the melt occurs in convergent die resulting in intense entrance elastic effect and distinct extrusion swell.
流道中熔体温度均匀。
适当增加流道的长度，可以减小胶料出口处的速度场、剪切速率场的集中程度并使之趋于均匀，能够有效降低挤出胀大和模外熔体偏转流动现象。
The velocity field and shear rate distribution are reduced and uniform along with the proper increase of slip length. The die swell and the interface deflexion phenomenon will be reduced effectively.
结果表明，圆锥短口模挤出过程中，熔体在收敛流道受到拉伸流变，导致强烈的入口弹性效应，表现为熔体在短口模挤出时显著的挤出胀大。
The results show that the extensional flow of melt in convergent die results in intense entrance elastic effect and distinct extrusion swell in conical die with different angles.
结果表明，圆锥短口模挤出过程中，熔体在收敛流道受到拉伸流变，导致强烈的入口弹性效应，表现为熔体在短口模挤出时显著的挤出胀大。
The results show that the extensional flow of melt in convergent die results in intense entrance elastic effect and distinct extrusion swell in conical die with different angles.
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