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.
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。
The entry convergent flow pattern was observed with flow visualization technique when the resin melt flowed through a die featuring abrupt contraction in cross-section of channel and axial symmetry.
应用毛细管流变仪测量了在接近实际挤出工艺条件下低密度聚乙烯熔体的流变性质； 应用流动可视化技术，观测了试样熔体流经突然收缩的轴对称口模时的入口收敛流型。
In addition, since the geometry of the flow channel in a spiral mandrel die is quite complex, it is difficult to create the FEM model of the flow channel by those ordinary ways.
此外，由于螺旋式管机头流道的复杂性以及畸形性，用通常方法很难建立起该流道的有限元模型。
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