It is also predicted that the orientation ratio responds to the die channel length, the channel area expanding ratio of die and plastics melt viscosity.
此外还预测了扩张机头流道长度，面积扩张比、塑料熔体粘度对取向度也有影响。
According the structure characteristics of oil filling pipe, combining production experience, designed expanding and necking die.
针对加油管的结构特点，结合企业生产经验，给出了连续扩。
Expanding and closing technique of core-die of longitudinal seam occlusion machine for automobile silencer and design calculation of such mechanics have been introduced.
介绍了汽车消声器纵缝咬边胀合技术及其咬边芯模机构的设计计算。
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