There have existed some problems in actual situation for the mathematical model of kneading pieces in traditional extruder so that the processing quality can't be guaranteed.
传统的挤出机捏合块的数学模型在实际运用过程中存在一些问题，不能很好地保证加工质量。
A physical model with consideration of both gaps between kneading block and barrel and between kneading disks and real shape of nip region is developed.
建立的流场物理模型考虑了捏合块与机简之间的啮合间隙和捏合盘与捏合盘之间的间隙，并且考虑了啮合区的实际空间形状。
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