在销钉机简挤出机上,建立非牛顿流体的流动模型,计算出压力场、流动场和螺杆的特性曲线.随着非牛顿特性的降低,螺杆的生产能力减少.随着螺杆上切口的增多,在螺杆切槽内的逆流增加,而产量也减少.机筒上的销钉对挤出特性影响力很小.销钉机筒挤出特性与螺杆上切口的挤出机的挤出特性非常相似.“,”In the core pin cylinder extruder, the flow simulate non - Newtonian fluid of the compound was built using the flow analysis network technique. The pressure field, flow field and screw characteristic curves were calculated, The capacity of screw was decrease with non - Newtonian characteristic reducing. The adverse current in the screw channel was raised with the slices in screw increasing. The effect of the core pin on extrudate characteristic was little. The extrudate characteristic of the pin cylinder was very similar to that of extruder.