On base of analysis of pumping screw elements ,reverse screw elements and kneading block elements,basic principle of tip variant,diameter variant and depth variant screw configuration has been...

• 正向螺纹元件、反向螺纹元件、捏合块元件的上述特性定量或定性分析有助于螺杆组合的理论分析,结合挤出过程各阶段对螺杆组合基本要求提出了变头变径变深螺杆组合原则。