The thermal transport characteristics of the innovatively proposed field-coordinated torsion screw at different rotational speeds were simulated and analyzed through numerical simulation using the Polyflow software,and their ther-mal transport performance was systematically investigated through combining parameters such as temperature distribu-tion,convective heat transfer coefficient,viscosity,pressure,etc.and compared with conventional screws as well.The results indicated that the temperature uniformity of the field-coordinated torsion screw with a torsion structure was improved alone with an increase in the convective heat transfer coefficient.The heat transfer effect of the entire system was also strengthened,in which the screw B exhibited the optimal heat transfer performance.Taking EPDM as a raw material,an experimental investigation was performed for the heat transfer performance of the conventional screw and field-coordinated torsional screw using a torsional extrusion technology combined with the parameters such as radial tem-perature difference and heat transfer coefficient of the machine head.The obtained results were consistent with the simu-lation,proving that the field-coordinated torsion screw can strengthen heat transfer and improve plasticization uniformi-ty.
关键词
扭转元件排布/换热性能/对流换热系数/塑化均匀性/压力特性
Key words
torsion element layout/heat transfer performance/convective heat transfer coefficient/plasticization uniformity/pressure characteristics
维普
万方数据