场协同扭转螺杆对胶料挤出性能的影响规律

Influence of field synergy torsion screw on extrusion performance of rubber materials

利用ANSYS Polyflow软件对普通螺纹螺杆和具有不同分割棱倾角的场协同扭转螺杆进行了非等温瞬态流动模拟,分析了不同螺杆构型对胶料混合、传热和塑化均匀性等挤出性能的影响规律。结果表明,场协同扭转螺杆综合性能普遍优于普通螺纹螺杆,其中以分割棱倾角为45°的螺杆为最优;场协同扭转螺杆引起的螺旋流动改善了胶料速度场、速度梯度场与温度梯度场之间的协同作用,加强了混合与换热,提高了胶料的塑化质量。

Non-isothermal transient flow simulations of conventional threaded screws and field sy-nergy torsion screws with different segmented edge helix angles,were performed using ANSYS Polyflow software.The simulations focused on the effects of these screw structures on rubber material mixing,heat transfer,and plasticizing uniformity during the extrusion process.The results indicated that the overall performance of the field synergy torsion screw was generally superior to that of the conventional threaded screw,with the screw having a segmented edge helix angle of 45°being the optimal configuration.The spiral flow induced by the field synergy torsion screw improved the synergy between the velocity field,velocity gradient field,and temperature gradient field of the rubber material,enhancing mixing and heat transfer,and thereby improving the plasticizing quality of the rubber material.