Screws with rectangular cross section were studied on the performance of PC melt conveying with various arc radiuses, different screw retraction velocities and screw rotating speeds.

• 对于矩形断面螺杆，主要讨论了圆弧半径变化对PC熔体输送性能及流动状况的影响，并讨论了不同螺杆后退速度、螺杆转速对熔体输送性能的影响。