基于正交试验的PP车门内饰板注塑工艺参数优化

摘要

The simulation of injection molding for the door trim panel of automobile was performed with analytical software Moldflow based on orthogonal experiments. The effects of melt temperature,mold temperature, injection time,packing pressure and packing time on the warpage of the door trim panel were analyzed. The optimal parameters that could reduce the warpage of the door trim panel were obtained,and the correctness of the parameters was proved by practical production. The minimum warpage which is 8.33 mm was reached by simulation with Mold-flow software when the mold temperature is 35 ℃,the packing time is 18 s,the packing pressure is 60 MPa,the melt temperature is 220 ℃,and the injection time is 7 s. The warpage of t he door trim panel is 8.85 mm with the optimal parameters in practical injection molding,which is basically consistent with the simulation result.%采用正交试验方法，利用Moldflow分析软件对汽车车门内饰板进行注塑成型模拟，分析了熔体温度、模具温度、注射时间、保压压力和保压时间等对注塑件翘曲变形的影响，找出了可以降低车门内饰板翘曲变形量的最佳工艺参数，并通过实际生产验证了所选工艺参数的正确性。当模具温度为35℃、保压时间为18s、保压压力为60MPa、熔体温度为220℃、注射时间为7s时，车门内饰板的翘曲变形量最小，Moldflow软件模拟出的最小值为8.33mm；而采用优选工艺参数进行实际注塑得到的车门内饰板翘曲变形量为8.85mm，与模拟结果基本吻合。