角窗塑件注射压缩成型工艺数值模拟研究  

Numerical simulation research on injection-compression molding process of corner window plastic parts

作　　者：张果 郭会师 蒋晶[2] 李倩[2] ZHANG Guo;GUO Huishi;JIANG Jing;LI Qian(College of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450001,China;National Center for International Joint Research of Micro-Nano Moulding Technology,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]郑州轻工业大学材料与化学工程学院,河南郑州450001 [2]郑州大学微纳成型技术国际联合研究中心,河南郑州450001

出　　处：《轻工学报》2020年第3期82-87,共6页Journal of Light Industry

基　　金：国家自然科学基金项目(51802290)。

摘　　要：利用Moldflow软件结合正交试验的数值模拟方法,研究了聚碳酸酯角窗塑件3处典型位置厚度方向上脱模后残余应力的分布情况,优化了角窗塑件注射压缩成型工艺,在此基础上,选取主要因素考察了主要工艺参数对制品残余应力的影响规律.结果表明:制品3处典型位置厚度方向上脱模后残余应力的分布呈现拉-压-拉的三区域分布规律;最佳工艺参数组合为模具温度105℃,熔体温度315℃,注射时间3 s,压缩力882 kN,压缩距离1.0 mm,压缩速度5 mm/s,延迟时间0 s;熔体温度、延迟时间、压缩距离是影响制品残余应力的主要工艺参数,且塑件次表层和中心层的残余应力随熔体温度升高而减小,而塑件厚度方向各层的残余应力随延迟时间、压缩距离的增加而增大.Through numerical simulation method which combined Moldflow software with orthogonal experiment,the residual stress distribution after demoulding in the thickness direction of three typical positions of polycarbonate corner window plastic parts was studied,and the injection compression molding process of corner window plastic parts was optimized.On the basis,the main factors were selected to investigate the influence of the main process parameters on the residual stress of the product.The results showed that the residual stress distribution after demoulding in the thickness direction of three typical locations of the product conforms to the three-region distribution of tension-compression-tension.The optimum combination of process parameters was that the mold temperature was 105℃,the melt temperature was 315℃,the injection time was 3 s,the compression force was 882 kN,the compression distance was 1.0 mm,the compression speed was 5 mm/s,and the delay time was 0 s.Melt temperature,delay time,compression distance were the main process parameters that affect the residual stress of the product,and the residual stress of the subsurface layer and the center layer of the plastic part decreased with the increase of the melt temperature,while the residual stress of each layer in the thickness direction of the plastic part increased with delay time and compression distance.

关 键 词：注射压缩成型 残余应力 正交试验 数值模拟 

分 类 号：TG76[金属学及工艺—刀具与模具]