摘要
利用Moldfl ow对Taguchi法和L16(45)正交表所设计出的聚丙烯(PP)薄壁制品注塑方案进行仿真,研究发现:注射时间、保压时间、保压压力是影响PP薄壁制品翘曲变形的主要因素,并且得到最优注塑参数为:注塑机料筒温度180℃,模具温度75℃,注射时间3.0 s,保压时间3.5 s,保压压力65 MPa。另外,通过CAE模流分析软件中PP薄壁制品注塑加工的翘曲变形进行仿真发现,正交试验所获得的优化工艺的总翘曲变形量为1.417 mm,翘曲变形百分比约为3.30%。其中由于冷却引起的翘曲变形量约为0.159 mm,而由收缩和取向引起的翘曲变形分别约为1.853 mm和0.904 mm。
Through simulation investigation on injection molding processes of polypropylene(PP) mirror frame designed by L16(45) orthogonal layout by the moldflow software,the injecting time,holding time and holding pressure were proved to be the dominant factors on warping deformation. The modified process parameters were obtained as 180℃of injection molding machine barrel temperature,75℃of mold temperature,3.0 s of injecting time,3.5 s holding time and 65 MPa of holding pressure. The modified parameters were simulated on CAE mode flow analysis software,the warping deformation value and its ratio were decreased to 1.417 mm and 3.30%. The warping deformation value originated from cooling,contraction and orientation were 0.159,1.853 and 0.904 mm.
出处
《工程塑料应用》
CAS
CSCD
北大核心
2016年第4期69-73,共5页
Engineering Plastics Application
