中国塑料 ›› 2014, Vol. 28 ›› Issue (03): 106-111 .DOI: 10.19491/j.issn.1001-9278.2014.03.021

• 机械与模具 • 上一篇    下一篇

基于翘曲变形的薄壁塑件成型工艺优化

肖良红 胡建强   

  1. 湖南省湘潭大学 湖南理工职业技术学院
  • 收稿日期:2013-12-05 修回日期:1900-01-01 出版日期:2014-03-15 发布日期:2014-03-15

Forming Process Optimizing for Injection Molding of the Thin-walled Plastic Parts Based on Warping Deformation

Liang-Hong XIAO   

  • Received:2013-12-05 Revised:1900-01-01 Online:2014-03-15 Published:2014-03-15
  • Contact: Liang-Hong XIAO

摘要: 基于Moldflow软件,对PC、ABS和PC+ABS三种材料薄壁塑件——键盘后盖的翘曲变形进行了数值模拟。按照影响翘曲变形的工艺参数设计了正交模拟试验方案,并完成了翘曲变形的正交模拟试验。据正交模拟实验结果、用极差分析法分析了各工艺参数对翘曲变形的影响程度,得到了最佳工艺参数组合。为类似薄壁塑件的注射成型提供理论和方法指导。

关键词: 翘曲变形, 聚碳酸酯, 丙烯腈-丁二烯-苯乙烯共聚物, 薄壁塑件, 正交试验

Abstract: The warping deformation of three back-cover of keyboards made from PC, ABS, and PC/ABS were numerically simulated with Moldflow software. A orthogonal simulation experiment was designed and performed. The optimal process parameters were obtained by range analysis. For injection molding of PC, ABS, and PC/ABS, the mold temperature being 100, 40,and 50 ℃, melt temperature being 290, 260,and 240 ℃, injection time being 2.0, 1.0,and 2.5 s, pressure holding time being 25, 15,25 s, respectively. The holding pressure was 110 % the corresponding injection pressure for all three materilas.

Key words: warping deformation, polycarbonate, acrylonitrile-butadiene-styrene copolymer, thin-walled plastic part, orthogonal experiment