应用Taguchi实验设计法最小化ABS注塑制品翘曲变形量

Minimization of warpage of plastic injection molded parts of ABS by Taguchi method

运用Taguchi DOE技术研究了工艺参数对丙烯腈-丁二烯-苯乙烯共聚物(ABS)注塑制品翘曲变形的影响,并获得优化的工艺参数以使制品的翘曲变形量最小。文中以碱性蓄电池盖为例,利用L9(34)正交矩阵进行实验,并采用标准变量分析法(ANOVA)对熔体温度、注射时间、冷却时间、保压压力等工艺参数对制品翘曲变形的影响程度进行了研究,结果表明,在所选工艺参数中,保压压力和熔体温度对翘曲变形的影响程度最大。

The Taguchi DOE （design of experiment） technique was conducted to investigate the influence of process parameters on the warpage in injection molded part made by Acrylonitrile-Butadiene-Styrene copolymer （ABS）, and optimize the process conditions by using an alkaline storage battery cover. An L9 （3^4） orthogonal array design based on the Taguchi method was conducted to minimize the warpage of injection-molded part, and the relative significance of each factor on the warpage by melt temperature, filling time, cooling time and holding pressure was investigated based on a standard analysis of variance （ANOVA）. The investi-gation results indicated that for the battery cover, among factors selected in the main experiments, holding pressure and melt temperature were found to be the principal factors affecting the warpage of the injection molded part.