热流道顺序浇注成型移除熔接痕研究

为了有效移除注塑制品中的熔接痕，深入分析了熔接痕的形成过程和采用热流道顺序浇注成型移除熔接痕的机理，并使用模流分析软件Moldflow对顺序浇注成型移除熔接痕的过程进行了有限元模拟。模拟分析结果表明，随着阀浇口不同的开闭时机，顺序浇注成型可以有效地控制熔接痕的位置及长度，改善熔接区域的外观和性能，有效避免熔接痕的产生。实验表明，采用顺序浇注成型时制品的熔接痕已基本消除.

Research on Using Sequential Injection Molding to Remove Weld Lines

In order to eliminate the weld lines on the plastic injection molded parts,the morphology of weld lines and the mechanism of removing weld lines by using sequential injection molding have been analyzed.Sequential injection molding was simulated based on the FEM model by means of software Moldflow.It showed that the delay time of second valve gate controlled the position and length of the weld-line.By using sequential injection molding,the weld lines on the molded parts were essentially eliminated.