溢流法水辅注塑中注水参数对水穿透的影响分析

借助外挂有自主研发的注水系统及模具的注塑系统，采用单因素法实验分析了注水压力、注水温度和注水延迟时间等注水参数对水穿透及产品品质的影响规律及机理。研究发现，注水压力越大，试样残余壁厚越薄，内壁面也更加的光亮；低注水压力下，水的穿透容易出现界面不稳定现象，注水压力越高，水的穿透居中性越好；注水温度对试样残余壁厚的影响不明显；注水延迟时间增加，试样残余壁厚增加，且能有效削弱低注水压力下水穿透的界面不稳定现象。

Experimental Investigation of the Effects of Water Parameters on Water Penetration During Overflow Water assisted Injection Molding Process

Experiments of water assisted injection molding (WAIM) were carried out on a lab developed system to investigate the influences of parameters such as water pressure, water temperature, and water injection delay time on overflow WAIM process. It showed that the higher the water-injection pressure, the thinner the residual wall thickness and the more smooth and bright the inner surface. Water eccentric penetration occurs under low water injection pressure. Increasing water-injection pressure led to a less eccentric water penetration. Water temperature had less influence on the residual wall thickness. Increasing water injection delay time increased the residual wall thickness and reduces the water eccentric penetration under low water-injection pressure effectively.