粉末注射成形充模流动过程模壁凝固层增长的计算与模拟

来源期刊：中国有色金属学报2008年第3期

论文作者：郑洲顺 曲选辉 韩旭里 张国栋

文章页码：511 - 511

关键词：粉末注射成形；微流边界层；模壁凝固层；数值模拟；

Key words：powder injection molding; boundary layer of microflow; solidification layer on wall of cavity; numerical simulation

摘    要：

Abstract: The existence of solidification layer on the wall of cavity in powder injection molding filling process by boundary layer theory of microflow was reviewed. The structure of solidification layer on the wall of cavity was analyzed. Based on the computation method of L.Prandtl boundary layer and the definition of boundary layer of microflow, the mathematical model of solidification layer on the wall of cavity in powder injection molding filling process was established. The results of the numerical simulation indicate that the thickness of the solidification layer on the wall of feed channel can be nicely described by the mathematical model. Some useful information for predicting and controlling the solidification on the wall of cavity can be supplied by the mathematical model established.

基金信息：国家重点基础研究发展计划资助项目
湖南省科技计划博士后专项基金资助项目