POWDER-BINDER SEPARATION FOR FILLING SIMULATION OF POWDER INJECTION MOLDING
- 作者：Huan-Chang TsengYuan-Jung ChangChia-Hsiang HsuRong-Yeu Chang
- 会议时间：2014-07-23
- 作者单位：Huan-Chang Tseng,Yuan-Jung Chang,Chia-Hsiang Hsu(CoreTech System (Moldex3D) Co.,Ltd.,ChuPei City,Hsinchu,Taiwan,30265)Rong-Yeu Chang(National Tsing-Hua University,HsinChu City,Taiwan,30043)
- 母体文献：第十一届先进成型与材料加工技术国际研讨会论文集
- 会议名称：第十一届先进成型与材料加工技术国际研讨会
- 会议地点：大连
- 主办单位：中国机械工程学会
- 语种：chi
摘要
Based on the suspension balance model of particle suspension rheology, it is important for powder injection molding (PIM) to numerically calculate particle concentration performed by a full 3D finite-volume analysis system.In a simple wide-gap Couette flow confined between two concentric cylinders for various average volume fractions, the concentration distributions are predicted, and then compared with related experimental data.As a validation, the good agreement between the numerical and experimental results indicates that the concentration gradient successfully simulates the so-called shear-induced particle migration, namely, the powder-binder phase separation.In this work, it is significant to further discuss the effect of powder size on phase separation for a contraction-expansion flow.Thereby, this finding is in good agreement with a practical PIM experience.