Modeling of mold filling of Al gravity casting and validation with X-ray in-situ observation

被引：21

作者：

Zhao, Haidong ^{[1
]}

Ohnaka, Itsuo ^{[1
]}

Zhu, Jindong ^{[2
]}

机构：

[1] Osaka Univ, Dept adapt Machine Syst, Suita, Osaka 5650871, Japan

[2] Univ British Columbia, Dept Met & Mat Engn, Vancouver, BC V6T 1Z4, Canada

来源：

APPLIED MATHEMATICAL MODELLING | 2008年 / 32卷 / 02期

关键词：

mold filling; simulation; free surface; in-situ X-ray observation; Al gravity casting;

D O I：

10.1016/j.apm.2006.11.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the mold filling simulation, element parameters including volume filled ratio, surface dimensionless distance, and surface filled ratio, were proposed to describe the shape and location of free surfaces in DFDM (Direct Finite Difference Method) elements. A model of the filling process was established, specially taking into account the mass, momentum and heat transfer in the vicinity of free surfaces. It was applied to an experimental AC4C (Al-7Si-0.4Mg) gravity casting. With a special X-ray apparatus, in-situ observation and record of actual mold filling process of the casting were carried out. The simulation results were validated and analyzed by comparing with the observation. The liquid flowing in the casting runner and ingate as well as the evolution of free surfaces were analyzed and discussed. (c) 2006 Elsevier Inc. All rights reserved.

引用

页码：185 / 194

页数：10

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