Paper Title:
Modeling of Mold Filling Process of Al Casting and Validation with X-Ray In-Situ Observation
  Abstract

To describe the shape and location of free surfaces in the mold filling simulation, parameters including volume filled ratio, surface dimensionless distance, and surface filled ratio for the DFDM (Direct Finite Difference Method) elements were proposed. A model of mold filling process was established, considering the mass, momentum and heat transfer in the vicinity of free surface. It had been applied to an experimental Al casting. In-situ observation and record of actual mold filling process of the casting with special X-ray apparatus were carried out, and were used to validate the simulation results. The validation showed that the model could predict the mold filling process well. It was found that back pressure of gas in the mould cavity had minor effect on change of liquid flow when using pressurized feeding system and sand mould with good air permeability.

  Info
Periodical
Materials Science Forum (Volumes 532-533)
Edited by
Chengyu Jiang, Geng Liu, Dinghua Zhang and Xipeng Xu
Pages
841-844
DOI
10.4028/www.scientific.net/MSF.532-533.841
Citation
H. D. Zhao, I. Ohnaka, "Modeling of Mold Filling Process of Al Casting and Validation with X-Ray In-Situ Observation", Materials Science Forum, Vols. 532-533, pp. 841-844, 2006
Online since
December 2006
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Price
$32.00
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