MATHEMATICAL MODELING OF THE HORIZONTAL DC CASTING PROCESS FOR T-INGOT PRODUCTION
Horizontal direct chill (HDC) casting is a continuous process that offers improved efficiency compared to traditional semi-continuous vertical direct chill casting. While considerable progress has been made in understanding VDC casting using mathematical models, little has been reported in this regard for HDC casting of aluminum alloys. As part of a continuous improvement program supporting HDC T-ingot production, a comprehensive mathematical model has been developed which describes the heat transfer and fluid flow occurring during steady-state conditions. The model considers the effects of solidification, buoyancy, and turbulence on transport within a 3- dimensional domain. The boundary conditions for primary and secondary cooling are based on industrial and lab scale characterization. The model has been validated by comparing sump predictions to measurements of drained sumps from industrial T- ingots; as well as comparison of measured and predicted secondary dendrite arm spacing (SDAS) in regions of fast and slow cooling. A comparison of the predictions and measurements for foundry aluminum alloy A356, indicates that the model accurately predicts the combined heat transfer and fluid flow phenomena occurring during T-ingot production.
Aluminum Alloys Horizontal DC Casting Mathematical Modeling Fluid Flow Heat Transfer
M. Lane M. DiCiano D.M. Maijer S.L. Cockcroft A. Larouche
Department of Materials Engineering, University of British Columbia, Vancouver, BC, Canada, V6T 1Z4 Alcan Int. Ltd., Arvida Research and Development Centre, 1955, Boul. Mellon C.P. 1250, Jonquiere, Qc
国际会议
大连
英文
455-464
2007-08-19（万方平台首次上网日期，不代表论文的发表时间）