Solidification and deformation during the start of an aluminium DC cast
- Alcan International Ltd., Banbury (United Kingdom)
- Univ. of Surrey, Guildford (United Kingdom). Dept. of Chemical Engineering
- University Coll. of Swansea (United Kingdom)
The most critical phase of DC casting is the start-up of a cast and it is important to have a good predictive understanding of the thermal and deformation fields that are developing during this stage of the cast. The present paper describes a mathematical model (in both 2 and 3 dimensions) that calculates the temperature, displacement and stress fields that occur in DC casting. The thermal field allows for latent heat evolution as well as for the cooling effect of the mould, the stool and the cooling sprays. The ingot (or billet) is allowed to grow in time and non-planar stool can be modeled. The thermal field is assumed to be independent of the displacement field. Assuming the solidified material behaves as an elasto-viscoplastic solid with the appropriate temperature dependent properties, the displacement and stress fields of the growing ingot can be calculated. Good comparisons with experimental results will be shown for the case of a billet in terms of both temperature histories and displacements.
- OSTI ID:
- 227753
- Report Number(s):
- CONF-9509118--; ISBN 0-87339-297-3
- Country of Publication:
- United States
- Language:
- English
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