Modeling of heat flow and solidification process in a strip caster
Book
·
OSTI ID:227813
- Kungliga Tekniska Hoegskolan, Stockholm (Sweden). Dept. of Materials Processing
- Outokumpu Copper R and D, Vaesteraas (Sweden)
The heat flow and solidification process of a strip caster have been experimentally studied. Numerical simulations have been used to compare the experimental results with theoretical models used in the simulations. Temperature measurements in the mould, after the mould and with thermocouples inserted in the solidifying metal have been performed. Doping of the liquidus front with lead addition to the liquid has been made in order to study the shape of the liquidus front and the position of the liquid pool end. The theoretical analysis consists of numerical simulations of the solidification process with a new solidification model which accounts for formation of lattice defects during solidification and the condensation of the same defects. The results from these simulations are compared with results from simulations with the classical model. The measurements showed that the temperature in the graphite mould varied between 825 C at the meniscus level down to 200 C at the end of the mould. The temperature in the mould casing varied between 75 to 40 C. The liquid pool length for brass was {approximately}0.22 m and for pure copper {approximately}0.17 m for normal casting speeds. Temperature measurements in the graphite and a visual analysis of the graphite mould indicated that an airgap between casted strip and graphite is formed at a position corresponding to the liquid pool depth. A periodic fluctuation of temperatures in the mould plate can be seen both for copper and brass castings.
- OSTI ID:
- 227813
- Report Number(s):
- CONF-9509118--; ISBN 0-87339-297-3
- Country of Publication:
- United States
- Language:
- English
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