VALIDATION AND REFINING OF 2-DIMENSIONAL HEAT AND FLUID-FLOW MODEL OFSINGLE ROLL CASTING PROCESS AND ESTIMATION OF HEAT-TRANSFER COEFFICIENT AT CASTER DRUM SHEET INTERFACE/

An attempt is made to validate the mathematical model developed earlie r by the present authors to describe the single roll continuous sheet casting process using experimental data generated on a laboratory scal e easter. Although simulated sheet thickness values do not correspond with experimental values when assuming perfect thermal contact at the easter drum/sheet interface, there is close agreement between the two when the model is modified to incorporate the assumption of imperfect or real thermal contact at the interface. Theoretically predicted temp erature profiles in the easter drum also correspond well with temperat ure values experimentally measured at two locations. A method based on parameter estimation has been proposed to evaluate the heat transfer coefficient at the interface. The effects of various operating paramet ers, e.g. rotational speed, metal head in the tundish, standoff distan ce, nozzle gap, and melt superheat on the heat transfer coefficient ar e examined. (C) 1997 The Institute of Materials.