Abstract
A coupled method for simulating non-steady-state metal flow and temperature distribution in twin roll strip casting is presented. The viscoplastic and the heat conduction finite element methods are used to calculate the metal flow and the temperature distribution, respectively, and the interaction between the metal flow and the temperature distribution is taken into consideration. In the viscoplastic finite element simulation, a spatially fixed element mesh is employed to avoid severe distortion of elements. For the temperature analysis, the effect of latent heat due to solidification of molten metal is dealt with. The calculated profiles of the boundary between the solid and liquid regions in plane-strain twin roll strip casting agree well with those obtained from a model experiment using paraffin wax. In simulation of strip casting of stainless steel, the metal flow and temperature distribution become unstable when the solidified shell between the rotating rolls begins to flow reversely to the molten Pool.
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