Three-dimensional thermal stress analysis of the mould during high-speed casting of steel

On the basis of the calculated mould temperature, a three-dimensional thermal stress model of the mould is established. A corresponding finite element method program is developed with six-face and eight-node isoparameter elements. The Newton method is used to solve the stress equations. Making using of the stress model, the thermal distortion and stress distribution of the mould are obtained when the thickness of the mould wall is different. Experimental data have been used to validate the model. From the result, it is proved that the mould stress is less than its yield strength and does not result does in residual deformation.