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SynopsisThe bending theory of continuous beam has been applied to the analysis of bulging in continuously cast slabs. A simple algorithm was formulated to transform a through-thickness distribution of creep strain in a shell into the shell curvature, and equations were given for the analysis model of continuous beam with multi-supports. Simulations have proved that the model satisfactorily predicts the variations of bulging profile with multi-roll arrangement and the transitional bulging including unsteady fluctuations.

The effects of die dimensions on curvature-extrusion curved rectangular bars were investigated by experiments and numerical simulations. We conducted simulations and experiments of rectangular bar production using various die dimensions. The calculated trend of curvature showed good agreement with the experiment results, thereby validating the numerical simulation results. The curvature increases concomitantly with increasing exit height and exit width. The effect of die thickness on curvature is slight. Regarding the conditions of die dimensions, the exit height is the most important factor that affects the curvature. The curvature increases when the difference in exit velocity becomes large. The generation of a dead metal area, along with container configurations, affects the curved rectangular bar curvature.Results show that the curvature is determined by the difference in exit velocity, in conjunction with the die dimensions.

The effects of die dimensions on curvature-extrusion curved rectangular bars were investigated by experiments and numerical simulations. We conducted simulations and experiments of rectangular bar production using various die dimensions. The calculated trend of curvature showed good agreement with the experiment results, thereby validating the numerical simulation results. The curvature increases concomitantly with increasing exit height and exit width. The exit height ratio affects the curvature about 2.1 times more than the exit width ratio does. The effect of die thickness on curvature is slight. Regarding the conditions of die dimensions, the exit height is the most important factor that affects the curvature. The curvature increases when the difference in exit velocity becomes large. The generation of a dead metal area, along with container configurations, affects the curved rectangular bar curvature. Results show that the curvature is determined by the difference in exit velocity, in conjunction with the die dimensions.

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