METHOD FOR PREDICTING SHAPE IN WIDTHWISE DIRECTION OF FINALLY SOLIDIFIED PART IN CONTINUOUSLY CAST SLAB AND CONTINUOUS CASTING METHOD

PROBLEM TO BE SOLVED: To provide a prediction method and a control method for the shape in the widthwise direction of a finally solidified part in a continuously cast slab which can numerically represent the shape of a crater end in the widthwise direction of the finally solidified part, can predict the shape upon a change in operating conditions, and can calculate the operation quantity for bringing the shape to a desired shape. SOLUTION: The shape in the widthwise direction of a finally solidified part in a continuously cast slab that is subjected to a low level of rolling reduction by a plurality of rolling rolls disposed near a solidification completion point is represented by a linear bond of a basis function defined by any method of a main component analysis, an independent component analysis, and a Wavelet analysis, and the shape in the widthwise direction of the finally solidified part in the continuously cast slab is predicted from the operation quantity of an operation factor using a digitization model in which the coefficient of the basis function in the linear bond is used as the function of the operation factor of a continuous casting machine. COPYRIGHT: (C)2010,JPO&INPIT