| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a cold rolled steel plate capable of preventing deterioration of a plate shape and the generation of plate fracture, while controlling a plate profile with a high degree of accuracy in the cold rolling method of the steel plate by a tandem rolling mill provided with one or more rolling stands to shift a unilateral taper work roll in the axial direction. SOLUTION: In the cold rolling method of the steel plate by the tandem rolling mill provided with one or more rolling stands to shift a work roll 3x which constitutes a taper portion in a unilateral end portion to the axial direction, a profile changeable scope of the rolling stock plate width end portion is set per each rolling stand from an arc length of contact between the work roll determined from rolling conditions of each rolling stand and the rolling stock, and from the deformation resistance of the rolling stock and rolling is performed by positioning the taper starting point of the work roll within the profile changeable scope of the rolling stock plate width end position. By this way, deterioration of the plate shape and the generation of plate fracture can be prevented while controlling the plate profile with a high degree of accuracy.
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