| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for rolling a steel plate which controls with high accuracy the distribution of wall thickness (plate crown) in the width direction of the material to be rolled. SOLUTION: In the rolling method the sheet crown of a material to be rolled is controlled by providing the upper and lower back-up rolls, and the upper and lower work rolls, imparting crowns of cosine function, sine function, and curves for more than three dimension to the upper and lower work rolls so as to be mutually in point symmetry and rolling the material to be rolled while relatively moving the upper and lower work rolls in the axial direction to each other. In this case, by forming the crowns of the upper and lower work rolls by curves of the function consisting of the function and the one-dimensional function, and imparting a value by which the shaft center of the back-up roll and the shaft center of the work roll in the contact condition of the back-up roll and the work roll to which rolling load is imparted by coefficient of the one-dimensional function, the material to be rolled is rolled.
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