| 摘要 |
<p>PROBLEM TO BE SOLVED: To remarkably reduce the unbalance of thickness in the width direction without necessitating the installation of a straightening device and special rolling mill. SOLUTION: In the manufacturing method of a thick steel plate by camber control in which rolling is executed while suppressing the horizontal bend of the steel plate, in the case the steel plate which is divided into plural small plates after rolling is rolled, first, the allowance of camber is set about an individual plate (S2), next, the allowance of camber of the whole steel plate is calculated based on the allowance of camber obtained about all the small plates (S3). Within the range of the obtained allowance of camber of the whole steel plate and within the allowance of camber which is decided from the restriction from the viewpoint of equipment (S4), rolling is executed while controlling the camber of the steel plate (S5).</p> |
