| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hot-rolling method by which setting of sheet crown and shape schedule for obtaining the target sheet crown and sheet shape after rolling a hot-rolled steel sheet is performed. <P>SOLUTION: This method is a hot-rolling method for obtaining the shape of the target sheet crown on the outlet side of the final stand in a hot-rolling mill train and by which the maximum upper and lower limit values of the sheet shape, a target sheet shape schedule at each rolling stand of the hot-rolling mill train and the upper and lower limit values of the target sheet crown at the final stand are set and the setting calculation of the sheet crown and the shape schedule using the target sheet shape schedule at each rolling stand is performed. In this hot-rolling method of the sheet rolling, when a calculated sheet crown on the outlet side of the final stand is out of the range of the upper and lower limit values of the target sheet crown at the final stand, by performing the above setting calculation by expanding the upper and lower limit values of the sheet shape in stages toward the above maximum upper and lower limit values of the sheet shape from the target sheet shape schedule at each rolling stand from the target sheet shape schedule at each rolling stand, the set value of a sheet crown shape controller is calculated. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
