| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a rolling mill equipped with a rolling bearing, and a method for controlling sheet thickness, by which highly precise sheet thickness control is enabled. <P>SOLUTION: A rolling mill which uses a rolling bearing for a roll chock is provided with a target roll value setting means for setting a target roll position, a temperature estimating means for estimating a temperature of the rolling bearing, a thermal expansion amount calculating means for calculating an amount of thermal expansion of the rolling bearing from an estimated temperature of the rolling bearing, and a target roll value correcting means for correcting a target roll position on the base of a calculated amount of thermal expansion of the rolling bearing. In the method for controlling sheet thickness in the rolling mill which uses the rolling bearing for the roll chock, the sheet thickness is controlled by following steps of: starting rolling after the target roll position is set, calculating the thermal expansion amount of the rolling bearing from the estimated temperature of the rolling bearing, and correcting the target roll position on the base of the calculated amount of thermal expansion of the rolling bearing. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
