APPARATUS AND METHOD FOR CONTROLLING SHEET WIDTH OF HOT-ROLLING MILL,申请号JP20080136712-传众专利搜索

APPARATUS AND METHOD FOR CONTROLLING SHEET WIDTH OF HOT-ROLLING MILL

申请公布号：JP2009279639(A)

申请号：JP20080136712

申请日期：2008.05.26

申请公布日期：2009.12.03

申请人：

HITACHI LTD

发明人：HAYASHI KOJI;SHIKAYAMA MASAHIRO;KURIBAYASHI TAKESHI

分类号：B21B37/22;B21B1/32;B21B37/00

主分类号：B21B37/22

摘要：PROBLEM TO BE SOLVED: To control sheet width which does not depend on finish rolling by accurately estimating the amount of shrinkage in finished width in a presetting stage. SOLUTION: In an apparatus for controlling the sheet width of the hot-rolling mill which is provided with a width rolling mill 225 for rolling a heated steel in the width direction, a roughing mill 235 which is arranged adjacently to the width rolling mill and which rolls the steel rolled with the width rolling mill in the sheet thickness direction and a finish rolling mill 245 for producing a hot-rolled coil by further rolling the steel rolled with the width rolling mill and the roughing mill in the sheet thickness direction, and with which the sheet width of the hot-rolled coil is controlled into the target sheet width given by a manufacturing command, a finished width shrinkage estimating/calculating means 121 for estimating and calculating the amount of the shrinkage of the sheet width in the finishing mill and a first sheet width correcting means 120 into the target value for correcting the target sheet width by using the output a calculating means of the amount of the shrinkage of the finishing width are provided and a controlling command calculated on the basis of the target sheet width corrected by the correcting means is output to the width rolling mill 225. COPYRIGHT: (C)2010,JPO&INPIT