| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To minimize the stop of supply of cooling water to steel strip and minimize occurrence of quality defects due to the stop of the supply of the cooling water while avoiding operation trouble caused by the unstable passing of the steel strip when cooling the hot-rolled steel strip on a run out table. <P>SOLUTION: In a method of manufacturing the hot-rolled steel strip, the hot-rolled steel strip obtained by being rolled with a hot rolling mill is cooled by the cooling water supplied from a cooling water jetting means while it is passed on the run out table, and then is wound around a coiler. In the steel strip passing on the run out table, abnormal displacement of the steel strip above a pass line (the steel strip conveying surface of the run out table) is detected by a detecting means, and at least a part of the cooling water jetting means stop the supply of the cooling water to the steel strip based on the detection of the abnormal displacement of the steel strip. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
