| 摘要 |
PROBLEM TO BE SOLVED: To improve the wound form of a coiled hot-rolled steel sheet by aligning the coil edges thereof.SOLUTION: In production of a coiled hot-rolled steel sheet by cooling a belt-like hot-rolled steel sheet on a hot-run table after forming the belt-like hot-rolled steel sheet by hot-rolling a steel material using a hot rolling mill, and by taking up it on a coiler, an off-center amount of a width-directional center of the belt-like hot-rolled steel sheet during taking up on the coiler, to a width-directional center of a table roller of the hot-run table, is measured by an off-center measuring instrument provided on the hot-run table. When the off-center amount exceeds a prescribed threshold value, it is determined that meandering occurs in conveyance of the belt-like hot-rolled steel sheet. In such a case, an outer peripheral speed of the table roller in the hot-run table is decelerated lower than a conveyance speed of the belt-like hot-rolled sheet, and centering of the belt-like sheet with respect to the table roller is performed by causing difference between the conveyance speed of the belt-like hot-rolled sheet and the outer peripheral speed of the table roller. |
