METHOD AND DEVICE FOR MANUFACTURING HOT-ROLLED STEEL STRIP

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method and a manufacturing device of a hot-rolled steel strip by which temperature at the completion of finish rolling is secured while suppressing the generation of scale in a finishing mill at a low cost. SOLUTION: This hot-rolled steel strip is manufactured by performing the finish rolling of a material to be rolled while cooling the material to be rolled with cooling water between a plurality of rolling stands by using the finishing mill having six or more rolling stands. The cooling of the material to be rolled is performed by jetting the cooling water of≥60°C between the rolling stands on the upstream side of the fourth rolling stand. COPYRIGHT: (C)2004,JPO&NCIPI