METHOD FOR ROLLING HOT ROLLED STEEL PLATE AND HOT ROLLING APPARATUS

摘要

PROBLEM TO BE SOLVED: To solve the problem that temperature fluctuations in the longitudinal direction of a rough bar steel of hot rolled steel plate and temperature fluctuations resulting from a skid mark cannot be governed. SOLUTION: When a hot rolled steel plate 3c is produced by performing a finish rolling after feeding the rough bar steel 3b to the finish rolling mill 5, rolling the rough bar steel 3b using a rough rolling mill 4, the rough bar steel 3b fed between the rough rolling mill 4 and the finish rolling mill 5 are heated over all the portion in the steel width direction and concurrently the rough bar steel 3b is water cooled for finishing rolling.