METHOD AND SYSTEM FOR SUPPRESSING SURFACE OXIDE FILM DURING HOT FINISH ROLLING

摘要

A plurality of finishing mills for finish rolling a rolled material are located in a row to configure a finishing mill group. First to third surface coolers for cooling surfaces of the rolled material are located on an entry side of each of first, second and third finishing mills of the finishing mill group, and the amount of cooling water jetted at the rolled material by each surface cooler under a command of a controller is set at 4,000 liters/min~m2, whereby the thickness of scale is restricted to 5 .mu.m or less.