Patent ID: 6067836
Filing Date: 2000-05-30
Classification: B21B

Abstract:
A method for suppressing the formation of scale defects during hot finish rolling of a strip material using a plurality of finishing mills provided in a row, comprising:cooling a surface portion of the strip material at a location upstream of each of a predetermined number of the finishing mills in a transport direction of the strip material, said location being 1.8 to 3.0 m upstream from a center of each of the predetermined number of the finishing mills to suppress the formation of scale defects in surfaces of the strip material and to enable the strip material to be heated to at least 850.degree. C. after hot finish rolling,wherein the cooling is performed prior to and between a series of sequential finish rolling processes until a last of the predetermined number of finishing mills is reached, andwherein the last of the predetermined number of finishing mills is the third finishing mill.