temper rolling method of the high-tensile steel, temper rolling facilities and rolling line

摘要

PROBLEM TO BE SOLVED: To provide a temper rolling method by which a high tension metallic strip having tensile strength of ≥1,100 MPa in a tensile test can be manufactured efficiently in the state that the strip has an excellent sheet shape, is free from sheet breakage and has good surface roughness.;SOLUTION: In a temper rolling method, a metallic strip having tensile strength of ≥1,100 MPa in a tensile test is temper-rolled. In temper rolling equipment provided with a 2-stand temper rolling mill for performing the temper rolling, there is provided the temper rolling method by which rolling is performed by taking a tension load ratio σ/σ_y which is a value obtained by dividing the interstand tension σ of the temper rolling equipment by the tensile strength σ_y of the metallic strip as the range of 0.12-0.48.;COPYRIGHT: (C)2013,JPO&INPIT