FABRICATION METHOD OF HOT ROLLED STEEL PLATE FOR ENAMEL

摘要

PURPOSE: A process for fabricating a hot rolled steel plate with a thickness of greater than 2 mm for enamel without fish scale is provided. CONSTITUTION: The method includes the steps of hot rolling an Al-killed steel comprising C 0.01 to 0.1 wt.%, Mn 0.1 to 1.0 wt.%, 0.05 wt.% or less of P, 0.05 wt.% or less of S, 0.015 wt.% or less of N and Ti 0.05 to 0.2 wt.% wherein Ti content is greater than the total content of C and N by at least three times; terminating hot rolling at 830 to 900°C; coiling the hot rolled steel plate at less than 700°C; and temper rolling it at a reduction ratio of 1 to 10 % when the surface temperature of the steel plate is 25 deg.C or less.