METHOD FOR MANUFACTURING AUSTENITE STAINLESS STEEL HAVING LOW SILVER THEREON

摘要

A method for manufacturing austenite stainless steel having low silver is provided to suppress silver on the surface of steel by controlling the heating temperature of hot rolling and the content of ferrite. A method for manufacturing austenite stainless steel having low silver comprises: a step for consisting of C 0.150 weight% or less, N 0.07 weight% or less, Si 1.0 weight% or less, Mn 2.0 weight% or less, S 0.020 weight% or less, Cr 16.0 ~ 18.0 weight%, Ni 6.0 ~ 8.0 weight%, Mo 0.5 weight% or less, Cu 0.5 weight% or less, remnant Fe, and inevitable element, and controlling the composition of the steel slab to contain ferrite 2.5 ~ 3.5%; a step for hot-rolling the steel slab having the composition at the temperature range of 1230 ~ 1250°C. The steel slab is hot-rolled in a furnace for 170 ~ 203 minutes.