HEATING METHOD OF HIGH TEMPERATURE RESISTANT 310S STAINLESS STEEL SLAB

摘要

PURPOSE: To improve the surface quality of a hot rolled 310S stainless steel slab by lowering excess oxygen portion in heating furnace. CONSTITUTION: In the heating method of austenitic 310S stainless steel slab comprising C 0.08wt.% or less, Cr 24-26wt.%, Ni 19-22wt.%, Mn 2wt.% or less, Si 1.5wt.% or less, B 0.01wt.% or less, a balance of Fe and other inevitable impurities for hot rolling by using COG or BFG, the present invention is characterized in that volume rate of excess oxygen in heating furnace is controlled to be less than 1.5%.