METHOD FOR HEAT TREATING FERRITIC STAINLESS STEEL HAVING SUPERIOR DESCALING PROPERTY

摘要

PURPOSE: A method for heat treating ferritic stainless steel having superior descaling property is provided to increase the pickling speed and shorten the time required in removing scale completely by highly maintaining a ratio of Cr/Fe in scale during the annealing heat treatment, thereby relatively lowering a Cr content in a Cr depleted layer. CONSTITUTION: In a method for heat treating ferritic stainless steel, the method for heat treating ferritic stainless steel having superior descaling property comprises the processes of heat treating the ferritic stainless steel at an annealing temperature of 970 to 990 deg.C, thereby controlling a composition ratio of Cr/Fe in scale to 6.5 to 9.3 so that the descaling property is improved; and shortening the pickling time for improving productivity and decreasing the acid consumption.