PICKLING METHOD FOR HOT ROLLED AND ANNEALED STAINLESS STEEL SHEET

摘要

PROBLEM TO BE SOLVED: To provide a method for pickling a hot rolled and annealed stainless steel sheet having excellent whiteness after pickling in the pickling method for descaling the hot rolled and annealed stainless steel sheet by mixed acids.;SOLUTION: The steel sheet is subjected to a pickling treatment by using an aqueous mixed acid solution containing chlorine ions of a range of a region enclosed by points A, B, C, D, E, F, G and H shown in Figure of the attached figures in nitric acid as the mixed acids of hydrofluoric acid and nitric acid.;COPYRIGHT: (C)2001,JPO