Sulfur-nitric acid-free acid treatment of Cr-based stainless steel sheets

摘要

More particularly, the present invention relates to a method for acid pickling in which a Cr-based stainless steel sheet is metabolized, and more particularly, to a method for producing a sulfur-Nitric acid by pickling with a mixed acid composed of nitric acid.;The sulfur-nitric acid single tax method of the Cr-based stainless steel sheet of the present invention is a continuous-annealing process of a Cr-based stainless steel sheet 103 In the pickling temperature range, 18 22 Sulfuric acid and 16 20 Nitric acid mixed solution having a nitric acid solution component.