| 摘要 |
PROBLEM TO BE SOLVED: To provide a hot rolled ferritic stainless steel sheet with such excellent surface properties as to be free from scale remaining on the surface, defects due to falling down of intergranular corrosion grooves, or the like after pickling. SOLUTION: In pickling with a pickling solution comprising a sulfuric acid solution containing an organic compound having a carboxyl group and a S group, the ratio V<SB>s</SB>/V<SB>Fe</SB>of the concentration V<SB>s</SB>(%) of the organic compound to the Fe ion concentration V<SB>Fe</SB>(g/L) is set at 0.001 or higher and the immersion time, at 30 sec or longer. Thus, the maximum roughness R<SB>max</SB>on the steel sheet surface is kept at 15μm or less and the depth d of intergranular corrosion grooves, at 3μm or less. COPYRIGHT: (C)2004,JPO
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