METHOD FOR PICKLING NICKEL STAINLESS STEEL STRIP

PURPOSE: To provide a method for pickling of Ni stainless sheets using sulfuric acid with which an excellent surface condition is obtainable by application of ordinary pickling using sulfuric acid which is adopted to Cr stainless steels as well to descaling and pickling of the Ni stainless steel she...

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Bibliographische Detailangaben
Hauptverfasser:	MIYAZAKI RITSUSHI, SHIMOMURA RYOICHI, HIRAMOTO YUJI, NISHIMURA MOTOI, KANEYASU TAKAYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHEMICAL SURFACE TREATMENT CHEMISTRY CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PURPOSE: To provide a method for pickling of Ni stainless sheets using sulfuric acid with which an excellent surface condition is obtainable by application of ordinary pickling using sulfuric acid which is adopted to Cr stainless steels as well to descaling and pickling of the Ni stainless steel sheets. CONSTITUTION: The Ni stainless steel strips subjected to hot rolling are mechanically descaled and are then immersed into a sulfuric acid soln. of a concn. of >=100g/l kept at >=70 deg.C. The mechanism descaling of the hot rolled Ni stainless steel strips is executed over >=30% of the entire surface, by which the descaling effect thereof is improved.