PRODUCTION OF FERRITIC STAINLESS STEEL SHEET EXCELLENT IN FORMABILITY AND RIDGING RESISTANCE AND FURTHERMORE SMALL IN ANISOTROPY

PURPOSE:To produce a ferritic stainless steel sheet excellent in formability and ridging resistance and furthermore small in anisotropy by subjecting ferritic stainless steel contg. specified amounts of Cr, Al and N to specified hot rolling and thereafter executing cold rolling and finish annealing....

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Bibliographische Detailangaben
Hauptverfasser:	TOGASHI FUSAO, YOKOTA TAKESHI
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PURPOSE:To produce a ferritic stainless steel sheet excellent in formability and ridging resistance and furthermore small in anisotropy by subjecting ferritic stainless steel contg. specified amounts of Cr, Al and N to specified hot rolling and thereafter executing cold rolling and finish annealing. CONSTITUTION:Ferritic stainless steel contg., by weight, 9 to 22% Cr, 0.03 to 0.20% Al and 0.005 to 0.045% N is heated to 1050 to 1200 deg.C and is thereafter subjected to hot rolling. At this time, the rolling is executed at 900 to 1050 deg.C by >=1 pass at >=10% draft and >=600mpm rolling rate, and after that, it is coiled at >=750 deg.C. Subsequently, this coil is subjected to cold rolling and finish annealing. In this way, the ferritic stainless steel sheet of high quality can be obtd. at high efficiency even with hot rolled sheet annealing obviated.