PRODUCTION OF NON-AGING COLD ROLLED STEEL SHEET FOR DEEP DRAWING, EXCELLENT IN MATERIAL UNIFORMITY IN COIL, BY CONTINUOUS ANNEALING

PURPOSE:To prevent the deterioration of material in the inside and the outside peripheral parts of a coil, resulting from high temp. coiling after hot rolling, by specifying steel composition, slab heating temp., and heat treatment conditions, respectively, at the time of producing a non-aging steel...

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Bibliographische Detailangaben
Hauptverfasser:	ISHII YOSHIO, UEDA TOSHIZUMI, TEFUN MAKOTO, SHIODA KOSAKU, KIMURA NORITOSHI
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 prevent the deterioration of material in the inside and the outside peripheral parts of a coil, resulting from high temp. coiling after hot rolling, by specifying steel composition, slab heating temp., and heat treatment conditions, respectively, at the time of producing a non-aging steel sheet for deep drawing by continuous annealing using a low carbon Al-killed steel slab. CONSTITUTION:A low carbon Al-killed steel slab, consisting of, by weight, 0.01-0.02% C, =10 deg.C/sec. Then, overaging treatment is done for >=30sec by cooling the sheet to a temp. (TF) between 250 and 300 deg.C.