Surface grain refining hot-shearing method and product of surface grain refining hot-shearing

A surface grain refining hot-shearing method which comprises heating and keeping a steel sheet in a temperature range of Ac3 to 1400 DEG C to austenitize the steel sheet, setting the resulting steel sheet on a die to conduct the shearing of the sheet, and then hardening the sheared workpiece by quen...

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Bibliographische Detailangaben
Hauptverfasser:	SETO ATSUSHI, KAWASAKI KAORU, SEKITO YOSHIHITO, SUZUKI TAMAKI, MATSUNO TAKASHI
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 MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	A surface grain refining hot-shearing method which comprises heating and keeping a steel sheet in a temperature range of Ac3 to 1400 DEG C to austenitize the steel sheet, setting the resulting steel sheet on a die to conduct the shearing of the sheet, and then hardening the sheared workpiece by quenching, wherein the initiation temperature of the shearing is adjusted to a temperature (DEG C) falling within a range between Ar3 plus 30 DEG C and Ar3 plus 140 DEG C, Ar3 being a measured value obtained by Ar3 measurement of the steel sheet.