ULTRA-HIGH STRENGTH STEEL SHEET HAVING EXCELLENT HOLE EXPANSION RATIO, AND METHOD FOR MANUFACTURING SAME

The present invention pertains to a steel sheet used in automobiles etc. and, more specifically, to an ultra-high strength steel sheet having an excellent hole expansion ratio, and a method for manufacturing same. La présente invention concerne une tôle d'acier utilisée entre autres dans des au...

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Bibliographische Detailangaben
Hauptverfasser:	KONG, Jong-Pan, HAN, Sang-Ho, KIM, Eun-Young, BANG, Chan-Woo
Format:	Patent
Sprache:	eng ; fre ; kor
Schlagworte:	ALLOYS AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL 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 MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING 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
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Beschreibung
Zusammenfassung:	The present invention pertains to a steel sheet used in automobiles etc. and, more specifically, to an ultra-high strength steel sheet having an excellent hole expansion ratio, and a method for manufacturing same. La présente invention concerne une tôle d'acier utilisée entre autres dans des automobiles et, plus spécifiquement, une tôle d'acier à ultra haute résistance présentant un excellent taux d'expansion de trous, et son procédé de fabrication. 본 발명은 자동차 등에 사용되는 강판에 관한 것으로서, 구멍 확장성이 우수한 초고강도 강판 및 그 제조방법에 관한 것이다.