ULTRA HIGH STRENGTH HOT ROLLED STEEL SHEET HAVING LOW DEVIATION OF MECHANICAL PROPERTY AND EXCELLENT SURFACE QUALITY AND METHOD FOR MANUFACTURING THE SAME

The present invention relates to an ultrahigh-strength hot-rolled steel sheet which has tensile strength of 800 MPa; is excellent in surface quality, workability, and weldability by using a continuous rolling mode in a continuous casting-rolling direct process; and which remarkably reduces material...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	KONG, JONG PAN, CHUNG, JEA SOOK
Format:	Patent
Sprache:	eng ; kor
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 ROLLING OF METAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The present invention relates to an ultrahigh-strength hot-rolled steel sheet which has tensile strength of 800 MPa; is excellent in surface quality, workability, and weldability by using a continuous rolling mode in a continuous casting-rolling direct process; and which remarkably reduces material deviation in width and length directions of the steel sheet at the same time. The present invention also relates to a manufacturing method thereof. 본 발명은 연주~압연 직결 공정에서 연연속압연 모드를 이용하여 표면품질, 가공성 및 용접성이 우수하고, 동시에 강판의 폭, 길이방향 재질편차를 현저히 감소시킨 인장강도 800MPa급의 초고강도 열연강판 및 그 제조방법에 관한 것이다.