HEAT TREATMENT METHOD METHOD OF MANUFACTURING STEEL SHEET USING THE SAME AND STEEL SHEET MANUFACTURED BY THE SAME

The present invention relates to a heat treatment method, a steel sheet manufacturing method using the same, and a steel sheet manufactured by the manufacturing method. The heat treatment method according to one embodiment of the present invention relates to a process of heat treatment of a steel sh...

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Bibliographische Detailangaben
Hauptverfasser:	SONG YON KYUN, PARK RHO BUM, PARK JOONGCHUL, KANG KICHEOL
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	APPARATUS THEREFOR CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	The present invention relates to a heat treatment method, a steel sheet manufacturing method using the same, and a steel sheet manufactured by the manufacturing method. The heat treatment method according to one embodiment of the present invention relates to a process of heat treatment of a steel sheet in a continuous annealing line. A heat treatment atmosphere of the continuous annealing line is an inert atmosphere, which has equal to or more than 99 wt% of nitrogen and equal to or less than 1 wt% of sum of oxygen and hydrogen, while a dew point temperature of the steel sheet is in a range of 0 to -80°C. 본 발명은 열처리 방법, 이를 이용한 강판 제조방법 및 이 제조방법으로 제조된 강판에 관한 것이다. 본 발명의 일 실시예에 의한 열처리 방법은 강판을 연속소둔라인에서 열처리하는 공정에 있어서, 연속소둔라인의 열처리 분위기는, 강판을 이슬점 온도가 0 내지 -80℃ 범위이면서, 중량%로, 질소 99% 이상, 산소 및 수소의 합이 1% 이하인 불활성 분위기이다.