ULTRA-HIGH STRENGTH GALVANIZED STEEL SHEET WITH EXCELLENT WELDABILITY AND MANUFACTURING METHOD THEREFOR

The present invention provides a manufacturing method for an ultra-high strength galvanized steel sheet with excellent weldability, the method comprising a step of annealing a cold-rolled steel sheet in an annealing furnace, wherein the annealing time (A) to perform the annealing and the moisture co...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	JANG, Min Ho, PARK, Min Suh, YOOK, Wan, LA, Joung Hyun
Format:	Patent
Sprache:	eng ; fre ; kor
Schlagworte:	ALLOYS 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 FERROUS OR NON-FERROUS ALLOYS 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 SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION 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 provides a manufacturing method for an ultra-high strength galvanized steel sheet with excellent weldability, the method comprising a step of annealing a cold-rolled steel sheet in an annealing furnace, wherein the annealing time (A) to perform the annealing and the moisture concentration (B) in the annealing furnace are controlled on the basis of the product of the positive square root of the annealing time (A1/2) and the value of the natural logarithm of the reciprocal of the moisture concentration ((ln(1/B)). La présente invention concerne un procédé de fabrication d'une feuille d'acier galvanisé à ultra-haute résistance présentant une excellente soudabilité, le procédé comprenant une étape de recuit d'une feuille d'acier laminée à froid dans un four de recuit, le temps de recuit (A) nécessaire à la réalisation du recuit et la concentration d'humidité (B) dans le four de recuit étant commandés sur la base du produit de la racine carrée positive du temps de recuit (A1/2) et de la valeur du logarithme naturel du nombre réciproque de la concentration d'humidité ((ln(1/B)). 본 발명은 냉연 강판을 소둔로 내에서 소둔 열처리하는 단계를 포함하되, 상기 소둔 열처리를 수행하는 소둔시간(A)과 상기 소둔로 내의 수분농도(B)는, 상기 소둔시간의 양의 제곱근(A1/2)과 상기 수분농도의 역수값에 대하여 자연로그를 취한 값(ln(1/B))의 곱을 기준으로 제어되는 것을 특징으로 하는, 용접성이 우수한 초고강도 아연도금강판의 제조방법을 제공한다.