Ultra-high strength galvanized steel sheet with excellent weldability and method for manufacturing the same

The present invention provides a method for manufacturing ultra-high strength galvanized steel sheets with excellent weldability, which is characterized by including the step of annealing a cold rolled steel sheet in an annealing furnace, wherein the annealing time (A) for performing the annealing h...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	LA JOUNG HYUN, JANG MIN HO, PARK MIN SUH, YOOK WAN
Format:	Patent
Sprache:	eng ; 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 method for manufacturing ultra-high strength galvanized steel sheets with excellent weldability, which is characterized by including the step of annealing a cold rolled steel sheet in an annealing furnace, wherein the annealing time (A) for performing the annealing heat treatment and the moisture concentration (B) in the annealing furnace are the square root of the positive annealing time (A1/2) and the natural logarithm of the reciprocal of the moisture concentration (controlled based on the product of 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.