TRIP Combination structure of metal sheets for automobile by using TRIP steel and method for manufacturing the same

Provided is a metal plate bonding structure for vehicles, applying TRIP steel to a vehicle body while maintaining the TRIP steel′s inherent high strength and high elongation properties to enhance anti-rust properties, and further prevent liquid metal embrittlement despite spot welding with other ste...

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Bibliographische Detailangaben
Hauptverfasser:	GEONYONG LEE, HEESANG SHIN
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MOTOR VEHICLES PERFORMING OPERATIONS TRAILERS TRANSPORTING
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Beschreibung
Zusammenfassung:	Provided is a metal plate bonding structure for vehicles, applying TRIP steel to a vehicle body while maintaining the TRIP steel′s inherent high strength and high elongation properties to enhance anti-rust properties, and further prevent liquid metal embrittlement despite spot welding with other steel plates. The metal plate bonding structure for vehicles comprises: an aluminum-plated steel plate having an aluminum coating layer formed on a surface of a first steel plate made of TRIP steel and formed through cold working below the recrystallization temperature of the TRIP steel; and a spot welding area created when spot welding is performed on the aluminum-plated steel plate and a galvanized steel plate while the aluminum coating layer and the zinc coating layer are in contact. 차량용 차체에 TRIP강을 적용하되 TRIP강 고유의 고강도 및 고연신 특성을 유지하면서 방청 특성을 강화하고 나아가 다른 강판과의 스팟 용접에도 액체금속취화를 방지할 수 있는 차량용 금속판재 결합구조가 제공된다. 이 차량용 금속판재 결합구조는, TRIP강으로 이루어진 제1 강판의 표면에 알루미늄 코팅층을 형성하고 TRIP강의 재결정온도 이하에서 냉간가공으로 성형한 알루미늄 도금 강판; TRIP강이 아닌 제2 강판의 표면에 아연 코팅층을 형성하고 이를 성형한 아연 도금 강판; 및 알루미늄 코팅층과 아연 코팅층이 맞닿은 상태에서 알루미늄 도금 강판과 아연 도금 강판을 스팟 용접하여 생성된 스팟 용접 영역을 포함한다.