A welded steel part with a very high mechanical strength is provided. The welded steel part is obtained by heating followed by hot forming, then cooling of at least one welded blank obtained by butt welding of at least one first and one second sheet. The at least one first and second sheets including, at least in part, a steel substrate and a pre-coating which includes an intermetallic alloy layer in contact with the steel substrate, topped by a metal alloy layer of aluminum or aluminum-based alloy. A method for the fabrication of a welded steel part and the fabrication of structural or safety parts for automotive vehicles are also provided.
PIÈCE D'ACIER SOUDÉE MISE EN FORME À CHAUD À TRÈS HAUTE RÉSISTANCE MÉCANIQUE ET PROCÉDÉ DE FABRICATION
HOT-FORMED WELDED PART HAVING HIGH RESISTANCE AND PROCESS TO PRODUCE SUCH A PART
WARMGEFORMTER ANTEIL MIT HOCHE FESTIGKEIT UND VERFAHREN ZUR HERSTELLUNG DIESEN ANTEIL
2024-10-16
Patent
Electronic Resource
French
IPC: | B23K Löten , SOLDERING OR UNSOLDERING / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B62D MOTOR VEHICLES , Motorfahrzeuge / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS / C22C Legierungen , ALLOYS / C23C Beschichten metallischer Werkstoffe , COATING METALLIC MATERIAL |
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