A quenched steel pipe member is formed of a GI galvanized steel pipe, in a middle section in a longitudinal direction of the GI galvanized steel pipe, a cross-section perpendicular to the longitudinal direction has a substantially V shape including a contact section at which opposite parts of an inner circumferential surface of the GI galvanized steel pipe come into contact with each other, the contact section is bonded using a Fe-Zn alloy phase, and a micro Vickers hardness at a location 50 µm deep from a base material surface layer is 95% or more of a micro Vickers hardness at a location 200 µm deep from the base material surface layer.
QUENCHED STEEL PIPE MEMBER, VEHICLE AXLE BEAM USING THE QUENCHED STEEL PIPE MEMBER, AND METHOD FOR MANUFACTURING THE QUENCHED STEEL PIPE MEMBER
GEHÄRTETES STAHLROHRELEMENT, FAHRZEUGACHSE MIT DIESEM GEHÄRTETEN STAHLROHRELEMENT UND VERFAHREN ZUR HERSTELLUNG DES GEHÄRTETEN STAHLROHRELEMENTS
ÉLÉMENT DE TUBE EN ACIER TREMPÉ, POUTRE D'ESSIEU DE VÉHICULE UTILISANT LEDIT ÉLÉMENT DE TUBE EN ACIER TREMPÉ, ET PROCÉDÉ DE FABRICATION DUDIT ÉLÉMENT DE TUBE EN ACIER TREMPÉ
06.03.2019
Patent
Elektronische Ressource
Englisch
IPC: | C23C Beschichten metallischer Werkstoffe , COATING METALLIC MATERIAL / 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 / B60B VEHICLE WHEELS , Räder für Fahrzeuge / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS / C22C Legierungen , ALLOYS |
Europäisches Patentamt | 2017
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