Provided is a rail vehicle axle having an excellent fatigue limit and notch factor. A rail vehicle axle according to the present embodiment has a chemical composition consisting of, in mass %, C: 0.20 to 0.35%, Si: 0.20 to 0.65%, Mn: 0.40 to 1.20%, P: 0.020% or less, S: 0.020% or less, Sn: 0.07 to 0.40%, N: 0.0200% or less, Cu: 0 to 0.30%, Ni: 0 to 0.30%, Cr: 0 to 0.30%, Mo: 0 to 0.08%, Al: 0 to 0.100%, V: 0 to 0.060%, and Ti: 0 to 0.020%, with the balance being Fe and impurities, and satisfying Formulae (1) and (2):0.58≤C+Si/8+Mn/5+Cu/10+Cr/4+V≤0.67 (1)Si+0.9Cr≥0.50 (2)where, each element symbol in Formulae (1) and (2) is substituted by the content (mass %) of a corresponding element.
Rail vehicle axle
2024-06-04
Patent
Elektronische Ressource
Englisch
IPC: | C22C Legierungen , ALLOYS / B61F Untergestelle für Schienenfahrzeuge, z.B. Fahrgestellrahmen, Drehgestelle oder Anordnungen der Radsätze , RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS / F16C SHAFTS , Wellen |
DRIVING AXLE OF RAIL VEHICLE, RAIL VEHICLE, AND RAIL TRANSPORT SYSTEM
Europäisches Patentamt | 2022
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