Die höheren Fahrgeschwindigkeiten und Achslasten im Eisenbahnverkehr stellen höhere Anforderungen an die Festigkeit, Kältebeständigkeit und Verschleißfestigkeit der für die Eisenbahnräder einzusetzenden Stähle. Als diesbezüglich vorteilhaft hat sich das Mikrolegieren von perlitischen Stählen mit Stickstoff und Vanadium erwiesen. Am Beispiel verschiedener Stahlmarken wird die positive Wirkung beider Legierungselemente auf die für Eisenbahnräder relevanten mechanischen Eigenschaften der Stähle nachgewiesen.

    Radical improvement in the reliability and longevity of railroad wheels at high train speeds and loads depends primarily on improvements in the properties of wheel steel: increased static and cyclic strength, high-and low temperature strength, and wear resistance, and low likelihood of the formation of martensitic surface zones. A short-term approach is to add microquantitics of nitrogen and vanadium to standard pearlitic alloys. The Physicotechnological Institute of Metals and Alloys, Ukrainian Academy of Sciences, has been developing the basic principles of this technology and conducting industrial trials. The properties of the steel ensures (2-3)-fold increase in the reliability and longevity of hot-rolled wheels. Together with external physical action on the solidifying metal, this technology permits the production of high-quality cast wheels.


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    Title :

    Microalloyed steel for railroad wheels


    Additional title:

    Mikrolegierter Stahl für Eisenbahnräder


    Contributors:

    Published in:

    Steel in Translation ; 38 , 9 ; 782-785


    Publication date :

    2008


    Size :

    4 Seiten, 1 Bild, 3 Tabellen, 9 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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