A tubular hollow member to which torsion about a center line is applied is characterized in performing a partial heat treatment on part of a peripheral wall of the hollow member to make the hardness of an outer portion of the peripheral wall greater than the hardness before heating and greater than the hardness of an inner portion of the peripheral wall, and reduce a residual stress of the inner portion of the peripheral wall.


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    Title :

    HOLLOW MEMBER AND METHOD FOR MANUFACTURING HOLLOW MEMBER


    Additional title:

    HOHLKÖRPER UND VERFAHREN ZUR HERSTELLUNG DES HOHLKÖRPERS
    ÉLÉMENT CREUX ET PROCÉDÉ DE FABRICATION D'ÉLÉMENT CREUX


    Contributors:

    Publication date :

    2018-07-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS / F16F SPRINGS , Federn



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