A method for manufacturing a high precision hollow metallic component, by obtaining, through extruding or roll forming, a precursor hollow metallic profile having a constant cross section and at least one precursor chamber; positioning the precursor hollow metallic profile in a split-die cavity, wherein at least two walls of said split die cavity have essentially outside dimensions of corresponding walls of the high-precision hollow metallic component; introducing a mandrel made of at least two parts into the precursor chamber; plastically deforming the precursor hollow metallic profile by expanding the mandrel to obtain finished dimensions of the high-precision hollow metallic component; removing the mandrel from the finished chamber after reversing an expanding action. A variable cross section hollow metallic component, with at least two chambers obtained with the method, is also described.


    Access

    Download


    Export, share and cite



    Title :

    PRECISION FORMING OF METALLIC HOLLOW EXTRUSIONS


    Additional title:

    PRÄZISIONSFORMEN VON METALLISCHEN HOHLEN STRANGGÜSSEN
    FORMAGE DE PRÉCISION D'EXTRUSIONS MÉTALLIQUES CREUSES


    Contributors:

    Publication date :

    2018-04-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL , Bearbeiten oder Verarbeiten von Blechen, Metallrohren, -stangen oder -profilen ohne wesentliches Abtragen des Werkstoffs / B21C MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING , Herstellen von Blechen, Metalldraht, -stangen, -rohren Metallprofilen oder Halbzeugen auf andere Weise als durch Walzen / B62D MOTOR VEHICLES , Motorfahrzeuge



    PRECISION FORMING OF METALLIC HOLLOW EXTRUSIONS

    KERR SEAN / GRAF ALEJANDRO F | European Patent Office | 2016

    Free access

    HOT PRECISION FORGINGS AND EXTRUSIONS

    MURPHY, JOHN F. | SAE Technical Papers | 1958


    Hollow Extrusions Refine Pendolino Body Structures

    British Library Online Contents | 1993


    Development of Aluminum Hollow-Extrusions Rear Lower Arm

    Yotsuya, G. / Yamauchi, R. / Kinoshita, K. | British Library Online Contents | 2010


    ETHYLENE TETRAFLUOROETHYLENE EXTRUSIONS

    SAE Technical Papers | 2011