In this report, the DC butt welding process was studied from the view point of comparison with the flash butt welding process. The weld defect formed in flash butt welding is mainly oxide inclusion (Si-Mn-Al oxide) at weld interface. On the other hand, in DC butt welding the cold weld and overheat cracking due to heat input are main weld defects. Such defects in DC butt welding are controlled by the welding conditions; that is, welding current, welding time and electrode pressure which are 3 main control factors in resistance welding, such as spot welding, as heat input of DC butt welding is generated by joule's heat. In addition, though the heat input along the weld line is uniform in flash butt welding, it is non-uniform in DC butt welding. It is generally generated near both plate side edges. In the case of higher heat input, the growth of the overheat cracking is initiated at both plate side edges. This phenomena that non-uniform heat input is generated is characteristic of DC butt welding. Maximum hardness of welded joint is higher in DC butt welding than that in flash but welding, because the cooling rate is higher in DC butt welding due to lower heat input.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    DC butt welding process for wheel-rim


    Weitere Titelangaben:

    Direktkontakt-Stumpfschweissverfahren fuer Radfelgen


    Beteiligte:
    Taka, T. (Autor:in) / Nakanishi, M. (Autor:in) / Yamauchi, N. (Autor:in)

    Erschienen in:

    SAE-Papers ; Mar ; 1-6


    Erscheinungsdatum :

    1988


    Format / Umfang :

    6 Seiten, 9 Bilder, 3 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    DC butt welding process for wheel-rim

    Taka,T. / Nakanishi,M. / Yamauchi,N. et al. | Kraftfahrwesen | 1988


    DC Butt Welding Process for Wheel-Rim

    Nakanishi, Mutsuo / Yamauchi, Nobuyuki / Taka, Takao | SAE Technical Papers | 1988



    BUTT WELDING STRUCTURE AND BUTT WELDING METHOD FOR EXTREMELY THICK STEEL PLATE

    YAMAUCHI AKIHIKO / KIJI NOBORU / TOYODA MASANOBU | Europäisches Patentamt | 2016

    Freier Zugriff

    New oxy-acetylene process for butt-welding rails

    Engineering Index Backfile | 1939