The feasibility of underwater welding by the submerged arc welding process is investigated. In this process, a special flux mixed water glass with MF43 is used to stabilize arc and to protect the part being welded from the sorrounding water. Welding experiments are done by using steel for welded structure SM41 of 9 mm in thickness and it is ascertained that this process may be put to practical use. Main results are summerized as follows: Welding arc can be generated easily and kept in stable, if only proper welding conditions are selected. Especially, good welds can be obtained casily by using a special flux mixed 40 wt% water glass with MF43. The weld metal includes blowholes to some extent. The hardness of the underwater weld seems to be relatively low. Weld metal has the tensile strength of 82 % of that of base metal. Colling rate at 500 Cel at bond is about 23 Cel/sec under water and 10 Cel/sec in air, the former being about only 2 times higher than the latter. The former seems to be lower value than those by any other underwater welding processes. (Wassmann)


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    On underwater submerged-arc welding (The 1st report). The feasibility of underwater welding by submerged-arc welding process


    Weitere Titelangaben:

    Ueber das Unterwasser UP-Schweissen (Der 1. Bericht) - Die Durchfuehrbarkeit des Unterwasserschweissens mit dem Unterpulverschweissverfahren


    Beteiligte:
    Hasui, A. (Autor:in) / Suga, Y. (Autor:in) / Sekimizu, N. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1979


    Format / Umfang :

    7 Seiten, 4 Bilder, 4 Tabellen, 8 Quellen


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Japanisch