Underwater welding by the submerged-arc welding process is investigated by using the 1.6 and 2 mm diameter flux cored wires and a flux MF43 mixed with water glass. Welding experiments are done by using SM41 and SM50 steel base metals of 6,9 and 12 mm in thickness and it is ascertained that this process may be put to practical use. Main results are summerized as follows: Sound weld can be obtained easily by using flux cored wires and a special flux mixed water glass with MF43, due to stable arc. Weld metal does not include a blowhole. And cracks are not obserbed at heat-affected zone and in weld metal. The welds resulting from this process have excellent mechanical properties in both tensile strength and notch tougness. Cooling rate at 500 Cel at bond is 13-15 Cel C/s and it seems to be much lower value than those by any other underwater welding processes. (Wassmann)


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    Title :

    On underwater submerged-arc welding (The 2nd report) - Welding of SM51 steel and SM50 steel by using flux cored wire


    Additional title:

    Ueber das Unterwasser UP-Schweissen (Der 2. Bericht) - Schweissen von SM41 Stahl und SM50 Stahl mit Seelendrahtelektrode


    Contributors:
    Hasui, A. (author) / Suga, Y. (author) / Kishi, S. (author) / Teramishi, M. (author)

    Published in:

    Publication date :

    1979


    Size :

    5 Seiten, 5 Bilder, 7 Tabellen, 7 Quellen


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    Japanese






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