Thermal cycles of underwater welds in gravity arc welding were measured. The effect of welding parameters on cooling process, cooling rate at the bond line were investigated. Moreover, experimental formulas and nomographs were proposed to estimate cooling rate of underwater welds. Main results are summarized as follows: Underwater welds are cooled rapidly owing mainly to the heat transfer from surface of weld to the sorrounding water. So the cooling rate of underwater weld is much higher than that of open air weld. Welding parameters which have a considerable effect on cooling rate of underwater welds are weld heat input, water temperature, water pressure, thickness of base metal, welding position (slope of base metal) and location of weld bead. Colling rate and cooling times of underwater welds may be estimated by means of the given experimental formulas. (Wassmann)


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    On cooling of underwater welds


    Additional title:

    Ueber die Kuehlung von Unterwasserschweissnaehten


    Contributors:
    Hasui, A. (author) / Suga, Y. (author)

    Published in:

    Publication date :

    1979


    Size :

    7 Seiten, 16 Bilder, 10 Quellen


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    Japanese




    On cooling of underwater welds

    Hasui, A. / Suga, Y. | Tema Archive | 1980


    Robots to inspect welds underwater

    Kenzie, B. | Tema Archive | 1994


    Underwater nondestructive testing of ship hull welds

    Youshaw, R. / Dyer, C. | TIBKAT | 1979


    Underwater nondestructive testing of ship hull welds

    Youshaw, R. / Dyer, C. | Tema Archive | 1979


    Effect of nickel on toughness of underwater wet welds

    Perez, F. / Liu, S. / Smith, C. et al. | Tema Archive | 2003