Extensive industrial use of thick high-strength steel plates in Arctic shipbuilding calls for submerged arc welding (SAW) processes with higher deposition rates. One of the most effective ways of increasing the deposition rate is to increase the number of welding wires. Although SAW processes with up to six wires exist, their use is not widespread and two- or three-wire modifications, which are the focus of this paper, are the most common approaches. This paper presents a case study of the development of a welding procedure for welding of high-strength steel shipbuilding plates using a three-wire SAW process. Welding parameters and conditions were evaluated with the aim of achieving a high-quality weld. Optimal parameters for 12-mm plate thickness were found to be: Cb-08ΓCMT wire (similar to Mn4Ni1Mo) of 3.2 mm in diameter, single-pass welding, welding flux 48AF-56, I = 840 A, U = 37 V, Q = 5.4 kJ/mm. Optimal parameters were also found for 16-mm plate for two pass welding. Testing of the weld joint included a static tensile strength test, an impact energy test at different temperatures, a bending test, a low-cycle fatigue strength test, microstructure examination and a hardness test. The tests showed satisfactory results that indicate that the developed welding technique is applicable for Arctic shipbuilding applications. The paper provides improved understanding of the welding technique selection process for Arctic shipbuilding as well as providing industrially valuable information about the developed welding technique.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Multi-wire SAW of 640 MPa Arctic shipbuilding steel plates


    Contributors:
    Layus, P. (author) / Kah, P. (author) / Martikainen, J. (author) / Gezha, V.V. (author) / Bishokov, R.V. (author)


    Publication date :

    2014


    Size :

    12 Seiten




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Advances in steel plates for shipbuilding

    Imai, S. | Tema Archive | 1999


    Recent progress of steel plates for shipbuilding

    Yoshie, Atsuhiko | Tema Archive | 2008


    Shipbuilding for Arctic inland waters

    Anderson, G. | Engineering Index Backfile | 1950


    Adhesive bonding of steel and fiberglass plates for shipbuilding

    Huther, M. / Roy, A. / Gacougnolle, J.J. et al. | Tema Archive | 2001


    Impact of shipbuilding steel plates with an initial tensile stress

    Grolleau, V. / Maheo, L. / Rio, G. | Tema Archive | 2003