This paper examines multi-wire submerged-arc welding, which is used for panel line butt welds, electro-gas and electro-slag welding, which are single pass processes used for welding main vertical seams in bulkheads and shell plates on the building berth. The concept of 'weldability' is defined and the use of Carbon Equivalent formulae to control cold cracking without preheating, which is not possible in shipbuilding, is discussed. Other defects include solidification cracking and lamellar tearing. The use of the Charpy test as an assessment of notch toughness and the inaccuracies which can affect the results of such tests are also discussed. There is a short section describing some recently introduced welding machines and the authors' views on possible lines of future development. /AUTHOR/

  • Availability:
  • Supplemental Notes:
    • Presented at a meeting of the Royal Institution of Naval Architects, April 11, 1973.
  • Corporate Authors:

    Royal Institution of Naval Architects

    10 Upper Belgrave Street
    ,   United States 
  • Authors:
    • Chadbund, J E
    • Salter, G R
  • Publication Date: 1974-1

Media Info

  • Features: References;
  • Pagination: p. 13-21
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00057281
  • Record Type: Publication
  • Source Agency: National Maritime Research Center, Kings Point
  • Report/Paper Numbers: NPL-Ship-177
  • Files: TRIS
  • Created Date: Aug 16 1974 12:00AM