UNDERWATER JOINING AND CUTTING

IN MOST CASE, LAND TECHNIQUES HAVE BEEN AND ARE BEING APPLIED TO PIPELINE AND OTHER UNDERWATER WORK EVEN THOUGH ENVIRONMENTAL CONDITIONS ARE SIGNIFICANTLY DIFFERENT, AND RESULTS HAVE NOT BEEN COMPLETELY SATISFACTORY BECAUSE OF RELATIVELY SLOW SPEED, HIGH COSTS, AND OTHER FACTORS. THIS ARTICLE DESCRIBES THE CURRENTLY USED METHODS FOR BOTH WET AND DRY WELDING UNDERWATER, AND DISCUSSES THE PROBLEMS INVOLVED IN OBTAINING HIGHQUALITY JOINTS. MOST WELDING IN UNDERWATER SALVAGE AND EMERGENCY REPAIR IS DONE WET WITH THE CONVENTIONAL MANUAL SHIELDED METAL-ARC PROCESS, COMMONLY KNOWN AS STICK ELECTRODE WELDING, UNDERWATER DRY WELDING CAN BE DONE WITH EITHER OF TWO CONVENTIONAL LAND TECHNIQUES -THE GAS-METAL-ARC (GMA) AND GAS-TUNGSTEN-ARC (GTA) PROCESSES. SEVERAL OTHER PROCESSES COULD BE OR ARE BEING USED FOR MAKING JOINTS UNDERWATER: PLASMA-ARC WELDING, BRAZING, ADHESIVE BONDING, EXPLOSIVE WELDING, AND MECHANICAL JOINING. TWO BURNING PROCESSES - FLAME AND ARC CUTTING - ARE APPLIED COMMERCIALLY TO CUT METALS UNDERWATER.

  • Supplemental Notes:
    • Vol 1, No 1, PP 17-22
  • Corporate Authors:

    Battelle Research Outlook

    ,    
  • Authors:
    • Mishler, H W
    • Randall, M D
  • Publication Date: 1969

Subject/Index Terms

Filing Info

  • Accession Number: 00215253
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 1 1970 12:00AM