Benchmark Gas Metal and Metal Cored ARC Welding

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Authors
  1. Nicholson, C.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Fleet Technology Ltd, Kanata ONT (CAN)
Abstract
Previous investigation carried out at DREA and on its behalf have demonstrated that the gas metal arc welding (GMAW) process using selected electrode wires and shielding gases provides superior weld metal toughness in submarine steels than is the case for the shielded metal arc welding process. More recently, a past project demonstrated that pulsing power source technology had advanced to a state where GMAW welds should be reliably produced at low enough heat inputs to provide good weld metal toughness and avoid the lack of fusion flaws which have been commonly associated with previous attempts. Two welded panels were produced using different wire/gas combinations; one of which had shown considerable promise in previous DREA investigations (LA 100/TIME) and the other having shown great potential in manufacturer's technical literature (MC-100/M2). Radiography at +/-20 degrees to normal revealed no objectionable discontinuities and no lack of fusion.
Keywords
Dynamic tear;Submarines (Upholder);TIME Welding;Pulsed GMAW
Report Number
DREA-CR-1999-166 — Contractor Report
Date of publication
01 Oct 1999
Number of Pages
25
DSTKIM No
CA000848
CANDIS No
512611
Format(s):
Hardcopy;Document Image stored on Optical Disk

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