The National Shipbuilding Research Program 1985 Ship Production Symposium Volume 2 Paper No. 2: Evaluation of the Usability and Benefits of Twist Wire GMAW and FCAW Narrow Gap Welding

Abstract

Puget Sound Naval Shipyard is evaluating and developing the twisted wire narrow gap joints and reduced bevel weld joints for the shipbuilding industry. Test and evaluation work is being accomplished with twisted solid wire and twisted flux cored arc weld on carbon steel, low alloy steels (ASTM-302B) and quenched and temper steels (HY-8O). Weld joint design tolerances, welding parameters tracking systems and weld joint irregularities have been evaluated with both twisted FCAW and solid welding electrodes. All test welds have been accomplished on two and three inch thick base metals. The following elements of the electrode quality were found to be critical for depositing sound metal: uniformity of the twist; tightness of the twist; smoothness of the wire; amounts of residual stress; prevention of looping; and the amount of helix.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1985
Accession Number
ADA443991

Entities

People

  • Derek H. Mortvedt

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Arc Welding
  • Contractors
  • Engineering
  • Joints
  • Marine Systems (Military)
  • Materials
  • Mechanical Properties
  • Metals
  • Production
  • Puget Sound
  • Quality Control
  • Shape
  • Shipbuilding
  • Test And Evaluation
  • United States
  • Welding
  • Welds

Fields of Study

  • Materials science

Readers

  • Electrical Engineering
  • Metallurgy
  • Naval Engineering and Maritime Security