DEVELOPMENT OF TECHNIQUES FOR DEEP-SEA WELDING--SIMULATION AND STUDY

In this study means have been developed for doing welding at simulated depths under controlled conditions, so as to have a proper understanding of the different welding process at deep sea conditions, in terms of their capabilities and limitations. For doing this a deep-sea welding simulation vessel (pressure tank) was designed, built and tested. The welding process in the simulator was remotely controlled, as it has been shown by Mr. Moore (Ref. 10) that any welding process requiring the use of a welder/diver is uneconomical as well as restricted in its depth capability due to diving related problems. The Gas Metal Arc and the submerged arc process have been studied in terms of their welding capabilities and limitations as a function of depth. Attempts have also been made to study the arc stability, cooling rate of the weld, and HAZ as a function of depth (pressure) so as to be able to predict the mechanical and metallurgical properties of the weld and the Heat-affected-zone.

• Corporate Authors:

  Massachusetts Institute of Technology

  Department of Ocean Engineering, 77 Massachusetts Avenue
  Cambridge, MA  United States  02139
• Authors:
  • Prasad, S
• Publication Date: 1978-2

Subject/Index Terms

• TRT Terms: Automatic welding; Economics; Electric arc welding; Gas metal arc welding; Heat affected zone (Metals); Simulation; Submerged arc welding; Welding; Welds
• Old TRIS Terms: Simulated welding; Underwater welding; Weld properties; Welding economics; Welding techniques
• Subject Areas: Economics; Marine Transportation;

Filing Info

• Accession Number: 00173910
• Record Type: Publication
• Source Agency: Massachusetts Institute of Technology
• Report/Paper Numbers: MS Thesis
• Files: TRIS
• Created Date: May 3 1978 12:00AM