SQUARE-BUTT NARROW GROOVE SHORT ARC WELDING.
Abstract
Because of the possibility of reducing welding costs without sacrificing the reliability of welded joints, the Air Force has been evaluating various high speed or high deposition rate inert gas welding processes. A brief investigation was conducted to determine the utility of gas metal arc (Mig) welding by means of large diameter filler metal and short-circuiting transfer for joining spaced square butt heavy 18 per cent nickel maraging steel plate. In a preliminary study, welding procedures were optimized for producing sound crack-free welds in mild steel plate. Use of these procedures for joining 18 percent nickel steel plate resulted in unacceptable lack-of-fusion or microcracking defects. Although refinements of welding techniques improved the integrity of weld metal, the program was terminated because of the improbability that the process could be upgraded to meet the requirements of the aerospace industry. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 27, 1966
- Accession Number
- AD0810250
Entities
People
- Allan Enis