Accession Number : AD0810250

Title :   SQUARE-BUTT NARROW GROOVE SHORT ARC WELDING.

Descriptive Note : Final rept. 1 Jun 65-24 Aug 66,

Corporate Author : UNION CARBIDE CORP NEWARK NJ LINDE DIV

Personal Author(s) : Enis, Allan

Report Date : 27 DEC 1966

Pagination or Media Count : 40

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)

Descriptors :   (*INERT GAS WELDING, VELOCITY), OPTIMIZATION, METAL PLATES, STEEL, MARAGING STEELS, MICROSTRUCTURE, NICKEL, COBALT, IRON, TITANIUM, COPPER, PHOSPHORUS, ALUMINUM, MOLYBDENUM, CRACKS.

Subject Categories : Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE