Narrow gap welding with the hot wire GTA process

Journal Article · Thu Aug 01 04:00:00 EDT 1985 · Weld. J. (Miami); (United States)

OSTI ID:5114128

Cook, G E; Levick, P C

Narrow gap welding offers the promise of dramatically improved weld completion rates and reduced heat input for welding of butt joints in materials of 10 mm (0.4 in.) section thickness and larger. Techniques for successful welding of narrow gap joint preparations have been discussed in the literature for approximately twenty years, with the majority of these based on the consumable electrode processes. Gas tungsten arc welding with cold wire filler addition has been shown to be capable of narrow gap welding although limited deposition rate capability has not made this a competitive alternative. The GTAW process offers the advantages of superior penetration control for one-sided welding of butt joints, as well as the potential for reducing incomplete fusion defects. The addition of hot wire filler metal to the gas tungsten arc provides an attractive alternative that combines high deposition rate capability and independent control of heat input.

• Research Organization: Vanderbilt University, Nashville, Tenn.
• OSTI ID: 5114128
• Journal Information: Weld. J. (Miami); (United States), Journal Name: Weld. J. (Miami); (United States) Vol. 64:8; ISSN WEJUA
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
ADDITIVES
ARC WELDING
CONTROL
DEFECTS
EFFICIENCY
ENERGY EFFICIENCY
FABRICATION
FILLER METALS
GAS TUNGSTEN-ARC WELDING
JOINING
JOINTS
TEMPERATURE CONTROL
WELDED JOINTS
WELDING
WIRES