Process parameter effects on arc physics and heat flow in GTAW

Conference · Thu Dec 31 23:00:00 EST 1981

OSTI ID:5197153

Key, J F; Smartt, H B; Chan, J W; McIlwain, M E

The need or a more basic understanding of welding processes has engendered efforts to provide an experimental data base for use in weld process modeling. Work to determine interrelationships of heat source, molten pool, and weld bead geometry is described here, and the sensitivity of these interrelationships to welding variables is discussed. The effects on bead morphology of changing current, welding speed, and filler wire speed, with practical boundaries, are presented as a multivariable plot. A model of the relationship between process parameters and weld bead morphology is presented; the model involves dynamic heat and mass balances in a control volume containing the molten pool.

• Research Organization: EG and G Idaho, Inc., Idaho Falls (USA)
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 5197153
• Report Number(s): EGG-M-07682; CONF-820544-2; ON: DE82017269
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
640420* -- Fluid Physics-- Properties & Structure of Fluids-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ARC WELDING
CURRENTS
ELECTRIC ARCS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ENERGY TRANSFER
FABRICATION
FILLER METALS
FLUID MECHANICS
GAS TUNGSTEN-ARC WELDING
HEAT SOURCES
HEAT TRANSFER
JOINING
MECHANICS
MELTING
PHASE TRANSFORMATIONS
PLASMA
SIMULATION
TEMPERATURE DISTRIBUTION
WELDING