Stability of a pendant droplet in gas metal arc welding

Conference · Wed Jul 01 04:00:00 EDT 1998

OSTI ID:666033

Murray, P E

The authors develop a model of metal transfer in gas metal arc welding and compute the critical mass of a pendant droplet in order to ascertain the size and frequency of droplets detaching from the consumable metal electrode. These results are used to predict the mode of metal transfer for a range of voltage and current encompassing free flight transfer, and the transition between globular and spray transfer. This model includes an efficient method to compute the stability of a pendant droplet and the location of the liquid bridge connecting the primary droplet and the residual liquid remaining after detachment of the primary droplet.

• Research Organization: Lockheed Martin Idaho Technologies Co., Idaho National Engineering and Environmental Lab., Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: AC07-94ID13223
• OSTI ID: 666033
• Report Number(s): INEEL/CON--98-00695; CONF-980657--; ON: DE98057367; BR: KC0401030
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
36 MATERIALS SCIENCE
DROPLETS
GAS METAL-ARC WELDING
MASS TRANSFER
MATHEMATICAL MODELS
PROCESS CONTROL
WELDING RODS