Depth of penetration in gas metal arc welding

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

OSTI ID:666032

Murray, P E ^[1]; Scotti, A ^[2]

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1. Lockheed Martin Idaho Technologies Co., Idaho Falls, ID (United States). Idaho National Engineering and Environmental Lab.
2. Univ. Federal de Uberlandi (Brazil)

The authors present a model of the depth of penetration in gas metal arc welding. This model is based on the assumption that the heat and mass transfer to the weld pool and the depth of penetration may be correlated by a dimensionless relation. This correlation leads to an analytical expression for depth of penetration, which involves empirical constants that are related to the efficiency of heat and mass transfer to the pool. They examine the accuracy of the model by comparing the theoretical depth of penetration and the measured depth of the weld pool for a range of processing variables encompassing short arc and free flight mass transfer. Measurements are obtained from bead on plate welds of stainless steel using a stainless steel electrode and a shielding gas that is rich in argon. The results confirm that the depth of penetration is affected by variations in the rate of mass transfer.

• 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: 666032
• Report Number(s): INEEL/CON--98-00694; CONF-980657--; ON: DE98057366; BR: KC0401030
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
36 MATERIALS SCIENCE
COMPARATIVE EVALUATIONS
GAS METAL-ARC WELDING
HEAT TRANSFER
MASS TRANSFER
MATHEMATICAL MODELS
STAINLESS STEELS
WELDING RODS