TPWJ, 2010, #10, 2-6 pages
ADEQUACY OF THERMOHYDRODYNAMIC MODEL OF THROUGH PENETRATION IN TIG AND A-TIG WELDING OF NIMONIC-75 NICKEL ALLOY
Journal The Paton Welding Journal
Publisher International Association «Welding»
ISSN 0957-798X (print)
Issue № 10, 2010 (October)
D.V. KOVALENKO1, D.A. PAVLYAK2, V.A. SUDNIK2 and I.V. KOVALENKO1
E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
Tula State University, Tula, Russian Federation
Results of experiments on weld formation in TIG and A-TIG welding of Nimonic-75 alloy, and results of computer simulation of the effect of convection on «sand glass» shape of weld are presented. The experiments were carried out with and without activating flux PATIG Nim-75-A on 3.15 mm thick plates. Adequacy of the model was evaluated by comparing the sizes of the real and simulated weld sections. The causes of recirculation flows were analyzed. Correlation of the experimental and computation data was revealed.
TIG and A-TIG welding, nickel alloy, penetration, mathematical model, adequacy of mathematical model
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