Avtomaticheskaya Svarka (Automatic Welding), #2, 2018, pp. 5-10
Calculation model of formation of nonmetallic inclusions of multilayer morphology in weld metal
L.A. Taraborkin and V.V. Golovko
E.O. Paton Electric Welding Institute of the NAS of Ukraine
11 Kazimir Malevich Str., 03150, Kyiv, Ukraine. E-mail: email@example.com
The objective of the work was development of a calculation model for practical prediction of the kinetics of formation of multicomponent endogenous nonmetallic inclusions in the weld metal. The proposed mathematical model is a nonstandard nonlinear boundary problem for a system of diffusion equations with the specific condition on the moving melt-inclusion interphase, and it allows for the kinetics and heterogeneity of the process under the conditions of the real thermal cycle of welding. The calculation program developed as a computer realization of the constructed model allows evaluating in a computer experiment the size and composition of endogenous nonmetallic oxide inclusions, depending on concentration and thermal conditions in the weld pool. 10 Ref., 2 Figures.
arc welding, weld pool, nonmetallic inclusions, mathematical model, prediction
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