Automatic Welding, 2021, №12



2021 №12 (02)

DOI of Article 10.37434/as2021.12.03

2021 №12 (04)

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Avtomaticheskaya Svarka (Automatic Welding), #12, 2021, pp. 27-32

Calculated-experimental model of distribution of non-metallic inclusions in the metal of welds by sizes

L.A. Taraborkin, V.V. Golovko

E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

There is a large number of investigations on the impact of distribution of non-metallic inclusions in the weld metal on its structure and mechanical properties. However, the authors of these works do not describe the kinetics of forming such a distribution. The results of the development of a distribution model in the weld metal of non-metallic inclusions by sizes are presented. Formation of the calculation part of the model is based on the processing of experimental data on the sizes of nonmetallic inclusions in the metal of welds, deposited by the methods of submerged welding in the medium of shielding gas. Generalization and analysis of experimental data showed that the fi nal distribution of inclusions in the metal of the studied welds is submitted to the law of gamma distribution (probability is > 95%). To describe the evolution of the distribution of non-metallic inclusions during weld formation, the authors proposed to apply a probabilistic model in the form of gamma-distribution with time-dependent parameters. 14 Ref., 2 Tabl., 3 Fig. Key words: low-alloy steel, welding, weld metal, non-metallic inclusions, distribution


Received: 12.10.2021

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