Automatic Welding, 2026, №02

2026 №02 (03)

DOI of Article 10.37434/as2026.02.04

2026 №02 (05)

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"Avtomatychne Zvaryuvannya" (Automatic Welding), #2, 2026, pp. 33-38

Influence of thermochemical reactions in the metal-mineral core of flux-cored wire on wire melting characteristics at arc welding

V.V. Holovko, O.S. Kotelchuk

E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: alexa_kot@ukr.net

Results of study of physical and chemical properties of powdered materials and their mixtures that simulates cores of flux-cored wires of carbonate-fluoride type using methods of complex thermal analysis as well as mass-spectral study of composition of gas phase at their dynamic heating up to steel melting point are given in connection with the melting properties of flux-cored wires. Heat effects of thermochemical reactions (endothermic processes of destruction, dissociation and melting as well as exothermic processes of oxidation and formation of complex compounds) that take place simultaneously during flux-cored wire heating and melting at the wire extension are evaluated. An example of a possibility to regulate flux-cored wire melting rate, to achieve the favorable flux-cored wire melting characteristics and to increase the efficiency of electrode metal transfer to welding pool is presented. 9 Ref., 2 Tabl., 3 Fig.
Keywords: welding, low-alloy steel, flux-cored wire, metal-mineral charge, thermochemical reactions


Received: 02.10.2025
Received in revised form: 24.11.2025
Accepted: 10.04.2026
Posted online 11.04.2026

References

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Suggested Citation

V.V. Holovko, O.S. Kotelchuk (2026) Influence of thermochemical reactions in the metal-mineral core of flux-cored wire on wire melting characteristics at arc welding. Avtom. Zvaryuvannya, 02, 33-38.