Automatic Welding, 2025, №03

2025 №03 (08)

DOI of Article 10.37434/as2025.03.09

2025 №03 (01)

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"Avtomatychne Zvaryuvannya" (Automatic Welding), #3, 2024, pp. 56-60

Welding and technological properties of economically alloyed flux-cored wires for strengthening and repair of parts by arc surfacing

S.Yu. Maksymov, A.A. Babinets, I.P. Lentyugov, V.V. Osin

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

The results of a comparative study of the welding-technological properties of the developed economically alloyed flux-cored wires (FCWs) of two types: PD-Np-50Kh2MNSGF and PD-Np-20KhGS are presented. The evaluation was performed using a comprehensive methodology that includes three components: visual inspection of the surfacing process, assessment of melting characteristics, and evaluation of arc stability. A digital recording multimeter ANENG AN9002 was used to monitor the surfacing parameters. As a reference, the standard FCW of PP-Np-25Kh5FMS grade, developed at the E.O. Paton Electric Welding Institute of the NAS of Ukraine, was used. The experimental comparative analysis demonstrated that surfacing with the developed FCWs is characterized by high process stability, good quality of the deposited metal formation, absence of macroscopic defects, and satisfactory slag crust separation. Microstructural analysis of the deposited layers confirmed the absence of microdefects (pores, cracks, lacks of fusion) and revealed a distinct fusion line between the base metal and the deposited metal. The results of the comprehensive comparative analysis of the developed economically alloyed FCWs demonstrated that they possess similar or improved welding and technological characteristics compared to the standard reference wire. This indicates the feasibility of using the developed FCWs for arc surfacing applications. Considering the purpose of the developed FCWs, they can be effectively used to enhance the wear resistance and service life of components in special-purpose and industrial equipment, which is particularly relevant in the context of Ukraine’s post-war reconstruction and the strengthening of its defense capabilities. 14 Ref., 1 Tabl., 5 Fig.
Keywords: arc surfacing, flux-cored wire, deposited metal, welding and technological properties, resource-saving


Received: 13.02.2025
Received in revised form: 24.04.2025
Accepted: 11.06.2025

References

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