Siberian State Industrial University (Novokuznetsk, Russia)

A. V. Mazharin, Junior Researcher, e-mail: mazharin_av@sibsiu.ru
A. R. Mikhno, Director of the Scientific and Production Center “Welding processes and technologies”, e-mail: mihno_ar@sibsiu.ru
I. A. Panchenko, Cand. Eng., Associate Prof., Head of the scientific laboratory “Laboratory of electron microscopy
and image processing”, e-mail: panchenko_ia@sibsiu.ru
S. V. Konovalov, Dr. Eng., Prof., Vice-Rector for Research and Innovation, e-mail: konovalov@sibsiu.ru

In modern metalworking and mechanical engineering, improving the performance characteristics of component surfaces is a key objective to increase their service life and reliability. This is especially relevant under conditions of high temperatures, intensive mechanical loads, and aggressive environments. One of the promising approaches to addressing this issue is the use of deposited coatings based on special alloys with the addition of modifying components. The aim of this study is to investigate the effect of the concentration of a carbon–fluorine-containing additive (fine dust from aluminum production electrostatic precipitators), added to the core of 35V9Kh3SF flux-cored wire with a steel 08ps sheath, on the properties of the deposited metal. The research methodology included the production of three batches of flux-cored wire with varying contents of the carbon–fluorine-containing additive (1, 3, and 5 wt.% of the total charge mass) and the performance of arc surfacing using a flux derived from ferrosilicomanganese slag on a 09G2S steel plate. To analyze the properties of the deposited layers, the samples were prepared by electro-discharge sawing for determining chemical composition, conducting electron microscopy, energy-dispersion spectral analysis, as well as measuring nanohardness, Young modulus, and microhardness of the deposited layer. The results of the study showed that introduction of the carbon–fluorine-containing additive to the composition of the 35V9Kh3SF flux-cored wire increased the average microhardness of the deposited layer by 64 %, nanohardness by 63 %, and Young modulus by 66 %. These conclusions demonstrate the potential for optimizing the composition of flux-cored wire to produce metallic coatings with enhanced properties. The results can be applied in the development of coatings for mechanical engineering, metallurgy and other industries where high reliability and stability of deposited layers are required.

The research was carried out within the framework of the State Assignment of the Ministry of Higher Education of Russian Federation No. 075-00087-2401.

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