DOI: 10.52150/2522-9117-2025-39-13
V. O. Stolbovy1,2,3, D. Sc. (Tech.), Senior Researcher, ORCID 0000-0001-7734-0642
L. M. Deineko4, Professor, D. Sc. (Tech.), ORCID 0000-0002-1177-3055
V. L. Pinchuk5,*, teacher-methodist of the highest category, ORCID 0000-0001-8257-9252
L. S. Kryvchyk5, Ph. D., ORCID 0000-0002-7769-3808
1Scientific and Organizational Department, Presidium of the National Academy of Sciences of Ukraine, Ukraine
2National Scientific Center “Kharkiv Institute of Physics and Technology”, Akademichna St., Kharkiv, 61000, Ukraine
3Kharkiv National Automobile and Highway University, Ukraine
4Ukrainian State University of Science and Technologies, Lazariana St., 2, Dnipro, 49010, Ukraine
5Nikopol Vocational College, Ukrainian State University of Science and echnologies, Lazariana St., 2, Dnipro, 49010, Ukraine
* Corresponding author: v.l.pinchuk@nmt.org.ua
FEATURES OF DEEP ION-PLASMA NITRIDING OF STAMPED STEEL TOOLS FOR THE PRODUCTION OF CORROSION-RESISTANT PIPES
Abstract. A wide variety of tools are used in the production of corrosion-resistant pipes. These include dies and die rings, mandrel needles, press washers, bushings, expanders, rollers, support plates, mandrels, and gauges. Their operating conditions are characterized by significant loads, high temperatures, strong friction, and significant specific pressures. In most processes, pipe tools have low stability, which requires stopping mills and presses, constant retooling, and reduces the efficiency of rolling and pressing corrosion-resistant pipes. With low tool stability, the quality of the inner surface of the pipes and their stability in operation also decreases. This is especially important in the difficult operating conditions of these pipes: in the energy, aviation, machine building, chemical, and food industries. Therefore, the search for modern ways to strengthen and improve the corrosion resistance of pipe tools is an important task of modern materials science. The relevance of the topic stems from the need to create highly productive and durable tools for the production of corrosion-resistant pipes, which is primarily associated with the problem of obtaining and processing materials that can withstand the harsh operating conditions of the tools (high temperatures, intense sliding speeds, and high wear rates). primarily with the problem of obtaining and processing materials that could withstand the harsh operating conditions of the tool (high temperatures, intense sliding speeds and significant specific pressure, alternating loads, dynamic impacts). Thus, there is a certain interest in improving heat treatment methods and using modern types of chemical-thermal treatment to increase the wear resistance and performance characteristics of tools. The aim of the work is to find modern ways to strengthen the main pipe tools (pipe pressing tools – die rings, expanders) for pressing corrosion-resistant pipes on pipe pressing machines and tools for cold rolling of pipes (rollers, support strips of HPT mills) used in the production of thin-walled pipes from corrosion-resistant steels using new technologies of ion-plasma nitriding and modern methods of alloy structure research, as well as real testing of tools in production conditions and implementation of the results of the work at existing pipe enterprises in Ukraine.
Keywords: technology, ion-plasma nitriding, strengthening, microstructure, microhardness, tool steels.
For citation: Stolbovy, V. O., Deineko, L. M., Pinchuk, V. L., & Kryvchyk, L. S. (2025). Features of deep ion-plasma nitriding of stamped steel tools for the production of corrosion-resistant pipes. Fundamental and Applied Problems of Ferrous Metallurgy, 39, 226-245. https://doi.org/10.52150/2522-9117-2025-39-13
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Received 13.07.2025
Accepted 21.10.2025
Published online 01.12.2025
