OBRABOTKAMETALLOV Vol. 28 No. 1 2026 190 EQUIPMENT. INSTRUMENTS References 1. Liu Y., Hrechuk A., Agmell M., Ahadi A., Stahl J.-E., Zhou J. FE analysis on the association between tool edge radius and thermal-mechanical load in machining Inconel 718. Procedia CIRP, 2021, vol. 102, pp. 91–96. DOI: 10.1016/j.procir.2021.09.016. Infl uence of processing parameters on tool life in machining the heat-resistant molybdenum-based MoTiC alloy Yury Titov 1, 2, a, Evgeny Krivonos 1, b, Vadim Allagulov 1, c, *, Erik Minibaev 1, d, Nikolay Bobrovsky 2, e, Renat Kamenov 2, f 1 Omsk State Technical University, 11 Mira Ave., Omsk, 644050, Russian Federation 2 National Research University of Electronic Technology - MIET, 1 Shokin Square, Zelenograd, Moscow, 124498, Russian Federation a https://orcid.org/0000-0002-6454-8310, tyrin-88@mail.ru; b https://orcid.org/0000-0001-8485-1862, evgenii.krivonos@mail.ru; c https://orcid.org/0009-0000-5427-7337, vadim_allgul@mail.ru; d https://orcid.org/0009-0000-1539-053X, ericminibaev@yandex.ru; e https://orcid.org/0000-0002-9299-2822, bobrnm@yandex.ru; f https://orcid.org/0000-0001-9181-5704, renatkamenov@mail.ru Obrabotka metallov - Metal Working and Material Science Journal homepage: http://journals.nstu.ru/obrabotka_metallov Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science. 2026 vol. 28 no. 1 pp. 176–192 ISSN: 1994-6309 (print) / 2541-819X (online) DOI: 10.17212/1994-6309-2026-28.1-176-192 ART I CLE I NFO Article history: Received: 21 November 2025 Revised: 24 November 2025 Accepted: 17 December 2025 Available online: 15 March 2026 Keywords: Machining Heat-resistant alloys Carbide end mill Cutting operations Tool life Cutting conditions Surface microgeometry Surface roughness Technological heredity Wavelet analysis Surface plastic deformation Funding The research was supported by a grant from the Russian Science Foundation, project No. 22-19-00298-П, https:// rscf.ru/en/project/22-19-00298/. ABSTRACT Introduction. Modern mechanical engineering is characterized by the increasing application of heat-resistant alloys for critical components in aerospace and defense equipment. The machining of promising molybdenum alloys, such as Mo-30TiC, is particularly challenging due to their high heat resistance, abrasiveness, and the anomalous behavior of their mechanical properties at elevated temperatures. Existing technological solutions developed for nickel-based alloys often prove ineff ective, highlighting the relevance of research in this area. Purpose of the work is to develop rational machining conditions and strategies for the milling of the heat-resistant Mo-30TiC alloy, aimed at increasing tool life and ensuring the required surface quality. Methodology. Experimental studies were conducted on an Okuma MB-46BE machining center using carbide end mills from various manufacturers. The infl uence of geometric tool parameters (rake angle, cutting edge radius, and presence of a negative land) and cutting conditions (cutting speed, feed rate, depth of cut) on fl ank wear and surface roughness was investigated. Process monitoring was performed using optical microscopy and surface profi lometry. Results and discussion. Optimal geometric tool parameters were determined: a rake angle of 0°, a cutting edge radius of 0.5–1 mm, and a negative land width of 0.05 mm. Two distinct machining strategies were developed: a standard cutting strategy (Vc = 50–72 m/min, fz = 0.03–0.04 mm) for high-quality fi nishing, and a high-productivity power cutting strategy (Vc = 12–17 m/min, fz = 0.08–0.1 mm). The Karcan 99508003 and CNCINS MS15.Z5.08.19.63.38.R05 end mills demonstrated superior tool life. It was shown that the progression of tool wear leads to an exponential increase in the variance of surface roughness parameters Ra and Rz. Conclusions. The proposed set of technological solutions enables eff ective machining of the Mo-30TiC alloy, providing control over tool wear and achieving the specifi ed surface quality. The results of this work are of practical importance for manufacturing enterprises specializing in the machining of diffi cult-to-cut materials. For citation: Titov Y.V., Krivonos E.V., Allagulov V.R., Minibaev E.R., Bobrovsky N.M., Kamenov R.U. Infl uence of processing parameters on tool life in machining the heat-resistant molybdenum-based MoTiC alloy. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science, 2026, vol. 28, no. 1, pp. 176–192. DOI:10.17212/1994-6309-2026-28.1-176-192. (In Russian). ______ * Corresponding author Allagulov Vadim R., Assistant Omsk State Technical University, 11 Mira Ave., 644050, Omsk, Russian Federation Tel.: +7 908 102-68-22, e-mail: vadim_allagul@mail.ru
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