OBRABOTKAMETALLOV technology Vol. 27 No. 1 2025 Fig. 8. Results of the arithmetic mean deviation of the Ra profile of the processed surface Conclusions The application of NMA during their hydrogenation, enables the transition to liquid interpacket friction of the mineral layers, creating a hydrobranching zone and improving the tribological properties of oil-based MWFs. This composition allows for the reduction of temperature in the cutting zone through of convective heat distribution within the volume of the MWF with its subsequent removal from the system into the environment. Conducted laboratory studies have shown that, when supplying the oil-based MWF with NMA, the empirical friction coefficient has the lowest value (μ = 0.11) compared to other compositions. NMA included in the composition of oil-based MWF also had a positive effect on the reduction of cutting force during drilling of steel 0.12 C-18 Cr-10 Ni-Ti (by 10 %), compared to using MWF without additives. Furthermore, it reduced the surface roughness of the machined surface to Ra = 3.96 µm. Based on these findings, we conclude that the use of NMA in combination with environmentally safe oils opens fundamentally new ways of their effective use in the cutting process. The primary effects of NMAs are aimed at enhancing the lubricating, cooling, as well as resource-saving action of MWFs. References 1. Vereshchaka A.S., Lierat F., Dyubner L. Analiz osnovnykh aspektov problemy ekologicheski bezopasnogo rezaniya [Analysis of the main aspects of the problem of environmentally safe cutting]. Rezanie i instrument v tekhnologicheskikh sistemakh [Cutting and tool in technological systems]. Kharkiv, 2000, iss. 57, pp. 29–34. 2. Khudobin L.V., Zhdanov V.F. O vozmozhnosti aktivatsii SOZh impul’snymi elektricheskimi polyami [On the possibility of activation of coolant by pulsed electric fields]. Chistovaya obrabotka detalei mashin [Finishing of machine parts]. Saratov, 1980, pp. 49–53. 3. Maddamasetty A., Revuru S., Sitaramaraju A. Performance evaluation of nanographite-based cutting fluid in machining process. Materials and Manufacturing Processes, 2014, vol. 29 (5). DOI: 10.1080/10426914.2014. 893060.
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