OBRABOTKAMETALLOV Vol. 27 No. 1 2025 31 TECHNOLOGY Investigation of vegetable oil-based cutting fl uids enhanced with nanoparticle additions in turning operations Javvadi Eswara Manikanta 1, a, Nitin Ambhore 2, b, *, Gopala Rao Thellaputta 3, c 1 Department of Mechanical Engineering, Shri Vishnu Engineering College for Women (A), Bhimavaram, Andhra Pradesh, 534202, India 2 Department of Mechanical Engineering, Vishwakarma Institute of Technology, SPPU, Maharashtra, Pune 411037, India 3 Department of Mechanical Engineering, St. Ann’s College of Engineering & Technology (Autonomous), Chirala, Andhra Pradesh, 523187, India a https://orcid.org/0000-0002-0881-4899, manijem66@gmail.com; b https://orcid.org/0000-0001-8468-8057, nitin.ambhore@viit.ac.in; c https://orcid.org/0000-0001-5622-4140, drtgopalarao@gmail.com 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. 2025 vol. 27 no. 1 pp. 20–33 ISSN: 1994-6309 (print) / 2541-819X (online) DOI: 10.17212/1994-6309-2025-27.1-20-33 ART I CLE I NFO Article history: Received: 11 November 2024 Revised: 25 November 2024 Accepted: 17 December 2024 Available online: 15 March 2025 Keywords: Vegetable oils Nanofl uids High-Speed machining Environmental sustainability ABSTRACT Introduction. Currently, the use of vegetable oil-based cutting fl uids with nanoparticles is being implemented in turning operations. These fl uids provide a sustainable and high-performance solution by improving lubrication, cooling, and surface quality. The use of vegetable oil-based cutting fl uids with nanoparticles also promotes an ecofriendly approach in the manufacturing industry. These fl uids serve as an alternative to conventional cutting fl uids, which are hazardous chemical mixtures that pose a risk to both the environment and the operator. The purpose of the work. The present study focuses on the use of cutting fl uids based on environmentally friendly vegetable oils in the turning process. This work investigates the performance of turning AISI 1014 steel with various nanoparticle combinations and ratios. The methods of investigation. In this study, fi ve diff erent vegetable oils — corn oil, coconut oil, sunfl ower oil, palm oil, and neem oil — were used as base fl uid. CuO, Al2O3, graphene, and powdered multi-walled carbon nanotubes were added to the base fl uid to create nanofl uids. Cutting fl uids were developed with varying weight concentrations of 0.20 %, 0.40 %, 0.60 %, 0.80 %, and 1 %, and its performance when machining AISI 1014 steel was investigated. Results and Discussion. The results indicated that, among the vegetable oils, corn oil had the greatest eff ect on viscosity and thermal conductivity. Graphene nanoparticles showed promising results in reducing cutting force, temperature, and surface roughness. When using corn oil containing 0.8 wt. % graphene nanoparticles, a 104 N reduction in cutting force was observed, this is 29.8 % less than that achieved with pure corn oil. At a high concentration (1 wt. %), the reduction in load decreases due to signifi cant agglomeration of nanoparticles. The optimal nanoparticle concentration in the base fl uid (corn oil) is 0.8 wt. %. For citation: Manikanta J.E., Ambhore N., Thellaputta G.R. Investigation of vegetable oil-based cutting fl uids enhanced with nanoparticle additions in turning operations. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science, 2025, vol. 27, no. 1, pp. 20–33. DOI: 10.17212/1994-6309-2025-27.1-20-33. (In Russian). ______ * Corresponding author Ambhore Nitin, Ph.D. (Engineering), Assistant Professor Vishwakarma Institute of Technology, Pune - 411037, Maharashtra, India Tel.: +91-2026950441, e-mail: nitin.ambhore@viit.ac.in References 1. Ghosh S., Rao P.V. Application of sustainable techniques in metal cutting for enhanced machinability: a review. Journal of Cleaner Production, 2015, vol. 100, pp. 17–34. DOI: 10.1016/j.jclepro.2015.03.039. 2. O’Sullivan D., Cotterell M. Temperature measurement in single point turning. Journal of Materials Processing Technology, 2001, vol. 118 (1–3), pp. 301–308. DOI: 10.1016/S0924-0136(01)00853-6. 3. Waydande R.P., Ghatge D.A. Performance evaluation of cutting parameters for surface roughness & power consumption in turning of 904l stainless steel using vegetable oil based cutting fl uids. Advanced Manufacturing and Materials Science: Selected Extended Papers of ICAMMS. Springer, 2018, pp. 317–325. DOI: 10.1007/978-3-31976276-0_32.
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