Experimental Investigation of Effects of Nano-Fluid Usage on Cooling in Machining Talaşlı İmalatta Nano-Akışkan Kullanımının Soğutmaya Etkilerinin Deneysel Olarak Araştırılması
Isi Bilimi Ve Teknigi Dergisi/ Journal of Thermal Science and Technology, cilt.46, sa.1, ss.79-89, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 46 Sayı: 1
- Basım Tarihi: 2026
- Doi Numarası: 10.47480/isibted.1757702
- Dergi Adı: Isi Bilimi Ve Teknigi Dergisi/ Journal of Thermal Science and Technology
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex
- Sayfa Sayıları: ss.79-89
- Anahtar Kelimeler: Boron mineral oil–water mixture, Machining, Nano-fluid, Surface roughness, Thermo-physical property
- Ankara Yıldırım Beyazıt Üniversitesi Adresli: Evet
Özet
Application of nano-fluids in machining is becoming increasingly common due to their convenient thermo-physical properties. Previous studies indicate that adding Al2O3, MWCNT or TiO2 nano-particles into base fluids improves properties like density, viscosity, and thermal conductivity. This experimental study investigates the impact of addition of these nanoparticles at concentrations of 0.5%, 1%, and 1.5% into a boron mineral oil–water mixture. This research was carried out in three stages: Nano-fluid preparation, determination of thermo-physical properties, and machining experiments on Ti-6Al-4V alloy. Results showed that increasing nano-particle concentration led to a consistent rise in fluid density at 24.5 °C. However, similar trends were not observed for dynamic viscosity and thermal conductivity, which began to decline beyond 1% concentration and this situation was attributed to precipitation and sedimentation showing fluid instability. Furthermore, the use of nano-fluids significantly marked down temperature at the tool–workpiece interface. For instance, usage of 0.5% MWCNT reduced interface temperature by approximately 18%, in °C unit, and improved surface finish by around 25%. Besides, higher concentrations resulted in increased interface temperature and surface roughness due to particle deposition. The study concluded that nanofluids only with optimal concentrations improve machining performance, as with excessive amounts degrade the performance –a finding supported by SEM images of the cutting inserts.