“…The use of green cutting fluids has gained great attention in the era of green machining and green manufacturing. Several studies about green cutting fluids are reported in various vegetable oils like rapeseed oil (Belluco & De Chiffre, 2004) and shear butter, palm kernel oil (Mahadi et al, 2017;Abdollah et al, 2020), coconut oil (Xavior & Adithan, 2009), rice bran oil (Edla et al, 2022), sunflower oil (Ozcelik et al, 2011), avocado oil (Reeves & Menezes, 2017), pongamia oil, cottonseed oil, canola oil, sesame oil, jatropha oil (Talib & Rahim, 2018), and groundnut oil (Rashmi et al, 2019). The lubricating qualities of the base Tribological property evaluation, optimization and performance of waste sunflower oil based green cutting fluid with silicon dioxide nanoparticles as additive oil, particularly its tribological properties, determine its stability and usability.…”