Green Metalworking Fluids for sustainable machining applications: A review

Machining is widely used to produce machine components for various applications in automotive, aerospace, and marine industries. The numbers of machining operations have greatly increased over the last few decades with the increase in the demand for machine elements and innovations in the manufacturing field. Mineral-based Metalworking Fluids (MWFs) are frequently used in bulk during a cutting process to obtain dimensional accuracy and better surface quality on machined elements, but researchers have documented several adverse health and environment effects of MWFs. As a sustainable alternative to mineral oil, vegetable oil has shown better performance during operations without any harmful effects on human health or ecological systems. Herein, the health and environmental effects of the mineral oil-based MWFs are reviewed in detail, and sustainable application possibilities for process optimization in machining using vegetable oil based nanofluids are highlighted. (C) 2020 Elsevier Ltd. All rights reserved.