Research progress of eco-friendly grinding technology for aviation nickel-based superalloys

Nickel-based superalloys, as typically difficult-to-machine materials, are mainly used in aero-engine, ship, chemical industry, and other fields. To further enhance the surface quality of nickel-based superalloys, prolong the life of wheels, save the related costs, and achieve sustainable development, many exploratory works on eco-friendly sustainable grinding technology have been carried out by relevant researchers. Based on the action and material properties of nickel-based superalloys, the lubrication mechanism and research results of MQL are first summarized. Then, the latest research progress of micro-lubrication technology and its synergism technology is introduced briefly. In addition, the relationship between MQL penetration characteristics, grinding process characteristics, and eco-friendly sustainability is established. Finally, the technical mechanism and latest achievements of Cryo-MQL, NMQL, and EMQL are summarized. The aim of those works is to reveal the MQL synergistic mechanism and provide a theoretical basis and technical guidance for its grinding engineering application of nickel-based superalloys.