Study on tool wear mechanism under cryogenic CO2-assisted minimum quantity lubrication technology

Cryogenic CO2-assisted minimum quantity lubrication milling technology is a green processing with broad application prospects. Aiming at the problem of tool wear in cryogenic difficult-to-machine materials and influence relevant parameters on wear, this study used coated cemented carbide tools to perform experiments under conditions. The micro-morphology chip was observed, energy spectrum contact area analyzed. results show that reducing CO2 temperature increasing oil flow can improve wear. mechanisms are mainly abrasive diffusion oxidation sawtooth degree optimal parameter group more conducive breaking than dry-cutting wet-cutting groups. tool-chip an important factor affecting wear; higher temperature, faster At same time, it verified replace cutting fluid hard-to-machine certain