Desarrollo de un sistema híbrido “Plug and Play” de lubricación pulverizada con nanofluido y fluido criogénico para mejorar los procesos de mecanizado por arranque de viruta torneado

Abstract

The present research work focuses on the development of a hybrid system, which increased the surface quality of the machined material; CO2 was used for the cryogenic fluid and the MQL system with biodegradable oil Unist Coolube 2210 EP with TiO2 nano particles as additive for the spray lubrication. The system was evaluated using an experimental methodology applying a design of experiments of 8 runs where it was proposed to run the experiments with cutting speeds of 235 and 195 m/min and feeds of 0.1 and 0.2 mm/rev using a cutting tool, a sintered carbide insert CNMG120408 in a material applicable in the Ecuadorian industry such as API L80 steel pipes with an outer diameter of 3.5 inches. For the measurement of the surface finish, a measuring instrument, the Mitutoyo SJ-210 roughness meter, was used, while for the measurement of the cutting tool flank wear, the VB life criterion equal to 300 micrometers in zone B of the insert established by the ISO3685 standard was evaluated with the help of SEM scanning microscopy. The results obtained were favorable since an increase in the cutting tool life of up to 40 percent was obtained, while in the surface finish minimum Ra roughness of 0.4 micrometers was achieved; therefore, it was possible to establish that the proposed system is efficient in this machining process.