Optimización del proceso de torneado del acero AISI 304 mediante el sistema de lubricación / enfriamiento con nanofluido criogénico

Abstract

In the present research work, carbon dioxide was used for cooling and the MQL system with biodegradable oil Unist Coolube 221 O EP, with nanoparticles of titanium oxide as an additive for spray lubrication of the models used with the help of the software, where the experiment with two fittings of, The experiment with two fittings of 30 degrees orientation and cutting speed of 195 m/min, presented more favorable results in the CFD analysis as surface quality and tool life due to several factors related to the hydraulics of the system and its geometry makes this configuration of the cutting fluid to reach the tool adequately; applying CFD analysis, the minimum temperature value at which the proposed model cools the cutting tool was determined and results in - 74.15 degrees Celsius, this is a higher value than the measured value of -62 degrees Celsius with the thermocouple in the constructed system, that is because the finite element software considers ideal conditions without taking into account the losses that occur in the system, these were validated with in situ experimentation, which yielded similar values in the shape of the cryogenic fluid beam, validating the proposed designs, which helped in the optimization proposal, verifying with the laboratory analysis, where the useful life of the cutting tool in the experiment would reach the wear criterion at 140 minutes of machining which is the most appropriate.