Análisis de la dureza superficial del acero AISI 01 (K460) sometido a tratamientos térmicos de templado y revenido utilizando como medio de enfriamiento aceites automotrices de diferentes viscosidades

Abstract

This investigation has analyzed the significance of automotive oils with different viscosities utilized for AISI 01 (K460) steel quenching. Chapter I contains a theoretical synthesis about definitions and parameters that were obtained from different sources of scientific information. This information has been utilized as support to understand heat treatments, as well as to know the procedure to follow. Chapter II describes the utilized methodology previous to the experimental study, where different parameters are detailed, such as, the utilized machines and equipment with its model, the parameters to be considered for preparation and experimentation, also the standards that have been considered. In this section, the definition of factors and levels to be analyzed is highlighted, as well as the number of experiments required to perform the analysis of variance. An important matter was that the base material to be tested has been validated by spectrophotometry, surface hardness and metallographic analysis. In Chapter III, all the evidences of the experimental process are presented, from the configuration of temperatures and time in the ovens, furthermore the preparation of the oil in its respective container for quenching. After carrying out the quenching, considering the different factors and levels, a tempering was done to relieve the internal steel stresses. Finally, the surface hardness measurements were carried out according to the ASTM E 18 standard, obtaining five measurements for each specimen. Finally, Chapter IV presents the analysis of results, first, developing an analysis of variance (ANOVA) by using specialized software. The obtained results were interpreted for the reader's understanding, in addition to presenting a brief economic analysis focused mainly on supplies to develop the investigation.