Resumen de The minimum quantity of lubricant technique in grinding of steel using a wheel cleaning system
E. Bianchi, H.J. de Mello, R. Aguiar
The application of minimum quantity of lubricant (MQL) for metal cutting has emerged as an alternative for reducing the abundant flow of cutting fluids, thus achieving cleaner production. Although considered an innovative technique in grinding operations, the widespread application is hindered mainly due to the high heat generation and the clogging of wheel pores caused by machined chips, harming the final product quality and increasing tool wear. This study sought to improve MQL use in grinding. Thus, besides the conventional MQL injected at the wheel/workpiece interface, a compressed air jet was also added, in order to clean the clogged wheel pores from the mixture of MQL oil and machined chips. Experiments were conducted using external cylindrical plunge grinding on AISI 4340 quenched and tempered steel, and a vitrified cubic boron nitrite (CBN) wheel. The lubri-refrigeration methods employed were the conventional with abundant flow, conventional MQL (both without any ...
