Avaliação de fluido de corte com base em óleo vegetal de mamona no processo de furação em liga de Alumínio 6061

Abstract

Cutting fluids play a crucial role in machining and are widely used in nearly all processes, including drilling. Most of these fluids are composed of petroleumderived mineral oils, which pose environmental problems. To address this issue, it is necessary to implement new fluids based on vegetable oils. Due to their renewable nature, rapid environmental degradation, and nontoxicity to humans, it is essential to study these new types of fluids. This study aims to evaluate the efficiency of a cutting fluid based on castor oil, compared to a commercially available mineral oilbased cutting fluid, in the drilling process of 6061 aluminum alloy. The evaluation is conducted through monitoring electric current, which can be correlated with machining effort, and analyzing drill bit wear using a microscope. The experiment is proposed to be divided into three types of tests: the first without fluid, the second with the commercially available mineral oilbased fluid, and the third with the castor oilbased fluid. Each type of test involved drilling 18 holes with an 8mm drill bit at a depth of 25mm, and the conditions were triplicated to test the repeatability of the experiments. The results of the experiments were analyzed by comparing each type of test. Based on these comparisons, it can be concluded that the castor oilbased fluid performs well but still falls short of the commercial fluid.