Electro-Discharge Machining of Aluminum Alloy with Nickel Powder-Mixed Dielectric

Abstract

Powder-mixed dielectric fluid is one of the innovations of electrode-discharge machining (EDM) which seeks to improve the process outputs by addition of Nickel powders to the dielectric during machining. In the present study, the influence of Nickel powder in kerosene dielectric fluid on EDM process outputs was investigated. Experiments were conducted with the outputs as material removal rate (MRR) and surface roughness(Ra). During the EDM, the discharge current was varied between 3 and 15 A, while powder concentration ranges between 2 and 10 g/l. Results indicate that the highest MRR of 39.888 mm3 /min was obtained with Nickel powder concentration of 6 g/l at the current of 9A, where as the lowest SR of 3.397 μm was obtained with Nickel concentration of 3 g/l at the current of 3A.

Uso de un arreglo ortogonal para el análisis del proceso de electroerosión por penetración con electrodos de forma de grafito y cobre sobre micro-fundición de aluminio

“…Cuando la necesidad de proceso de desbaste a bajo amperaje se trate, se evidencia que el cobre con una geometría rectangular del electrodo se procesará eficientemente (T. Muthuramalingam & Mohan, 2013;T. Muthuramalingam & Mohan, 2015;Srinivasa & Eshwara, 2018;Tiwari, 2017). En contraste con (Ali et al, 2015;Kumar, Kumar, Tewatia, & Yadav, 2012), los resultados de (MMR) y (Ra) pueden cambiar al trabajar con altos amperajes, consecuentemente los rangos de trabajo de cada parámetro así como el tipo de material y dieléctrico son trascendentalmente importantes.…”