Alloy Inconel 718 by 3D Micro-Electro Discharge Machining

Abstract:

This article aims to show the effects of the Micro-EDM process that influences the hole taper by comparing the parameters values during micro-drilling hole on the inconel 718 material. The condition of Micro-EDM drilling spark on the surface workpiece was 300 μm of depth and 200 μm of diameter tungsten carbide electrode. The experiment was carried out under the cover of hydrocarbon, using fluid dielectric cooling. The experiment parameters included on-time duty factor, off-time, voltage, frequency, and current, respectively. The experiment, it was found that the hole taper an immense effect on the machinability of drilling the workpieces, cause melting and recasting in the spark area, making a decrease in the ability of debris removal. Moreover, the experiment result, the tapered workpiece showed a minimized is 16.87 s, when using parameters at current 32 mA, frequency 150 Hz, and voltage 110 v, respectively. The optimal parameters to affected minimum hole taper is 0.195 degree, when using parameters at current 32 mA, frequency 130 Hz, and voltage 110 v, respectively.

• Periodical: Applied Mechanics and Materials (Volume 590)
• Pages: 239-243
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.590.239
• Online since: June 2014
• Authors: Piyapong Kumkoon*, Chana Raksiri, Chaiyakorn Jansuwan
• Keywords: 3D Micro-EDM, Alloy, Hole Taper, Inconel 718

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