High Performance in EDM Machining of AISI D2 Hardened Steel

Faizul Ezmat Abdul Hamid; Mohd Amri Lajis

doi:10.4028/www.scientific.net/AMR.500.259

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 500High Performance in EDM Machining of AISI D2...

High Performance in EDM Machining of AISI D2 Hardened Steel

Abstract:

In this paper an attempt has been made to investigate the performance of an electrode made through powder metallurgy (PM) of copper tungsten during electrical discharge machining (EDM). Experimental results are presented on electrical discharge machining of AISI D2 hardened steel in kerosene with a copper tungsten (Cu35% - W65%) tool electrode made through PM method with a constant duty factor of 80%. In term of high performance EDM process, higher peak current (>20A) and pulse duration (>400µs) with a high machining efficiency were used. Experimental results have shown that machining at a peak current of 40A and pulse duration of 400µs yields the highest material removal rate (MRR) whereas machining at a peak current of 20A and pulse duration of 400µs yields the lowest tool wear rate (TWR). The lowest surface roughness appears at the lowest material removal rate which is at a peak current of 20A and pulse duration of 600µs. The optimum machining performance can be performed by the combination of pulse duration and peak current at 600µs and 40A respectively.

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Periodical:

Advanced Materials Research (Volume 500)

Pages:

259-265

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.500.259

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Online since:

April 2012

Authors:

Faizul Ezmat Abdul Hamid, Mohd Amri Lajis

Keywords:

Electrical Discharge Machining (EDM), High Performance, Material Removal Rate (MRR), Powder metallurgy, Tool Wear Rate

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