Electro-discharge machining of SUS 304 stainless steel with TaC powder-mixed dielectric

Mohd Zain, Zakaria and Mohammed , Baba Ndaliman and Khan, Ahsan Ali and Ali, Mohammad Yeakub (2012) Electro-discharge machining of SUS 304 stainless steel with TaC powder-mixed dielectric. Advanced Materials Research, 576. pp. 72-75. ISSN 1022-6680

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Abstract

Powder-mixed dielectric fluid is one of the innovations of electro-discharge machining (EDM) which seeks to improve the process outputs by addition of powders to the dielectric during machining. In the present study, the influence of TaC powder in kerosene dielectric fluid on EDM process outputs was investigated. Experiments were conducted with the outputs as material removal rate (MRR), surface roughness (Ra) and micro-hardness. During the EDM, the discharge current was varied between 2.5 and 6.5 A, while powder concentration ranges between 5.0 and 15.0 g/l. Results indicate that the highest MRR of 0.38 g/min was obtained with TaC concentration of 15 g/l at the current of 6.5 A. TaC powder addition does not affect both the MRR and Ra at lower current. However, the level of micro-hardness attained was influenced by TaC powder concentration in dielectric fluid, the highest being 1,040 Hv with 5.0 g/l at the current of 2.5 A.

Item Type:	Article (Journal)
Additional Information:	3129/25670
Uncontrolled Keywords:	EDM, TaC, surface roughness, micro-hardness, material removal rate
Subjects:	T Technology > TS Manufactures > TS200 Metal manufactures. Metalworking
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Prof. Dr. Ahsan Ali Khan
Date Deposited:	07 Sep 2012 14:14
Last Modified:	07 Sep 2012 14:14
URI:	http://irep.iium.edu.my/id/eprint/25670

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