Surface modification by EDM using CO-CR sintered powder metallurgy electrod

Khan, Ahsan Ali and Ndaliman , Mohammed Baba and Ali , Mohammad Yeakub and Mansor, Mas Hafizah and Idrus, Nurul-Ain (2012) Surface modification by EDM using CO-CR sintered powder metallurgy electrod. In: IIUM Engineering Congress 2012, 3 - 5 July 2012, Kuala Lumpur, Malaysia. (Unpublished)

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Abstract

In this investigation, the powder metallurgy (PM) electrode developed from cobalt (Co)and chromium (Cr) powders was used in electrical discharge machining (EDM). This new Co-Cr sintered electrode was used to machine mild steel workpiece with kerosene dielectric fluid. The main objective is to modify its surface characteristics and secure increased surface hardness. The EDM variables of peak current, pulse duration and pulse interval were applied to investigate these surface properties. Scanning electron microscopy / energy dispersive x-ray spectroscopy SEM/EDX analysis confirmed migration of electrode materials (Co and Cr) onto the EDMed surface. Improved hardness was obtained on the mild steel, the highest being 85.3 HRB. Thus, the

Item Type:	Conference or Workshop Item (Full Paper)
Additional Information:	3129/25875
Uncontrolled Keywords:	EDM, Co-Cr electrode, Surface modification, Powder metallurgy
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:	04 Jan 2013 14:52
Last Modified:	10 Jul 2014 11:03
URI:	http://irep.iium.edu.my/id/eprint/25875

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