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Current research trends on dry, near-dry and powder mixed electrical discharge machining

Rahman Khan, Md. Ashikur and Rahman, Md. Mustafizur and Mat Noor, Muhamad and Maleque, Md. Abdul (2011) Current research trends on dry, near-dry and powder mixed electrical discharge machining. Advanced Materials Research, 264. pp. 956-961. ISSN 1022-6680

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Abstract

Electrical discharge machining (EDM) technique has been widely used in modern metal working industry for producing complex cavities in dies and moulds, which are otherwise difficult to create by conventional machining. The process has the advantage of being able to machine hardened tool steels. However, its low machining efficiency and poor surface finish restricted its further applications. To address these problems, one relatively new technique used to improve the efficiency and surface finish is EDM in the presence of powder suspended in the dielectric fluid. Powder mixed electric discharge machining (PMEDM) is one of the recent innovations for the enhancement of capabilities of EDM process. In PMEDM, the electrically conductive powder is mixed in the dielectric fluid of EDM, which reduces the insulating strength of the dielectric fluid and increases the spark gap between the tool and workpiece. As a result, the process becomes more stable, thereby, improving the material removal rate (MRR) and surface finish. Moreover, the surface develops high resistance to corrosion and abrasion. This paper presents the current research trends on dry, near dry EDM and review on research carried out in the area of PMEDM.

Item Type: Article (Journal)
Additional Information: 6103/1623
Uncontrolled Keywords: PMEDM; Dry; Near-Dry; Dielectric; Die Sinking; Performance; Surface modification
Subjects: T Technology > TJ Mechanical engineering and machinery
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User: Prof Dr. Md Abdul Maleque
Date Deposited: 02 Sep 2011 11:14
Last Modified: 27 Jun 2013 10:38
URI: http://irep.iium.edu.my/id/eprint/1623

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