Influence of work and tool materials on parameters of electrical discharge machining(EDM)

Influence of the properties of work and tool materials on material removal rate (MRR), tool wear ratio (TWR), thickness of the recast layer, surface roughness and accuracy of machining in EDM process has been investigated. Copper brass, stainless steel, mild steel and grey cast iron have been used i...

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Main Authors:	Amin, A. K. M. Nurul, Sarder , A. K.
Format:	Article
Language:	English
Published:	IIUM Press 2002
Subjects:	TS200 Metal manufactures. Metalworking
Online Access:	http://irep.iium.edu.my/29561/ http://irep.iium.edu.my/29561/1/2002_Influence_of_work_and_tool_materials_on_parameters_of_elec.pdf

id	iium-29561
recordtype	eprints
spelling	iium-295612013-07-19T03:25:06Z http://irep.iium.edu.my/29561/ Influence of work and tool materials on parameters of electrical discharge machining(EDM) Amin, A. K. M. Nurul Sarder , A. K. TS200 Metal manufactures. Metalworking Influence of the properties of work and tool materials on material removal rate (MRR), tool wear ratio (TWR), thickness of the recast layer, surface roughness and accuracy of machining in EDM process has been investigated. Copper brass, stainless steel, mild steel and grey cast iron have been used in various combinations as work and tool materials. From the experimental results it is found that MRR slows down with machining time. Apart from that it has been found that MRR and TWR are inversely proportional to the melting points of the work and tool materials respectively. Electrical conductivity of the tool material also has appreciable influence on tool wear ratio. Wear ratio was found to be minimum in the case of the copper electrode having maximum electrical conductivity. It has been also observed that for all combinations of work and tool materials, a recast layer is formed on the machined surface. It has been observed that the micro cavities formed in the cases of lower melting point electrode materials like copper and brass having higher electrical conductivity are comparatively smaller in size (2-3 μm) as compared to the sizes of the micro cavities (8-20 μm) formed in the cases of high melting pointer electrodes having also lower electrical conductivity. Consequently the machined surface roughness produced in the latter cases is higher. It has been also observed that the debris concentration increases due to side sparking of the electrode. The tendency of debris concentration is the maximum at the middle of the tool¬job interface resulting in high bottom surface inaccuracy, specially when high melting point work materials are machined with electrodes like brass having low melting point and relatively lower electrical conductivity. From the point of view of MRR, brass electrodes have been found to be the most suitable tool, but from the point of view of machining accuracy and surface finish copper electrodes were found to yield the best result for the given set of job materials. So it was concluded that brass electrodes should be recommended for rough machining and copper electrodes for finish machining of the given work materials. IIUM Press 2002 Article PeerReviewed application/pdf en http://irep.iium.edu.my/29561/1/2002_Influence_of_work_and_tool_materials_on_parameters_of_elec.pdf Amin, A. K. M. Nurul and Sarder , A. K. (2002) Influence of work and tool materials on parameters of electrical discharge machining(EDM). IIUM Engineering Journal, 3 (1). pp. 17-22. ISSN 1511-788X
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TS200 Metal manufactures. Metalworking
spellingShingle	TS200 Metal manufactures. Metalworking Amin, A. K. M. Nurul Sarder , A. K. Influence of work and tool materials on parameters of electrical discharge machining(EDM)
description	Influence of the properties of work and tool materials on material removal rate (MRR), tool wear ratio (TWR), thickness of the recast layer, surface roughness and accuracy of machining in EDM process has been investigated. Copper brass, stainless steel, mild steel and grey cast iron have been used in various combinations as work and tool materials. From the experimental results it is found that MRR slows down with machining time. Apart from that it has been found that MRR and TWR are inversely proportional to the melting points of the work and tool materials respectively. Electrical conductivity of the tool material also has appreciable influence on tool wear ratio. Wear ratio was found to be minimum in the case of the copper electrode having maximum electrical conductivity. It has been also observed that for all combinations of work and tool materials, a recast layer is formed on the machined surface. It has been observed that the micro cavities formed in the cases of lower melting point electrode materials like copper and brass having higher electrical conductivity are comparatively smaller in size (2-3 μm) as compared to the sizes of the micro cavities (8-20 μm) formed in the cases of high melting pointer electrodes having also lower electrical conductivity. Consequently the machined surface roughness produced in the latter cases is higher. It has been also observed that the debris concentration increases due to side sparking of the electrode. The tendency of debris concentration is the maximum at the middle of the tool¬job interface resulting in high bottom surface inaccuracy, specially when high melting point work materials are machined with electrodes like brass having low melting point and relatively lower electrical conductivity. From the point of view of MRR, brass electrodes have been found to be the most suitable tool, but from the point of view of machining accuracy and surface finish copper electrodes were found to yield the best result for the given set of job materials. So it was concluded that brass electrodes should be recommended for rough machining and copper electrodes for finish machining of the given work materials.
format	Article
author	Amin, A. K. M. Nurul Sarder , A. K.
author_facet	Amin, A. K. M. Nurul Sarder , A. K.
author_sort	Amin, A. K. M. Nurul
title	Influence of work and tool materials on parameters of electrical discharge machining(EDM)
title_short	Influence of work and tool materials on parameters of electrical discharge machining(EDM)
title_full	Influence of work and tool materials on parameters of electrical discharge machining(EDM)
title_fullStr	Influence of work and tool materials on parameters of electrical discharge machining(EDM)
title_full_unstemmed	Influence of work and tool materials on parameters of electrical discharge machining(EDM)
title_sort	influence of work and tool materials on parameters of electrical discharge machining(edm)
publisher	IIUM Press
publishDate	2002
url	http://irep.iium.edu.my/29561/ http://irep.iium.edu.my/29561/1/2002_Influence_of_work_and_tool_materials_on_parameters_of_elec.pdf
first_indexed	2023-09-18T20:43:25Z
last_indexed	2023-09-18T20:43:25Z
_version_	1777409516258721792

Influence of work and tool materials on parameters of electrical discharge machining(EDM)

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