Formation of micro-cracks and recast layer during EDM of mild steel using copper electrodes

Abstract. The present paper reports on the influence of process parameters on formation of micro-cracks and recast layer on mild steel during EDM using a copper electrode. Surface quality was evaluated on the basis of work surface roughness, micro cracks and thickness of the recast layer. Current, p...

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Main Authors:	Khan, Ahsan Ali, Adesta, Erry Yulian Triblas, Mohammad , Yeakub Ali
Format:	Book Chapter
Language:	English
Published:	International Islamic University Malaysia 2011
Subjects:	TS200 Metal manufactures. Metalworking
Online Access:	http://irep.iium.edu.my/25552/ http://irep.iium.edu.my/25552/ http://irep.iium.edu.my/25552/4/Chapter_9.pdf

id	iium-25552
recordtype	eprints
spelling	iium-255522012-09-24T07:41:42Z http://irep.iium.edu.my/25552/ Formation of micro-cracks and recast layer during EDM of mild steel using copper electrodes Khan, Ahsan Ali Adesta, Erry Yulian Triblas Mohammad , Yeakub Ali TS200 Metal manufactures. Metalworking Abstract. The present paper reports on the influence of process parameters on formation of micro-cracks and recast layer on mild steel during EDM using a copper electrode. Surface quality was evaluated on the basis of work surface roughness, micro cracks and thickness of the recast layer. Current, pulse-on time, pulse-off time and voltage were the variable parameters for the present investigation. Micro cracks were found on the surface due to rapid heating and cooling of the surface during EDM. Micro cracks reduced in number and size when the surface was EDMed with a low current and a short pulse-on time. A layer of recast layer on the work surface was observed after EDM. The thickness of the recast layer was higher while a higher current together with a higher pulse-on time were used. It was concluded that in order to have a high quality surface it should be machined with lower values of current, pulse-on time and voltage. International Islamic University Malaysia 2011 Book Chapter PeerReviewed application/pdf en http://irep.iium.edu.my/25552/4/Chapter_9.pdf Khan, Ahsan Ali and Adesta, Erry Yulian Triblas and Mohammad , Yeakub Ali (2011) Formation of micro-cracks and recast layer during EDM of mild steel using copper electrodes. In: Advanced Machining Processes. International Islamic University Malaysia, Kuala Lumpur, Malaysia, pp. 44-48. ISBN 9789674181628 http://rms.research.iium.edu.my/bookstore/default.aspx
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 Khan, Ahsan Ali Adesta, Erry Yulian Triblas Mohammad , Yeakub Ali Formation of micro-cracks and recast layer during EDM of mild steel using copper electrodes
description	Abstract. The present paper reports on the influence of process parameters on formation of micro-cracks and recast layer on mild steel during EDM using a copper electrode. Surface quality was evaluated on the basis of work surface roughness, micro cracks and thickness of the recast layer. Current, pulse-on time, pulse-off time and voltage were the variable parameters for the present investigation. Micro cracks were found on the surface due to rapid heating and cooling of the surface during EDM. Micro cracks reduced in number and size when the surface was EDMed with a low current and a short pulse-on time. A layer of recast layer on the work surface was observed after EDM. The thickness of the recast layer was higher while a higher current together with a higher pulse-on time were used. It was concluded that in order to have a high quality surface it should be machined with lower values of current, pulse-on time and voltage.
format	Book Chapter
author	Khan, Ahsan Ali Adesta, Erry Yulian Triblas Mohammad , Yeakub Ali
author_facet	Khan, Ahsan Ali Adesta, Erry Yulian Triblas Mohammad , Yeakub Ali
author_sort	Khan, Ahsan Ali
title	Formation of micro-cracks and recast layer during EDM of mild steel using copper electrodes
title_short	Formation of micro-cracks and recast layer during EDM of mild steel using copper electrodes
title_full	Formation of micro-cracks and recast layer during EDM of mild steel using copper electrodes
title_fullStr	Formation of micro-cracks and recast layer during EDM of mild steel using copper electrodes
title_full_unstemmed	Formation of micro-cracks and recast layer during EDM of mild steel using copper electrodes
title_sort	formation of micro-cracks and recast layer during edm of mild steel using copper electrodes
publisher	International Islamic University Malaysia
publishDate	2011
url	http://irep.iium.edu.my/25552/ http://irep.iium.edu.my/25552/ http://irep.iium.edu.my/25552/4/Chapter_9.pdf
first_indexed	2018-09-07T04:51:42Z
last_indexed	2018-09-07T04:51:42Z
_version_	1610923012052221952

Formation of micro-cracks and recast layer during EDM of mild steel using copper electrodes

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