Influence of electrode cooling on recast layers and micro crack in EDM of titanium

Electrical discharge machining (EDM) process is a manufacturing method for shaping hard metals and formation of deep and complex shaped hole by spark erosion in electrical conductive materials such as metals, metallic alloys, ceramics etc. EDM process is achieved by a series of recurring electrical...

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Main Authors: Abdulkareem, Suleiman, Khan, Ahsan Ali, Mohamed , Konneh
Format: Article
Language:English
Published: Trans Tech Publications, Switzerland 2011
Subjects:
Online Access:http://irep.iium.edu.my/1869/
http://irep.iium.edu.my/1869/1/Suleiman%2C_Ahsan%2C_Konneh.pdf
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author Abdulkareem, Suleiman
Khan, Ahsan Ali
Mohamed , Konneh
author_facet Abdulkareem, Suleiman
Khan, Ahsan Ali
Mohamed , Konneh
author_sort Abdulkareem, Suleiman
building IIUM Repository
collection Online Access
description Electrical discharge machining (EDM) process is a manufacturing method for shaping hard metals and formation of deep and complex shaped hole by spark erosion in electrical conductive materials such as metals, metallic alloys, ceramics etc. EDM process is achieved by a series of recurring electrical discharges between the electrode and workpiece in the presence of dielectric fluid. EDM unique feature of using thermal energy to machine conductive materials irrespective of material hardness has been its major advantage in the manufacture of aerospace, surgical, mould, die, automotive and as well as sport components. The effectiveness of EDM process depends among other factors on the thermal properties of the electrode material. The objective of this study is to study the influence of electrode cooling on recast layers and micro crack in EDM of titanium. The machining parameters investigated in the present study are current intensity (I), pulse on-time (Ton), pulse off-time (Toff) and gap voltage (V), which are of great interest for EDM researchers. The copper electrode is used to EDM titanium workpiece at room temperature and at sub-zero temperature using liquid nitrogen. The influence of cooling of copper electrode on recast layers and micro crack on titanium were investigated using scanning electron microscope (SEM) and has been reported in this study.
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spelling iium-18692011-11-04T03:18:05Z http://irep.iium.edu.my/1869/ Influence of electrode cooling on recast layers and micro crack in EDM of titanium Abdulkareem, Suleiman Khan, Ahsan Ali Mohamed , Konneh TS200 Metal manufactures. Metalworking Electrical discharge machining (EDM) process is a manufacturing method for shaping hard metals and formation of deep and complex shaped hole by spark erosion in electrical conductive materials such as metals, metallic alloys, ceramics etc. EDM process is achieved by a series of recurring electrical discharges between the electrode and workpiece in the presence of dielectric fluid. EDM unique feature of using thermal energy to machine conductive materials irrespective of material hardness has been its major advantage in the manufacture of aerospace, surgical, mould, die, automotive and as well as sport components. The effectiveness of EDM process depends among other factors on the thermal properties of the electrode material. The objective of this study is to study the influence of electrode cooling on recast layers and micro crack in EDM of titanium. The machining parameters investigated in the present study are current intensity (I), pulse on-time (Ton), pulse off-time (Toff) and gap voltage (V), which are of great interest for EDM researchers. The copper electrode is used to EDM titanium workpiece at room temperature and at sub-zero temperature using liquid nitrogen. The influence of cooling of copper electrode on recast layers and micro crack on titanium were investigated using scanning electron microscope (SEM) and has been reported in this study. Trans Tech Publications, Switzerland 2011 Article PeerReviewed application/pdf en http://irep.iium.edu.my/1869/1/Suleiman%2C_Ahsan%2C_Konneh.pdf Abdulkareem, Suleiman and Khan, Ahsan Ali and Mohamed , Konneh (2011) Influence of electrode cooling on recast layers and micro crack in EDM of titanium. Advanced Materials Research, 264-65. pp. 1180-1186. ISSN 1022-6680 http://www.ttp.net/978-3-03785-053-4/10.html DOI:10.4028/www.scientific.net/AMR.264-265.1180
spellingShingle TS200 Metal manufactures. Metalworking
Abdulkareem, Suleiman
Khan, Ahsan Ali
Mohamed , Konneh
Influence of electrode cooling on recast layers and micro crack in EDM of titanium
title Influence of electrode cooling on recast layers and micro crack in EDM of titanium
title_full Influence of electrode cooling on recast layers and micro crack in EDM of titanium
title_fullStr Influence of electrode cooling on recast layers and micro crack in EDM of titanium
title_full_unstemmed Influence of electrode cooling on recast layers and micro crack in EDM of titanium
title_short Influence of electrode cooling on recast layers and micro crack in EDM of titanium
title_sort influence of electrode cooling on recast layers and micro crack in edm of titanium
topic TS200 Metal manufactures. Metalworking
url http://irep.iium.edu.my/1869/
http://irep.iium.edu.my/1869/
http://irep.iium.edu.my/1869/
http://irep.iium.edu.my/1869/1/Suleiman%2C_Ahsan%2C_Konneh.pdf