Surface modification of work material using Powder Metallurgey (P/M) compacted electrodes during Electric Discharge Machining (EDM)

Surface modification of work material using Powder Metallurgey (P/M) compacted electrodes during Electric Discharge Machining (EDM)

Powder metallurgy (P/M) electrodes are additional innovation in the operation of electrical discharge machining (EDM). In this process the EDM cutting tool is produced from powders by the P/M compaction method. This research project aims to develop the P/M compacted electrodes from powders and used...

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Main Author: Khan, Ahsan Ali
Format: Monograph
Language:English
Published: s.n 2012
Subjects:
T Technology (General)
Online Access:http://irep.iium.edu.my/35212/
http://irep.iium.edu.my/35212/
http://irep.iium.edu.my/35212/1/EDW_B11-026-0504.pdf
id iium-35212
recordtype eprints
spelling iium-352122015-05-18T02:06:06Z http://irep.iium.edu.my/35212/ Surface modification of work material using Powder Metallurgey (P/M) compacted electrodes during Electric Discharge Machining (EDM) Khan, Ahsan Ali T Technology (General) Powder metallurgy (P/M) electrodes are additional innovation in the operation of electrical discharge machining (EDM). In this process the EDM cutting tool is produced from powders by the P/M compaction method. This research project aims to develop the P/M compacted electrodes from powders and used them to modify the surfaces of the work materials. Two types of composite P/M electrodes were developed from copper (Cu), cobalt (Co), chromium (Cr) and tantalum carbide (TaC) powders. These are Co-Cr and Cu-TaC composite electrodes. Their properties have been examined, and this led to the establishment of their suitability for EDM. They were used in electrical discharge machining of mild steel and titanium alloy (Ti-6Al-4V) materials. The EDM process outputs of material removal rate (MRR), tool wear rate (TWR) and electrode wear ratio (EWR) were used to evaluate the electrodes’ performance. Their suitability in EDM was thus established. The compacting pressure and composition were also found to influence their EDM performance in addition to the machining parameters. During the EDM, migration occurred from the electrode materials on to the work material surfaces. Analysis showed that Cr and Co were found on the surface of the mild steel after machining. Similarly, Cu and TaC were also found on the EDMed Ti-6Al-4V surface. This confirmed the electrodes’ ability to alloy work material during EDM. This alloying capability was used to increase the surface hardness of the mild steel by the Co-Cr electrode to about 85.30 HRB from 70.37 HRB. The Cu-TaC electrode was also used to improve the micro-hardness of the Ti-6Al-4V to 552.6 Hv. Further work is recommended on extension of this technique to improve the wear characteristics of the Ti-6Al-4V alloy with these electrodes. s.n 2012-06-05 Monograph NonPeerReviewed application/pdf en http://irep.iium.edu.my/35212/1/EDW_B11-026-0504.pdf Khan, Ahsan Ali (2012) Surface modification of work material using Powder Metallurgey (P/M) compacted electrodes during Electric Discharge Machining (EDM). Research Report. s.n, Kuala Lumpur. (Unpublished) EDW B11-026-0504
repository_type Digital Repository
institution_category Local University
institution International Islamic University Malaysia
building IIUM Repository
collection Online Access
language English
topic T Technology (General)
spellingShingle T Technology (General)
Khan, Ahsan Ali
Surface modification of work material using Powder Metallurgey (P/M) compacted electrodes during Electric Discharge Machining (EDM)
description Powder metallurgy (P/M) electrodes are additional innovation in the operation of electrical discharge machining (EDM). In this process the EDM cutting tool is produced from powders by the P/M compaction method. This research project aims to develop the P/M compacted electrodes from powders and used them to modify the surfaces of the work materials. Two types of composite P/M electrodes were developed from copper (Cu), cobalt (Co), chromium (Cr) and tantalum carbide (TaC) powders. These are Co-Cr and Cu-TaC composite electrodes. Their properties have been examined, and this led to the establishment of their suitability for EDM. They were used in electrical discharge machining of mild steel and titanium alloy (Ti-6Al-4V) materials. The EDM process outputs of material removal rate (MRR), tool wear rate (TWR) and electrode wear ratio (EWR) were used to evaluate the electrodes’ performance. Their suitability in EDM was thus established. The compacting pressure and composition were also found to influence their EDM performance in addition to the machining parameters. During the EDM, migration occurred from the electrode materials on to the work material surfaces. Analysis showed that Cr and Co were found on the surface of the mild steel after machining. Similarly, Cu and TaC were also found on the EDMed Ti-6Al-4V surface. This confirmed the electrodes’ ability to alloy work material during EDM. This alloying capability was used to increase the surface hardness of the mild steel by the Co-Cr electrode to about 85.30 HRB from 70.37 HRB. The Cu-TaC electrode was also used to improve the micro-hardness of the Ti-6Al-4V to 552.6 Hv. Further work is recommended on extension of this technique to improve the wear characteristics of the Ti-6Al-4V alloy with these electrodes.
format Monograph
author Khan, Ahsan Ali
author_facet Khan, Ahsan Ali
author_sort Khan, Ahsan Ali
title Surface modification of work material using Powder Metallurgey (P/M) compacted electrodes during Electric Discharge Machining (EDM)
title_short Surface modification of work material using Powder Metallurgey (P/M) compacted electrodes during Electric Discharge Machining (EDM)
title_full Surface modification of work material using Powder Metallurgey (P/M) compacted electrodes during Electric Discharge Machining (EDM)
title_fullStr Surface modification of work material using Powder Metallurgey (P/M) compacted electrodes during Electric Discharge Machining (EDM)
title_full_unstemmed Surface modification of work material using Powder Metallurgey (P/M) compacted electrodes during Electric Discharge Machining (EDM)
title_sort surface modification of work material using powder metallurgey (p/m) compacted electrodes during electric discharge machining (edm)
publisher s.n
publishDate 2012
url http://irep.iium.edu.my/35212/
http://irep.iium.edu.my/35212/
http://irep.iium.edu.my/35212/1/EDW_B11-026-0504.pdf
first_indexed 2023-09-18T20:50:33Z
last_indexed 2023-09-18T20:50:33Z
_version_ 1777409964693782528

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