Surface quality produced in EDM with tungsten carbide and copper compacted electrodes

Electrical discharge machining (EDM) is one of the most commonly used technique to machine very hard materials. Materials like hardened tool steels, titanium and its alloys and difficult-to-machine materials can be easily processed with EDM. The machining performance to a great extent depends on the...

Full description

Bibliographic Details
Main Authors:	Khan, Ahsan Ali, Mohammed, Baba Ndaliman, Mohamad, Ummu Atiqah Khairiyah, Sulong, Nurul Farhana, Mohd Zain, Zakaria
Format:	Article
Language:	English
Published:	Trans Tech publication 2015
Subjects:	TS200 Metal manufactures. Metalworking
Online Access:	http://irep.iium.edu.my/44118/ http://irep.iium.edu.my/44118/ http://irep.iium.edu.my/44118/ http://irep.iium.edu.my/44118/1/44118_-_Surface_quality_produced_in_EDM_with_tungsten_carbide_and_copper_compacted_electrodes.pdf

id	iium-44118
recordtype	eprints
spelling	iium-441182017-11-21T09:18:25Z http://irep.iium.edu.my/44118/ Surface quality produced in EDM with tungsten carbide and copper compacted electrodes Khan, Ahsan Ali Mohammed, Baba Ndaliman Mohamad, Ummu Atiqah Khairiyah Sulong, Nurul Farhana Mohd Zain, Zakaria TS200 Metal manufactures. Metalworking Electrical discharge machining (EDM) is one of the most commonly used technique to machine very hard materials. Materials like hardened tool steels, titanium and its alloys and difficult-to-machine materials can be easily processed with EDM. The machining performance to a great extent depends on the composition of the electrode. This paper presents the machining performance of powder metallurgy (PM) compacted electrodes made from titanium carbide (TiC) and copper (Cu) powders. The Cu-TiC electrodes made up of 70% of TiC and 30% of Cu powders. They were compacted at a pressure of 6,000 psi (41.34 MPa). Mild steel was used as the workpiece material. Machining was conducted with the peak current, pulse-on time and pulse-off time as the electrical input variables. The output variables of the investigation were work surface roughness and its hardness. It was found that work surface roughness increases with increase in current and pulse-on-time. However, it decreases with increase in pulse-off time. It was found that the highest value of surface roughness (14.782 μm) was found at highest peak current (6.5 A), highest pulse on-time (7.5 μs) and lowest pulse-off time (6.5 μs). The highest value of surface hardness (57.3 BHB) was found at the same machining conditions. The smoothest surface (14.782 μm) was found at the lowest peak current (3.5 A), lowest pulse on-time (6.0 μs) and highest pulse-off time (8.5 μs). The lowest value of surface hardness (42.9 BHB) was found at the same machining conditions. Trans Tech publication 2015-07-20 Article PeerReviewed application/pdf en http://irep.iium.edu.my/44118/1/44118_-_Surface_quality_produced_in_EDM_with_tungsten_carbide_and_copper_compacted_electrodes.pdf Khan, Ahsan Ali and Mohammed, Baba Ndaliman and Mohamad, Ummu Atiqah Khairiyah and Sulong, Nurul Farhana and Mohd Zain, Zakaria (2015) Surface quality produced in EDM with tungsten carbide and copper compacted electrodes. Advanced Materials Research, 1115. pp. 24-28. ISSN 1662-8985 http://www.scientific.net/AMR.1115.24 10.4028/www.scientific.net/AMR.1115.24
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 Mohammed, Baba Ndaliman Mohamad, Ummu Atiqah Khairiyah Sulong, Nurul Farhana Mohd Zain, Zakaria Surface quality produced in EDM with tungsten carbide and copper compacted electrodes
description	Electrical discharge machining (EDM) is one of the most commonly used technique to machine very hard materials. Materials like hardened tool steels, titanium and its alloys and difficult-to-machine materials can be easily processed with EDM. The machining performance to a great extent depends on the composition of the electrode. This paper presents the machining performance of powder metallurgy (PM) compacted electrodes made from titanium carbide (TiC) and copper (Cu) powders. The Cu-TiC electrodes made up of 70% of TiC and 30% of Cu powders. They were compacted at a pressure of 6,000 psi (41.34 MPa). Mild steel was used as the workpiece material. Machining was conducted with the peak current, pulse-on time and pulse-off time as the electrical input variables. The output variables of the investigation were work surface roughness and its hardness. It was found that work surface roughness increases with increase in current and pulse-on-time. However, it decreases with increase in pulse-off time. It was found that the highest value of surface roughness (14.782 μm) was found at highest peak current (6.5 A), highest pulse on-time (7.5 μs) and lowest pulse-off time (6.5 μs). The highest value of surface hardness (57.3 BHB) was found at the same machining conditions. The smoothest surface (14.782 μm) was found at the lowest peak current (3.5 A), lowest pulse on-time (6.0 μs) and highest pulse-off time (8.5 μs). The lowest value of surface hardness (42.9 BHB) was found at the same machining conditions.
format	Article
author	Khan, Ahsan Ali Mohammed, Baba Ndaliman Mohamad, Ummu Atiqah Khairiyah Sulong, Nurul Farhana Mohd Zain, Zakaria
author_facet	Khan, Ahsan Ali Mohammed, Baba Ndaliman Mohamad, Ummu Atiqah Khairiyah Sulong, Nurul Farhana Mohd Zain, Zakaria
author_sort	Khan, Ahsan Ali
title	Surface quality produced in EDM with tungsten carbide and copper compacted electrodes
title_short	Surface quality produced in EDM with tungsten carbide and copper compacted electrodes
title_full	Surface quality produced in EDM with tungsten carbide and copper compacted electrodes
title_fullStr	Surface quality produced in EDM with tungsten carbide and copper compacted electrodes
title_full_unstemmed	Surface quality produced in EDM with tungsten carbide and copper compacted electrodes
title_sort	surface quality produced in edm with tungsten carbide and copper compacted electrodes
publisher	Trans Tech publication
publishDate	2015
url	http://irep.iium.edu.my/44118/ http://irep.iium.edu.my/44118/ http://irep.iium.edu.my/44118/ http://irep.iium.edu.my/44118/1/44118_-_Surface_quality_produced_in_EDM_with_tungsten_carbide_and_copper_compacted_electrodes.pdf
first_indexed	2018-09-07T06:27:50Z
last_indexed	2018-09-07T06:27:50Z
_version_	1610929060327718912

Surface quality produced in EDM with tungsten carbide and copper compacted electrodes

Similar Items