Surface roughness of Carbides produced by abrasive water jet machining

This study presents the effect of jet pressure, abrasive flow rate and work feed rate on smoothness of the surface produced by abrasive water jet machining of carbide of grade P25. Carbide of grade P25 is very hard and cannot he machined by conventional techniques. Cutting was perfonned on a water...

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Main Authors: Khan, Ahsan Ali, Awang, Mohd Efendee, Annuar, Ahmad Azwari
Format: Article
Language:English
Published: Asian Network for Scientific Information 2005
Subjects:
Online Access:http://irep.iium.edu.my/7860/1/1757-1761.pdf
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author Khan, Ahsan Ali
Awang, Mohd Efendee
Annuar, Ahmad Azwari
author_facet Khan, Ahsan Ali
Awang, Mohd Efendee
Annuar, Ahmad Azwari
author_sort Khan, Ahsan Ali
collection IIUM
description This study presents the effect of jet pressure, abrasive flow rate and work feed rate on smoothness of the surface produced by abrasive water jet machining of carbide of grade P25. Carbide of grade P25 is very hard and cannot he machined by conventional techniques. Cutting was perfonned on a water jet machine model W J 4080. The ab rasive used in investigations was garnet of mesh size 80. It was tried to cut carbide with low and medium level of abrasive flow rate, hut the jet failed to cut carbide since it is too hard and very high level of energy is required. Minimum rate of abrasive flow that made it possible to cut carbide efficiently was 135 g min-I . It was found from the investigations that with increase in jet pressure the surface becomes smoother due to higher kinetic energy of the abrasives. But the surface near the j et entrance is smoother and the surface gradually becomes rougher downwards and is the roughest near the jet exit. Increase in abrasive flow rate also makes the surface smoother which is due to the availability of higher number of cutting edges per unit area per unit time. Feed rate didn't show significant influence on the machined surface, but it was found that the surface roughness increases drastically near the jet entrance.
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spelling oai:generic.eprints.org:78602013-07-18T07:07:27Z http://irep.iium.edu.my/7860/ Surface roughness of Carbides produced by abrasive water jet machining Khan, Ahsan Ali Awang, Mohd Efendee Annuar, Ahmad Azwari TS200 Metal manufactures. Metalworking This study presents the effect of jet pressure, abrasive flow rate and work feed rate on smoothness of the surface produced by abrasive water jet machining of carbide of grade P25. Carbide of grade P25 is very hard and cannot he machined by conventional techniques. Cutting was perfonned on a water jet machine model W J 4080. The ab rasive used in investigations was garnet of mesh size 80. It was tried to cut carbide with low and medium level of abrasive flow rate, hut the jet failed to cut carbide since it is too hard and very high level of energy is required. Minimum rate of abrasive flow that made it possible to cut carbide efficiently was 135 g min-I . It was found from the investigations that with increase in jet pressure the surface becomes smoother due to higher kinetic energy of the abrasives. But the surface near the j et entrance is smoother and the surface gradually becomes rougher downwards and is the roughest near the jet exit. Increase in abrasive flow rate also makes the surface smoother which is due to the availability of higher number of cutting edges per unit area per unit time. Feed rate didn't show significant influence on the machined surface, but it was found that the surface roughness increases drastically near the jet entrance. Asian Network for Scientific Information 2005 Article PeerReviewed application/pdf en http://irep.iium.edu.my/7860/1/1757-1761.pdf Khan, Ahsan Ali and Awang, Mohd Efendee and Annuar, Ahmad Azwari (2005) Surface roughness of Carbides produced by abrasive water jet machining. Journal of Applied Sciences, 5 (10). pp. 1757-1761. ISSN 1812-5654 http://scialert.net/abstract/?doi=jas.2005.1757.1761
spellingShingle TS200 Metal manufactures. Metalworking
Khan, Ahsan Ali
Awang, Mohd Efendee
Annuar, Ahmad Azwari
Surface roughness of Carbides produced by abrasive water jet machining
title Surface roughness of Carbides produced by abrasive water jet machining
title_full Surface roughness of Carbides produced by abrasive water jet machining
title_fullStr Surface roughness of Carbides produced by abrasive water jet machining
title_full_unstemmed Surface roughness of Carbides produced by abrasive water jet machining
title_short Surface roughness of Carbides produced by abrasive water jet machining
title_sort surface roughness of carbides produced by abrasive water jet machining
topic TS200 Metal manufactures. Metalworking
url http://irep.iium.edu.my/7860/1/1757-1761.pdf
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