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Journal of Applied Sciences

Year: 2005 | Volume: 5 | Issue: 10 | Page No.: 1757-1761
DOI: 10.3923/jas.2005.1757.1761

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Authors


Ahsan Ali Khan


Mohd Efendee Bin Awang


Ahmad Azwari Bin Annuar


Keywords


  • Carbide
  • abrasive flow rate
  • abrasive waterjet
  • garnet
  • surface finish
Research Article

Surface Roughness of Carbides Produced by Abrasive Water Jet Machining

Ahsan Ali Khan, Mohd Efendee Bin Awang and Ahmad Azwari Bin Annuar
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 be machined by conventional techniques. Cutting was performed on a water jet machine model WJ 4080. The abrasive used in investigations was garnet of mesh size 80. It was tried to cut carbide with low and medium level of abrasive flow rate, but 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-1. 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 jet 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 didnt 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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How to cite this article

Ahsan Ali Khan, Mohd Efendee Bin Awang and Ahmad Azwari Bin Annuar, 2005. Surface Roughness of Carbides Produced by Abrasive Water Jet Machining. Journal of Applied Sciences, 5: 1757-1761.

DOI: 10.3923/jas.2005.1757.1761

URL: https://scialert.net/abstract/?doi=jas.2005.1757.1761

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