Quality
Waterjet Newsletter – 08/07/2007
Low
Pressure (5-20 kpsi) AWJ Cutting
One problem associated with low
pressure AWJ cutting is that the nozzle may not generate enough vacuum to
suck in abrasive. A series of tests were done to determine the vacuum levels
of the nozzle as well as the maximum abrasive flow rates that were allowed by
the vacuum condition. The graphs show the allowable abrasive flow rates at
different pressures and nozzle sizes.
where h: depth of cut, mm;
P: pressure, MPa; do: orifice, mm; dn: mixing tube, mm; ma: abrasive flow rate, g/min; u:
cutting speed, mm/min. * Taggart,
D.G., Nanduri, M., & Kim, T.J. (1999)
Characterization of low pressure AWJ cutting, in Mohamed Hashish Ed.),
Proceedings of the 10th American Waterjet
Conference, Houston, Texas, August 14-17, Paper 11. |
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