This paper presents an analysis of the transient flow, on pump shut-down, in abrasive suspension jet cutting machines as part of an effort to develop a fine-beam cutting system. The analysis was motivated by a need to clearly understand the problem of line and nozzle clogging, which would be magnified by the higher operating pressures and the use of smaller nozzles for fine-beam systems. Simulation studies show that currently recommended means of avoiding this problem may not be adequate. Using the tools developed for this study, more positive mechanisms and a proposed system to counter this problem were investigated.
Issue Section:
Technical Brief
Topics:
Flow (Dynamics),
Machinery,
Nozzles,
Pressure vessels,
Pumps,
Unsteady flow,
Cutting,
Jet cutting
1.
You, Ming-Qing, Zhang, Hai, Chai, Zi-Pu, and Cheng, Da-Zhong, 1993, “Study on a Direct Injection Abrasive Jet System,” 7th American Water Jet Conference, August 28-31, Seattle, Washington.
2.
Hollinger, R. H., Perry, W. D., and Swanson, R. K., 1989, “Precision Cutting with a Low-Pressure, Coherent Abrasive Suspension Jet,” 5th American Water Jet Conference, August 29-31, Toronto, Canada.
3.
Hashish, M., 1991, “Cutting with a High-Pressure Abrasive Suspension Jets,” 6th American Water jet Conference, August 24-27, Houston, Texas.
4.
Brandt, C., and Loius, H., 1999, “Profiling with 400 MPa Fine-Beam Abrasive Water Jet,” 10th American Waterjet Conference, August 14-17, Houston, Texas.
5.
Miller, D., 1999, “Micro Abrasive Waterjets (MAWs),” 10th American Waterjet Conference, August 14-17, Houston, Texas.
6.
Brandt, C., Louis, H., Meier, G., and Tebbing, G., 1994, “Abrasive Suspension Jets at Working Pressures up to 200 MPa,” Jet Cutting Technology, A. G. Allen, ed., Mechanical Engineering Publications Ltd., London.
7.
van de Vegte, John, 1990, Feedback Control Systems, 2nd edition, Prentice Hall.
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by ASME
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