Observations on Cutting With 600-MPa Waterjets

Author:

Hashish Mohamed1

Affiliation:

1. Flow International Corporation, Kent, WA 98032

Abstract

Waterjet technology development for 600-MPa (87-Ksi) operations involves efforts on machining process development, pumps, plumbing, nozzles, and machining systems development. In this paper, data will be presented on cutting with water and abrasive waterjet at these elevated pressures. The effects of waterjet (WJ) and abrasive waterjet (AWJ) parameters on cutting rates of several materials are analyzed. It is observed that the power required for cutting is reduced as the pressure increases. Sheet metal and composites can be cut effectively with waterjets. The quality of the cut surfaces, however, improves by increasing pressure, adding abrasives, and operating at optimal standoff distances.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Safety, Risk, Reliability and Quality

Reference6 articles.

1. Raghaven, C., and Ting, E., 1991, “Hyper Pressure Waterjet Cutting of Thin Sheet Metal,” Proc. 6th American Water Jet Conference, Houston, TX, Water Jet Technology Association, pp. 493–504.

2. Hashish, M., Steele, D. E., and Bothell, D. H., 1997, “Machining with Super-Pressure (690 MPa) Waterjets,” Int. J. Mach. Tools Manuf., 37, No. 4, pp. 465–479.

3. Hashish, M., 1999, “Cutting with Waterjets at 690 MPa,” High Pressure Technology, Eric Roll, ed., ASME PVP-Vol. 384, pp. 33–39.

4. Franz, N. C., 1974, “The Influence of Standoff Distance on Cutting with High Velocity Fluid Jets,” Proc. Second Int. Symposium on Jet Cutting Technology, BHRA Fluid Engineering, Cambridge, England, pp. B3-37–B3-46.

5. Howells, W. G. , 1990, “Polymerblasting with SUPER-WATER® from 1974 to 1989: A Review,” Int. J. Waterjet Technology,1, No. 1, pp. 1–15.

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