Optimization of working parameters of water jet cutting in terms of depth and width of cut

Abstract

The purpose of this study is to optimize different operational parameters, such as the nozzle diameter, traverse velocity, standoff distance, and pump pressure, with reference to cutting efficiency parameters, namely, depth and width of cut, in the cutting operation using a pure water jet on Sardinian basalt samples. Width of cut, which has not been previously mentioned in literature, was used as the second cutting efficiency parameter in this study. Also, 37 water jet cutting tests on Sardinian basalt samples were carried out based on the factorial design of the experiment at two levels and with the four operational parameters given above using Design Expert 7.0. In addition to these cutting tests, control and repetition tests were also performed and in total, 72 cutting operations were made in this study. The two-factor interaction (2FI) model was developed utilizing experimental measurements for the depth and width of cut after performing 37 cutting operations. The adequacy of the predicted regression model equations was tested using the very well-known method of analysis of variance. These model equations were used to optimize the operational parameters for the desired depth and width of cut. Cuttability charts indicating the optimum working point with respect to the depth and width of cut for Sardinian basalt samples were developed and presented in this study. These charts could be of help in the natural stone industry in terms of a more efficient usage of the water jet cutting machine. As a result of this study, the optimum values of working parameters for Sardinian basalt stone samples were found to be 0.8 mm for the nozzle diameter, 90 MPa for the pressure, 5 mm for the standoff distance, and 4 m/min for the traverse velocity for the pure water jet cutting system. In these optimum cutting conditions, a depth of 7.694 mm and a width of 1.986 mm were predicted to be the cutting values. These values go well with the measurements.

Keywords

water jet rock cutting depth of cut width of cut cutting efficiency optimization

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References

Summers

D. A.

Waterjetting technology, 1995 (Great Britain, E & FN Spon, Alden Press).

Hashish

Trend towards new applications of water jet technology. In Water jet, a flexible technology. (Eds Monno

Annoni

Ravasio

), Milano, Italy, 2007, pp. 1–32 (Polipress – Politecnico di Milano).

Engin

I. C.

Investigation of cuttability properties of some Turkish marbles with abrasive water jet. PhD Thesis, University of Hacettepe, Turkey, 2006.

Costa

Surface finishing operations on marbles with water jet. PhD Thesis, University of Cagliari, Italy, 2007.

Brook

Summers

D. A.

The penetration of rock by high speed water jets. Int. J. Rock Mech. Min., 1969, 6, 249–258.

Bortolussi

Summers

D. A.

Yazıcı

Jet cutting technology. In Proceedings of the Nineth International Symposium, Sendai, Japan, 4–6 October 1988, B 1.1.

Hagan

P. C.

The cuttability of rock using a high pressure water jet, 1992 (Sydney, Australia, The University of New South Wales (UNSW)).

Agus

Bortolussi

Ciccu

Kim

W. M.

Manca

P. P.

The influence of rock properties on waterjet performance. In Proceedings of the Seventh American Water Jet Conference (Ed. Hashish

), Seattle, 28–31 August 1993, vol. 1, pp. 427–442.

Miranda

M. R.

Quintino

Microstructural study of material removal mechanisms observed in abrasive waterjet cutting of calcareous stones. Mater. Charact., 2005, 54, 370–377.

10.

Huang

Z. C.

Hou

G. R.

Wang

Feng

X. Y.

The effect of high pressure abrasive water jet cutting parameters on cutting performance of granite. Key Eng. Mat., 2006, 304, 560–564.

11.

Louis

Mohamed

Pude

Cutting mechanism and cutting efficiency for water pressures above 600 MPa. In Proceedings of the WJTA American Water Jet Conference, Houston, 17–19 August 2003, 1-A.

12.

Doi

Inoue

Katakura

Ichiryu

Performance of water jet cutter for perforating and cutting construction material. In Proceedings of the Nineteenth International Conference on Water jetting, Nottingham, UK, 15–17 October 2008, pp. 95–104.

13.

Venugopalan

Sathiyamoorthy

Investigation through factorial design on novel method of preparing vanadium carbide using carbon during aluminothermic reduction. J. Mater. Process. Tech., 2006, 176, 133–139.

14.

Gaitonde

V. N.

Karnik

S. R.

Campos Rubio

Esteves Correia

Abrao

A. M.

Paulo Davim

Analysis of parametric influence on delamination in high-speed drilling of carbon fiber reinforced plastic composites. J. Mater. Process Tech., 2008, 203, 431–438.

15.

Ozcelik

Kanbir

E. S.

Development of cuttability abacuses in diamond wire cutting method. In Proceedings of the Seventh International Marble and Natural Stone Congress of Turkey, Afyon, 14–15 October 2010, pp. 161–170.

16.

Gursel

Performance assessment of water jet cutting and surface treatment. MSc Thesis, Hacettepe University, 2009.

17.

Wright

Wolgamott

Zink

Optimizing water blast power. In Proceedings of 2001 WJTA American Waterjet Conference (Ed. Hashish

), Minneapolis, Minnesota, 18–21 August 2001, pp. 661–668 (Water Jet Technology Association).

18.

Brown

E. T.

ISRM. Rock characterization, testing and monitoring: ISRM suggested methods, 1981 (Pergamon, Oxford).