Characterisation of abrasive water-jet process for pocket milling in Inconel 718

G.A. Escobar-Palafox, R.S. Gault, K. Ridgway

Research output: Contribution to conferencePaper

28 Citations (Scopus)

Abstract

Experiments were carried out in Inconel 718 in order to investigate the possibility of using the abrasive water-jet process for producing 3D features such as pockets. A design of experiments approach was taken, considering variables such as water pressure, nozzle stand-off distance, traverse speed, nozzle orifice diameter, abrasive mass flow rate and tool-path step over distance. The experimental variables were related to depth of cut and pocket geometry. Statistical analysis was carried out in order to develop mathematical models which include process variable interactions and quadratic terms. This led to models with high correlation and prediction power which allow a better understanding of the process and can form the base for further process optimisation. The models were validated with additional experiments and showed good agreement with the water-jet system. The results showed that water pressure has a non-linear behaviour and is of paramount importance for controlling the depth of cut and geometrical errors. Additionally, nozzle diameter and the interaction between feed rate and abrasive mass flow are critical factors affecting the depth of cut.
Original languageEnglish
Pages404-408
Number of pages5
DOIs
Publication statusPublished - 19 Jul 2012
Event5th CIRP Conference on High Performance Cutting 2012, HPC 2012 - Zurich, Switzerland
Duration: 4 Jun 20127 Jun 2012

Conference

Conference5th CIRP Conference on High Performance Cutting 2012, HPC 2012
Abbreviated titleHPC2012
CountrySwitzerland
CityZurich
Period4/06/127/06/12

Fingerprint

Abrasives
Nozzles
Water
Orifices
Design of experiments
Statistical methods
Experiments
Flow rate
Mathematical models
Geometry

Keywords

  • milling
  • pocketing
  • waterjet machining
  • abrasives
  • design of experiments
  • jets
  • mass transfer
  • milling (machining)
  • nozzle design
  • nozzles
  • optimization
  • abrasive mass flow rate
  • additional experiments
  • correlation and prediction
  • nonlinear behaviours
  • process optimisation
  • stand-off distance (SoD)
  • water-jet machining
  • fighter aircraft

Cite this

Escobar-Palafox, G. A., Gault, R. S., & Ridgway, K. (2012). Characterisation of abrasive water-jet process for pocket milling in Inconel 718. 404-408. Paper presented at 5th CIRP Conference on High Performance Cutting 2012, HPC 2012, Zurich, Switzerland. https://doi.org/10.1016/j.procir.2012.04.072
Escobar-Palafox, G.A. ; Gault, R.S. ; Ridgway, K. / Characterisation of abrasive water-jet process for pocket milling in Inconel 718. Paper presented at 5th CIRP Conference on High Performance Cutting 2012, HPC 2012, Zurich, Switzerland.5 p.
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abstract = "Experiments were carried out in Inconel 718 in order to investigate the possibility of using the abrasive water-jet process for producing 3D features such as pockets. A design of experiments approach was taken, considering variables such as water pressure, nozzle stand-off distance, traverse speed, nozzle orifice diameter, abrasive mass flow rate and tool-path step over distance. The experimental variables were related to depth of cut and pocket geometry. Statistical analysis was carried out in order to develop mathematical models which include process variable interactions and quadratic terms. This led to models with high correlation and prediction power which allow a better understanding of the process and can form the base for further process optimisation. The models were validated with additional experiments and showed good agreement with the water-jet system. The results showed that water pressure has a non-linear behaviour and is of paramount importance for controlling the depth of cut and geometrical errors. Additionally, nozzle diameter and the interaction between feed rate and abrasive mass flow are critical factors affecting the depth of cut.",
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Escobar-Palafox, GA, Gault, RS & Ridgway, K 2012, 'Characterisation of abrasive water-jet process for pocket milling in Inconel 718', Paper presented at 5th CIRP Conference on High Performance Cutting 2012, HPC 2012, Zurich, Switzerland, 4/06/12 - 7/06/12 pp. 404-408. https://doi.org/10.1016/j.procir.2012.04.072

Characterisation of abrasive water-jet process for pocket milling in Inconel 718. / Escobar-Palafox, G.A.; Gault, R.S.; Ridgway, K.

2012. 404-408 Paper presented at 5th CIRP Conference on High Performance Cutting 2012, HPC 2012, Zurich, Switzerland.

Research output: Contribution to conferencePaper

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AB - Experiments were carried out in Inconel 718 in order to investigate the possibility of using the abrasive water-jet process for producing 3D features such as pockets. A design of experiments approach was taken, considering variables such as water pressure, nozzle stand-off distance, traverse speed, nozzle orifice diameter, abrasive mass flow rate and tool-path step over distance. The experimental variables were related to depth of cut and pocket geometry. Statistical analysis was carried out in order to develop mathematical models which include process variable interactions and quadratic terms. This led to models with high correlation and prediction power which allow a better understanding of the process and can form the base for further process optimisation. The models were validated with additional experiments and showed good agreement with the water-jet system. The results showed that water pressure has a non-linear behaviour and is of paramount importance for controlling the depth of cut and geometrical errors. Additionally, nozzle diameter and the interaction between feed rate and abrasive mass flow are critical factors affecting the depth of cut.

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Escobar-Palafox GA, Gault RS, Ridgway K. Characterisation of abrasive water-jet process for pocket milling in Inconel 718. 2012. Paper presented at 5th CIRP Conference on High Performance Cutting 2012, HPC 2012, Zurich, Switzerland. https://doi.org/10.1016/j.procir.2012.04.072