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Pulsating Abrasive Water Jet Cutting Using a Standard Abrasive Injection Cutting Head – Preliminary Tests

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Advances in Water Jetting (Water Jet 2019)

Part of the book series: Lecture Notes in Mechanical Engineering ((LNME))

Abstract

The paper focuses on research into disintegration effects of a pulsating abrasive water jet using a standard abrasive injection cutting head. Forced pulses of a frequency of 20 kHz were generated by a piezoelectric pulse generator using a sonotrode placed in a high pressure system in front of a water jet nozzle. Several variants of the water jet generation in the cutting head were investigated - a continuous and pulsating water jets without the presence of the focusing tube to verify the pulse formation in the mixing chamber. Consequently, an abrasive water jet and a pulsating abrasive water jet with an installed focusing tube were studied. At a selected water pressure of 70 MPa, an increase in cutting effects of the pulsating abrasive water jet on average by 15–20% compared to the continuous abrasive water jet of the same parameters was observed. The authors consider that the increase in efficiency is mainly caused by better distribution of abrasives over the focusing tube cross-section, largely due to separated slugs of water forming the pulsating water jet. In this regard, the authors see the potential of further increase in the efficiency of abrasive water jets. Modeling and simulation of the water flow using an appropriate computational system can contribute to achieving an optimal configuration of the pulsating abrasive water jet.

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Abbreviations

WJ:

Water jet

PWJ:

Pulsating water jet

AWJ:

Abrasive water jet

PAWJ:

Pulsating abrasive water jet

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Acknowledgement

This work was supported by a grant of the Czech Science Foundation (18-25035S), by a project of the Technology Agency of the Czech Republic (TH04020218) and by a project for the long-term conceptual development of research organisations RVO: 68145535. The authors are very thankful for the support.

Author information

Authors and Affiliations

  1. Institute of Geonics, Czech Academy of Sciences, Ostrava, Czechia

    Libor Sitek, Petr Hlaváček, Josef Foldyna & Vladimír Foldyna

  2. Hammelmann GmbH, Carl-Zeiss-Straße 6-8, Oelde, Germany

    Michael Jarchau

Authors
  1. Libor Sitek
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  2. Petr Hlaváček
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  3. Josef Foldyna
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  4. Michael Jarchau
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  5. Vladimír Foldyna
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Corresponding author

Correspondence to Libor Sitek .

Editor information

Editors and Affiliations

  1. Institute of Geonics of the Czech Academy of Sciences, Ostrava, Czech Republic

    Dagmar Klichová

  2. Institute of Geonics of the Czech Academy of Sciences, Ostrava, Czech Republic

    Libor Sitek

  3. Faculty of Manufacturing Technologies TUKE with a seat in Prešov, Prešov, Slovakia

    Sergej Hloch

  4. Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana, Slovenia

    Joško Valentinčič

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Sitek, L., Hlaváček, P., Foldyna, J., Jarchau, M., Foldyna, V. (2021). Pulsating Abrasive Water Jet Cutting Using a Standard Abrasive Injection Cutting Head – Preliminary Tests. In: Klichová, D., Sitek, L., Hloch, S., Valentinčič, J. (eds) Advances in Water Jetting. Water Jet 2019. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-53491-2_20

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  • DOI: https://doi.org/10.1007/978-3-030-53491-2_20

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-53490-5

  • Online ISBN: 978-3-030-53491-2

  • eBook Packages: EngineeringEngineering (R0)

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