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Effect of cryogenic assistance on hole shrinkage during Ti6Al4V drilling

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Abstract

This paper focuses on the impact of cryogenic assistance on the drilling of Ti6Al4V titanium alloy. It develops a relation between the phenomenon of hole shrinkage and measurements performed either during or after the machining operation. Indeed, because this phenomenon is apparently strongly associated with heat generation, which is the main issue in titanium alloy drilling, this work proposes to verify the effect of liquid nitrogen cooling on hole shrinkage, quantify it, and then relate it to these measurements. Specifically, the cutting forces and final hole geometry are analyzed and their variations are explained using the collected data on hole shrinkage.

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Acknowledgments

The Ti6Al4V plates, nitrogen storage/delivery equipment, and machining tools used to perform the drilling tests were supplied by AIRBUS, AIR LIQUIDE, and ISCAR, respectively. Their support is gratefully acknowledged by the authors.

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Authors and Affiliations

  1. Arts et Metiers Institute of Technology, LaBoMaP, HESAM Université, 71250, Cluny, France

    Johan Merzouki, Gérard Poulachon & Frédéric Rossi

  2. Airbus Central Research and Technology—Technocampus Composites, Chemin du Chaffault, 44340, Bouguenais, France

    Johan Merzouki & Guillaume Abrivard

  3. Arts et Metiers Institute of Technology, LAMPA, 2 Boulevard du Ronceray, 49035, Angers, France

    Yessine Ayed

Authors
  1. Johan Merzouki
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  2. Gérard Poulachon
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  3. Frédéric Rossi
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  4. Yessine Ayed
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  5. Guillaume Abrivard
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Correspondence to Frédéric Rossi.

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Merzouki, J., Poulachon, G., Rossi, F. et al. Effect of cryogenic assistance on hole shrinkage during Ti6Al4V drilling. Int J Adv Manuf Technol 108, 2675–2686 (2020). https://doi.org/10.1007/s00170-020-05381-z

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  • DOI: https://doi.org/10.1007/s00170-020-05381-z

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