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Impact of supply conditions of liquid nitrogen on tool wear and surface integrity when machining the Ti-6Al-4V titanium alloy

Type
Articles dans des revues avec comité de lecture
Auteur
AYED, Yessine
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
GERMAIN, Guénaël
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
PUBILL MELSIO, Anna-Maria
552313 Air liquide France Industrie
KOWALEWSKI, Pierre
552313 Air liquide France Industrie
LOCUFIER, Damien
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]

URI
http://hdl.handle.net/10985/16583
DOI
10.1007/s00170-017-0604-7
Date
2017
Journal
The International Journal of Advanced Manufacturing Technology

Résumé

Cryogenic-assisted machining has already shown its advantages on the process and the machining parameters have been analysed. However, part of the coolant jet characteristics as the pressure and flow rate have not been completely studied and optimized. Hence, the main objective of this study is to investigate the impact of these parameters on tool wear and surface integrity when machining the titanium alloy Ti-6Al-4V. Several nozzle diameters have been therefore employed in order to vary the pressure and the flow rate. A new nozzle holder has been developed to ensure the replacement of these calibrated nozzles of different diameters. The machining tests have allowed to draw attention to the impact of the pressure and the flow rate oftheliquid nitrogenjet not only ontool life but also on surface integrity. Indeed, the increase of flow rate and pressure increases tool life. Moreover, surface integrity has been greatly improved notably atthe highest pressure and the highest flow rate.

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Documents liés

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  • Effect of supply conditions of liquid nitrogen on the cryogenic assisted machining of the Ti64 Titanium alloy 
    AYED, Yessine; GERMAIN, Guénaël; PUBILL MELSIO, Anna-Maria; KOWALEWSKI, Pierre (2016)
    This study focuses on the optimization of the machining assisted by cryogenic cooling. The main objective is to analyze the effect of the pressure and the flow of liquid nitrogen on tool life when machining titanium alloy ...
  • Development of a numerical model for the understanding of the chip formation in high-pressure water-jet assisted machining 
    AYED, Yessine; ROBERT, Camille; GERMAIN, Guénaël; AMMAR, Amine (Elsevier, 2016)
    The aim of this study is to develop a new numerical cutting model that includes fluid structure interaction and to take into account heat transfer between the water-jet, the workpiece and the chip. This has been achieved ...
  • Experimental Study of tool Wear Mechanisms in Conventional and High Pressure Coolant Assisted Machining of Titanium Alloy Ti17 
    AYED, Yessine; GERMAIN, Guénaël; AMMAR, Amine; FURET, Benoit (Trans Tech Publications Ltd, 2013)
    Titanium alloys are known for their excellent mechanical properties, especially at high temperature. But this specificity of titanium alloys can cause high cutting forces as well as a significant release of heat that may ...
  • Numerical analysis of constitutive coefficients effects on FE simulation of the 2D orthogonal cutting process: application to the Ti6Al4V 
    YAICH, Mariem; AYED, Yessine; BOUAZIZ, Zoubeir; GERMAIN, Guénaël (Springer, 2016)
    In this paper, a deep study of constitutive parameters definition effect is done in order to guarantee sufficient reliability of the finite element machining modeling. The case of a particular biphasic titanium alloy Ti6Al4V ...
  • Thermo-mechanical characterization of the Ti17 titanium alloy under extreme loading conditions 
    AYED, Yessine; GERMAIN, Guénaël; AMMAR, Amine; FURET, Benoit (Springer, 2016)
    Understanding the physics of chip formation in machining operations is often difficult due to the complexity of the phenomena involved, such as the extreme and complex loading conditions that occur in the cutting zone. In ...

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