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Improving machinability of Inconel 718 with a new hybrid machining technique

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Abstract

In this paper, by joining three non-traditional machining methods — plasma-enhanced machining, cryogenic machining, and ultrasonic vibration assisted machining — a new hybrid machining technique for machining of Inconel 718 is presented. Cryogenic machining reduces the temperature in the cutting zone, and therefore decrease tool wear and increases tool life, while plasma-enhanced machining helps to increase the temperature in the workpiece to make it softer. Also, applying ultrasonic vibrations to the tool helps to improve cutting quality and to prolong tool life by lowering, mainly, the cutting force and improving the dynamic cutting stability. This study experimentally investigates the effect of cutting parameters on cutting performance in the machining of Inconel 718 and compares the results of hybrid machining and conventional machining (CM). It is found that the hybrid method results in better surface finish and improves tool life in hard cutting at low cutting speeds as compared to the CM method.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Lenjan Branch, Islamic Azad University, Isfahan, Iran

    Taghi Feyzi

  2. Department of Mechanical Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran

    S. Mohsen Safavi

Authors
  1. Taghi Feyzi
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  2. S. Mohsen Safavi
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Correspondence to Taghi Feyzi.

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Feyzi, T., Safavi, S.M. Improving machinability of Inconel 718 with a new hybrid machining technique. Int J Adv Manuf Technol 66, 1025–1030 (2013). https://doi.org/10.1007/s00170-012-4386-7

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  • DOI: https://doi.org/10.1007/s00170-012-4386-7

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