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Jan-Eric Ståhl

Jan-Eric Ståhl

Professor

Jan-Eric Ståhl

Effects of Cutting Speed when Turning Age Hardened Inconel 718 with PCBN Tools of Binderless and Low-CBN Grades

Author

  • Volodymyr Bushlya
  • Oleksandr Gutnichenko
  • Jinming Zhou
  • Pajazit Avdovic
  • Jan-Eric Ståhl

Summary, in English

Application of polycrystalline cubic boron nitride (PCBN) tools as an alternative for ceramic and cemented carbide tools in machining superalloys has been frequently identified as a solution for enhancing process efficiency but only a limited number of studies has been done in this area. The current study explores the effect of the cutting speed, which was varied in a wide range (2-14m/s), on machinability of age hardened Inconel 718 with PCBN tools. Performance of binderless PCBN grade and grade with low-cBN content was evaluated in terms of tool life, tool wear, cutting forces and surface quality. Chip formation and process dynamics were analyzed as well. It was found that low-cBN grade provided 70-90% better surface finish and tool life than the binderless at moderate speeds (5-8m/s). Performance of both grades at low and high speed ranges was non-satisfactory due to notching and flaking respectively. At low cutting speed adhesive wear plays a major role while as the speed increases a chemical wear becomes dominant.

Department/s

  • Production and Materials Engineering
  • SPI: Sustainable Production Initiative

Publishing year

2013

Language

English

Pages

497-523

Publication/Series

Machining Science and Technology

Volume

17

Issue

4

Document type

Journal article

Publisher

Taylor & Francis

Topic

  • Materials Engineering

Keywords

  • Inconel 718
  • PCBN
  • surface finish
  • tool wear
  • turning

Status

Published

ISBN/ISSN/Other

  • ISSN: 1091-0344