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

Bushlya, Volodymyr LU ; Gutnichenko, Oleksandr LU ; Zhou, Jinming LU ; Avdovic, Pajazit and Ståhl, Jan-Eric LU (2013) In Machining Science and Technology 17(4). p.497-523
Abstract
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... (More)
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. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Inconel 718, PCBN, surface finish, tool wear, turning
in
Machining Science and Technology
volume
17
issue
4
pages
497 - 523
publisher
Taylor & Francis
external identifiers
  • wos:000326309600001
  • scopus:84887598663
ISSN
1532-2483
DOI
10.1080/10910344.2013.806105
language
English
LU publication?
yes
id
b0040882-9917-45c6-bbd3-b78809d0dae7 (old id 4212872)
date added to LUP
2016-04-01 10:38:32
date last changed
2020-01-15 01:45:40
@article{b0040882-9917-45c6-bbd3-b78809d0dae7,
  abstract     = {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.},
  author       = {Bushlya, Volodymyr and Gutnichenko, Oleksandr and Zhou, Jinming and Avdovic, Pajazit and Ståhl, Jan-Eric},
  issn         = {1532-2483},
  language     = {eng},
  number       = {4},
  pages        = {497--523},
  publisher    = {Taylor & Francis},
  series       = {Machining Science and Technology},
  title        = {Effects of Cutting Speed when Turning Age Hardened Inconel 718 with PCBN Tools of Binderless and Low-CBN Grades},
  url          = {http://dx.doi.org/10.1080/10910344.2013.806105},
  doi          = {10.1080/10910344.2013.806105},
  volume       = {17},
  year         = {2013},
}