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Effect of ageing on machining performance of grey cast iron and its compensation by cutting speed management

Bushlya, Volodymyr LU ; Lindvall, Rebecka LU ; Lenrick, Filip LU orcid ; Magnusson Åberg, Lena ; M'Saoubi, Rachid LU and Ståhl, Jan Eric LU (2024) In CIRP Annals
Abstract

Grey cast iron is known for its poor machinability directly after casting, but attains excellent machining performance after ageing. The present work explores the impact of cutting speed on the performance of pcBN machining for non-aged material. Findings suggest that tool wear can be minimized by identifying an optimal cutting speed that supports the formation of a stable Al2O3 and MnS build-up layer (BUL). Insufficient BUL protection accelerates pcBN wear by diffusion, while at very high speeds protective Al2O3 is replaced by weaker (Fe,Mn)2SiO4 and (Fe,Mn)O, and oxidation accelerates tool wear. The higher mechanical properties of aged GCI facilitate generation of high... (More)

Grey cast iron is known for its poor machinability directly after casting, but attains excellent machining performance after ageing. The present work explores the impact of cutting speed on the performance of pcBN machining for non-aged material. Findings suggest that tool wear can be minimized by identifying an optimal cutting speed that supports the formation of a stable Al2O3 and MnS build-up layer (BUL). Insufficient BUL protection accelerates pcBN wear by diffusion, while at very high speeds protective Al2O3 is replaced by weaker (Fe,Mn)2SiO4 and (Fe,Mn)O, and oxidation accelerates tool wear. The higher mechanical properties of aged GCI facilitate generation of high enough temperatures for stable deposition of Al2O3 BUL.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
in press
subject
keywords
Grey cast iron, Machinability, Wear
in
CIRP Annals
pages
4 pages
publisher
Elsevier
external identifiers
  • scopus:85192051073
ISSN
0007-8506
DOI
10.1016/j.cirp.2024.04.061
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2024 The Author(s)
id
b3d71e13-5cfa-43a4-afa7-920da9a3a7bd
date added to LUP
2024-05-13 11:28:14
date last changed
2024-05-13 16:07:56
@article{b3d71e13-5cfa-43a4-afa7-920da9a3a7bd,
  abstract     = {{<p>Grey cast iron is known for its poor machinability directly after casting, but attains excellent machining performance after ageing. The present work explores the impact of cutting speed on the performance of pcBN machining for non-aged material. Findings suggest that tool wear can be minimized by identifying an optimal cutting speed that supports the formation of a stable Al<sub>2</sub>O<sub>3</sub> and MnS build-up layer (BUL). Insufficient BUL protection accelerates pcBN wear by diffusion, while at very high speeds protective Al<sub>2</sub>O<sub>3</sub> is replaced by weaker (Fe,Mn)<sub>2</sub>SiO<sub>4</sub> and (Fe,Mn)O, and oxidation accelerates tool wear. The higher mechanical properties of aged GCI facilitate generation of high enough temperatures for stable deposition of Al<sub>2</sub>O<sub>3</sub> BUL.</p>}},
  author       = {{Bushlya, Volodymyr and Lindvall, Rebecka and Lenrick, Filip and Magnusson Åberg, Lena and M'Saoubi, Rachid and Ståhl, Jan Eric}},
  issn         = {{0007-8506}},
  keywords     = {{Grey cast iron; Machinability; Wear}},
  language     = {{eng}},
  month        = {{05}},
  publisher    = {{Elsevier}},
  series       = {{CIRP Annals}},
  title        = {{Effect of ageing on machining performance of grey cast iron and its compensation by cutting speed management}},
  url          = {{http://dx.doi.org/10.1016/j.cirp.2024.04.061}},
  doi          = {{10.1016/j.cirp.2024.04.061}},
  year         = {{2024}},
}