The development of a cobalt-free exhaust valve seat insert

Hiroki Fujitsuka, Hideaki Kawata, Mitsushi Oyanagi, Tomonori Miyazawa, Akira Fujiki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Generally, cobalt-contained sintered materials have mainly been applied for exhaust valve seat inserts (VSI). However, there is a trend to restrict the use of cobalt as well as lead environmental law, and cobalt is expensive. To solve these problems, a new exhaust VSI on the assumption of being cobalt and lead free, applicable for conventional engines, having good machinability, and with a reduced cost was developed. The new exhaust VSI is a material dispersed with two types of hard particles, Fe-Cr-C and Fe-Mo-Si, in the matrix of an Fe-3.5mass%Mo at the ratio of 15 mass % and 10 mass % respectively.

Original languageEnglish
Title of host publicationSAE Technical Papers
DOIs
Publication statusPublished - 2004
Externally publishedYes
Event2004 SAE World Congress - Detroit, MI
Duration: 2004 Mar 82004 Mar 11

Other

Other2004 SAE World Congress
CityDetroit, MI
Period04/3/804/3/11

Fingerprint

Die casting inserts
Cobalt
Machinability
Engines
Costs

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

Cite this

Fujitsuka, H., Kawata, H., Oyanagi, M., Miyazawa, T., & Fujiki, A. (2004). The development of a cobalt-free exhaust valve seat insert. In SAE Technical Papers https://doi.org/10.4271/2004-01-0502

The development of a cobalt-free exhaust valve seat insert. / Fujitsuka, Hiroki; Kawata, Hideaki; Oyanagi, Mitsushi; Miyazawa, Tomonori; Fujiki, Akira.

SAE Technical Papers. 2004.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fujitsuka, H, Kawata, H, Oyanagi, M, Miyazawa, T & Fujiki, A 2004, The development of a cobalt-free exhaust valve seat insert. in SAE Technical Papers. 2004 SAE World Congress, Detroit, MI, 04/3/8. https://doi.org/10.4271/2004-01-0502
Fujitsuka H, Kawata H, Oyanagi M, Miyazawa T, Fujiki A. The development of a cobalt-free exhaust valve seat insert. In SAE Technical Papers. 2004 https://doi.org/10.4271/2004-01-0502
Fujitsuka, Hiroki ; Kawata, Hideaki ; Oyanagi, Mitsushi ; Miyazawa, Tomonori ; Fujiki, Akira. / The development of a cobalt-free exhaust valve seat insert. SAE Technical Papers. 2004.
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