Hostname: page-component-cd9895bd7-gbm5v Total loading time: 0 Render date: 2024-12-27T06:55:52.159Z Has data issue: false hasContentIssue false
  • English
  • Français

Improvement of inclusion cleanness in bearing steel and Catreatedsteel

Published online by Cambridge University Press:  17 January 2008

F. Ruby-Meyer ,
E. Hénault ,
M. Rocher-Bakour  and
F. Merchi
Get access

Abstract

Two complementary techniques are mainly used for the detectionand characterisation of the inclusions populations present in thesteel bars in a large range of sizes: from 1 μm to 1 mm: the automaticscanning electron microscope associated with image analysisand the 80 MHz ultrasonic inspection. The emphasis has been puton the composition of the inclusions whose size is above the criticalsize (10 - 20 μm) for long life fatigue. The mechanism of formation ofthese harmful inclusions is determined through the process with thehelp of thermodynamics models. This approach makes it possible toimprove the process: avoiding slag entrapment upon casting of bearingsteels, adjusting closely the Ca addition to calcium treatedsteels.


Type
Research Article
Information
Metallurgical Research & Technology , Volume 104 , Issue 12: SteelmakingCold rollingUse of steel , December 2007 , pp. 585 - 590
Copyright
© La Revue de Métallurgie, 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)