The Role of Mullite-based Refractory Chemical Interactions on the Formation of Exogenous Non-metallic Inclusions in Vacuum Treated 0.3% C Steel

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概要

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• Exogenous non metallic inclusions can be introduced into steel from many external sources. Typical examples are the particles of refractory material which detach from their parent material during ladle treatment, teeming and casting operations, remaining entrained in the steel. In the present work, the interactions between Al2O3–SiO2 refractories and steel during casting of ingots has been deeply investigated, permitting to explain the occurrence of ghelenite- and grossite-types inclusions into special grade steels. The experimental analyses were carried out on non-metallic inclusions and ex-service refractory materials by means of Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS) and X-Ray Microdiffraction (μXRD). The results were confirmed by thermodynamical considerations.

• 社団法人 日本鉄鋼協会の論文
• 2007-03-15

著者

• MAPELLI Carlo

  Dipartimento di Meccanica-Sezione Materiali per Applicazioni Meccaniche, Politecnico di Milano

• Mapelli Carlo

  Dipartimento Di Meccanica Politecnico Di Milano

• Roberti Roberto

  Dipartimento Di Ingegneria Meccanica Universita Di Brescia

• CORNACCHIA Giovanna

  Dipartimento di Ingegneria Meccanica, Universita di Brescia

• GELFI Marcello

  Dipartimento di Ingegneria Meccanica, Universita di Brescia

• PADERNI Alberto

  ASO SIDERURGICA s.r.l.

• PANZA S.

  ASO SIDERURGICA s.r.l.

• Gelfi Marcello

  Dipartimento Di Ingegneria Meccanica Universita Di Brescia

• Cornacchia Giovanna

  Dipartimento Di Ingegneria Meccanica Universita Di Brescia

関連論文

• Formation Mechanism of Non-Metallic Inclusions in Different Stainless Steel Grades
• Evaluation of the Energy Developed by a Multipoint Side-wall Burner-Injection System during the Refining Period in a EAF
• Simulation of Oxygen Penetration and Decarburisation in EAF Using Supersonic Injection System
• The Role of Mullite-based Refractory Chemical Interactions on the Formation of Exogenous Non-metallic Inclusions in Vacuum Treated 0.3% C Steel
• Effect of Coiling Temperature on Formability and Mechanical Properties of Mild Low Carbon and HSLA Steels Processed by Thin Slab Casting and Direct Rolling

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