Magnetohydrodynamics applied to materials processing

Auteur(s) : Moreau, René ; Fautrelle, Yves ; Roland, Ernst

• Notice du document

  Titre / Title

  Magnetohydrodynamics applied to materials processing

  Auteur(s) / Author(s)

  Moreau René, auteur principal ; Fautrelle Yves, auteur principal ; Roland Ernst, auteur principal

  Type de document

  Article

  Collection

  International Journal for Industry, Research and Application , N° vol. 100, p. 1389-1398

  Publication

  Munich: Carl Hanser Verlag, 2009

  Description technique / Physical description

  10 p. : ill.; 30 cm.

• Langue / Language

  Anglais

• Description

  • Résumé / Abstract

    Indiqué en début d'article :
    "In the processing of liquid materials various operations are performed, e.g., alloying, homogenisation of the composition, refining or inclusion removal. As was realised early on by Charles Crussard, electromagnetic effects can be used to process electrically conducting materials without any contact. When alternating magnetic fields are used, the material is directly heated and melted thanks to the induced electric currents. The induced electromagnetic forces are capable of shaping the free surface, levitating a liquid blob and stirring the liquid bulk on its surface. The latter principle may be applied to electrically conducting liquids such as metallic alloys, but also to poorly conducting materials such as oxides, glasses or plasmas. Those effects are used in many processes such as induction furnaces for liquid metals or glasses, refining ladles, electromagnetic levitation, continuous casting of aluminium or steel. In this paper, typical effects based on the use of electromagnetic systems are reviewed, as well as the corresponding applications."
    
    Keywords : Magnetic field ; Induction ; Electromagnetic processing of materials (EPM)