Simulation of gas gap formation between substrate surface and molten steel during initial solidification

Masafumi Miyazaki, Hirofumi Miyahara

Research output: Contribution to journalArticle

Abstract

Synopsis : In order to evaluate the motion of molten steel just before its solidification, contact conditions between the molten steel and the mold surface at a time when the molten steel contacts the mold surface were analyzed. Conditions of gas-gap formation on the interface between the molten steel and the mold were simulated by preparing a simplified dynamic model in which physical-property values, such as, depths of unevenness of the mold surface, gas absorptions into the molten steel, heat flux, and various other conditions were systematically varied. The time needed for the molten steel to penetrate to the bottom of a depression 100 ,∑m deep in the mold surface was estimated to be 0.03 s. It was also estimated that the molten-steel penetration time is significantly influenced by the depth of depressions in the mold surface, gas absorptions into the molten steel, and heat fluxes, whereas the effects of viscosity and surface tension of the molten steel are insignificant.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume94
Issue number3
Publication statusPublished - Dec 1 2008

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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