Effect of stopper-rod misalignment on asymmetric flow and vortex formation in steel slab casting

Seong Mook Cho, Go Gi Lee, Seon Hyo Kim, Rajneesh Chaudhary, Oh Duck Kwon, Brian G. Thomas

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

Abstract

Vortices forming near the slag-steel interface in the mold can entrap inclusions and cause defects in continuous casting of steel slabs. Lab experiments employing a 1/3rd scale water model were performed to quantify the effects of stopper rod asymmetry on vortex formation. Three stopper-rod placements (aligned, front-misaligned and left-misaligned) were considered. Vortex formation was visualized with a high speed camera by placing sesame-seed tracer on the surface, which enables counting the number and detecting the location of vortices with time. Impeller flow probes were adopted to measure velocity profiles near the surface. Misaligning the stopper-rod placement induces asymmetric flow, resulting in asymmetric surface velocity, velocity variations, and turbulent kinetic energy. These factors influence vortex frequency and location among four zones near the SEN. Most vortices form at the left regions beside the SEN with a left-misaligned stopper-rod. Vortices form more preferentially at outside regions with a front-misaligned stopper-rod.

Original languageEnglish (US)
Title of host publicationJim Evans Honorary Symposium - Held During TMS 2010 Annual Meeting and Exhibition
Pages71-77
Number of pages7
StatePublished - May 28 2010
EventJim Evans Honorary Symposium - TMS 2010 Annual Meeting and Exhibition - Seattle, WA, United States
Duration: Feb 14 2010Feb 18 2010

Publication series

NameTMS Annual Meeting

Other

OtherJim Evans Honorary Symposium - TMS 2010 Annual Meeting and Exhibition
CountryUnited States
CitySeattle, WA
Period2/14/102/18/10

Keywords

  • Continuous casting
  • Entrapment
  • Mold
  • Mold powder
  • Water model

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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