Metallurgist

, Volume 60, Issue 9–10, pp 916–922 | Cite as

Automatic Control of Slag Line for Submerged Entry Nozzle (SEN)

  • Jian Zhang
  • Cheng-Qian Zhang
  • Lin Wang
  • Ming-Rong Han
  • Weng-Sing Hwang
Article
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This paper describes an automatic control method for the slag line for SEN during continuous casting of steel, which is an improved even erosion method based on adjusting the immersion depth of SEN with appropriate time intervals. It aims to extend the service life of SEN. This automatic control method has been applied to an actual billet continuous casting machine, and the results of field trials show that the average service life of SEN improved significantly. In addition, the average erosion rate decreased from 0.053 mm/min to about 0.04 mm/min. The effects of the immersion depth of SEN on fluctuation of the molten steel surface and power consumption are discussed. The results indicate that the fluctuation of the molten steel surface and power consumption both decreased as the immersion depth of SEN increased.

Keywords

continuous casting SEN service life slag line automatic control 
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Notes

Acknowledgments

The work was financially supported by the National Natural Science Foundation of China (NSFC, project No. 61303208) and The Aim for the Top University Project of National Cheng Kung University (project No. D103-23014).

References

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    T. Yingnakorna and S. Khumkoaa, “Corrosion behaviour of submerged entry nozzle (SEN) during continuous casting of steel,” in: Int. Conf. on Multidisciplinary Innovation for Sustainability and Growth, MISG-2014, Kuala Lumpur, Malaysia (2014), pp. 78–84.Google Scholar
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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • Jian Zhang
    • 1
  • Cheng-Qian Zhang
    • 2
  • Lin Wang
    • 3
  • Ming-Rong Han
    • 4
  • Weng-Sing Hwang
    • 1
  1. 1.Department of Materials Science and Engineering & Research Center for Energy Technology and StrategyNational Cheng Kung UniversityTainanTaiwan
  2. 2.School of Electronic Information EngineeringTianjin UniversityTianjinChina
  3. 3.Chongqing Iron & Steel Co., Ltd.ChongqingChina
  4. 4.School of Metallurgy and Materials EngineeringChong Qing University of Science & TechnologyChongqingChina

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