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Influence of Casting Parameters on Hooks and Entrapped Inclusions at the Subsurface of Continuous Casting Slabs

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Abstract

In the current study, several layers beneath the surface of ultra-low carbon steel continuous casting slabs were inspected to investigate non-metallic inclusions, and then faces vertical to the surface of the slab were etched to reveal hooks. The influence of casting parameters on hooks and the entrapment of inclusions by hooks was investigated. Most > 100 μm inclusions were found to be located within 0.5 to 3.5 mm beneath the surface of the slab. Leaf-like hook, double-hook, and truncated hooks were observed, and bubbles and inclusions were found to be located below hooks. With the increase of the cooling water flow rate in copper plates of the continuous casting mold from 5300 to 5940 L/min, the average depth of hooks at the edge of narrow face increased from 1.37 to 1.53 mm, the number of > 20 μm inclusions increased from 1.6 to 2.6 per 100 mm2, and the average size of > 20 μm inclusions increased from 25.1 to 31.8 μm. With the decrease of the casting temperature from 1573 °C (1846 K) to 1549 °C (1822 K), the average depth of hooks at the edge of narrow face increased from 1.24 to 2.01 mm, the number of > 20 μm inclusions increased from 2.0 to 6.0 per 100 mm2, and the average size of > 20 μm inclusions increased from 26.0 to 27.0 μm. Hence, the surface defect of the rolled steel plate could be improved by lowering the depth of hooks at the subsurface of continuous casting slabs.

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References

  1. E. Takeuchi and J. Brimacombe: Metall. Trans. B, 1984, vol. 15, pp. 493-509.

    Article  Google Scholar 

  2. H. Yamamura, Y. Mizukami and K. Misawa: ISIJ Int., 1996, vol. 36, pp. S223-S26.

    Article  Google Scholar 

  3. J. Sengupta and B.G. Thomas: JOM, 2005, vol. 57, pp. 11-34.

    Google Scholar 

  4. E.S. Szekeres: Iron Steel Eng., 1996, vol. 73, pp. 29-37.

    CAS  Google Scholar 

  5. J. Sengupta, B.G. Thomas, H. Shin, G. Lee and S. Kim: Metall. Mater. Trans. A, 2006, vol. 37, pp. 1597-611.

    Article  Google Scholar 

  6. P.E. Lopez, K.C. Mills, P.D. Lee and B. Santillana: Metall. Mater. Trans. B, 2012, vol. 43, pp. 109-22.

    Article  Google Scholar 

  7. H.-J. Shin, G.-G. Lee, S.-M. Kang, S.-H. Kim, W.-Y. Choi, J.-H. Park and B.G. Thomas: Iron Steel Technol., 2005, vol. 2, pp. 56-69.

    CAS  Google Scholar 

  8. J. Bikerman: Physical Surfaces. New York (NY): Academic Press; 1970.

    Google Scholar 

  9. J. Yang, X. Meng, N. Wang and M. Zhu: Metall. Mater. Trans. B, 2017, vol. 48, pp. 1-18.

    Google Scholar 

  10. X. Zhang, W. Chen and L. Zhang: Chin. Foundry, 2017, vol. 14, pp. 416-20.

    Article  Google Scholar 

  11. C. Ojeda, J. Sengupta, B.G. Thomas, J. Barco, and J.L. Arana: AISTech 2006, 2006, vol. 1, pp. 1017-28.

  12. P.E. Ramirez-Lopez, P.D. Lee and K.C. Mills: ISIJ Int., 2010, vol. 50, pp. 425-34.

    Article  CAS  Google Scholar 

  13. J. Sengupta, H.-J. Shin, B. Thomas and S.-H. Kim: Acta Mater., 2006, vol. 54, pp. 1165-73.

    Article  CAS  Google Scholar 

  14. H.-J. Shin, S.-H. Kim, B.G. Thomas, G.-G. Lee, J.-M. Park and J. Sengupta: ISIJ Int., 2006, vol. 46, pp. 1635-44.

    Article  CAS  Google Scholar 

  15. Z. Lei, C. Chen, X. Jin, Y. Zhong and Z. Ren: ISIJ Int., 2013, vol. 53, pp. 830-37.

    Article  CAS  Google Scholar 

  16. T. Miyake, M. Morishita, H. Nakata and M. Kokita: ISIJ Int., 2006, vol. 46, pp. 1817-22.

    Article  CAS  Google Scholar 

  17. L. Zhang: J. Iron Steel Res. Int., 2006, vol. 13, pp. 1-8.

    Google Scholar 

  18. L. Zhang and B.G. Thomas: ISIJ Int., 2003, vol. 43, pp. 271-91.

    Article  CAS  Google Scholar 

  19. Q. Zhang, L. Wang and X. Wang: ISIJ Int., 2006, vol. 46, pp. 1421-26.

    Article  CAS  Google Scholar 

  20. A. Kumar, S.K. Choudhary and S.K. Ajmani: ISIJ Int., 2012, vol. 52, pp. 2305-07.

    Article  CAS  Google Scholar 

  21. T. Emi, H. Nakato, Y. Iida, K. Emoto, R. Tachibana, T. Imai, and H. Bada: Steelmaking Proceedings, Chicago, 1978, pp. 350–60.

  22. Y. Awajiya, J. Kubota, and S. Takeuchi: AISTech-Conference Proceedings, 2005, pp. 65.

  23. X. Deng, L. Li, X. Wang, Y. Ji, C. Ji and G. Zhu: Int. J. Miner. Metall. Mater., 2014, vol. 21, pp. 531-43.

    Article  CAS  Google Scholar 

  24. H. Esaka, Y. Kuroda, K. Shinozuka and M. Tamura: ISIJ Int., 2004, vol. 44, pp. 682-90.

    Article  CAS  Google Scholar 

  25. G.-G. Lee, H.-J. Shin, S.-H. Kim, S.-K. Kim, W.-Y. Choi and B.G. Thomas: Ironmaking Steelmaking, 2009, vol. 36, pp. 39-49.

    Article  CAS  Google Scholar 

  26. X. Zhang, L. Zhang, H. Wang, S. Wang, Q. Wang, W. Yang: Chin. J. Eng., 2017, vol. 39, pp. 251-58.

    CAS  Google Scholar 

  27. Y. Ren, Y. Wang, S. Li, L. Zhang, X. Zuo, S.N. Lekakh and K. Peaslee: Metall. Mater. Trans. B, 2014, vol. 45, pp. 1291-1303.

    Article  CAS  Google Scholar 

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Acknowledgments

The authors are grateful for support from the National Natural Science Foundation of China (Grant Nos. 51725402, 51504020, and 51704018), Beijing Science & Technology Program (No. Z171100002217063), the Fundamental Research Funds for the Central Universites (Grant Nos. FRF-TP-15-001C2, FRF-TP-15-067A1, FRF-TP-17-039A1 and FRF-BD-17-010A), Beijing Key Laboratory of Green Recycling and Extraction of Metals (GREM) and the High Quality steel Consortium (HQSC) and Green Process Metallurgy and Modeling (GPM2) at the School of Metallurgical and Ecological Engineering at University of Science and Technology Beijing (USTB), China.

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  1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing (USTB), Beijing, 100083, China

    Xubin Zhang, Ying Ren & Lifeng Zhang

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  1. Xubin Zhang
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  2. Ying Ren
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  3. Lifeng Zhang
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Correspondence to Ying Ren or Lifeng Zhang.

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Manuscript submitted February 24, 2018.

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Zhang, X., Ren, Y. & Zhang, L. Influence of Casting Parameters on Hooks and Entrapped Inclusions at the Subsurface of Continuous Casting Slabs. Metall Mater Trans A 49, 5469–5477 (2018). https://doi.org/10.1007/s11661-018-4860-4

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  • DOI: https://doi.org/10.1007/s11661-018-4860-4

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