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Effect of subsurface negative segregation induced by M-EMS on componential homogeneity for bloom continuous casting.

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Title: Effect of subsurface negative segregation induced by M-EMS on componential homogeneity for bloom continuous casting.
Authors: Sun, Haibo1 sunmyseven@126.com, Li, Liejun2, Wu, Xuexing3, Liu, Chengbin3
Source: Metallurgical Research & Technology. 2018, Vol. 115 Issue 6, pN.PAG-N.PAG. 10p.
Subjects: Continuous casting, Electromechanical devices, Fluctuations (Physics), Computer simulation, Mixing machinery
Abstract: The subsurface negative segregation behavior and its effect on componential homogeneity of as-cast bloom within a section size of 320 mm × 425 mm under different stirrer currents were investigated with the aid of numerical simulation. To this end, plant trials were conducted based on a curved bloom caster in Shaoguan steel. The results show that the minimum subsurface negative segregation degree is decreased from 0.977 to 0.858 and its corresponding location moves from 16 mm to 11.9 mm distance from strand surface as the stirrer current is increased from 100 A to 600 A. The carbon content fluctuation range of rolled product cross-section first reduces and then increases because of the integrated effects of two factors: melt temperature at the mold exit center decreases (that is, undercooling is increased), whereas the local segregation degree increases with the increase in the stirrer current. As compared to the normal M-EMS parameters (600 A/2.5 Hz), the fluctuation range of carbon content at the cross-section of rolled product is reduced from 0.038 to 0.012 wt.% under the optimized M-EMS parameters of 200 A/2.5 Hz. [ABSTRACT FROM AUTHOR]
Copyright of Metallurgical Research & Technology is the property of EDP Sciences and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Effect of subsurface negative segregation induced by M-EMS on componential homogeneity for bloom continuous casting.
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  Data: <searchLink fieldCode="AR" term="%22Sun%2C+Haibo%22">Sun, Haibo</searchLink><relatesTo>1</relatesTo><i> sunmyseven@126.com</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Liejun%22">Li, Liejun</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Wu%2C+Xuexing%22">Wu, Xuexing</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Liu%2C+Chengbin%22">Liu, Chengbin</searchLink><relatesTo>3</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Metallurgical+Research+%26+Technology%22">Metallurgical Research & Technology</searchLink>. 2018, Vol. 115 Issue 6, pN.PAG-N.PAG. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Continuous+casting%22">Continuous casting</searchLink><br /><searchLink fieldCode="DE" term="%22Electromechanical+devices%22">Electromechanical devices</searchLink><br /><searchLink fieldCode="DE" term="%22Fluctuations+%28Physics%29%22">Fluctuations (Physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br /><searchLink fieldCode="DE" term="%22Mixing+machinery%22">Mixing machinery</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The subsurface negative segregation behavior and its effect on componential homogeneity of as-cast bloom within a section size of 320 mm × 425 mm under different stirrer currents were investigated with the aid of numerical simulation. To this end, plant trials were conducted based on a curved bloom caster in Shaoguan steel. The results show that the minimum subsurface negative segregation degree is decreased from 0.977 to 0.858 and its corresponding location moves from 16 mm to 11.9 mm distance from strand surface as the stirrer current is increased from 100 A to 600 A. The carbon content fluctuation range of rolled product cross-section first reduces and then increases because of the integrated effects of two factors: melt temperature at the mold exit center decreases (that is, undercooling is increased), whereas the local segregation degree increases with the increase in the stirrer current. As compared to the normal M-EMS parameters (600 A/2.5 Hz), the fluctuation range of carbon content at the cross-section of rolled product is reduced from 0.038 to 0.012 wt.% under the optimized M-EMS parameters of 200 A/2.5 Hz. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Metallurgical Research & Technology is the property of EDP Sciences and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1051/metal/2018031
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 10
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Continuous casting
        Type: general
      – SubjectFull: Electromechanical devices
        Type: general
      – SubjectFull: Fluctuations (Physics)
        Type: general
      – SubjectFull: Computer simulation
        Type: general
      – SubjectFull: Mixing machinery
        Type: general
    Titles:
      – TitleFull: Effect of subsurface negative segregation induced by M-EMS on componential homogeneity for bloom continuous casting.
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            NameFull: Sun, Haibo
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            NameFull: Li, Liejun
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            NameFull: Wu, Xuexing
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            NameFull: Liu, Chengbin
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          Dates:
            – D: 01
              M: 11
              Text: 2018
              Type: published
              Y: 2018
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              Value: 115
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              Value: 6
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            – TitleFull: Metallurgical Research & Technology
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