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The green, cycle, and sustainable development of the steelSteel industry represents the future direction. The continuous increase in scrap steelScrap steel production capacity has led to an increase in the content of impurity elementsImpurity element in molten steelSteel. Twin-roll strip casting can effectively suppress the segregation of impurity elementsImpurity element. Therefore, it is of great significance to study the effect of different impurity elementsImpurity element on the twin-roll strip casting. In this study, elements Al, O, N, C, Cu, and P were used as variables, and the sub-rapid droplet solidificationSolidification technique was employed to simulate the solidificationSolidification processProcess of twin-roll strip casting. The effects of impurity elementsImpurity element on the deposition film, heat fluxHeat flux, and wettability were investigated. The mechanism of deposition film was elucidated through SEMScanning Electron Microscopy (SEM)-EDS analysis and thermodynamicThermodynamic calculations, indicating that the deposited filmDeposited film is generated by the volatilization and oxidation of the Si, Mn, Al, and Fe elements. Furthermore, the Al, N, and O impurity elementsImpurity element slightly reduce the heat transfer, while the C and P elements show a promotion. And, the C, P, Cu elements can increase the wettability between the molten steelSteel and deposited filmDeposited film by lowering the surface tension of the steelSteel and inhibiting the formation of the coarse oxide of the deposited filmDeposited film.

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Effect of Impurity Elements on the Deposition Film, Heat Transfer and Wettability in Thin Strip Casting Under High Scrap Steel Ratio

  • 会议论文

  • 发表日期：

    2026年

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  • Rensheng Li,
  • Yutian Liang,
  • Wanlin Wang,
  • Mengchuan Li,
  • Boquan Xie

摘要

The green, cycle, and sustainable development of the steelSteel industry represents the future direction. The continuous increase in scrap steelScrap steel production capacity has led to an increase in the content of impurity elementsImpurity element in molten steelSteel. Twin-roll strip casting can effectively suppress the segregation of impurity elementsImpurity element. Therefore, it is of great significance to study the effect of different impurity elementsImpurity element on the twin-roll strip casting. In this study, elements Al, O, N, C, Cu, and P were used as variables, and the sub-rapid droplet solidificationSolidification technique was employed to simulate the solidificationSolidification processProcess of twin-roll strip casting. The effects of impurity elementsImpurity element on the deposition film, heat fluxHeat flux, and wettability were investigated. The mechanism of deposition film was elucidated through SEMScanning Electron Microscopy (SEM)-EDS analysis and thermodynamicThermodynamic calculations, indicating that the deposited filmDeposited film is generated by the volatilization and oxidation of the Si, Mn, Al, and Fe elements. Furthermore, the Al, N, and O impurity elementsImpurity element slightly reduce the heat transfer, while the C and P elements show a promotion. And, the C, P, Cu elements can increase the wettability between the molten steelSteel and deposited filmDeposited film by lowering the surface tension of the steelSteel and inhibiting the formation of the coarse oxide of the deposited filmDeposited film.