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<p>In the continuous casting of steel billets, the initial solidification at the meniscus is the critical determinant of surface quality. The shell characteristics and geometry are intrinsic features of the process, resulting from the interaction between mould process parameters and the solidifying meniscus. However, defects and irregularities significantly alter the local heat transfer coefficient in the mould and act as stress raisers, increasing the susceptibility to transverse cracking. This article investigates the direct correlation between the performance of different mould level control systems and the morphological characteristics of billet surface.</p><p>A&#xa0;comprehensive experimental campaign was conducted on a&#xa0;multi-strand billet caster. The trials involved the application of distinct mould level control strategies, characterized by varying response times and damping factors, to induce controlled variations in meniscus stability. The resulting oscillation profiles were analyzed to quantify their impact on the overall quality. To ensure robust data validation, macro-morphological analysis was conducted on billet surface, collected during the testing stages.</p><p>This article provides valuable insights for optimizing the casting process, identifying the most effective control strategies and measurement techniques to ensure consistent billet surface quality.</p>

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Influence of Mould Level Control Dynamics on Billet Surface Quality: a Quantitative Analysis

  • 期刊论文

  • 发表日期：

    2026年5月27日

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  • Cosmo Di Cecca,
  • Federica Di Giovanni,
  • Giulia Buratti,
  • Gianpaolo Foglio,
  • Mattia Tellaroli,
  • Alessandro Milan,
  • Andrea Landini,
  • Lorenzo Angelini,
  • Piero Frittella,
  • Francesco Fredi

摘要

In the continuous casting of steel billets, the initial solidification at the meniscus is the critical determinant of surface quality. The shell characteristics and geometry are intrinsic features of the process, resulting from the interaction between mould process parameters and the solidifying meniscus. However, defects and irregularities significantly alter the local heat transfer coefficient in the mould and act as stress raisers, increasing the susceptibility to transverse cracking. This article investigates the direct correlation between the performance of different mould level control systems and the morphological characteristics of billet surface.

A comprehensive experimental campaign was conducted on a multi-strand billet caster. The trials involved the application of distinct mould level control strategies, characterized by varying response times and damping factors, to induce controlled variations in meniscus stability. The resulting oscillation profiles were analyzed to quantify their impact on the overall quality. To ensure robust data validation, macro-morphological analysis was conducted on billet surface, collected during the testing stages.

This article provides valuable insights for optimizing the casting process, identifying the most effective control strategies and measurement techniques to ensure consistent billet surface quality.