Insights into clogging behavior of Al2O3-C and ZrO2-C submerged entry nozzle during continuous casting of ultra-low carbon steel

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-02-12 DOI:10.1016/j.corsci.2025.112777

Kaiwang Chen , Lei Yuan , Qiang Gu , Guoqi Liu , Jingkun Yu , Hongxia Li

引用次数: 0

Abstract

The clogging behavior of a new ZrO₂-C submerged entry nozzle (SEN) in the industrial production of ultra-low carbon steel was studied. The results revealed that, compared to the Al₂O₃-C SEN, the clogging thickness at the ZrO₂-C SEN outlet was reduced by over 20 % to the formation of a dense protective layer composed of CaO-Al₂O₃-SiO₂ at the interface near the molten steel. Additionally, the corrosion layer formed within the ZrO₂-C SEN effectively prevented decarburization and diffusion of CO. The use of the ZrO₂-C SEN improved the qualification rate of the liquid level fluctuation and the defect rate of the slab was reduced by approximately 17 %. The related reactions occurring inside the nozzle were simulated and compared with the experimental results in detail.

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.