Original scientific paper

Composition design and physical properties prediction of mold flux for continuous casting of high Mn–HIGH Al steel

J. Y. Hu ; School of Materials and Metallurgy, School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, 114051, Liaoning, China; State Key Laboratory of Marine Equipment and Applications, Anshan 114009, Liaoning, China
X. W. Liao ; State Key Laboratory of Marine Equipment and Applications, Anshan 114009, Liaoning, China; Ansteel Iron and Steel Research Institute, Anshan 114009, Liaoning, China
L. H. Feng ; School of Materials and Metallurgy, School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, 114051, Liaoning, China; State Key Laboratory of Marine Equipment and Applications, Anshan 114009, Liaoning, China
W. Kang ; State Key Laboratory of Marine Equipment and Applications, Anshan 114009, Liaoning, China; Ansteel Iron and Steel Research Institute, Anshan 114009, Liaoning, China
Y. Liu ; School of Materials and Metallurgy, School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, 114051, Liaoning, China; State Key Laboratory of Marine Equipment and Applications, Anshan 114009, Liaoning, China

Abstract

The deterioration of CaO-SiO₂ based mold flux caused by the reaction of steel -slag interface is a bottleneck restricting the high Mn-Al steel continuous casting production efficiently. Therefore, the development of low-reactivity mold flux has become a research hotspot. In this paper, the scheme of high Al₂O₃ and low SiO₂ was adopted to suppress or reduce the occurrence of steel-slag reaction. Drawing binary phase diagram of mold flux based on the CaO–Al₂O₃ composition, the influence of different solvents on the melting characteristics of the mold flux were investigated and the reasonable mass ratio of CaO/Al₂O₃and the content of SiO₂, SrO, MgO, Na₂O and B₂O₃ were determined. According to the viscosity and the melting temperature model calculation, the physical property is beneficial for the composition design of low-reactivity mold flux.

Keywords

high Mn–high Al steel; continuous casting; viscosity; melting temperature; physical property

Hrčak ID:

262408

URI

https://hrcak.srce.hr/262408

Publication date:

3.1.2022.

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