Analysis of the Crystallization of Mold Flux for Continuous Casting of Steel
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概要
- 論文の詳細を見る
In continuous casting of steel, mold fluxes are used to prevent surface defects, such as longitudinal cracks. The crystallization of mold flux promotes mild cooling of the steel shell, but crystallization behavior has been still uncertain. Therefore, this study has been carried out to analyze the crystallization processes of mold flux. Mold flux used in this study has high tendency for crystallization. Quenched specimens were heat-treated in various conditions and characterized. Glassy specimen heat-treated in the electric furnace over 550°C for 180 min crystallized. These crystalline were confirmed to be cuspidine by XRD analysis. The number of grains decreased and the average grain size increased with rise of temperature of heat treatment. The growth velocity also increased with rise of temperature.In-situ observation by the laser microscope revealed that the glassy specimen crystallized in a moment over 600°C and the surface of the specimen turned to be rough. This may lead to mild cooling in the mold.
- 社団法人 日本鉄鋼協会の論文
- 2008-03-15
著者
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Esaka Hisao
Department Of Materials Science & Engineering National Defense Academy
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Shinozuka Kei
Department Of Materials Science And Engineering National Defense Academy
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Esaka H
Department Of Materials Science And Engineering National Defense Academy
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TAMURA Manabu
Department of Otolaryngology and Sensory Organ Surgery (E8), Osaka University
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Esaka H
National Defense Academy Materials Science And Engineering
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Tamura Manabu
Department Of Materials Science And Engineering National Defense Academy
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Tamura M
Department Of Materials Science And Engineering National Defense Academy
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MIZUNO Hidenori
Department of Materials Science and Engineering, National Defense Academy
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Mizuno Hidenori
Department Of Materials Science And Engineering National Defense Academy
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Shinozuka Kei
Department of Materials Science and Engineering, National Defense Academy
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