Fluid Flow Behavior in Submerged Entry Nozzle of Continuous Casting
スポンサーリンク
概要
- 論文の詳細を見る
A fluid flow control of molten steel in continuous casting mold directly leads to surface and internal quality of slab and product. However, few studies have looked at fluid flow in submerged entry nozzle even when it is a source of flow in the mold. In this study, fluid flow in submerged entry nozzle is in-situ observed through transparent immersion nozzle by a fusible alloy model and a steel flow model. Subsequently, argon gas extract from mold meniscus is also measured at commercial caster.In the fusible alloy model experiment, both potential flow and plug flow emerged depending on argon flow rate, metal flow rate and nozzle diameter. Decreasing argon flow rate, increasing metal flow rate and reducing nozzle diameter leads to a rise of meniscus height in nozzle.Molten steel flow was observed through transparent silica glass nozzle. Both potential-flow and plug-flow also emerged depending on argon flow rate.According to measurement of net argon flow rate through mold meniscus, about 20% of argon gas injected from upper sliding plate is brought into nozzle at molten steel system.Taking these experimental results into consideration, it is concluded that in conventional slab caster, submerged entry nozzle must be filled with molten steel and steel flow must be like plug-flow during usual operation.
- 社団法人 日本鉄鋼協会の論文
- 2007-06-15
著者
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Kawamoto Masayuki
Corporate R&d Labs. Sumitomo Metal Industries Ltd.
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Kawamoto Masayuki
Corporate Research And Development Laboratories Sumitomo Metal Industries Ltd.
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Hara Masashi
Corporate Research & Development Laboratories Sumitomo Metal Ind. Ltd.
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KATO Toru
Corporate Research and Development Laboratories, Sumitomo Metal Industries, Ltd.
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MUTO Akifumi
Kashima Steel Works, Sumitomo Metal Industries, Ltd.
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HIRAKI Sei
Corporate Research and Development Laboratories, Sumitomo Metal Industries, Ltd.
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Hara Masashi
Corporate Research And Development Laboratories Sumitomo Metal Industries Ltd.
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Hiraki Sei
Corporate Research And Development Laboratories Sumitomo Metal Industries Ltd.
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Hiraki Sei
Corporate Research & Development Labs. Sumitomo Metal Industries Ltd.
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Muto Akifumi
Kashima Steel Works Sumitomo Metal Industries Ltd.
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Kato Toru
Corporate Research And Development Laboratories Sumitomo Metal Industries Ltd.
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