Design of Swirling Flow Submerged Entry Nozzles for Optimal Head Consumption between Tundish and Mold
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概要
- 論文の詳細を見る
A technology of swirling flow formation in a submerged entry nozzle is proposed as an effective measure for controlling the flow pattern in a continuous casting mold. As a result of a joint study between Nippon Institute of Technology, Osaka University, Kyushu Refractories, and Sumitomo Metal Industries, swirling flow submerged entry nozzles with a swirl blade for steel slab casting have been developed to improve the productivity of the process and the surface quality of slabs and coils.The swirl blade in the submerged entry nozzle forms the swirling flow expending the potential energy between the tundish and the mold. Thus, the swirl blade and the internal shape of the submerged entry nozzle, which determine the swirling flow rate, should be designed considering the flow rate in the nozzle and the head between the tundish and the mold of the applied casting machine.From full-scale water model experiments, we obtained an empirical equation to estimate the required head between the tundish and the mold from the flow rate, the internal shape of the nozzle, and the specification of the swirl blade. Then, we investigated energy efficiency to create the swirling flow, using an empirical equation from the results of a water model experiment and a numerical analysis of the swirling flow in the nozzle.The obtained empirical equation is valuable to design swirling flow submerged entry nozzles adopted for various casting conditions.
- 社団法人 日本鉄鋼協会の論文
- 2007-10-15
著者
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Jönsson Pär
Division of Applied Process Metallurgy, Royal Institute of Technology
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TSUKAGUCHI Yuichi
Corporate R&D Labs., Sumitomo Metal Industries, Ltd.
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Hara Shigeta
Fukui Univ. Technol. Fukui Jpn
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TANAKA Toshihiro
Graduate School of Materials Science and Processing, Faculty of Engineering, Osaka University
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YOKOYA Shinichiro
Division of Applied Process Metallurgy, KTH
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Jonsson Par
Division Of Applied Process Metallurgy Kth
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Jonsson Par
Division Of Applied Process Metallurgy Department Of Materials Science And Engineering Royal Institu
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NAKAMURA Osamu
Corporate Research and Development Laboratory, Toa Nenryo Kogyo K.K.
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Yokoya S
Division Of Applied Process Metallurgy Kth
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HARA Shigeta
Formerly Graduate School of Engineering, Osaka University
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Hara Sigeta
Dept. Of Materials Science And Processing Osaka University
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Hara Shigeta
Formerly Graduate School Of Engineering Osaka University
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Yokoya Shinichiro
Division Of Applied Process Metallurgy
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Tanaka Toshihiro
Graduate School Of Engineering Osaka University
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Tsukaguchi Y
Corporate R&d Labs. Sumitomo Metal Industries Ltd.
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Tsukaguchi Yuichi
Corporate R&d Labs. Sumitomo Metal Industries Ltd.
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Nakamura Osamu
Corporate R&d Labs. Sumitomo Metal Industries Ltd.
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Tanaka Toshihiro
Graduate School Of Eng. Osaka Univ.
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Tukaguchi Yuichi
Corporate R&D Labs., Sumitomo Metal Industries, Ltd.
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Jönson Pär
Division of Applied Process Metallurgy, KTH
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Tukaguchi Yuichi
Corporate R&D Labs., Sumitomo Metal Industries, Ltd.
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Tanaka Toshihiro
Graduate School of Engineering, Osaka University
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