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ISIJI47_10_1436
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論文情報
タイトル
Design of Swirling Flow Submerged Entry Nozzles for Optimal Head Consumption between Tundish and Mold
著者
Tukaguchi, Yuichi
Tukaguchi, Yuichi
Nakamura, Osamu
Nakamura, Osamu
Jönson, Pär
Jönson, Pär
Yokoya, Shinichiro
Yokoya, Shinichiro
Tanaka, Toshihiro
Tanaka, Toshihiro
Hara, Shigeta
Hara, Shigeta
キーワード等
continuous casting
submerged entry nozzle
swirling flow
swirl blade
potential energy
head
water model
抄録
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.
公開者
日本鉄鋼協会
公開者の別表記
The Iron and Steel Institute of Japan
公開者 (ヨミ)
ニホン テッコウ キョウカイ
掲載誌名
ISIJ International
巻
47
号
10
開始ページ
1436
終了ページ
1443
刊行年月
2007
ISSN
09151559
NCID
AA10680712
DOI (出版社版)
info:doi/10.2355/isijinternational.47.1436
URL
http://hdl.handle.net/11094/26406
権利情報
© 2007 ISIJ
言語
英語
カテゴリ
学術雑誌論文 Journal Article
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著者版フラグ
publisher
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学術雑誌論文
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text
DCTERMS.bibliographicCitation
ISIJ International.47(10) P.1436-P.1443
DC.title
Design of Swirling Flow Submerged Entry Nozzles for Optimal Head Consumption between Tundish and Mold
DC.creator
Tukaguchi, Yuichi
Nakamura, Osamu
Jönson, Pär
Yokoya, Shinichiro
Tanaka, Toshihiro
Hara, Shigeta
DC.publisher
日本鉄鋼協会
DC.language" scheme="DCTERMS.RFC1766
英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF
2007
DC.identifier
info:doi/10.2355/isijinternational.47.1436
DC.identifier" scheme="DCTERMS.URI
http://hdl.handle.net/11094/26406
DC.subject
continuous casting
submerged entry nozzle
swirling flow
swirl blade
potential energy
head
water model
DCTERMS.abstract
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.
DC.rights
© 2007 ISIJ
citation_title
Design of Swirling Flow Submerged Entry Nozzles for Optimal Head Consumption between Tundish and Mold
citation_author
Tukaguchi, Yuichi
Nakamura, Osamu
Jönson, Pär
Yokoya, Shinichiro
Tanaka, Toshihiro
Hara, Shigeta
citation_publisher
日本鉄鋼協会
citation_language
英語
citation_date
2007
citation_journal_title
ISIJ International
citation_volume
47
citation_issue
10
citation_firstpage
1436
citation_lastpage
1443
citation_issn
09151559
citation_doi
info:doi/10.2355/isijinternational.47.1436
citation_public_url
http://hdl.handle.net/11094/26406
citation_keywords
continuous casting
submerged entry nozzle
swirling flow
swirl blade
potential energy
head
water model