Design of Swirling Flow Submerged Entry Nozzles for Optimal Head Consumption between Tundish and Mold

Tukaguchi, Yuichi; Nakamura, Osamu; Jönson, Pär; Yokoya, Shinichiro; Tanaka, Toshihiro; Hara, Shigeta

doi:https://doi.org/10.2355/isijinternational.47.1436

Design of Swirling Flow Submerged Entry Nozzles for Optimal Head Consumption between Tundish and Mold

Tukaguchi, Yuichi; Nakamura, Osamu; Jönson, Pär et al.

ISIJ International, 2007, 47(10), 1436-1443

アクセス数:510件（2025-07-05 08:26 集計）

固定URL: https://hdl.handle.net/11094/26406

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タイトル	Design of Swirling Flow Submerged Entry Nozzles for Optimal Head Consumption between Tundish and Mold
著者	著者名 Tukaguchi, Yuichi
	NRID 1000000400466 1000000400466 著者名 Nakamura, Osamu
	著者名 Jönson, Pär
	NRID 1000080049692 1000080049692 著者名 Yokoya, Shinichiro
	NRID 1000010179773 1000010179773 researchmap permalink read0013978 read0013978 著者名 Tanaka, Toshihiro
	NRID 1000090029116 1000090029116 著者名 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.
出版者	日本鉄鋼協会
	The Iron and Steel Institute of Japan
	ニホン　テッコウ　キョウカイ
収録物名	ISIJ International
巻(号)	47(10)
ページ	1436-1443
刊行年月	2007
言語	英語
ハンドルURL	https://hdl.handle.net/11094/26406
PISSN	09151559
NCID	AA10680712
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.2355/isijinternational.47.1436
アクセス権	open access
権利情報	© 2007 ISIJ
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	ISIJ International. 2007, 47(10), p. 1436-1443
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
	The Iron and Steel Institute of Japan
	ニホン　テッコウ　キョウカイ
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2007
DC.identifier	https://doi.org/10.2355/isijinternational.47.1436
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
DC.format	26406
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_doi	https://doi.org/10.2355/isijinternational.47.1436
citation_public_url	https://hdl.handle.net/11094/26406

Design of Swirling Flow Submerged Entry Nozzles for Optimal Head Consumption between Tundish and Mold

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