丸ビレット連続鋳造用旋回流浸漬ノズル

塚口, 友一; ツカグチ, ユウイチ; Tsukaguchi, Yuichi; 林, 浩史; ハヤシ, ヒロシ; Hayashi, Hiroshi; 横谷, 真一郎; ヨコヤ, シンイチロウ; Yokoya, Shinichiro; 田中, 敏宏; タナカ, トシヒロ; Tanaka,Toshihiro; 原, 茂太; ハラ, シゲタ; Hara, Shigeta

doi:https://doi.org/10.2355/tetsutohagane.93.575

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論文情報

タイトル	丸ビレット連続鋳造用旋回流浸漬ノズル
	Swirling Flow Submerged Entry Nozzle for Round Billet Casting
	マル　ビレット　レンゾク　チュウゾウヨウ　センカイリュウ　シンセキ　ノズル
著者	著者名塚口, 友一ツカグチ, ユウイチ Tsukaguchi, Yuichi
	著者名林, 浩史ハヤシ, ヒロシ Hayashi, Hiroshi
	NRID 1000080049692 1000080049692 著者名横谷, 真一郎ヨコヤ, シンイチロウ Yokoya, Shinichiro
	NRID 1000010179773 1000010179773 著者名田中, 敏宏タナカ, トシヒロ Tanaka,Toshihiro
	NRID 1000090029116 1000090029116 著者名原, 茂太ハラ, シゲタ Hara, Shigeta
キーワード等	continuous casting
	submerged entry nozzle
	swirling flow
	swirl blade
	round billet casting
抄録	We have proposed a technology of swirling flow formation in submerged entry nozzles as a fundamental and effective measure for controlling flow pattern in continuous casting molds. A joint study started in 1997 between Nippon Institute of Technology, Osaka University, Kyushu Refractories and Sumitomo Metal Industries to develop swirling flow submerged entry nozzles with a swirling blade for steel casting. As a first step, we have developed a swirling flow submerged entry nozzle for round billet casting in Wakayama works. Generally, single port submerged entry nozzles are applied for round billet casting with small section molds. Outlet flow from the single port intrudes deeply in strands, which causes lack of equiaxed crystals at the center part of billets and low temperature of molten steel surface in the mold. Low temperature of molten steel surface in the mold induces solidified deckle and retard melting of mold fluxes. As a countermeasure of these problems, M-EMS (Electromagnetic stirring in mold) is widely applied for round billet casters. The basic effect of the swirling flow in the single port submerged entry nozzle for the round billet casting was evaluated by a wood metal experiment, then we applied the swirling flow submerged entry nozzle for the round billet casting. As a result of steel casting in Wakayama, we confirmed same phenomena as the wood metal experiment as follows; (1) The surface temperature of molten steel in the mold rose in the case that the swirling flow in the nozzle and the M-EMS were combined in the opposite direction of rotations by appropriate balance of intensity. (2) The surface temperature of molten steel in the mold also rose in the case without the M-EMS. (3) The surface temperature of molten steel in the mold was thought to rise as a result of the upward flow formation along the mold wall.
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	鉄と鋼
巻	93
号	9
開始ページ	575
終了ページ	582
刊行年月	2007
言語	日本語
ハンドルURL	https://hdl.handle.net/11094/26367
ISSN	00211575
NCID	AN00151251
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.2355/tetsutohagane.93.575
アクセス権	open access
権利情報	©日本鉄鋼協会
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	鉄と鋼.93(9) p.575-p.582
DC.title	丸ビレット連続鋳造用旋回流浸漬ノズル
	Swirling Flow Submerged Entry Nozzle for Round Billet Casting
	マル　ビレット　レンゾク　チュウゾウヨウ　センカイリュウ　シンセキ　ノズル
DC.creator	塚口, 友一
	ツカグチ, ユウイチ
	Tsukaguchi, Yuichi
	林, 浩史
	ハヤシ, ヒロシ
	Hayashi, Hiroshi
	横谷, 真一郎
	ヨコヤ, シンイチロウ
	Yokoya, Shinichiro
	田中, 敏宏
	タナカ, トシヒロ
	Tanaka,Toshihiro
	原, 茂太
	ハラ, シゲタ
	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	日本語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2007
DC.identifier	https://doi.org/10.2355/tetsutohagane.93.575
DC.subject	continuous casting
	submerged entry nozzle
	swirling flow
	swirl blade
	round billet casting
DCTERMS.abstract	We have proposed a technology of swirling flow formation in submerged entry nozzles as a fundamental and effective measure for controlling flow pattern in continuous casting molds. A joint study started in 1997 between Nippon Institute of Technology, Osaka University, Kyushu Refractories and Sumitomo Metal Industries to develop swirling flow submerged entry nozzles with a swirling blade for steel casting. As a first step, we have developed a swirling flow submerged entry nozzle for round billet casting in Wakayama works. Generally, single port submerged entry nozzles are applied for round billet casting with small section molds. Outlet flow from the single port intrudes deeply in strands, which causes lack of equiaxed crystals at the center part of billets and low temperature of molten steel surface in the mold. Low temperature of molten steel surface in the mold induces solidified deckle and retard melting of mold fluxes. As a countermeasure of these problems, M-EMS (Electromagnetic stirring in mold) is widely applied for round billet casters. The basic effect of the swirling flow in the single port submerged entry nozzle for the round billet casting was evaluated by a wood metal experiment, then we applied the swirling flow submerged entry nozzle for the round billet casting. As a result of steel casting in Wakayama, we confirmed same phenomena as the wood metal experiment as follows; (1) The surface temperature of molten steel in the mold rose in the case that the swirling flow in the nozzle and the M-EMS were combined in the opposite direction of rotations by appropriate balance of intensity. (2) The surface temperature of molten steel in the mold also rose in the case without the M-EMS. (3) The surface temperature of molten steel in the mold was thought to rise as a result of the upward flow formation along the mold wall.
DC.rights	©日本鉄鋼協会
DC.format	application/pdf
citation_title	丸ビレット連続鋳造用旋回流浸漬ノズル
	Swirling Flow Submerged Entry Nozzle for Round Billet Casting
	マル　ビレット　レンゾク　チュウゾウヨウ　センカイリュウ　シンセキ　ノズル
citation_author	塚口, 友一
	ツカグチ, ユウイチ
	Tsukaguchi, Yuichi
	林, 浩史
	ハヤシ, ヒロシ
	Hayashi, Hiroshi
	横谷, 真一郎
	ヨコヤ, シンイチロウ
	Yokoya, Shinichiro
	田中, 敏宏
	タナカ, トシヒロ
	Tanaka,Toshihiro
	原, 茂太
	ハラ, シゲタ
	Hara, Shigeta
citation_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
citation_language	日本語
citation_date	2007
citation_journal_title	鉄と鋼
citation_volume	93
citation_issue	9
citation_firstpage	575
citation_lastpage	582
citation_issn	00211575
citation_doi	https://doi.org/10.2355/tetsutohagane.93.575
citation_public_url	https://hdl.handle.net/11094/26367

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