丸ビレット連続鋳造用旋回流浸漬ノズル

塚口, 友一; 林, 浩史; 横谷, 真一郎; 田中, 敏宏; 原, 茂太

doi:info:doi/10.2355/tetsutohagane.93.575

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タイトル	丸ビレット連続鋳造用旋回流浸漬ノズル
別タイトル	Swirling Flow Submerged Entry Nozzle for Round Billet Casting
タイトル (ヨミ)	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	塚口, 友一塚口, 友一
	林, 浩史林, 浩史
	横谷, 真一郎横谷, 真一郎
	田中, 敏宏田中, 敏宏
	原, 茂太原, 茂太
著者の別表記	Tsukaguchi, Yuichi
	Hayashi, Hiroshi
	Yokoya, Shinichiro
	Tanaka,Toshihiro
	Hara, Shigeta
著者 (ヨミ)	ツカグチ, ユウイチ
	ハヤシ, ヒロシ
	ヨコヤ, シンイチロウ
	タナカ, トシヒロ
	ハラ, シゲタ
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.
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	鉄と鋼
巻	93
号	9
開始ページ	575
終了ページ	582
刊行年月	2007
ISSN	00211575
NCID	AN00151251
DOI (出版社版)	info:doi/10.2355/tetsutohagane.93.575
URL	http://hdl.handle.net/11094/26367
権利情報	©日本鉄鋼協会
言語	日本語
カテゴリ	学術雑誌論文 Journal Article

著者版フラグ	publisher
NII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
DCTERMS.alternative	Swirling Flow Submerged Entry Nozzle for Round Billet Casting
DC.creator	塚口, 友一
	林, 浩史
	横谷, 真一郎
	田中, 敏宏
	原, 茂太
DC.creator	Tsukaguchi, Yuichi
	Hayashi, Hiroshi
	Yokoya, Shinichiro
	Tanaka,Toshihiro
	Hara, Shigeta
DC.publisher	日本鉄鋼協会
DC.language" scheme="DCTERMS.RFC1766	日本語
DCTERMS.issued" scheme="DCTERMS.W3CDTF	2007
DC.identifier	info:doi/10.2355/tetsutohagane.93.575
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/26367
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
citation_title	丸ビレット連続鋳造用旋回流浸漬ノズル
citation_author	塚口, 友一
	林, 浩史
	横谷, 真一郎
	田中, 敏宏
	原, 茂太
citation_publisher	日本鉄鋼協会
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	info:doi/10.2355/tetsutohagane.93.575
citation_public_url	http://hdl.handle.net/11094/26367
citation_keywords	continuous casting
	submerged entry nozzle
	swirling flow
	swirl blade
	round billet casting

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