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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
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
論文詳細を表示
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