EP0563376B1 - Brique a nez ou brique de repartition pour le soufflage de gaz dans du metal en fusion - Google Patents

Brique a nez ou brique de repartition pour le soufflage de gaz dans du metal en fusion Download PDF

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Publication number
EP0563376B1
EP0563376B1 EP89906468A EP89906468A EP0563376B1 EP 0563376 B1 EP0563376 B1 EP 0563376B1 EP 89906468 A EP89906468 A EP 89906468A EP 89906468 A EP89906468 A EP 89906468A EP 0563376 B1 EP0563376 B1 EP 0563376B1
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EP
European Patent Office
Prior art keywords
brick
small
diameter pipes
inert gas
molten metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89906468A
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German (de)
English (en)
Other versions
EP0563376A1 (fr
EP0563376A4 (fr
Inventor
Takashi Otsuka
Kenji Yamamoto
Mototsugu Osada
Tado Taniguchi
Yoshifumi Shigeta;
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shinagawa Refractories Co Ltd
Original Assignee
Shinagawa Refractories Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shinagawa Refractories Co Ltd filed Critical Shinagawa Refractories Co Ltd
Publication of EP0563376A4 publication Critical patent/EP0563376A4/fr
Publication of EP0563376A1 publication Critical patent/EP0563376A1/fr
Application granted granted Critical
Publication of EP0563376B1 publication Critical patent/EP0563376B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/42—Features relating to gas injection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles
    • B22D41/58—Pouring-nozzles with gas injecting means

Definitions

  • This invention relates to an inert gas injecting plate brick or insert nozzle brick for use in a sliding gate valve apparatus of molten metal as defined in the preamble of claim 1.
  • the molten metal received in a ladle is poured into a mold through a tundish.
  • a certain amount of molten metal is kept stored within the tundish before starting the pouring of the molten metal into the mold at the beginning of casting, and after the flowing-up of impurities a nozzle is opened to start the pouring.
  • This procedure is called a closed start, and these days this technique has now been introduced.
  • the document JP-A-53-123 336 discloses an inert gas injecting plate brick or insert nozzle brick for use in a sliding gate valve apparatus of molten metal, in particular for a closed start pouring system, wherein an amount of molten metal is stored in a tundish prior to pouring the molten metal into a mold at the beginning of casting, wherein the sliding gate valve is provided with a pipe for gas injection.
  • the sliding gate valve apparatus is provided with an inert gas injecting plate, wherein a plate is provided with a tube for injecting gas.
  • the brick forming the plate is provided with a corresponding boring to receive the pipe.
  • the document JP-A-61-195 734 discloses a nozzle for manufacturing composite matter wherein a plurality of pipes for blowing in an inert gas are embedded and placed in a molten metal nozzle made of a refractory material. These pipes can be connected to a gas chamber which is provided along the periphery of the outer wall of the nozzle and is connected to a gas supply source. Again, the tubes are inserted into borings provided in the nozzle.
  • the inventors of this invention have made extensive studies and researches to solve the various problems innate in the known systems, and as the result, they have been successful in developing a novel inert gas injecting plate brick or insert nozzle brick for use in a sliding gate valve apparatus of molten metal, which brick is of quite different idea from the known systems.
  • the object underlying the present invention is to provide an inert gas injecting plate brick or insert nozzle brick for use in a sliding gate valve appratus of molten metal which can be produced in a simple process and offers a high reliability in operation for supplying gas.
  • an inert gas injecting plate brick or insert nozzle brick of the type specified above which is characterized in that the plate brick or insert nozzle brick is horizontally split into at least two parts which form split surfaces between each other, in that a plurality of small diameter pipes are provided which are sealingly arranged and secured in the respective split surfaces, and in that the small-diameter pipes are in communication with an external connecting port to a gas source and have their injecting openings opening into a melt passing hole.
  • the small-diameter pipes are bundled in a group or a plurality of groups which communicate with the connecting port of a gas source and the melt passing hole.
  • the small-diameter pipes are disposed along lines which, when viewed from above, extend perpendicularly or angularly with respect to the melt passing hole, wherein the small-diameter pipes are provided in planes which are perpendicular or inclined with respect to the melt passing hole so that they open horizontally and/or obliquely upwards and/or downwards into the melt passing hole.
  • the small-diameter pipes are made of metal or ceramic.
  • the brick is provided with at least one through hole each of which is provided with small-diameter pipes for injecting gas.
  • one of the parts is provided with grooves receiving the plurality of small-diameter pipes, and the other of the parts opposite thereto is formed without grooves.
  • the present invention is technically constituted such that a plate brick or insert nozzle brick for use in an apparatus of discharging molten metal is split into at least two parts horizontally, said split surfaces are provided with a number of small diameter pipes (2) in the sealed state, and said pipes are secured to said split surface, and said small diameter pipes are communicated with a gas passing portion.
  • Fig. 1 shows an embodiment in which the present invention is applied to a bottom plate brick.
  • said plate brick is split into bricks 3 and 4, a number of small-diameter pipes 2 each having a connecting port 1 to the gas source are involved and arranged in the jointing surfaces of said split bricks 3 and 4, and gas injecting openings 5 of said small-diameter pipes 2 in group communicate with the melt passing hole.
  • Fig. 2 is similar in construction to Fig. 1, and it is an embodiment in which the gas injecting direction of the small-diameter pipe 2 is brought close to the normal direction of the outer periphery of the melt passing hole.
  • Fig. 2 is similar to Fig. 1 in other constitution.
  • Fig. 3a is a plan view showing an assembling mode of the group of said small-diameter pipes 2, and Fig. 3b shows a sectional view of the group of said small-diameter pipes 2 in the bound state.
  • Fig. 4 is an embodiment in which the present invention is applied to an insert nozzle brick.
  • the insert nozzle brick is split into bricks 3 and 4, a group of the small-diameter pipes 2 are involved and arranged, similarly to the above, in the split surfaces, and gas injecting openings 5 communicate with the melt passing hole.
  • Fig. 5 is a sectional view where respective parts in the embodiment of Fig. 1 are separately shown thereby to exemplify their arranging relationship.
  • Fig. 6 shows an embodiment in which the insert nozzle brick is split into three parts (3, 3' and 4), and the gas injecting openings 5 are disposed in two rows of upward and horizontal directions in the melt passing hole.
  • Fig. 7 shows an embodiment in which similarly, the insert nozzle brick is split into three parts (3, 3' and 4), and the injecting openings 5 are disposed also in two rows up and down.
  • a plate brick or an insert nozzle brick which is used in a sliding gate valve apparatus of molten metal is split into two or more parts, several slender stainless or copper pipes are arranged in the split surfaces toward the nozzle opening, and thereafter the split plate bricks or insert nozzle bricks are adhered with mortar or the like.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Continuous Casting (AREA)

Abstract

Brique à nez ou brique de répartition pour le soufflage de gaz dans un éjecteur de métal en fusion, caractérisées en ce qu'elles sont divisées horizontalement en au moins deux segments, un ensemble de conduites de petit diamètre étant fixées et scellées sur les surfaces de division. Chacune de ces briques empêche la fuite d'un gaz soufflé dans l'installation susmentionnée, permet d'effectuer une opération de coulée stable, et rend superflues les coûteuses étapes supplémentaires, telles que l'étape de découpage, l'étape de perçage et l'étape de jonction des briques.

Claims (6)

  1. Plaque ou insert de buse en matière réfractaire (3, 4) pour injection de gaz inerte, utilisable dans un dispositif d'obturateur coulissant pour la coulée de métél en fusion, en particulier pour un système de versage à départ fermé dans lequel on stocke une certaine quantité de métal fondu dans une cuvette intermédiaire avant de verser le métal fondu dans un moule au début de la coulée, et l'obturateur coulissant est pourvu d'un tube pour injection de gaz,
    caractérisé en ce que la plaque ou l'insert de buse en matière réfractaire (3, 4) est horizontalement divisé en au moins deux parties (3, 3' et 4, respectivement) qui définissent entre elles des surfaces de séparation,
       en ce qu'une pluralité de tubes de petit diamètre (2) sont disposés de façon étanche et fixés dans les surfaces de séparation respectives,
       et en ce que les tubes de petit diamètre (2) sont en communication avec une tubulure de raccordement extérieur (1) à une source de gaz, et leurs orifices d'injection (5) débouchent dans un trou de passage du métal fondu.
  2. Plaque ou insert de buse en matière réfractaire (3, 4) pour injection de gaz inerte suivant la revendication 1,
    caractérisé en ce que les tubes de petit diamètre (2) sont rassemblés en un groupe ou une pluralité de groupes qui communiquent avec la tubulure de raccordement (1) d'une source de gaz et avec le trou de passage du métal fondu.
  3. Plaque ou insert de buse en matière réfractaire (3, 4) pour injection de gaz inerte suivant la revendication 1 ou 2,
    caractérisé en ce que les tubes de petit diamètre (2) sont disposés le long de lignes qui s'étendent, en vue de dessus, perpendiculairement ou obliquement par rapport au trou de passage du métal fondu, les tubes de petit diamètre (2) étant disposés dans des plans qui sont perpendiculaires ou inclinés par rapport au trou de passage du métal fondu, de sorte qu'ils débouchent horizontalement et/ou obliquement vers le haut et/ou vers le bas dans le trou de passage du métal fondu.
  4. Plaque ou insert de buse en matière réfractaire (3, 4) pour injection de gaz inerte suivant une quelconque des revendications 1 à 3, caractérisé en ce que les tubes de petit diamètre (2) sont fabriqués en métal ou en céramique:
  5. Plaque ou insert de buse en matière réfractaire (3, 4) pour injection de gaz inerte suivant une quelconque des revendications 1 à 4, caractérisé en ce que la plaque ou l'insert (3, 4) comporte au moins un trou traversant dont chacun reçoit des tubes de petit diamètre (2) pour injection de gaz.
  6. Plaque ou insert de buse en matière réfractaire (3, 4) pour injection de gaz inerte suivant une quelconque des revendications 1 à 5,
    caractérisé en ce qu'une (4) des parties (3, 4) comporte des rainures (10) de réception de la pluralité des tubes de petit diamètre et l'autre (3) des parties (3, 4),opposée à la première, ne comporte pas de rainures.
EP89906468A 1989-06-01 1989-06-01 Brique a nez ou brique de repartition pour le soufflage de gaz dans du metal en fusion Expired - Lifetime EP0563376B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1989/000551 WO1990014908A1 (fr) 1989-06-01 1989-06-01 Brique a nez ou brique de repartition pour le soufflage de gaz dans du metal en fusion

Publications (3)

Publication Number Publication Date
EP0563376A4 EP0563376A4 (fr) 1993-01-09
EP0563376A1 EP0563376A1 (fr) 1993-10-06
EP0563376B1 true EP0563376B1 (fr) 1997-03-05

Family

ID=13958702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89906468A Expired - Lifetime EP0563376B1 (fr) 1989-06-01 1989-06-01 Brique a nez ou brique de repartition pour le soufflage de gaz dans du metal en fusion

Country Status (6)

Country Link
EP (1) EP0563376B1 (fr)
KR (1) KR960005885B1 (fr)
AU (1) AU652916B2 (fr)
BR (1) BR8907894A (fr)
DE (1) DE68927834T2 (fr)
WO (1) WO1990014908A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH684937A5 (de) * 1991-11-19 1995-02-15 Stopinc Ag Verschlussplatte für einen Schiebeverschluss an einem Metallschmelze enthaltenden Behälter.
JP2019206018A (ja) * 2018-05-29 2019-12-05 日本製鉄株式会社 鋼の給湯方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1472532A (en) * 1973-04-27 1977-05-04 Didier Werke Ag Sliding gate nozzles for metallurgical vessels
DE2555285A1 (de) * 1975-12-09 1977-06-16 Kloeckner Werke Ag Vorrichtung zum abgiessen von stahl
JPS53123336A (en) * 1977-04-04 1978-10-27 Nippon Steel Corp Rectifier method of molten steel pouring
DE2749405C2 (de) * 1977-11-04 1982-05-27 Korf-Stahl Ag, 7570 Baden-Baden Metallstranggießverfahren, insbesondere Stahlstranggießverfahren und Vorrichtung zur Durchführung des Verfahrens
ATA511281A (de) * 1981-11-27 1987-03-15 Zimmermann & Jansen Gmbh Vorrichtung zum stranggiessen von metallen
JPS61195734A (ja) * 1985-02-26 1986-08-30 Nippon Kokan Kk <Nkk> 複合金属塊の製造用ノズル
AT383529B (de) * 1985-10-24 1987-07-10 Voest Alpine Ag Einrichtung zum vergiessen von schmelzen
US4756452A (en) * 1986-11-13 1988-07-12 Shinagawa Refractories Co., Ltd. Molten metal pouring nozzle

Also Published As

Publication number Publication date
AU652916B2 (en) 1994-09-15
DE68927834D1 (de) 1997-04-10
WO1990014908A1 (fr) 1990-12-13
AU3746889A (en) 1991-01-07
EP0563376A1 (fr) 1993-10-06
BR8907894A (pt) 1992-04-28
EP0563376A4 (fr) 1993-01-09
DE68927834T2 (de) 1997-10-02
KR960005885B1 (ko) 1996-05-03

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