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WO2006007672A2 - Tige d'arret pour l'apport de gaz dans un metal en fusion - Google Patents

Tige d'arret pour l'apport de gaz dans un metal en fusion Download PDF

Info

Publication number
WO2006007672A2
WO2006007672A2 PCT/BE2005/000116 BE2005000116W WO2006007672A2 WO 2006007672 A2 WO2006007672 A2 WO 2006007672A2 BE 2005000116 W BE2005000116 W BE 2005000116W WO 2006007672 A2 WO2006007672 A2 WO 2006007672A2
Authority
WO
WIPO (PCT)
Prior art keywords
layer
stopper
stopper rod
gas
internal chamber
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.)
Ceased
Application number
PCT/BE2005/000116
Other languages
English (en)
Other versions
WO2006007672A3 (fr
Inventor
Philippe Guillo
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.)
Vesuvius Group SA
Vesuvius Crucible Co
Original Assignee
Vesuvius Group SA
Vesuvius Crucible Co
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 Vesuvius Group SA, Vesuvius Crucible Co filed Critical Vesuvius Group SA
Priority to CA2572497A priority Critical patent/CA2572497C/fr
Priority to US11/630,633 priority patent/US20070210494A1/en
Priority to MX2007000764A priority patent/MX2007000764A/es
Priority to BRPI0513258A priority patent/BRPI0513258B1/pt
Priority to PL05763960T priority patent/PL1789220T3/pl
Priority to JP2007521753A priority patent/JP4933430B2/ja
Priority to KR1020077001592A priority patent/KR101128610B1/ko
Priority to DE602005003968T priority patent/DE602005003968T2/de
Priority to AU2005263118A priority patent/AU2005263118B2/en
Priority to EP05763960A priority patent/EP1789220B1/fr
Publication of WO2006007672A2 publication Critical patent/WO2006007672A2/fr
Publication of WO2006007672A3 publication Critical patent/WO2006007672A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
    • B22D41/18—Stopper-rods therefor
    • 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
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
    • B22D41/18—Stopper-rods therefor
    • B22D41/186—Stopper-rods therefor with means for injecting a fluid into the melt
    • 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
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening

Definitions

  • Stopper rod for delivering gas into a molten metal.
  • This invention relates to a mono-block stopper rod used to control the flow of molten metal from a discharge nozzle in a holding vessel during metal teeming.
  • gases injected down the stopper has been shown to have significant benefits on the quality of metal being cast.
  • inert gases such as argon or nitrogen can be injected to reduce the problems due to alumina build-up and clogging or to assist in removing solidification products from the vicinity of the discharge nozzle.
  • Reactive gases may also be employed when the melt composition needs modifying.
  • the stopper - generally made from an alumina carbon refractory composition - is provided with an internal chamber connected to gas supply means on the one end and to a gas discharge port at the other end.
  • the carbon present in the composition constituting the stopper body could reduce some of the metal oxides also present in the composition; this reduction is accompanied by the generation of carbon monoxide.
  • the carbon monoxide injected into the molten metal will in turn oxidize the aluminum which has been added to calm the steel producing thereby important quantities of alumina contributing thus to the alumina build-up and clogging.
  • a stopper rod adapted to deliver gas during pouring of molten metal comprising a stopper body having an internal chamber and a gas discharge port, a bore connecting the internal chamber to the gas discharge port, the internal chamber and the bore defining a gas passageway.
  • the walls of the gas passageway are provided with a layer of a material which will not produce carbon monoxide at the temperature of use.
  • the layer can be formed as a coating applied on the walls of the gas passageway after the manufacture of the stopper rod.
  • a coating can be applied by spraying a liquid, wet or semi-wet composition or simply by filling the inner chamber with the appropriate composition. Once the coating is dried, the stopper rod can then be cured. Alternatively, the curing of the stopper can take place before the coating step.
  • the layer is a liner pressed simultaneously with the stopper rod body. In this case, it is indeed possible to reduce the number of manufacturing steps.
  • the layer extends through essentially the whoje thickness of the walls of the gas passageway.
  • the material constituting the a layer which will not produce carbon monoxide at the temperature of use can be selected from three different categories of materials: a) materials which do not contain carbon; b) materials essentially constituted of non reducible refractory oxides; or c) materials comprising elements which will react with the generated carbon monoxide.
  • the selected material will present two or three of the above properties.
  • suitable material of the first category are silica (for example vitreous silica), alumina, mullite or magnesia based material (spinel).
  • silica for example vitreous silica
  • alumina for example alumina
  • mullite for example mullite
  • magnesia based material spinel
  • these materials can however be somehow difficult to apply as a liner or coating (the lack of carbon in the layer can cause some thermal shock problems) and do not constitute the preferred embodiment of the invention.
  • Suitable materials of the second category are for example pure alumina carbon compositions.
  • these compositions should contain very low amount of silica or of conventional impurities which are usually found in silica (sodium or potassium oxide).
  • the silica and its conventional impurities should be kept under 2 wt. %, preferably under 1 wt. %.
  • Suitable materials of the third category comprises for example free metal able to combine with carbon monoxide to form a metal oxide and free carbon. Silicon and aluminum are suitable for this application. These materials can also or alternatively comprise carbides or nitrides able to react with carbon monoxide (for example silicon or boron carbides). [0014] Preferably the selected material will belong to the second or third categories, even preferably, it will belong to the second and third category.
  • a suitable material constituting the layer which will not produce carbon monoxide at the temperature of use can comprise 60 to 88 wt. % of alumina, 10 to 20 wt. % graphite and 2 to 10 wt. % of silicon carbide.
  • Such a material is essentially constituted of non-oxides species or non- reducible oxides and comprises silicon carbide which can react with the carbon monoxide if some is generated in working condition.
  • Fig. 1 shows a cross-section of a stopper rod according to the invention.
  • Reference 1 depicts respectively the internal chamber and a gas discharge port of the stopper rod.
  • a bore 3 connects the internal chamber 1 to the gas discharge port 2.
  • the bore 3 and the internal chamber 1 define a passageway for the gas.
  • Fig. 1 represents an embodiment wherein the layer 4 has been copressed as a liner with the stopper body.
  • the liner 4 can be constituted of several pre-formed tubular portions (41 , 42, 43) which are all copressed with the stopper body.
  • a portion of the metal rod 5 connecting the stopper rod to the rigging device (not shown) is depicted in working position.
  • the metal rod 5 extends beyond the highest point of the layer 4.
  • a sealing gasket 6 is inserted around the lower end of the metal rod 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Continuous Casting (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Furnace Details (AREA)

Abstract

L'invention concerne une tige d'arrêt pour acheminer du gaz lors du versement de métal en fusion et comprenant un corps d'arrêt présentant une chambre intérieure ainsi qu'un orifice de décharge de gaz, un alésage reliant la chambre intérieure à l'orifice de décharge de gaz, la chambre intérieure ainsi que l'alésage définissant un passage de gaz. Selon l'invention, les parois du passage de gaz sont dotées d'une couche d'un matériau ne produisant pas de monoxyde de carbone à la température d'utilisation. La tige d'arrêt de l'invention ne contamine pas le gaz traversant.
PCT/BE2005/000116 2004-07-20 2005-07-15 Tige d'arret pour l'apport de gaz dans un metal en fusion Ceased WO2006007672A2 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
CA2572497A CA2572497C (fr) 2004-07-20 2005-07-15 Tige d'arret pour l'apport de gaz dans un metal en fusion
US11/630,633 US20070210494A1 (en) 2004-07-20 2005-07-15 Stopper Rod for Delivering Gas Into a Molten Metal
MX2007000764A MX2007000764A (es) 2004-07-20 2005-07-15 Barra obturadora para suministrar gas a un metal fundido.
BRPI0513258A BRPI0513258B1 (pt) 2004-07-20 2005-07-15 haste de tampão, e, montagem de uma haste de tampão com uma haste de metal
PL05763960T PL1789220T3 (pl) 2004-07-20 2005-07-15 Żerdź zatyczkowa do dostarczania gazu do roztopionego metalu
JP2007521753A JP4933430B2 (ja) 2004-07-20 2005-07-15 溶融金属にガスを供給するストッパロッド
KR1020077001592A KR101128610B1 (ko) 2004-07-20 2005-07-15 용융 금속 내부로 가스를 반송하는 스토퍼 로드
DE602005003968T DE602005003968T2 (de) 2004-07-20 2005-07-15 Stopfenstange zur zufuhr von gas in eine metallschmelze
AU2005263118A AU2005263118B2 (en) 2004-07-20 2005-07-15 Stopper rod for delivering gas into a molten metal
EP05763960A EP1789220B1 (fr) 2004-07-20 2005-07-15 Quenouille adaptée à la délivrance de gaz dans un métal liquide

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP04447179.5 2004-07-20
EP04447179 2004-07-20

Publications (2)

Publication Number Publication Date
WO2006007672A2 true WO2006007672A2 (fr) 2006-01-26
WO2006007672A3 WO2006007672A3 (fr) 2006-03-02

Family

ID=34933070

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BE2005/000116 Ceased WO2006007672A2 (fr) 2004-07-20 2005-07-15 Tige d'arret pour l'apport de gaz dans un metal en fusion

Country Status (20)

Country Link
US (1) US20070210494A1 (fr)
EP (1) EP1789220B1 (fr)
JP (1) JP4933430B2 (fr)
KR (1) KR101128610B1 (fr)
CN (1) CN1988972A (fr)
AR (1) AR050257A1 (fr)
AT (1) ATE381402T1 (fr)
AU (1) AU2005263118B2 (fr)
BR (1) BRPI0513258B1 (fr)
CA (1) CA2572497C (fr)
DE (1) DE602005003968T2 (fr)
ES (1) ES2299056T3 (fr)
MX (1) MX2007000764A (fr)
MY (1) MY141417A (fr)
PL (1) PL1789220T3 (fr)
RU (1) RU2375150C2 (fr)
TW (1) TWI357837B (fr)
UA (1) UA89642C2 (fr)
WO (1) WO2006007672A2 (fr)
ZA (1) ZA200700750B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007004958B4 (de) * 2007-01-26 2010-04-29 Innotec Ltd. Stopfen zur Verwendung in metallurgischen Einrichtungen
EP2653248A1 (fr) 2012-04-16 2013-10-23 Refractory Intellectual Property GmbH & Co. KG Bouchon réfractaire en céramique
WO2021069583A1 (fr) 2019-10-10 2021-04-15 Refractory Intellectual Property Gmbh & Co. Kg Produit pressé isostatiquement destiné à être utilisé dans la manipulation de métal fondu et son procédé de production

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2189231B1 (fr) * 2008-11-19 2010-10-27 Refractory Intellectual Property GmbH & Co. KG Quenouille
EP2209056B1 (fr) * 2009-01-16 2012-01-04 Refractory Intellectual Property GmbH & Co. KG Dispositif de contrôle du flux dans un processus de coulée d'acier en continu
CN101513670B (zh) * 2009-03-18 2010-12-01 山东中齐耐火材料集团有限公司 一种整体塞棒丝杆连接装置及其制作方法
ES2428314T3 (es) * 2011-09-23 2013-11-07 Refractory Intellectual Property Gmbh & Co. Kg Tapón de colada refractario cerámico
CN104368804B (zh) * 2014-09-25 2016-08-24 武汉重工铸锻有限责任公司 塞头与喷嘴接头的整体加工方法
EP3705204B1 (fr) * 2019-03-08 2022-08-03 Refractory Intellectual Property GmbH & Co. KG Tige de butée et procédé de fourniture d'un rideau de gaz uniforme autour d'une tige de butée
JP7022095B2 (ja) * 2019-03-28 2022-02-17 日本製鋼所Ｍ＆Ｅ株式会社 ストッパ

Family Cites Families (19)

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Publication number Priority date Publication date Assignee Title
US3200457A (en) * 1964-03-09 1965-08-17 United States Steel Corp Method of regulating the discharge of molten metal from ladles
US3565412A (en) * 1968-12-03 1971-02-23 Dresser Ind Device for stirring molten metal
IT1156736B (it) * 1978-05-12 1987-02-04 Centro Speriment Metallurg Metodo per l'introduzione di sostanze disossi-desolforanti sotto battente di metalli liquidi senza impiego di veicoli gassosi
US4682718A (en) * 1983-08-16 1987-07-28 Toshiba Ceramics Co., Ltd. Nozzle for continuous casting of molten steel
JPS6246167A (ja) * 1985-08-22 1987-02-28 株式会社東芝 除霜装置
US4870037A (en) * 1987-09-23 1989-09-26 Vesuvius Crucible Company Prevention of Al2 O3 formation in pouring nozzles and the like
US5185300A (en) * 1991-03-11 1993-02-09 Vesuvius Crucible Company Erosion, thermal shock and oxidation resistant refractory compositions
GB2263427A (en) * 1992-01-09 1993-07-28 Thor Ceramics Ltd Refractory stopper rod with a lined channel
JP2627473B2 (ja) * 1992-07-15 1997-07-09 新日本製鐵株式会社 連続鋳造用ロングストッパー
FR2695848B1 (fr) * 1992-09-21 1994-12-09 Lorraine Laminage Busette de coulée de métal et procédés de fabrication de cette busette.
US5370370A (en) * 1993-02-19 1994-12-06 Vesuvius Crucible Company Liner for submerged entry nozzle
US5681499A (en) * 1994-06-15 1997-10-28 Vesuvius Crucible Company Method and compositions for making refractory shapes having dense, carbon free surfaces and shapes made therefrom
IN191421B (fr) * 1994-06-15 2003-11-29 Vesuvius Frnance Sa
JP2796524B2 (ja) * 1996-04-11 1998-09-10 品川白煉瓦株式会社 複合浸漬ノズル
BR9915429A (pt) * 1998-11-20 2001-08-07 Vesuvius Crucible Co Haste de tampão.
WO2000078484A1 (fr) * 1999-06-22 2000-12-28 Foseco International Limited Article forme d'une matiere refractaire a liaison de carbone
JP3426177B2 (ja) * 1999-12-28 2003-07-14 明智セラミックス株式会社 鋳造用ストッパー
KR20020054132A (ko) * 2000-12-27 2002-07-06 이구택 연속주조용 가스 채널형 스토퍼 및 이를 이용한연속주조방법
US6475426B1 (en) * 2001-03-27 2002-11-05 Vesuvius Crucible Company Resin-bonded liner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007004958B4 (de) * 2007-01-26 2010-04-29 Innotec Ltd. Stopfen zur Verwendung in metallurgischen Einrichtungen
EP2653248A1 (fr) 2012-04-16 2013-10-23 Refractory Intellectual Property GmbH & Co. KG Bouchon réfractaire en céramique
WO2021069583A1 (fr) 2019-10-10 2021-04-15 Refractory Intellectual Property Gmbh & Co. Kg Produit pressé isostatiquement destiné à être utilisé dans la manipulation de métal fondu et son procédé de production

Also Published As

Publication number Publication date
CA2572497C (fr) 2012-05-01
UA89642C2 (ru) 2010-02-25
AU2005263118A1 (en) 2006-01-26
ES2299056T3 (es) 2008-05-16
CA2572497A1 (fr) 2006-01-26
EP1789220A2 (fr) 2007-05-30
RU2007100205A (ru) 2008-08-27
KR101128610B1 (ko) 2012-03-26
KR20070030913A (ko) 2007-03-16
JP2008506536A (ja) 2008-03-06
MX2007000764A (es) 2007-03-28
DE602005003968D1 (de) 2008-01-31
MY141417A (en) 2010-04-30
DE602005003968T2 (de) 2008-12-04
BRPI0513258B1 (pt) 2016-09-27
TW200615062A (en) 2006-05-16
BRPI0513258A (pt) 2008-04-29
ATE381402T1 (de) 2008-01-15
US20070210494A1 (en) 2007-09-13
TWI357837B (en) 2012-02-11
AR050257A1 (es) 2006-10-11
PL1789220T3 (pl) 2008-07-31
WO2006007672A3 (fr) 2006-03-02
ZA200700750B (en) 2008-08-27
EP1789220B1 (fr) 2007-12-19
RU2375150C2 (ru) 2009-12-10
CN1988972A (zh) 2007-06-27
AU2005263118B2 (en) 2009-02-19
JP4933430B2 (ja) 2012-05-16

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