EP0379647A2 - Busette réfractaire et sa bobine à induction - Google Patents

Busette réfractaire et sa bobine à induction Download PDF

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Publication number
EP0379647A2
EP0379647A2 EP89119300A EP89119300A EP0379647A2 EP 0379647 A2 EP0379647 A2 EP 0379647A2 EP 89119300 A EP89119300 A EP 89119300A EP 89119300 A EP89119300 A EP 89119300A EP 0379647 A2 EP0379647 A2 EP 0379647A2
Authority
EP
European Patent Office
Prior art keywords
electrically conductive
refractory
molten metal
ceramic material
primary coil
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.)
Granted
Application number
EP89119300A
Other languages
German (de)
English (en)
Other versions
EP0379647A3 (fr
EP0379647B1 (fr
Inventor
Raimund Brückner
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.)
Didier Werke AG
Original Assignee
Didier Werke AG
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 Didier Werke AG filed Critical Didier Werke AG
Priority to AT89119300T priority Critical patent/ATE94791T1/de
Publication of EP0379647A2 publication Critical patent/EP0379647A2/fr
Publication of EP0379647A3 publication Critical patent/EP0379647A3/fr
Application granted granted Critical
Publication of EP0379647B1 publication Critical patent/EP0379647B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B22D39/00—Equipment for supplying molten metal in rations
    • 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
    • B22D41/60—Pouring-nozzles with heating or cooling means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements
    • H05B6/367—Coil arrangements for melting furnaces

Definitions

  • the invention relates to a refractory connection between a vessel containing a molten metal and an extraction device for the molten metal, in particular a refractory spout for molten steel.
  • the object of the present invention is to provide a refractory spout of the type mentioned, in which the disadvantages mentioned are reliably avoided.
  • the spout inner wall consists entirely or partially of ceramic material which is electrically conductive at at least the liquidus temperature of the molten metal and can be inductively heated by means of a primary coil, or has such a material.
  • the required conductivity should expediently begin at least at the temperature and should at least continue until the liquidus temperature of the molten metal or above which the pouring inner wall is heated by the molten metal itself.
  • Induction furnaces are known per se in which the wall of the heating chamber is heated by means of an induction coil surrounding it (cf. e.g. GB 2 121 028 A).
  • the induction coils known per se are supplied with a completely new application and thereby undesirable freezing of molten metal in a refractory spout and undesirable deposits from the molten metal are reliably avoided by inductively heating the pouring wall to the required temperature or keeping it there , in which the entire adverse side effects are avoided.
  • the spout does not consist of the electrically conductive ceramic material over its entire length, but only over a longitudinal section of the spout wall, and if the induction coil is assigned to this longitudinal section.
  • inductively heatable ceramic material one which is or has ZrO2 is particularly suitable in the context of the invention. Such materials have already proven themselves as sheathing induction coils and have excellent erosion and corrosion resistance against molten metal.
  • the ZrO2 is stabilized by means of Y2O3, CaO and / or MgO.
  • the primary coil itself can also consist of ceramic material, which is particularly advantageous if cooling for energy reasons is to be dispensed with.
  • the primary coil can advantageously be part of the pouring wall itself, for example embedded in it.
  • the output of the primary coil can be regulated, the heating temperature can be changed to regulate the temperature of the molten metal and / or to prevent or remove deposits from the molten metal.
  • the frequency range should expediently be in the order of 3 to 10 MHz.
  • the invention relates to a novel, at least one primary coil inductor for heating electrically conductive material, in particular electrically conductive, ceramic material or components made therefrom. According to the invention, it is distinguished by the fact that its coil consists of an electrically conductive ceramic material. This solves the problem on economical way to operate an induction coil permanently. As with metal coils, cooling is not required.
  • Such an induction coil can be used according to a further proposal of the invention for inductively heating components of the electrically conductive material, in particular tubular components, preferably connections between a vessel containing molten metal and a withdrawal device, such as refractory spouts of the type described above.
  • the coil preferably encloses the component or is integrated in its wall.
  • the refractory spout for a continuous caster according to FIG. 1 has a spout inner wall 1 which encloses a flow channel 3. At a distance, the spout inner wall 1, in this case over its entire length L, is surrounded by a primary coil 4.
  • the primary coil 4 in turn is provided with a metallic shield 5 against stray radiation, which can be cooled.
  • the space 7 delimited by the shield 5 and the outer wall surface 6 of the pouring inner wall 1 can be filled with a thermally insulating material, for example a ZrO2 granulate.
  • the primary coil 4 can be connected to a frequency-dependent current source with controllable power.
  • the inner wall surface 2 of the spout inner wall 1 delimiting the flow channel 3 can be heated to the required extent in a controlled manner or can be kept at the desired temperature after the wall has been heated by the molten metal flowing through it, in order to avoid freezing of the molten metal.
  • the inner wall 2 can have a layer or casing that is electrically insulating from the molten steel.
  • the primary coil 4 also extends over the entire length L of the spout inner wall 1, in contrast to FIG. 1, however, it is embedded in the stronger spout inner wall 1 itself.
  • the optionally cooled metal shield 5 is here directly on the outer wall surface 6 of the inner wall 1.
  • the inner wall 2 can also have a layer or casing which is electrically insulating from the molten steel.
  • the primary coil 4 can be arranged such that its inducing magnetic field is directed parallel or perpendicular to the axis of the spout.
  • the primary coil 4 itself can consist of electrically conductive ceramic material, so that cooling of the coil itself is unnecessary.
  • An arrangement equipped with such a coil 4 can also be used for other heating purposes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • General Induction Heating (AREA)
  • Furnace Details (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Laminated Bodies (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Gasification And Melting Of Waste (AREA)
EP89119300A 1988-12-19 1989-10-18 Busette réfractaire et sa bobine à induction Expired - Lifetime EP0379647B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89119300T ATE94791T1 (de) 1988-12-19 1989-10-18 Feuerfeste verbindung sowie induktionsspule hierfuer.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3842690 1988-12-19
DE3842690A DE3842690C2 (de) 1988-12-19 1988-12-19 Feuerfeste Verbindung sowie Induktionsspule hierfür

Publications (3)

Publication Number Publication Date
EP0379647A2 true EP0379647A2 (fr) 1990-08-01
EP0379647A3 EP0379647A3 (fr) 1991-03-13
EP0379647B1 EP0379647B1 (fr) 1993-09-22

Family

ID=6369512

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89119300A Expired - Lifetime EP0379647B1 (fr) 1988-12-19 1989-10-18 Busette réfractaire et sa bobine à induction

Country Status (10)

Country Link
US (2) US5052597A (fr)
EP (1) EP0379647B1 (fr)
JP (1) JP2884246B2 (fr)
KR (1) KR900009184A (fr)
CN (1) CN1043648A (fr)
AT (1) ATE94791T1 (fr)
BR (1) BR8906446A (fr)
CA (1) CA2005657C (fr)
DE (2) DE3842690C2 (fr)
ZA (1) ZA898396B (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992015413A1 (fr) * 1991-03-04 1992-09-17 Mefos Stiftelsen För Metallurgisk Forskning Procede et agencement permettant de purger, a l'aide d'un gaz, un bain de metal en fusion contenu dans un recipient
FR2701225A1 (fr) * 1993-02-08 1994-08-12 Seva Procédé de fabrication d'un organe chauffant de transfert de métal liquide, organe chauffant, son application et son utilisation.
DE19607560A1 (de) * 1995-03-04 1996-09-12 Veba Kraftwerke Ruhr Verfahren und Vorrichtung zum Fließfähigerhalten von Hochtemperaturschmelzen
WO1997044152A1 (fr) * 1996-05-21 1997-11-27 Didier-Werke Ag Corps composite ceramique et son procede de production
WO1997047412A1 (fr) * 1996-06-07 1997-12-18 Salzgitter Ag Buse de coulee pour installations de coulee de feuillards de faible epaisseur
EP1275452A2 (fr) * 2001-07-13 2003-01-15 Heraeus Electro-Nite International N.V. Buse réfractaire
EP2486156A1 (fr) * 2009-10-08 2012-08-15 Wagstaff, Inc. Quenouille de régulation et système de busette de coulée pour le chauffage des configurations des busettes de coulée distribuant du métal en fusion

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE467241B (sv) * 1990-06-01 1992-06-22 Sandvik Ab Foerfarande foer vaegning av metallinnehaall i ett kaerl i en anlaeggning foer gjutning
DE4108153A1 (de) * 1991-03-14 1992-09-17 Didier Werke Ag Feuerfestes formteil und dessen verwendung
DE4125916A1 (de) * 1991-08-05 1993-02-11 Didier Werke Ag Verfahren zum induktiven aufheizen von keramischen formteilen
US5339329A (en) * 1993-01-25 1994-08-16 Armco Steel Company, L.P. Induction heated meniscus coating vessel
DE9320208U1 (de) * 1993-12-31 1994-03-31 Kalthoff Luftfilter und Filtermedien GmbH, 59379 Selm Mehrschichtiges Filtermaterial
DE4428297A1 (de) * 1994-08-10 1996-02-15 Didier Werke Ag Feuerfeste Düse und Verfahren zum Vergießen einer Metallschmelze aus einem Gefäß
DE19526970C2 (de) * 1995-07-25 2000-11-16 Didier Werke Ag Verfahren zum induktiven Aufheizen eines feuerfesten Formteils
US5902509A (en) * 1995-07-25 1999-05-11 Dider-Werke Ag Method and apparatus for inductively heating a refractory shaped member
DE19651533C2 (de) * 1996-12-11 1999-01-14 Didier Werke Ag Verfahren zur Verhinderung von Ansätzen in metallurgischen Gefäßen
KR100478646B1 (ko) * 1996-12-26 2005-06-08 디지털 비디오 시스템스 인코퍼레이션 섹터어드레스에러감지기
US6425504B1 (en) 1999-06-29 2002-07-30 Iowa State University Research Foundation, Inc. One-piece, composite crucible with integral withdrawal/discharge section
US6358466B1 (en) * 2000-04-17 2002-03-19 Iowa State University Research Foundation, Inc. Thermal sprayed composite melt containment tubular component and method of making same
DE10150032C2 (de) * 2001-07-13 2003-11-20 Heraeus Electro Nite Int Feuerfester Ausguss
US6555801B1 (en) 2002-01-23 2003-04-29 Melrose, Inc. Induction heating coil, device and method of use
US7021084B2 (en) * 2002-12-09 2006-04-04 Certainteed Corporation Insulation shielding for glass fiber making equipment
US7624597B2 (en) * 2002-12-09 2009-12-01 Certainteed Corporation Insulation shielding for glass fiber making equipment
CA2510506A1 (fr) * 2002-12-16 2004-07-15 Irving I. Dardik Systemes et procedes d'influence electromagnetique sur un continuum electroconducteur
CN101610863A (zh) * 2006-12-19 2009-12-23 诺维尔里斯公司 用于输送熔融金属同时为其提供热量的方法和设备
CN103398588B (zh) * 2013-07-26 2015-02-04 朱兴发 电磁感应矿渣熔炉底流式流量可控的电热石墨水口装置
CN106475552B (zh) * 2015-08-31 2018-06-26 鞍钢股份有限公司 一种消除絮流的浸入式水口及使用方法
EP3381587B1 (fr) * 2015-11-27 2020-02-05 Posco Busette de coulée, dispositif de coulée et procédé de coulée
CN107520437A (zh) * 2016-06-21 2017-12-29 宝山钢铁股份有限公司 一种钢包长水口低过热度的温度补偿装置及其方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2779073A (en) * 1952-10-27 1957-01-29 Jr Harry B Osborn Receptacle for molten metal
FR1525154A (fr) * 1966-03-11 1968-05-17 Perfectionnements aux busettes de coulée pour la coulée continue de métal ou d'acier ordinaire à l'état liquide
DE2234127A1 (de) * 1972-07-12 1974-01-24 Sigri Elektrographit Gmbh Vakuum- oder schutzgasofen fuer hohe temperaturen
JPS5820355A (ja) * 1981-07-29 1983-02-05 Hitachi Ltd 細線製造装置
GB2121028A (en) * 1982-05-28 1983-12-14 Western Electric Co Induction furnace for drawing lightguide fibres from preforms
FR2609914A1 (fr) * 1987-01-26 1988-07-29 Aubert & Duval Acieries Busette composite de coulee de metal liquide, notamment pour appareil d'atomisation du metal
EP0328316A2 (fr) * 1988-02-06 1989-08-16 Shinagawa Shirorenga Kabushiki Kaisha Elément de chauffage en oxyde de zirconium

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673228A (en) * 1950-09-15 1954-03-23 Norton Co Induction furnace with high-temperature resistor
US3435992A (en) * 1966-03-11 1969-04-01 Tisdale Co Inc Pouring nozzle for continuous casting liquid metal or ordinary steel
JPS5564857A (en) * 1978-11-07 1980-05-15 Nippon Rutsubo Kk Preheating method for steeping nozzle for continuous casting
FR2532866B1 (fr) * 1982-09-13 1985-06-07 Pont A Mousson Chenal de coulee chauffe par induction
CH665369A5 (de) * 1984-03-07 1988-05-13 Concast Standard Ag Verfahren zur regelung des durchflusses einer metallschmelze beim stranggiessen, und eine vorrichtung zur durchfuehrung des verfahrens.
US4946082A (en) * 1989-07-10 1990-08-07 General Electric Company Transfer tube with in situ heater

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2779073A (en) * 1952-10-27 1957-01-29 Jr Harry B Osborn Receptacle for molten metal
FR1525154A (fr) * 1966-03-11 1968-05-17 Perfectionnements aux busettes de coulée pour la coulée continue de métal ou d'acier ordinaire à l'état liquide
DE2234127A1 (de) * 1972-07-12 1974-01-24 Sigri Elektrographit Gmbh Vakuum- oder schutzgasofen fuer hohe temperaturen
JPS5820355A (ja) * 1981-07-29 1983-02-05 Hitachi Ltd 細線製造装置
GB2121028A (en) * 1982-05-28 1983-12-14 Western Electric Co Induction furnace for drawing lightguide fibres from preforms
FR2609914A1 (fr) * 1987-01-26 1988-07-29 Aubert & Duval Acieries Busette composite de coulee de metal liquide, notamment pour appareil d'atomisation du metal
EP0328316A2 (fr) * 1988-02-06 1989-08-16 Shinagawa Shirorenga Kabushiki Kaisha Elément de chauffage en oxyde de zirconium

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 95 (M-209)[1240], 21. April 1983; & JP,A,58 020 355 (HITACHI SEISAKUSHO K.K.) 05-02-1983; Zusammenfassung. *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992015413A1 (fr) * 1991-03-04 1992-09-17 Mefos Stiftelsen För Metallurgisk Forskning Procede et agencement permettant de purger, a l'aide d'un gaz, un bain de metal en fusion contenu dans un recipient
US5708257A (en) * 1993-02-08 1998-01-13 Seva Heating device for transfer of liquid metal and process for manufacturing the device
FR2701225A1 (fr) * 1993-02-08 1994-08-12 Seva Procédé de fabrication d'un organe chauffant de transfert de métal liquide, organe chauffant, son application et son utilisation.
WO1994017938A1 (fr) * 1993-02-08 1994-08-18 Seva Procede de fabrication d'un organe chauffant de transfert de metal liquide, organe chauffant, son application et son utilisation
DE19607560A1 (de) * 1995-03-04 1996-09-12 Veba Kraftwerke Ruhr Verfahren und Vorrichtung zum Fließfähigerhalten von Hochtemperaturschmelzen
DE19607560C2 (de) * 1995-03-04 2001-05-17 Preussenelektra Kraftwerke Ag Vorrichtung zum Fördern von Hochtemperaturschmelzen
US6156446A (en) * 1996-05-21 2000-12-05 Didier-Werke Ag Ceramic composite structure and process for the production thereof
WO1997044152A1 (fr) * 1996-05-21 1997-11-27 Didier-Werke Ag Corps composite ceramique et son procede de production
AU715986B2 (en) * 1996-06-07 2000-02-10 Mannesmann Aktiengesellschaft Casting nozzle for thin strip casting plants
WO1997047412A1 (fr) * 1996-06-07 1997-12-18 Salzgitter Ag Buse de coulee pour installations de coulee de feuillards de faible epaisseur
CN1072054C (zh) * 1996-06-07 2001-10-03 曼内斯曼股份公司 用于薄钢带浇铸装置的浇铸喷嘴
EP1275452A2 (fr) * 2001-07-13 2003-01-15 Heraeus Electro-Nite International N.V. Buse réfractaire
EP1275452A3 (fr) * 2001-07-13 2003-12-10 Heraeus Electro-Nite International N.V. Buse réfractaire
US7028868B2 (en) 2001-07-13 2006-04-18 Heraeus Electro-Nite International N.V. Refractory nozzle
EP2486156A1 (fr) * 2009-10-08 2012-08-15 Wagstaff, Inc. Quenouille de régulation et système de busette de coulée pour le chauffage des configurations des busettes de coulée distribuant du métal en fusion
EP2486156A4 (fr) * 2009-10-08 2014-07-23 Wagstaff Inc Quenouille de régulation et système de busette de coulée pour le chauffage des configurations des busettes de coulée distribuant du métal en fusion
CN106334788A (zh) * 2009-10-08 2017-01-18 瓦格斯塔夫公司 用于加热金属铸造分配喷嘴构造的控制销和喷嘴系统

Also Published As

Publication number Publication date
ATE94791T1 (de) 1993-10-15
DE3842690C2 (de) 1998-04-30
CA2005657C (fr) 1999-06-15
CA2005657A1 (fr) 1990-06-19
EP0379647A3 (fr) 1991-03-13
DE58905694D1 (de) 1993-10-28
KR900009184A (ko) 1990-07-02
ZA898396B (en) 1990-07-25
CN1043648A (zh) 1990-07-11
BR8906446A (pt) 1990-08-21
JP2884246B2 (ja) 1999-04-19
US5052597A (en) 1991-10-01
DE3842690A1 (de) 1990-06-21
EP0379647B1 (fr) 1993-09-22
JPH02274368A (ja) 1990-11-08
US5054664A (en) 1991-10-08

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