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EP0040383A1 - Procédé et dispositif pour le brassage du métal liquide dans un lingot de coulée continue - Google Patents

Procédé et dispositif pour le brassage du métal liquide dans un lingot de coulée continue Download PDF

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Publication number
EP0040383A1
EP0040383A1 EP81103569A EP81103569A EP0040383A1 EP 0040383 A1 EP0040383 A1 EP 0040383A1 EP 81103569 A EP81103569 A EP 81103569A EP 81103569 A EP81103569 A EP 81103569A EP 0040383 A1 EP0040383 A1 EP 0040383A1
Authority
EP
European Patent Office
Prior art keywords
pouring
mold
melt
jet
magnetic field
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
EP81103569A
Other languages
German (de)
English (en)
Other versions
EP0040383B1 (fr
Inventor
Sten Dipl.-Ing. Kollberg
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
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 ASEA AB filed Critical ASEA AB
Publication of EP0040383A1 publication Critical patent/EP0040383A1/fr
Priority to ES511019A priority Critical patent/ES511019A0/es
Application granted granted Critical
Publication of EP0040383B1 publication Critical patent/EP0040383B1/fr
Expired 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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/114—Treating the molten metal by using agitating or vibrating means
    • B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields

Definitions

  • the invention relates to a method for stirring in a casting strand according to the preamble of claim 1 and an apparatus for performing the method.
  • the walls of the mold consist of copper plates up to 80 mm thick, which makes it very difficult for the magnetic field to penetrate the melt, even at low frequencies.
  • the penetration depth in copper is 50-60 mm at, for example, 1.5 Hz, and thus at least this penetration depth must be overcome by the field before it reaches the melt. The difficulty of interrupting or reducing the penetration of the pouring jet with conventional stirrers in the mold is thus evident.
  • the invention has for its object to develop a method and implementation arrangement by which the difficulties outlined above are eliminated.
  • a method is proposed according to the preamble of claim 1, which according to the invention has the features mentioned in the characterizing part of claim 1.
  • a device for performing the method is characterized by the features mentioned in claim 7.
  • a static magnetic field with a large penetration depth is thus generated and the high speed of the steel in the pouring jet is used when penetrating into the melt in the mold (penetration speed).
  • This penetration speed is of the order of 1 to 1.5 m / sec.
  • the movement of the steel is slowed down by the magnetic field and the pouring jet splinters.
  • the mode of operation is comparable to an eddy current brake.
  • the penetration depth is reduced and the majority of the slag is deposited on the surface and no longer gets stuck on the inside of the strand shell that has already solidified.
  • the static magnetic field can also be generated by one or more permanent magnets.
  • a simple and effective device for "stirring" in the mold is thus obtained, the slag being separated off without getting caught in the blank.
  • the poles (the attack surface of the field) are arranged at an acute angle to the pouring jet in such a way that the pouring jet essentially splits upwards. This prevents slag from being pressed downwards in the casting direction, where it can get caught.
  • more heat is supplied to the surface in the mold, especially on the pouring tube.
  • the momentum exerted by the pouring jet on the melt in the mold is reduced and its effect is spread out from the point of entry into the melt in such a way that the stream of the pouring jet does not hit the narrow side of the blank, as a result of which slag accumulation at the edge of the blank and one Shell erosion can be reduced.
  • the invention therefore makes it possible to also produce steel with a high surface quality in terms of slag purity.
  • FIG. 1 shows how a pouring stream comes out of a pouring box 1 or another melt container via a pouring tube 1.
  • the pouring tube has a downward double drain, and the impulse is directed to the narrow side of the mold 4, where Schlakke settles in the strand shell. There is also a risk of slag penetration further down in the pouring direction (arrows 5).
  • FIG. 2 shows the penetration with pouring jets directed upwards from a pouring tube 8, indicated by the arrows 9.
  • FIG. 3 shows how the pouring jets 10 coming from a pouring tube-11 are directed in the melt and are broken up, whereby slag particles are more easily separated on the surface.
  • the stirring can also be carried out by conventional multiphase, alternating current-supplied stirrers, which are arranged behind the mold in (on) or in the casting direction, in order to obtain the usual stirring effects during continuous casting.
  • the device according to the invention is illustrated in Figures 4 and 5, where a static magnetic field B is shown by a stirrer in the form of an iron core 15 which carries coils 16 'supplied with direct current.
  • the field can be directed inward to the left of the pouring tube 18, which has a double drain, and outward to the right of the pouring tube.
  • the splitting of the pouring jets 16 and 17 takes place in the manner indicated by arrows in FIG. 3, and the slag only settles to a small extent on the narrow sides of the mold and further down in the pouring direction.
  • the device for carrying out the method can be equipped with one or more controllable DC stirrers. It can also contain one or more multi-phase AC stirrers, which are arranged on the mold or in the casting direction behind the mold, with their stirring direction being oriented perpendicularly or in the longitudinal direction to the casting direction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP81103569A 1980-05-19 1981-05-11 Procédé et dispositif pour le brassage du métal liquide dans un lingot de coulée continue Expired EP0040383B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES511019A ES511019A0 (es) 1980-05-19 1982-03-31 Metodo y su correspondiente dispositivo para agitar las regiones no solidificadas de una barra de acero fundido.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8003695A SE436251B (sv) 1980-05-19 1980-05-19 Sett och anordning for omrorning av de icke stelnade partierna av en gjutstreng
SE8003695 1980-05-19

Publications (2)

Publication Number Publication Date
EP0040383A1 true EP0040383A1 (fr) 1981-11-25
EP0040383B1 EP0040383B1 (fr) 1983-10-12

Family

ID=20340983

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103569A Expired EP0040383B1 (fr) 1980-05-19 1981-05-11 Procédé et dispositif pour le brassage du métal liquide dans un lingot de coulée continue

Country Status (7)

Country Link
US (1) US4495984A (fr)
EP (1) EP0040383B1 (fr)
JP (1) JPS5717356A (fr)
BR (1) BR8103058A (fr)
CA (1) CA1178779A (fr)
DE (1) DE3161171D1 (fr)
SE (1) SE436251B (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0092126A1 (fr) * 1982-04-19 1983-10-26 Asea Ab Procédé pour le brassage des zones non-solidifiées dans une billette de coulée
FR2530511A1 (fr) * 1982-07-23 1984-01-27 Pechiney Aluminium Procede de coulee de metaux dans lequel on fait agir des champs magnetiques
FR2530510A1 (fr) * 1982-07-23 1984-01-27 Pechiney Aluminium Procede de coulee electromagnetique de metaux dans lequel on fait agir au moins un champ magnetique different du champ de confinement
EP0265796A1 (fr) * 1986-10-20 1988-05-04 Asea Ab Procédé et dispositif pour la modification de l'écoulement de métal par un champ magnétique dans une lingotière de couleé continue
EP0523837A1 (fr) * 1991-06-05 1993-01-20 Kawasaki Steel Corporation Coulée continue d'acier
EP0550785A1 (fr) * 1992-01-08 1993-07-14 Nkk Corporation Procédé pour coulée continue
US5540672A (en) * 1994-06-13 1996-07-30 Kimberly-Clark Corporation Absorbent article having dual asymmetric leg elastics
WO1996026029A1 (fr) * 1995-02-22 1996-08-29 Asea Brown Boveri Ab Procede et dispositif de coulee dans un moule
EP0820824A1 (fr) * 1996-06-28 1998-01-28 Sms Schloemann-Siemag Aktiengesellschaft Frein électromagnétique d'une lingotière de coulée continue
WO1998012008A1 (fr) * 1996-09-19 1998-03-26 Hoogovens Staal B.V. Machine de coulage continu
WO1999011404A1 (fr) * 1997-09-03 1999-03-11 Abb Ab Procede et dispositif pour la coulee continue ou semi-continue de metal
FR2772294A1 (fr) * 1997-12-17 1999-06-18 Rotelec Sa Equipement de freinage electromagnetique d'un metal en fusion dans une installation de coulee continue
WO2000007754A1 (fr) * 1998-08-04 2000-02-17 Pohang Iron & Steel Co., Ltd. Procede de coulee continue et dispositif afferent
US6332493B1 (en) 1997-04-18 2001-12-25 Abb Ab Device for continuous casting of two strands in parallel

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5853669A (ja) * 1981-09-28 1983-03-30 Hitachi Ltd 内燃機関用燃料噴射ポンプ装置
JPS5976647A (ja) * 1982-10-22 1984-05-01 Kawasaki Steel Corp 連続鋳造における鋳込み溶鋼の撹拌方法および装置
JPS63260652A (ja) * 1987-04-20 1988-10-27 Kawasaki Steel Corp 連続鋳造におけるモ−ルドパウダ−の巻き込み防止方法
US4824078A (en) * 1987-08-19 1989-04-25 Massachusetts Institute Of Technology Magnetic streamlining and flow control in tundishes
US4949778A (en) * 1987-12-16 1990-08-21 Kawasaki Steel Corporation Immersion nozzle for continuous casting
KR930002836B1 (ko) * 1989-04-27 1993-04-10 가와사끼 세이데쓰 가부시까가이샤 정자장을 이용한 강철의 연속 주조방법
CA2011410C (fr) * 1990-03-02 1996-12-31 Mikio Suzuki Methode de coulee continue de l'acier
EP0707909B1 (fr) * 1994-03-29 1999-06-16 Nippon Steel Corporation Procede de commande de flux dans un moule de coulee a l'aide d'un champ magnetique cc
GB2312861B (en) * 1996-05-08 1999-08-04 Keith Richard Whittington Valves
RU2216427C1 (ru) * 2002-04-24 2003-11-20 Открытое акционерное общество "АВИСМА титано-магниевый комбинат" Способ литья металлических слитков и устройство для его осуществления
KR101213559B1 (ko) * 2004-12-22 2012-12-18 겐조 다카하시 교반장치 및 방법과, 그 교반장치를 이용한 교반장치 부착용해로
DE102009029889A1 (de) * 2008-07-15 2010-02-18 Sms Siemag Ag Elektromagnetische Bremseinrichtung an Stranggießkokillen
DE102014105870B4 (de) 2014-04-25 2024-10-10 Thyssenkrupp Ag Verfahren und Vorrichtung zum Dünnbrammen-Stranggießen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA531772A (fr) * 1956-10-16 Continuous Metalcast Co. Methode et appareil pour le moulage continu de metal
CH500031A (de) * 1969-12-12 1970-12-15 Aeg Elotherm Gmbh Anordnung zur Steuerung des Erstarrungsvorganges bei der Herstellung von stranggegossenen Profilen
DE2141868A1 (de) * 1970-08-20 1972-02-24 Republic Steel Corp , Cleveland, Ohio (V St A ) Verfahren und Vorrichtung zur ge steuerten Erstarrung von gegossenen Strukturen
FR2187465A1 (en) * 1972-06-08 1974-01-18 Siderurgie Fse Inst Rech Continuously casting metal melts - with reduced amount of inclusions, has molten metal introduced below melt surface
DE2720391A1 (de) * 1976-05-21 1977-12-01 Asea Ab Anordnung beim stranggiessen
DE2731238A1 (de) * 1976-07-13 1978-01-26 Siderurgie Fse Inst Rech Verfahren und vorrichtung zum kontinuierlichen vergiessen insbesondere von stahl unter einwirkung eines magnetischen wanderfeldes

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3153820A (en) * 1961-10-09 1964-10-27 Charles B Criner Apparatus for improving metal structure
US3842895A (en) * 1972-01-10 1974-10-22 Massachusetts Inst Technology Metal alloy casting process to reduce microsegregation and macrosegregation in casting
US4200137A (en) * 1975-04-22 1980-04-29 Republic Steel Corporation Process and apparatus for the continuous casting of metal using electromagnetic stirring
FR2391015A1 (fr) * 1977-05-18 1978-12-15 Siderurgie Fse Inst Rech Perfectionnement au procede de coulee continue centrifuge de produits metalliques et dispositif de mise en oeuvre
JPS5419377A (en) * 1977-07-14 1979-02-14 Sharp Corp Production of semiconductor device
US4158380A (en) * 1978-02-27 1979-06-19 Sumitomo Metal Industries Limited Continuously casting machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA531772A (fr) * 1956-10-16 Continuous Metalcast Co. Methode et appareil pour le moulage continu de metal
CH500031A (de) * 1969-12-12 1970-12-15 Aeg Elotherm Gmbh Anordnung zur Steuerung des Erstarrungsvorganges bei der Herstellung von stranggegossenen Profilen
DE2141868A1 (de) * 1970-08-20 1972-02-24 Republic Steel Corp , Cleveland, Ohio (V St A ) Verfahren und Vorrichtung zur ge steuerten Erstarrung von gegossenen Strukturen
FR2104863A1 (fr) * 1970-08-20 1972-04-21 Republic Steel Corp
FR2187465A1 (en) * 1972-06-08 1974-01-18 Siderurgie Fse Inst Rech Continuously casting metal melts - with reduced amount of inclusions, has molten metal introduced below melt surface
DE2720391A1 (de) * 1976-05-21 1977-12-01 Asea Ab Anordnung beim stranggiessen
DE2731238A1 (de) * 1976-07-13 1978-01-26 Siderurgie Fse Inst Rech Verfahren und vorrichtung zum kontinuierlichen vergiessen insbesondere von stahl unter einwirkung eines magnetischen wanderfeldes
FR2358222A1 (fr) * 1976-07-13 1978-02-10 Siderurgie Fse Inst Rech Nouveaux procede et dispositif pour le brassage electromagnetique de produits metalliques coules en continu

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0092126A1 (fr) * 1982-04-19 1983-10-26 Asea Ab Procédé pour le brassage des zones non-solidifiées dans une billette de coulée
FR2530511A1 (fr) * 1982-07-23 1984-01-27 Pechiney Aluminium Procede de coulee de metaux dans lequel on fait agir des champs magnetiques
FR2530510A1 (fr) * 1982-07-23 1984-01-27 Pechiney Aluminium Procede de coulee electromagnetique de metaux dans lequel on fait agir au moins un champ magnetique different du champ de confinement
EP0100289A3 (en) * 1982-07-23 1984-04-11 Aluminium Pechiney Process for the electromagnetical casting of metals using at least one magnetical field differing from another bordering magnetical field
EP0100290A3 (en) * 1982-07-23 1984-04-11 Aluminium Pechiney Process for casting metals using magnetic fields
EP0265796A1 (fr) * 1986-10-20 1988-05-04 Asea Ab Procédé et dispositif pour la modification de l'écoulement de métal par un champ magnétique dans une lingotière de couleé continue
EP0523837A1 (fr) * 1991-06-05 1993-01-20 Kawasaki Steel Corporation Coulée continue d'acier
EP0550785A1 (fr) * 1992-01-08 1993-07-14 Nkk Corporation Procédé pour coulée continue
US5540672A (en) * 1994-06-13 1996-07-30 Kimberly-Clark Corporation Absorbent article having dual asymmetric leg elastics
WO1996026029A1 (fr) * 1995-02-22 1996-08-29 Asea Brown Boveri Ab Procede et dispositif de coulee dans un moule
EP0820824A1 (fr) * 1996-06-28 1998-01-28 Sms Schloemann-Siemag Aktiengesellschaft Frein électromagnétique d'une lingotière de coulée continue
WO1998012008A1 (fr) * 1996-09-19 1998-03-26 Hoogovens Staal B.V. Machine de coulage continu
EP0832704A1 (fr) 1996-09-19 1998-04-01 Hoogovens Staal B.V. Installation de coulée continue
AU711675B2 (en) * 1996-09-19 1999-10-21 Corus Staal B.V. Continuous casting machine
US6460606B2 (en) 1996-09-19 2002-10-08 Corus Staal Bv Continuous casting machine
US6332493B1 (en) 1997-04-18 2001-12-25 Abb Ab Device for continuous casting of two strands in parallel
WO1999011404A1 (fr) * 1997-09-03 1999-03-11 Abb Ab Procede et dispositif pour la coulee continue ou semi-continue de metal
FR2772294A1 (fr) * 1997-12-17 1999-06-18 Rotelec Sa Equipement de freinage electromagnetique d'un metal en fusion dans une installation de coulee continue
WO1999030856A1 (fr) * 1997-12-17 1999-06-24 Rotelec S.A. Equipement de freinage electromagnetique d'un metal en fusion dans une installation de coulee continue
CN1112264C (zh) * 1997-12-17 2003-06-25 罗泰莱克公司 在连续铸造产品中用电磁方式制动熔融金属的装置和方法
WO2000007754A1 (fr) * 1998-08-04 2000-02-17 Pohang Iron & Steel Co., Ltd. Procede de coulee continue et dispositif afferent
US6315029B1 (en) 1998-08-04 2001-11-13 Pohang Iron & Steel Co., Ltd. Continuous casting method, and device therefor
CN1096902C (zh) * 1998-08-04 2002-12-25 浦项综合制铁株式会社 连铸方法及其设备

Also Published As

Publication number Publication date
CA1178779A (fr) 1984-12-04
EP0040383B1 (fr) 1983-10-12
SE8003695L (sv) 1981-11-20
BR8103058A (pt) 1982-02-09
DE3161171D1 (en) 1983-11-17
JPS5717356A (en) 1982-01-29
SE436251B (sv) 1984-11-26
US4495984A (en) 1985-01-29
JPH0220349B2 (fr) 1990-05-09

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