EP1239981B1 - Procede de coulee continue verticale des metaux utilisant des champs electromagnetiques et installation de coulee pour sa mise en oeuvre - Google Patents

Procede de coulee continue verticale des metaux utilisant des champs electromagnetiques et installation de coulee pour sa mise en oeuvre Download PDF

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Publication number
EP1239981B1
EP1239981B1 EP00981421A EP00981421A EP1239981B1 EP 1239981 B1 EP1239981 B1 EP 1239981B1 EP 00981421 A EP00981421 A EP 00981421A EP 00981421 A EP00981421 A EP 00981421A EP 1239981 B1 EP1239981 B1 EP 1239981B1
Authority
EP
European Patent Office
Prior art keywords
meniscus
casting
magnetic field
mold
mould
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
EP00981421A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1239981A1 (fr
Inventor
Jacqueline Etay
Marcel Garnier
Yves Delannoy
Jean-Marie Galpin
Jean-Yves Lamant
Pascal Gardin
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.)
USINOR SA
Original Assignee
USINOR SA
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Publication date
Application filed by USINOR SA filed Critical USINOR SA
Publication of EP1239981A1 publication Critical patent/EP1239981A1/fr
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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 also relates to an installation for vertical continuous casting of metals comprising an ingot mold with cooled assembled flat plates, two of which large facing each other to define a casting space as defined in claim 3 and attached appended.
  • Such a measure is complex to implement both in terms electromagnetic due to the inevitable electrodynamic instabilities linked to nature liquid of the final armature (the liquid metal within the ingot mold) on which one acts by the intermediate susceptor that is the mold itself. It is also complex by the makes the ingot mold above all a bottomless vertical crystallizer whose tightness lateral must always be perfectly secured, the format of which must be geometrically stable (avoid the phenomena of swelling of the large faces) and whose circuit of cooling is rigorously optimized. Such segmentation of the mold, large side faces in particular, would mean having to reconsider deeply a already proven design of the mold on the technological and on the plan functional.
  • the device according to the invention shown diagrammatically in FIGS. 2 and 3, includes such a coil 17 connected to an alternating current generator (not shown) operating at a frequency belonging to the above-mentioned range.
  • the electromagnetic field of coil 17 generates induced currents in liquid steel 7, especially at the meniscus 12.
  • the interactions between field and currents then generate an electromagnetic force whose effect at the level of wall of the mold is a centripetal effect 18 which digs the periphery of the meniscus and whose the effect within the liquid metal 7 is a stirring effect which causes swelling at the center of the meniscus 12.
  • a pronounced dome-shaped surface 12 is thus obtained for liquid steel 7 in the mold 1.
  • the liquid cover slag 14 has much better possibilities of infiltrating between the solidified skin 9 and the walls 2, 3, 4, 5 of the mold, this which improves lubrication and therefore allows higher casting speeds than in the conventional practice.
  • the level at which solidification of the liquid steel 7 begins in the ingot mold is also better controlled and stable, which contributes to improving the surface condition of the slab 10.
  • the nozzles 8 usually used in continuous casting of steel slabs have side vents 24, 24 'through which the molten steel enters the mold 1, which are oriented towards the small walls 4, 5 of the mold.
  • liquid steel 7 therefore has the main component of its perpendicular speed to the transverse continuous magnetic field. This also produces a braking effect of this component, with the advantageous consequence that the jets steel supply outlet from nozzle 8 descend less deeply into the well liquid.
  • the polar endings of the parts 21, 22 are preferably formed by an assembly of vertically oriented metal sheets separated by sheets of insulating material, in a manner comparable to what is done to constitute the electrical transformer cores. If these poles are massive, the magnetic field alternating axial generated by the coil 17 can develop induced currents there which heat by Joule effect, which could make it necessary to cool them.
  • a laminated structure on the contrary, naturally ensures their thermal maintenance at low temperature without the need for a forced cooling circuit. Of more, these induced currents can disturb the operation of the current generator continuous supplying the coils 19, 20. It may however be sufficient to limit this laminated construction at the poles 21, 22 and to keep a cylinder head 23 made of solid material which, as already said, provides the whole solidity and rigidity required.
  • the distance between the large walls 2, 3 of the ingot mold is most often in the range of 200 - 300 mm, or even less on installations pouring thin slabs. It is therefore possible to create without particular difficulties a magnetic field whose effects are felt from a large wall 2, 3 to another, and which acts also in the vicinity of the small walls 4, 5 if, as shown, the pole pieces 21, 22 extend over the entire width of the mold 1. On the other hand, create a field magnetic which would cross the mold 1 from a small wall 4, 5 to the other would be more difficult and generally ineffective because these small walls 4, 5 are 1 to 2 m apart or more, so very distant from each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
EP00981421A 1999-11-25 2000-11-17 Procede de coulee continue verticale des metaux utilisant des champs electromagnetiques et installation de coulee pour sa mise en oeuvre Expired - Lifetime EP1239981B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9914816A FR2801523B1 (fr) 1999-11-25 1999-11-25 Procede de coulee continue des metaux du type utilisant des champs electromagnetiques, et lingotiere et installation de coulee pour sa mise en oeuvre
FR9914816 1999-11-25
PCT/FR2000/003191 WO2001038022A1 (fr) 1999-11-25 2000-11-17 Procede de coulee continue verticale des metaux utilisant des champs electromagnetiques et installation de coulee pour sa mise en oeuvre

Publications (2)

Publication Number Publication Date
EP1239981A1 EP1239981A1 (fr) 2002-09-18
EP1239981B1 true EP1239981B1 (fr) 2003-07-16

Family

ID=9552514

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00981421A Expired - Lifetime EP1239981B1 (fr) 1999-11-25 2000-11-17 Procede de coulee continue verticale des metaux utilisant des champs electromagnetiques et installation de coulee pour sa mise en oeuvre

Country Status (13)

Country Link
US (1) US6619377B1 (zh)
EP (1) EP1239981B1 (zh)
JP (2) JP3904226B2 (zh)
KR (1) KR100536174B1 (zh)
CN (1) CN1198695C (zh)
AT (1) ATE245068T1 (zh)
AU (1) AU778670C (zh)
BR (1) BR0015748A (zh)
CA (1) CA2391235C (zh)
DE (1) DE60003945T2 (zh)
FR (1) FR2801523B1 (zh)
RU (1) RU2247003C2 (zh)
WO (1) WO2001038022A1 (zh)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2825039B1 (fr) * 2001-05-23 2003-08-29 Usinor Lingotiere de coulee continue des metaux comportant au niveau de sa tete, des moyens de generation de champs electromagnetiques
DE10237188A1 (de) * 2002-08-14 2004-02-26 Sms Demag Ag Elektromagnetische Bremsvorrichtung für in eine Stranggießkokille einströmende Stahlschmelze
EP1833628A4 (en) * 2004-12-23 2009-03-18 Res Inst Ind Science & Tech DEVICE FOR CONTINUOUSLY OUTSTANDING A MAGNESIUM STREAM OR A MAGNESIUM FRAME USING AN ELECTROMAGNETIC FIELD AND METHOD THEREFOR
WO2007087378A2 (en) * 2006-01-25 2007-08-02 Energetics Technologies, L.L.C. Method of continuous casting in which axial porosity is eliminated and the crystalline structure is refined
JP2009535216A (ja) * 2006-04-25 2009-10-01 アーベーベー・アーベー 攪拌装置
FR2928641B1 (fr) * 2008-03-14 2010-03-26 Centre Nat Rech Scient Procede de purification de silicium pour applications photovoltaiques
JP5035115B2 (ja) * 2008-05-28 2012-09-26 住友金属工業株式会社 鋼の連続鋳造方法
WO2012157214A1 (ja) * 2011-05-17 2012-11-22 パナソニック株式会社 鋳型、鋳造装置及び鋳造棒の製造方法
CN102310174B (zh) * 2011-09-07 2013-06-05 中国科学院金属研究所 一种改善金属凝固缺陷、细化凝固组织的方法和装置
KR101643174B1 (ko) * 2014-10-13 2016-07-27 한국생산기술연구원 고순도 경량 금속 소재 박슬라브 연속주조용 냉도가니
US10280062B2 (en) 2016-10-20 2019-05-07 Fres-Co System Usa, Inc. Pierce at first use dispensing tap for flexible bag with filling gland and bag including the same
IT201800006751A1 (it) * 2018-06-28 2019-12-28 Apparato e metodo di controllo della colata continua
JP7069424B2 (ja) * 2019-01-30 2022-05-17 アーベーベー・シュバイツ・アーゲー 連続鋳造における流速の制御
CN111730036B (zh) * 2020-07-30 2020-11-06 东北大学 一种同水平电磁铸造装置及方法
CN115351270B (zh) * 2022-06-28 2024-06-11 东北大学 一种中间包底部电磁旋流水口设备的固定装置
CN115194107B (zh) * 2022-07-13 2023-05-16 沈阳工程学院 控制金属液流动的多段位独立可调复合磁场装置及方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US32529A (en) * 1861-06-11 perry
FR2530511B1 (fr) * 1982-07-23 1985-07-05 Cegedur Procede de coulee de metaux dans lequel on fait agir des champs magnetiques
FR2530510B1 (fr) * 1982-07-23 1985-07-05 Cegedur Procede de coulee electromagnetique de metaux dans lequel on fait agir au moins un champ magnetique different du champ de confinement
DE3517733A1 (de) * 1985-05-17 1986-11-20 Theodor Prof. Dr.-Ing. 8022 Grünwald Rummel Verfahren bzw. einrichtung zum stranggiessen insbesondere von schwermetallen mittels den strangquerschnitt formenden magnetfeldern
US5238051A (en) * 1990-02-23 1993-08-24 Nippon Steel Corp. Continuous casting apparatus
JPH0584551A (ja) * 1991-09-11 1993-04-06 Kawasaki Steel Corp 静磁場を用いる鋼の連続鋳造方法
JPH07148555A (ja) * 1993-11-30 1995-06-13 Nippon Steel Corp 溶融金属の連続鋳造装置
JP3491099B2 (ja) * 1994-05-23 2004-01-26 Ｊｆｅスチール株式会社 静磁場を用いた鋼の連続鋳造方法
JPH0819842A (ja) * 1994-07-04 1996-01-23 Sumitomo Metal Ind Ltd 連続鋳造方法および装置
JP3310884B2 (ja) * 1996-09-30 2002-08-05 株式会社神戸製鋼所 鋼の電磁界鋳造方法
ZA987528B (en) * 1997-11-18 1999-02-23 Inland Steel Co Electromagnetic meniscus control in continuous casting
JP3525717B2 (ja) * 1998-01-29 2004-05-10 Ｊｆｅスチール株式会社 電磁力を応用した溶融金属の連続鋳造方法

Also Published As

Publication number Publication date
KR20020063897A (ko) 2002-08-05
AU778670C (en) 2005-11-17
FR2801523B1 (fr) 2001-12-28
BR0015748A (pt) 2002-07-16
KR100536174B1 (ko) 2005-12-12
JP2007000936A (ja) 2007-01-11
AU778670B2 (en) 2004-12-16
DE60003945D1 (de) 2003-08-21
ATE245068T1 (de) 2003-08-15
CA2391235C (fr) 2008-10-14
JP3904226B2 (ja) 2007-04-11
DE60003945T2 (de) 2004-06-03
AU1867601A (en) 2001-06-04
EP1239981A1 (fr) 2002-09-18
CA2391235A1 (fr) 2001-05-31
RU2002116779A (ru) 2004-02-20
CN1198695C (zh) 2005-04-27
WO2001038022A1 (fr) 2001-05-31
FR2801523A1 (fr) 2001-06-01
RU2247003C2 (ru) 2005-02-27
JP2003514669A (ja) 2003-04-22
JP4824502B2 (ja) 2011-11-30
US6619377B1 (en) 2003-09-16
CN1399584A (zh) 2003-02-26

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