EP2219805A1 - Procédé et dispositif pour uniformiser le processus de solidification d'un métal en fusion produit notamment par coulée continue ou en bande - Google Patents

Procédé et dispositif pour uniformiser le processus de solidification d'un métal en fusion produit notamment par coulée continue ou en bande

Info

Publication number
EP2219805A1
EP2219805A1 EP08853616A EP08853616A EP2219805A1 EP 2219805 A1 EP2219805 A1 EP 2219805A1 EP 08853616 A EP08853616 A EP 08853616A EP 08853616 A EP08853616 A EP 08853616A EP 2219805 A1 EP2219805 A1 EP 2219805A1
Authority
EP
European Patent Office
Prior art keywords
molten metal
strand
electromagnetic
solidification process
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.)
Withdrawn
Application number
EP08853616A
Other languages
German (de)
English (en)
Inventor
Hans-Jürgen SCHEMEIT
Jörg BAUSCH
Jochen Wans
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.)
SMS Siemag AG
Original Assignee
SMS Siemag 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 SMS Siemag AG filed Critical SMS Siemag AG
Publication of EP2219805A1 publication Critical patent/EP2219805A1/fr
Withdrawn legal-status Critical Current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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/122—Accessories for subsequent treating or working cast stock in situ using magnetic fields
    • 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 uniforming the solidification process of a molten metal produced in particular during strand or strip casting, wherein the molten metal is subjected to a particular electromagnetic stirring and wherein a magnetic field is applied to the metal located there upstream of the location of the particular electromagnetic stirring ,
  • the invention also relates to an apparatus for carrying out this method.
  • US 4 933 005 relates to an induction stirring method in which molten metal is stirred electromagnetically with an intensity normally producing in the molten metal turbulence and a static magnetic field is applied at the location of the electromagnetic stirring to the molten metal with an intensity which is at least sufficient to reduce the turbulence at the mentioned location to the smallest dimension.
  • the described method is directed to improving applications of induction stirring where there exists a free surface such as, among other things, stirring in the mold during continuous casting and electromagnetic stirring in pans or other containers, and surface disorders and deformations in the meniscus Minimum be reduced.
  • JP 06182502 A relates to a single metal belt type continuous casting apparatus, which proposes to arrange an electromagnetic brake over the molten metal area to avoid discarding a molten metal area and to obtain a metal strip having a flat surface with no roughness. on the drawing side of the metal strip as well as a tearing off of the molten metal area at this point.
  • warping is produced by the cut-off flow of the molten metal onto the surface of the molten metal portion.
  • an electromagnetic brake is placed over the molten metal area, on the drawing side of the metal strip as well as at the point where the molten metal is cut off.
  • the invention has for its object to improve or further develop the known methods and devices while maintaining the previous advantages in such a way that the disadvantages mentioned are avoided, in particular an optimization of the dimensional accuracy of the strand, a better control of the metallurgical length and a better adaptation of the casting speed is to be achieved.
  • the object is achieved with respect to the method according to the invention in that during the solidification process at least one electromagnetic field is applied to the already externally solidified to the strand areas of the molten metal. It is thus homogenized in a still way by the action of an electron-magnetic field on the melt already solidified externally to the strand, the naturally occurring temperature profile in the still liquid core. Due to the even distribution of energy in the liquid core, there is always the highest possible temperature on the inside of the strand shell. As a result, the thickness growth of the shell is retarded, with the heat flow increasing. Due to the now higher heat dissipation, the casting belt will stiffen faster.
  • the electromagnetic field is applied to the already externally solidified to the strand areas substantially at the bottom of the molten metal. At this point there is usually a greater heat dissipation than on the top and the narrow sides.
  • the position of the electromagnetic stirring is adapted in the casting direction.
  • the object underlying the invention is achieved with respect to the device according to the invention in that a device for applying at least one electromagnetic field is formed during the solidification process to the already externally solidified to the strand areas of the molten metal.
  • the device for applying at least one electromagnetic field is formed on the already externally solidified to the strand areas substantially at the bottom of the molten metal.
  • FIG. 1 is a schematic representation of the temperature profile in the molten metal and the strand shell using the erfindungsgze touch method compared to the prior art
  • Fig. 2 is an enlarged view of the left portion of Fig. 1, and
  • Fig. 3 seen a schematic representation of the solidification distances of the molten metal in the casting direction.
  • the method according to the invention serves to equalize the solidification process of a molten metal which is generally denoted by 10 in the case of strand or strip casting.
  • the molten metal 10 is subjected to an electromagnetic stirring operation here and upstream of the location of the electromagnetic stirring, a magnetic field is applied to the metal located there.
  • at least one electromagnetic field is applied to the regions 11 of the molten metal 10 that have already solidified externally to the strand.
  • the solidified portion 11 of the metal 10 and thus the thickness 0 2 of the strand shell 12 substantially thicker than the solidified portion 13 of the metal 10 in delayed solidification and thus the thickness di of the strand shell 12 in this case, see Figs. 1 and 2.
  • the temperature profile in the molten metal 10 and the strand shell 12 wherein the temperature ⁇ m j st stirrer the temperature with stirring and the temperature ⁇ oh n e Joh r he called the temperature without stirring. It can be seen that the temperature rises significantly more without stirring and finally lent is at a higher level than the temperature with stirring.
  • the electromagnetic field is applied to the already externally solidified to the strand regions 11 substantially on the underside of the molten metal 10. Furthermore, it can be provided that the position of the electromagnetic stirring process in the casting direction is adapted.
  • the solidification distances of the molten metal 10 in the direction indicated by the arrow A casting direction are shown in FIG. It is the solidification distance EN the normal solidification distance and the solidification distance Ev the shortened solidification distance while stirring. The resulting shortening of the solidification path depends on the length of the stirring section.
  • the present invention also relates to a device, not shown in the figures, for carrying out the method, in particular an electromagnetic stirring process on the molten metal 10.
  • the device is designed to apply at least one electromagnetic field during the solidification process to the already outwardly Strand solidified areas 11 of the molten metal 10, preferably on the underside of the molten metal 10. Furthermore, it can be provided that the position of the electromagnetic stirring in the casting direction is formed adaptable. LIST OF REFERENCE NUMBERS

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

L'invention concerne un procédé pour uniformiser le processus de solidification d'un métal en fusion (10) produit notamment par coulée continue ou en bande, le métal liquide en fusion (10) étant soumis à un processus d'agitation notamment électromagnétique, et un champ magnétique étant appliqué, en amont du lieu de l'agitation notamment électromagnétique, au métal présent en cet endroit. Selon l'invention, pendant le processus de solidification, au moins un champ électromagnétique est appliqué aux zones (11) du métal liquide en fusion (10) qui sont déjà extérieurement solidifiées pour former la barre. L'invention concerne en outre un dispositif pour la mise en oevre de ce procédé.
EP08853616A 2007-11-26 2008-11-24 Procédé et dispositif pour uniformiser le processus de solidification d'un métal en fusion produit notamment par coulée continue ou en bande Withdrawn EP2219805A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007059919A DE102007059919A1 (de) 2007-11-26 2007-11-26 Verfahren und Vorrichtung zum Vergleichsmäßigen des Erstarrungsvorganges eines insbesondere beim Strang- oder Bandgießen erzeugten schmelzflüssigen Metalles
PCT/EP2008/009938 WO2009068232A1 (fr) 2007-11-26 2008-11-24 Procédé et dispositif pour uniformiser le processus de solidification d'un métal en fusion produit notamment par coulée continue ou en bande

Publications (1)

Publication Number Publication Date
EP2219805A1 true EP2219805A1 (fr) 2010-08-25

Family

ID=40325732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08853616A Withdrawn EP2219805A1 (fr) 2007-11-26 2008-11-24 Procédé et dispositif pour uniformiser le processus de solidification d'un métal en fusion produit notamment par coulée continue ou en bande

Country Status (12)

Country Link
US (1) US20100282432A1 (fr)
EP (1) EP2219805A1 (fr)
JP (1) JP2011504418A (fr)
KR (1) KR20100080841A (fr)
CN (1) CN101873902A (fr)
CA (1) CA2705222C (fr)
DE (1) DE102007059919A1 (fr)
RU (1) RU2458759C2 (fr)
TW (1) TW200932401A (fr)
UA (1) UA97034C2 (fr)
WO (1) WO2009068232A1 (fr)
ZA (1) ZA201002933B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102513523B (zh) * 2011-12-20 2013-11-27 钢铁研究总院 一种熔点以下完全充型铸造方法
EP2847658B1 (fr) 2012-05-09 2017-06-21 Apple Inc. Dispositif, procédé et interface graphique utilisateur pour fournir une rétroaction tactile associée à des opérations mises en oeuvre dans une interface utilisateur

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3976117A (en) * 1974-11-01 1976-08-24 Erik Allan Olsson Method of and apparatus for converting molten metal into a semi-finished or finished product
JPS5775257A (en) * 1980-10-30 1982-05-11 Nippon Kokan Kk <Nkk> Continuous horizontal casting method for steel
SU980937A1 (ru) * 1981-01-06 1982-12-15 Государственный научно-исследовательский и проектный институт сплавов и обработки цветных металлов "Гипроцветметобработка" Установка непрерывного лить
JPS61108458A (ja) * 1984-11-01 1986-05-27 Kobe Steel Ltd 電磁攪拌装置の制御方法
JPS61249648A (ja) * 1985-04-26 1986-11-06 Sumitomo Metal Ind Ltd 薄鋳片の連続鋳造方法
JPS62176645A (ja) * 1986-01-29 1987-08-03 Nippon Kokan Kk <Nkk> 水平連続鋳造機の電磁撹拌装置
US4933005A (en) 1989-08-21 1990-06-12 Mulcahy Joseph A Magnetic control of molten metal systems
JP2574550B2 (ja) * 1991-04-12 1997-01-22 新日本製鐵株式会社 単ベルト方式連続鋳造装置
JPH06182502A (ja) 1992-12-16 1994-07-05 Nippon Steel Corp 単ベルト式金属帯連続鋳造装置
SE519840C2 (sv) * 2000-06-27 2003-04-15 Abb Ab Förfarande och anordning för kontinuerlig gjutning av metaller
JP4329919B2 (ja) * 2001-03-13 2009-09-09 Ｏｋｉセミコンダクタ株式会社 半導体メモリおよび半導体メモリの駆動方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009068232A1 *

Also Published As

Publication number Publication date
WO2009068232A1 (fr) 2009-06-04
CN101873902A (zh) 2010-10-27
ZA201002933B (en) 2011-03-30
RU2458759C2 (ru) 2012-08-20
US20100282432A1 (en) 2010-11-11
UA97034C2 (ru) 2011-12-26
CA2705222A1 (fr) 2009-06-04
JP2011504418A (ja) 2011-02-10
RU2010126206A (ru) 2012-01-10
TW200932401A (en) 2009-08-01
KR20100080841A (ko) 2010-07-12
CA2705222C (fr) 2013-01-08
DE102007059919A1 (de) 2009-05-28

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