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EP0511465B2 - Elektromagnetische Rühreinrichtung für das Stranggiessen - Google Patents

Elektromagnetische Rühreinrichtung für das Stranggiessen Download PDF

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Publication number
EP0511465B2
EP0511465B2 EP92102888A EP92102888A EP0511465B2 EP 0511465 B2 EP0511465 B2 EP 0511465B2 EP 92102888 A EP92102888 A EP 92102888A EP 92102888 A EP92102888 A EP 92102888A EP 0511465 B2 EP0511465 B2 EP 0511465B2
Authority
EP
European Patent Office
Prior art keywords
tube
ingot mould
radiation
inductor
mould tube
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
EP92102888A
Other languages
English (en)
French (fr)
Other versions
EP0511465A3 (en
EP0511465A2 (de
EP0511465B1 (de
Inventor
Norbert Kaell
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
Paul Wurth SA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19731286&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0511465(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Paul Wurth SA filed Critical Paul Wurth SA
Priority to EP97100231A priority Critical patent/EP0778098B1/de
Publication of EP0511465A2 publication Critical patent/EP0511465A2/de
Publication of EP0511465A3 publication Critical patent/EP0511465A3/fr
Application granted granted Critical
Publication of EP0511465B1 publication Critical patent/EP0511465B1/de
Publication of EP0511465B2 publication Critical patent/EP0511465B2/de
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
    • 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 present invention relates to an ingot mold with electromagnetic stirring device of an installation continuous casting comprising a mold tube vertical receiving molten metal, as well as a electromagnetic inductor to generate movement gyration of molten metal in the mold tube around the axis thereof.
  • a device of this kind is known from the document EP-A-0093068.
  • the open casting process or in free jet is simply to let the liquid metal in the mold tube through a calibrated nozzle with more or less constant flow.
  • the level of the steel meniscus in the mold is controlled by adapting the extraction speed as a function of the extraction and according to the indication of an installation of level measurement based on a radioactive principle.
  • This process is basically used for casting medium quality steel billets, because the casting is performed in contact with air.
  • a process is used airtight casting which is casting with submerged nozzles and powders.
  • liquid steel is introduced into the mold tube at through a nozzle which plunges into the liquid metal which is in the mold tube.
  • Contact with air and oxygen is prevented by a layer of powder which covers the surface of the metal at the pouring meniscus.
  • the casting is done at extraction speed constant.
  • the level of the ingot mold steel is controlled by a buffer or a distributor drawer.
  • Document DE-A-3819493 describes an ingot mold with electromagnetic stirring device which would allow the implementation of the two casting methods keep on going.
  • This ingot mold includes an inductor which is adjusted like a piston in a separate compartment of the ingot mold cooling box, so to be essentially movable in height by the pressurized coolant.
  • the ingot mold described does not include means for detecting the level of molten metal in the mold tube.
  • GB-A-2021459 describes an ingot mold with an essentially movable external inductor horizontally with respect to a vertical ingot mold tube.
  • Document EP-A-0063072 describes an ingot mold with a fixed inductor mounted in a cooling box surrounding the mold tube.
  • a system for detecting the level of molten metal in the tube ingot mold includes a radiation source arranged outside the inductor.
  • a notch in the inductor lets the radiation through avoiding as well as the inductor does not constitute a screen for the radiation.
  • Document EP-A-0157255 describes an ingot mold with a fixed inductor.
  • This inductor includes coils having housings for receiving a radiation source or a detector forming a system level detection.
  • the problem underlying the present invention is to develop a simple ingot mold including a height-adjustable inductor and means for detect the level of molten metal in the tube mold.
  • the tube of ingot mold is surrounded by a first steel tube coaxial which, in turn, is arranged inside a second coaxial tube around which the inductor is mounted, while the annular spaces between the two tubes and between the mold tube and the first tube are crossed by a coolant.
  • the ingot mold is equipped with a level detector steel in the ingot mold tube, which consists of a cylindrical radiation source mounted inside the second tube and associated with a scintillometer mounted on the opposite side of said second tube.
  • the radiation source is preferably located inside a cylindrical protective jacket in lead provided with a radial and movable slot around the axis of said source between an angular position in which the slot is directed on the mold tube and an angular garage position in which the slot is directed on a cylindrical lead block extending along said shirt.
  • the ingot mold which consists of the ingot mold tube, of the inductor and the two tubes can be integral a set of underlying and removable rollers in block with this one.
  • Figures 1 and 2 show an ingot mold 10 contained in a metal case 12.
  • the ingot mold 10 comprises basically a vertical ingot mold tube 14 containing liquid metal 16 which is spilled from a tun-dish not shown.
  • the molten metal 16 solidifies gradually in this mold tube and the blank metallic is extracted there by passing through a set 18 of underlying guide and forming rollers metal blanks.
  • the set of rollers 18 is integral of the mold 10 and can be disassembled as a block with it.
  • the ingot mold tube 14 which is generally consists of a copper tube, is surrounded by a tube coaxial steel 20 which forms with the mold tube a annular cylindrical space 22 in which a coolant for the ingot mold tube 14.
  • a other cylindrical space 24 is delimited around the tube 20 by a second tube 26. This space 24 is closed towards the bottom by an annular plate 28 fixed to the two tubes 20 and 26.
  • the cooling water enters the circuit by 30 and then in the annular gap 22 between the tube ingot mold 14 and tube 20.
  • This space is very thin to ensure rapid circulation and cooling effective in the ingot mold tube 14.
  • the water from cooling thus goes up along the mold tube to overflow through the top of tube 20 and fill the annular space 24.
  • the cooling water leaves this space 24 by overflow in a pipe vertical not shown arranged along the inner wall of tube 26 and then through a pipe Release.
  • the electromagnetic device 32 can be made up of one or more inductors.
  • the inductor 32 is not fixed, but can be moved vertically between an elevated position according to figure 1 for casting in free jet and a lower position according to FIG. 2 for casting with submerged nozzle.
  • the means of displacement of the inductor 32 can be constituted by any suitable means known per se, for example three vertical threaded rods which support the inductor 32 and which can be rotated synchronously by a suitable motor.
  • inductor 32 slides vertically in several, for example three guide rods 50, the operation vertical achieved by a crane not shown.
  • the rods 50 are designed to position the inductor 32 in three vertical positions different defined by three radial perforations upper 52 and two lower notches 54.
  • the inductor 32 rests on the bottom of the mold 10 and can be keyed by the perforation lower 52. If the embodiment illustrated allows a third intermediate position, not shown, it is, of course, possible to predict than two or plan more.
  • Inductor 32 has a circuit separate cooling, which is symbolized by arrows 34 and 36 for the inlet and outlet of water from cooling.
  • Another feature of the present invention is monitoring the meniscus level of the liquid metal in the ingot mold tube 14.
  • This monitoring is performed using a radiation source 38.
  • a radiation source 38 by example a cobalt source, arranged in the upper region of annular space 24 and that is associated with a scintillometer 40 arranged on the opposite side of the ingot mold tube 14.
  • this radiation source 38 is found inside a cylindrical protective jacket 42, as shown in more detail and enlarged in FIG. 3.
  • This protective jacket 42 which can, for example, being made of lead, has a vertical slot 44 for the passage of the rays.
  • This shirt protection 42 can be rotated around a vertical axis between an operating position shown in FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • General Induction Heating (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Furnace Details (AREA)

Claims (8)

  1. Kokille einer Stranggussanlage
    bestehend aus
    einer Kokillenröhre (14), die das geschmolzenen Metall (16) aufnimmt,
    einer äusseren Röhre (26), die die Kokillenröhre (14) umgibt,
    einem Kühlkreislauf, der von der äusseren Röhre (26) und der Kokillenröhre (14) abgegrenzt wird,
    einem elektromagnetischen Induktor (32) zur Erzeugung einer Drehbewegung des geschmolzenen Metalls (16) in der Kokillenröhre (14) um deren Achse, wobei der elektromagnetische Induktor (32) im Verhältnis zur Kokillenröhre (14) senkrecht verstellbar ist, und
    einem getrennten Kühlkreislauf (34, 36) für den elektromagnetischen Induktor (32)
    gekennzeichnet durch
    einen Füllstandsmesser zur Ermittlung des Füllstandes des Metalls in der Kokillenröhre (14);
    wobei der Füllstandsmesser eine Strahlenquelle (38) umfasst, die zwischen der äusseren Röhre (26) und der Kokillenröhre (14) angebracht ist, und
    wobei der elektromagnetische Induktor (32) mit seinem Kühlkreislauf (34, 36) eine Rühreinrichtung bildet, welche außerhalb der äusseren Röhre (26) so angebracht ist, daß sie mittels einer Verstelleinheit am Stück an der äusseren Röhre (26) entlang senkrecht verstellbar ist.
  2. Stranggußkokille nach Anspruch 1, dadurch gekennzeichnet, daß der Füllstandsmesser ein Szintillometer (40) umfasst, wobei die Strahlenquelle (38) auf der einen Seite der Kokillenröhre (14) und das Szintillometer (40) auf der gegenüberliegenden Seite der Kokillenröhre (14) angebracht ist.
  3. Stranggußkokille nach Anspruch 1 oder 2, dadurch gekennzeichnet,
    daß eine innere Röhre (20) die Kokillenröhre (14) umgibt und mit dieser zusammen einen ersten ringförmigen Raum (22) bildet, der einen ersten Abschnitt für den Durchfluß einer Kühlflüssigkeit bestimmt,
    daß die äussere Röhre (26) die innere Röhre (20) umgibt und mit dieser zusammen einen zweiten ringförmigen Raum (24) bildet, der einen zweiten Abschnitt für den Durchfluß einer Kühlflüssigkeit bestimmt,
    daß der erste Durchflußabschnitt bedeutent kleiner ist als der zweite Durchflußabschnitt, und
    daß die Strahlenquelle (38) innerhalb des zweiten ringförmigen Raums (24) angebracht ist.
  4. Kokille nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß die Strahlenquelle (38) mit einem zylindrischen Schutzmantel (42) ausgestattet ist, der die radioaktive Strahlung absorbiert, und
    daß der Schutzmantel (42) einen Längsspalt (44) aufweist, der die von der Strahlenquelle (38) abgegebene Energie austreten lässt.
  5. Kokille nach Anspruch 4, dadurch gekennzeichnet,
    daß der zylindrische Schutzmantel (42) in dem Kühlkreislauf so montiert ist,
    daß er zwischen einer ersten Stellung, in der der Längsspalt (44) auf die Kokillenröhre (14) gerichtet ist, und einer zweiten Stellung, in der der Längsspalt (44) auf einen Absorptionsblock (46) gerichtet ist, um die Längsachse der Strahlungsquelle gedreht werden kann.
  6. Kokille nach einem der Ansprüche 1 bis 5, gekennzeichnet durch senkrechte Gewindestäbe, die den Induktor tragen.
  7. Kokille nach einem der Ansprüche 1 bis 5, gekennzeichnet durch senkrechte Führungsstäbe (50) für den Induktor.
  8. Kokille nach Anspruch 7, gekennzeichnet durch Vorrichtungen zum Tragen des Induktors (32) in verschiedenen, vorher festgelegten senkrechten Stellungen auf den senkrechten Führungsstäben (50).
EP92102888A 1991-04-03 1992-02-21 Elektromagnetische Rühreinrichtung für das Stranggiessen Expired - Lifetime EP0511465B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP97100231A EP0778098B1 (de) 1991-04-03 1992-02-21 Elektromagnetische Rühreinrichtung für das Stranggiessen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU87914 1991-04-03
LU87914A LU87914A1 (fr) 1991-04-03 1991-04-03 Dispositif de brassage electromagnetique en lingotiere

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP97100231A Division EP0778098B1 (de) 1991-04-03 1992-02-21 Elektromagnetische Rühreinrichtung für das Stranggiessen
EP97100231.6 Division-Into 1997-01-09

Publications (4)

Publication Number Publication Date
EP0511465A2 EP0511465A2 (de) 1992-11-04
EP0511465A3 EP0511465A3 (en) 1993-04-21
EP0511465B1 EP0511465B1 (de) 1997-09-24
EP0511465B2 true EP0511465B2 (de) 2003-12-03

Family

ID=19731286

Family Applications (2)

Application Number Title Priority Date Filing Date
EP97100231A Expired - Lifetime EP0778098B1 (de) 1991-04-03 1992-02-21 Elektromagnetische Rühreinrichtung für das Stranggiessen
EP92102888A Expired - Lifetime EP0511465B2 (de) 1991-04-03 1992-02-21 Elektromagnetische Rühreinrichtung für das Stranggiessen

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP97100231A Expired - Lifetime EP0778098B1 (de) 1991-04-03 1992-02-21 Elektromagnetische Rühreinrichtung für das Stranggiessen

Country Status (6)

Country Link
EP (2) EP0778098B1 (de)
AT (2) ATE171656T1 (de)
CA (1) CA2040830C (de)
DE (2) DE69222348T3 (de)
ES (2) ES2123347T3 (de)
LU (1) LU87914A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1288900B1 (it) * 1996-05-13 1998-09-25 Danieli Off Mecc Procedimento di colata continua con campo magnetico pulsante e relativo dispositivo
FR2893868B1 (fr) * 2005-11-28 2008-01-04 Rotelec Sa Reglage du mode de brassage electromagnetique sur la hauteur d'une lingotiere de coulee continue
CN105964988B (zh) * 2016-03-19 2019-04-02 上海大学 移动型脉冲磁致振荡细化金属凝固组织方法
CN109746404B (zh) * 2019-03-08 2021-05-18 石家庄爱迪尔电气有限公司 一种便于维护和加工的电磁搅拌铸造设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1086276A (en) † 1964-08-22 1967-10-04 Schloemann Ag Improvements in means for measuring the fullness of oscillating chill-moulds containing molten material
DE2921280A1 (de) † 1978-05-26 1979-11-29 Arbed Einrichtung zum stranggiessen von metallen unter elektromagnetischem ruehren
JPS6360056A (ja) † 1986-08-29 1988-03-16 Nisshin Steel Co Ltd Ｔｉ含有ステンレス鋼の連続鋳造方法および連続鋳造用鋳型
DE3730300C2 (de) † 1987-09-10 1989-08-10 Aeg-Elotherm Gmbh, 5630 Remscheid, De
JPH0351954U (de) † 1989-09-20 1991-05-21

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT185038B (de) * 1951-03-16 1956-03-26 Boehler & Co Ag Geb Verfahren zur Kühlung von Stranggußkokillen
US3153820A (en) * 1961-10-09 1964-10-27 Charles B Criner Apparatus for improving metal structure
JPS5719141A (en) * 1980-07-09 1982-02-01 Mitsubishi Heavy Ind Ltd Electromagnetic stirring device of continuous casting facility
FR2502996A1 (fr) * 1981-04-03 1982-10-08 Rotelec Sa Inducteur electromagnetique a champ tournant et equipement de lingotiere de coulee continue des metaux pour son utilisation
LU84103A1 (fr) 1982-04-22 1984-03-02 Arbed Systeme de decrassage automatique de busettes pendant la coulee de metaux
SE441502B (sv) * 1984-03-19 1985-10-14 Asea Ab Nivametare vid kokiller for strenggjutning
IT1181219B (it) * 1984-09-17 1987-09-23 Danieli Off Mecc Colata continua con agitatori polifunzionali
DE3819493A1 (de) * 1988-06-08 1989-12-14 Voest Alpine Ind Anlagen Knueppel- bzw. vorblock-stranggiesskokille
GB9003196D0 (en) * 1990-02-13 1990-04-11 Davy Mckee Sheffield Continuous casting

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1086276A (en) † 1964-08-22 1967-10-04 Schloemann Ag Improvements in means for measuring the fullness of oscillating chill-moulds containing molten material
DE2921280A1 (de) † 1978-05-26 1979-11-29 Arbed Einrichtung zum stranggiessen von metallen unter elektromagnetischem ruehren
JPS6360056A (ja) † 1986-08-29 1988-03-16 Nisshin Steel Co Ltd Ｔｉ含有ステンレス鋼の連続鋳造方法および連続鋳造用鋳型
DE3730300C2 (de) † 1987-09-10 1989-08-10 Aeg-Elotherm Gmbh, 5630 Remscheid, De
JPH0351954U (de) † 1989-09-20 1991-05-21

Also Published As

Publication number Publication date
ATE158525T1 (de) 1997-10-15
EP0511465A3 (en) 1993-04-21
DE69227206T2 (de) 1999-04-15
EP0778098A2 (de) 1997-06-11
ES2123347T3 (es) 1999-01-01
EP0778098B1 (de) 1998-09-30
DE69222348T3 (de) 2004-07-22
DE69222348D1 (de) 1997-10-30
ES2108054T5 (es) 2004-07-01
EP0778098A3 (de) 1997-10-08
CA2040830C (en) 2003-08-19
LU87914A1 (fr) 1992-11-16
ES2108054T3 (es) 1997-12-16
DE69222348T2 (de) 1998-02-26
DE69227206D1 (de) 1998-11-05
ATE171656T1 (de) 1998-10-15
EP0511465A2 (de) 1992-11-04
CA2040830A1 (en) 1992-10-04
EP0511465B1 (de) 1997-09-24

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