EP3612329B1 - Procédé et dispositif de fabrication de blocs moulés à partir de métal - Google Patents

Procédé et dispositif de fabrication de blocs moulés à partir de métal Download PDF

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Publication number
EP3612329B1
EP3612329B1 EP18722911.7A EP18722911A EP3612329B1 EP 3612329 B1 EP3612329 B1 EP 3612329B1 EP 18722911 A EP18722911 A EP 18722911A EP 3612329 B1 EP3612329 B1 EP 3612329B1
Authority
EP
European Patent Office
Prior art keywords
ingot
longitudinal axis
mold
cast block
rotation
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.)
Active
Application number
EP18722911.7A
Other languages
German (de)
English (en)
Other versions
EP3612329A1 (fr
Inventor
Klaus Von Eynatten
Harald Holzgruber
Heinz Rumpler
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.)
Inteco Melting And Casting Technologies GmbH
Original Assignee
Inteco Melting And Casting Technologies GmbH
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 Inteco Melting And Casting Technologies GmbH filed Critical Inteco Melting And Casting Technologies GmbH
Publication of EP3612329A1 publication Critical patent/EP3612329A1/fr
Application granted granted Critical
Publication of EP3612329B1 publication Critical patent/EP3612329B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1281—Vertical removing
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/0401—Moulds provided with a feed head
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/0405—Rotating moulds
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting
    • 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
    • B22D11/08—Accessories for starting the casting procedure
    • B22D11/081—Starter bars
    • 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
    • B22D11/08—Accessories for starting the casting procedure
    • B22D11/081—Starter bars
    • B22D11/083—Starter bar head; Means for connecting or detaching starter bars and ingots
    • 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
    • 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
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling

Definitions

  • the invention relates to a method for producing cast blocks from metal, in particular from steel with a cross-sectional area of more than 0.1 m 2 , according to the preamble of claim 1.
  • the invention also relates to a device for performing the method according to the invention.
  • the invention is based on the object of developing a method for producing cast blocks from metal, in particular from steel with a cross-sectional area of more than 0.1 m 2 , according to the preamble of claim 1, in such a way that the produced Cast ingots have a particularly high quality.
  • the cross section of such a cast block is as homogeneous as possible and free of segregation and with as few or small pores and voids as possible can be formed.
  • This object is achieved in a method for producing cast blocks made of metal with the features of claim 1 in that the rotation of the cast block is generated via a standing element or a trigger stamp on which the cast block stands with its facing side.
  • Such a rotation of the cast block, in which this is generated by means of a stand element or a withdrawal stamp on which the cast block stands, has the advantage that the cast block is not mechanically stressed on its outer circumference.
  • the principle according to the invention consists in an at least temporary rotation of the cast block around its longitudinal axis as long as the metal of the cast block has not yet completely solidified, the rotation already taking place during the actual casting process, ie within the area of the mold.
  • the point in time for the beginning and the end of the turning of the ingot, the type of turning and the direction of rotation depends on various factors and may need to be adapted to the particular application.
  • a first variant of the method which can be implemented in a particularly simple manner in terms of device technology, provides for the cast block to be rotated continuously in one (single) direction about the longitudinal axis.
  • the cast block is rotated in an oscillating manner about the longitudinal axis, for example by an angle of rotation of ⁇ 45 °, based on a central position.
  • An additional possibility for influencing the quality or the solidification properties of the cast block provides that the angular speed of rotation of the cast block about the longitudinal axis is varied during the movement of the cast block. For example, a uniform increase or reduction in the angular speed of rotation can be provided, or else a sudden stop and subsequent rotation at high acceleration.
  • liquid metal continuously reaches the area of the mold, with the at least partially solidified block being withdrawn by means of the pull-off die at the same time, so that liquid metal can be replenished into the mold.
  • a withdrawal movement of the casting block usually takes place continuously or at a constant withdrawal speed, at least up to the point in time at the end of casting at which the withdrawal speed is reduced, for example.
  • Another variation of the method according to the invention described so far provides that the mold (in addition to the cast block) is rotated about the longitudinal axis.
  • Such a rotation of the mold around the longitudinal axis can be done either by an additional, separate drive, or by the fact that the mold is movably arranged around its longitudinal axis, and rotation of the mold is caused by the friction with the metal of the cast block.
  • the cast block in order to achieve the highest possible quality of the cast block, after the casting process, the cast block is continues to rotate about its longitudinal axis for a certain period of time
  • the casting block should rotate about its longitudinal axis until it is ensured that the cross section of the casting block has completely solidified over its entire length.
  • An additional optimization of the quality of the cast block can be achieved if the liquid metal of the cast block is moved by means of an electromagnetic stirring coil.
  • a stirring coil can either be arranged in a stationary manner in the area of the cast block, or it can be longitudinally displaceable in the direction of the longitudinal axis of the cast block around the cast block. It is also possible to provide a combination of a rigid and a movable electromagnetic stirring coil.
  • the invention further comprises a device for carrying out the method according to the invention described so far, the device having a pouring ladle and optionally an intermediate vessel for feeding liquid metal melt into a mold that is open at the bottom.
  • a height-movably arranged withdrawal punch is provided for at least indirect arrangement of the cast ingot on a standing surface facing the mold.
  • the device according to the invention is characterized by means for rotating the cast block about its longitudinal axis.
  • the means are formed by the trigger itself or a stand element on which the cast block stands, in that the trigger or the stand element is designed to be rotatable about its longitudinal axis by means of a drive.
  • mechanical loads on the circumferential surface of the cast block are avoided with means for strand rotation designed in this way.
  • the means are formed by drive means acting on the outer circumference of the cast block, in particular in the form of rotatable rollers or cylinders. Rollers or cylinders of this type are at least positively against the outer circumference of the cast block and cause the desired rotation of the cast block, in which case the pull-off punch only has to be rotatable about the longitudinal axis, but does not need its own drive.
  • the mold is arranged to be rotatable about the longitudinal axis and / or that at least one electromagnetic stirring coil is provided for the cast block.
  • this shows a greatly simplified longitudinal section of a device for producing a cast block.
  • the device 10 shown in the figure serves for the discontinuous production of a cast block 1 from metal 2, in particular from steel, with a cross-sectional area of preferably more than 0.1 m 2 and a length of, for example, up to 15 m.
  • the cross-sectional area of the cast block 1 is preferably circular, but can be rectangular or square, or have any other desired shape.
  • the device 10 comprises a pouring ladle 11, from which the liquid metal 2 flows into a downwardly open one via an optionally present distribution vessel 12 Mold 15 can be delivered. Above the mold 15, on the side facing the distribution vessel 12, a lining 16 can optionally be provided, which is surrounded radially by a heating device in the form of an induction coil 17.
  • the unit comprising the lining 16 and heating device or induction coil 17 is also referred to as a "feeder". The feeder is used to heat the liquid metal, especially at the end of casting.
  • a different shape and arrangement of a heating device can also be provided, for example in the form of heating rods, electrodes or the like arranged above the brick lining 16.
  • the chill mold 15 adjoins the feeder and can optionally be surrounded radially by an electromagnetic stirrer 19.
  • the meniscus 3 of the molten metal is located, for example, in the area of the mold 15, it being possible for the meniscus 3 to be covered by powder (not shown) for lubrication and / or for (thermal) insulation.
  • the inner cross-section of the mold 15 is adapted to or corresponds to the cross-section of the cast ingot 1 to be formed.
  • a cooling device 21 which is arranged in operative connection with the cast ingot 1, may be connected below the mold 15.
  • a further electromagnetic stirrer 22 can be provided below the mold 15, which can be arranged to be movable longitudinally in the direction of the double arrow 23 in the direction of a longitudinal axis 5 of the cast ingot 1.
  • the mold 15 is mounted rotatably about the longitudinal axis 5 of the cast block 1 and the mold 15 by means of bearing devices (not shown).
  • a possibly cooled stand element 25 is provided below the cast block 1, which forms a stand surface 26 for the cast block 1 on the side facing the cast block 1.
  • the stand element 25 is connected to a pull-off stamp 28, which is connected to a longitudinal column 30 via a cross member 29.
  • the cross member 29 or the puller punch 28 can be raised and lowered in the direction of the longitudinal axis 5 by means of a drive (not shown).
  • the standing element 25 is also rotatably mounted about the longitudinal axis 5 and can generate an active rotation of the cast block 1 about the longitudinal axis 5 during the casting process of the cast block 1 by means of a drive 32.
  • the drive 32 is preferably designed in such a way that, depending on the application, it can also oscillate the cast block 1 or the standing element 25, for example by 45 ° around a central position of the cast block 1, as well as at different angular speeds according to a provided speed profile can move.
  • rollers 35 acting on the outer circumference 6 of the cast block 1 above the stand element 25 can be used, each of which is rotatably mounted in an axis 36 and driven by a drive 37.
  • rollers 35 are provided, preferably at equal angular intervals around the longitudinal axis 5.
  • the cast block 1 is withdrawn from the mold 15 in the direction of the longitudinal axis 5 downwards by means of the withdrawal punch 28.
  • the withdrawal speed of the ingot 1 can be uniform or discontinuous.
  • the liquid metal 2 solidifies within the cast block 1 from the outer circumference 6 of the cast block 1 in the direction of the longitudinal axis 5. After the regular end of casting, provision can be made for liquid metal to continue to be used in accordance with the disclosure of FIG WO 2015/101553 A2 is poured into the mold 15 to compensate for the shrinkage of the metal melt.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Claims (13)

  1. Procédé de fabrication de lingots (1) en métal, notamment en acier, ayant une surface de section transversale de plus de 0,1 m2, du métal (2) liquide s'écoulant soit directement d'une poche de coulée (11) soit par un répartiteur (12) dans une lingotière (15) ouverte vers le bas, le lingot (1) au moins partiellement solidifié étant retiré de la lingotière (15) dans la direction d'un axe longitudinal (5) du lingot (1) en utilisant un outil de retirage (28) qui peut être déplacé de manière verticale dans la direction de l'axe longitudinal (5) et sur lequel le lingot (1) est au moins indirectement disposé, et le lingot (1) étant au moins temporairement tourné autour de son axe longitudinal (5), au moins pendant le processus de coulée,
    caractérisé en ce que
    la rotation du lingot (1) est réalisée par un élément de socle (25) ou un outil de retirage (28) sur lequel le lingot (1) repose par son côté lui faisant face.
  2. Procédé selon la revendication 1,
    dans lequel le lingot (1) est tourné de manière continue dans une direction autour de l'axe longitudinal (5).
  3. Procédé selon la revendication 1,
    dans lequel le lingot (1) est tourné de manière oscillante autour de l'axe longitudinal (5).
  4. Procédé selon la revendication 2 ou la revendication 3,
    dans lequel la vitesse angulaire de rotation du lingot (1) autour de l'axe longitudinal (5) est variée pendant la rotation du lingot (1).
  5. Procédé selon l'une quelconque des revendications 1 à 4,
    dans lequel le lingot (1) est déplacé de manière discontinue dans la direction de l'axe longitudinal (5) pendant le retirage de la lingotière (15).
  6. Procédé selon l'une quelconque des revendications 1 à 5,
    dans lequel la lingotière (15) est tournée autour de l'axe longitudinal (5).
  7. Procédé selon l'une quelconque des revendications 1 à 6,
    dans lequel la rotation du lingot (1) est poursuivie pour une durée définie après la fin du processus de coulée.
  8. Procédé selon l'une quelconque des revendications 1 à 7,
    dans lequel le métal (2) liquide du lingot (1) est remué au moyen d'au moins une bobine d'agitation (19, 22) électromagnétique.
  9. Dispositif (10) pour effectuer un procédé selon l'une quelconque des revendications 1 à 8, le dispositif (10) comprenant une poche de coulée (11) et, le cas échéant, un répartiteur (12) afin d'introduire du métal (2) liquide dans une lingotière (15) ouverte vers le bas, et comprenant un outil de retirage (28) qui peut être déplacé de manière verticale afin de disposer le lingot (1) au moins indirectement sur une surface de socle (26) qui fait face à la lingotière (15), des moyens destinés à tourner le lingot (1) autour de son axe longitudinal (5) étant prévus,
    caractérisé en ce que
    les moyens sont réalisés par un élément de socle (25) qui peut être déplacé autour de l'axe longitudinal (5) et qui est relié à un entraînement (32) ou par l'outil de retirage (28).
  10. Dispositif selon la revendication 9,
    dans lequel la lingotière (15) est disposée de manière tournante autour de l'axe longitudinal (5).
  11. Dispositif selon la revendication 9 ou la revendication 10,
    dans lequel au moins une bobine d'agitation (19, 22) électromagnétique est prévue pour le lingot (1).
  12. Dispositif selon l'une quelconque des revendications 9 à 11,
    dans lequel un revêtement (16) est prévu du côté de la lingotière (15) qui fait face à la poche de coulée (11) ou au répartiteur (12).
  13. Dispositif selon la revendication 12,
    dans lequel la partie du revêtement (16) peut être chauffée au moyen d'un dispositif de chauffage, de préférence au moyen d'une bobine d'induction (17) qui entoure le revêtement (16) de manière radiale ou au moyen d'un élément de chauffage qui est disposé au-dessus du revêtement (16), par exemple une électrode ou similaire.
EP18722911.7A 2017-04-20 2018-04-17 Procédé et dispositif de fabrication de blocs moulés à partir de métal Active EP3612329B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017108394.4A DE102017108394A1 (de) 2017-04-20 2017-04-20 Verfahren und Vorrichtung zum Herstellen von Gussblöcken aus Metall
PCT/EP2018/059728 WO2018192903A1 (fr) 2017-04-20 2018-04-17 Procédé et dispositif servant à la fabrication de lingots à partir de métal

Publications (2)

Publication Number Publication Date
EP3612329A1 EP3612329A1 (fr) 2020-02-26
EP3612329B1 true EP3612329B1 (fr) 2021-02-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP18722911.7A Active EP3612329B1 (fr) 2017-04-20 2018-04-17 Procédé et dispositif de fabrication de blocs moulés à partir de métal

Country Status (5)

Country Link
US (1) US11020795B2 (fr)
EP (1) EP3612329B1 (fr)
CN (1) CN110545935B (fr)
DE (1) DE102017108394A1 (fr)
WO (1) WO2018192903A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112974740B (zh) * 2021-04-19 2021-07-30 北京科技大学 一种gh4151合金的真空感应熔炼浇铸工艺和锭模装置
AT525111A1 (de) 2021-06-08 2022-12-15 Primetals Technologies Austria GmbH Rühren bei gegossenen Vorblöcken mit oszillierendem Strangrührer
CN114905016B (zh) * 2022-06-13 2024-01-12 武汉大西洋连铸设备工程有限责任公司 一种应用于铸坯凝固过程中的机械旋转搅拌装置

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DE1752934U (de) * 1956-06-28 1957-09-26 Degussa Vorrichtung zum abziehen von gussstraengen beim stranggiessverfahren.
NL133438C (fr) * 1965-03-03
FR2150237B1 (fr) * 1971-08-25 1974-05-10 Etudes De Centrifugation
FR2369039A1 (fr) * 1976-10-29 1978-05-26 Creusot Loire Procede d'extraction
US4612972A (en) * 1982-01-04 1986-09-23 Olin Corporation Method and apparatus for electro-magnetic casting of complex shapes
SE464619B (sv) * 1985-09-13 1991-05-27 Olsson Ag Erik Saett och anlaeggning foer straenggjutning med horisontell eller lutande kokill
JPS63157739A (ja) * 1986-12-19 1988-06-30 Kawasaki Steel Corp 高融点金属の中空鋳塊の製造装置
CN2043531U (zh) * 1988-06-30 1989-08-30 上海钢铁研究所 真空双电极自耗炉的拉锭装置
US4989666A (en) * 1988-12-22 1991-02-05 Swiss Aluminium Ltd. Process and device for electromagnetically casting metals
JPH09276993A (ja) * 1996-04-15 1997-10-28 Sanyo Special Steel Co Ltd 回転連続鋳造の凝固末期軽圧下方法
JP5027682B2 (ja) * 2008-01-28 2012-09-19 東邦チタニウム株式会社 高融点金属インゴットの製造方法
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RU2675880C2 (ru) * 2014-03-27 2018-12-25 Прайметалз Текнолоджиз Аустриа ГмбХ Полунепрерывное литье стальной заготовки

Also Published As

Publication number Publication date
US20210023611A1 (en) 2021-01-28
WO2018192903A1 (fr) 2018-10-25
US11020795B2 (en) 2021-06-01
DE102017108394A1 (de) 2018-10-25
CN110545935B (zh) 2022-02-11
EP3612329A1 (fr) 2020-02-26
CN110545935A (zh) 2019-12-06

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