EP1616644B1 - DIspositif pour le changement de poches à couler dans une installation de coulée continue - Google Patents

DIspositif pour le changement de poches à couler dans une installation de coulée continue Download PDF

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Publication number
EP1616644B1
EP1616644B1 EP20050014818 EP05014818A EP1616644B1 EP 1616644 B1 EP1616644 B1 EP 1616644B1 EP 20050014818 EP20050014818 EP 20050014818 EP 05014818 A EP05014818 A EP 05014818A EP 1616644 B1 EP1616644 B1 EP 1616644B1
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EP
European Patent Office
Prior art keywords
ladle
bearing ring
stool
ladles
disposed
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 - Fee Related
Application number
EP20050014818
Other languages
German (de)
English (en)
Other versions
EP1616644A1 (fr
Inventor
Alwin Geitner
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.)
LECH STAHLWERKE GmbH
Lech-Stahlwerke GmbH
Original Assignee
LECH STAHLWERKE GmbH
Lech-Stahlwerke 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 LECH STAHLWERKE GmbH, Lech-Stahlwerke GmbH filed Critical LECH STAHLWERKE GmbH
Publication of EP1616644A1 publication Critical patent/EP1616644A1/fr
Application granted granted Critical
Publication of EP1616644B1 publication Critical patent/EP1616644B1/fr
Expired - Fee Related 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
    • B22D11/10—Supplying or treating molten metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/12—Travelling ladles or similar containers; Cars for ladles
    • B22D41/13—Ladle turrets

Definitions

  • the invention relates to a device for changing the pans in continuous casting according to the preamble of claim 1.
  • the continuous casting process has long been known in the steel industry.
  • liquid steel is passed through a cooled mold, whereby, as a result of the cooling taking place there, an initial solidification of the steel occurs.
  • the shape is achieved by the cross-sectional shape of the mold.
  • the solidification process has already progressed to such an extent that an intrinsically stable shell is still present over the profile circumference, with the core still liquid.
  • the steel profile is fed via a discharge to a cooling bed.
  • liquid steel is brought to the pouring point in so-called pans.
  • the liquid steel is first poured into a buffer, from where it is passed to the mold. Since it is usually supplied from the intermediate storage of several dies with steel, the cache is also referred to as a distributor.
  • the use of a casting system with two pans is known.
  • the system has a vertical turret with two diametrically opposed support arms. On the support arms hang the two pans, one of which is placed in pouring position on the manifold and the other is in waiting position. After emptying the first ladle is rotated by rotation of the turret by 180 °, the other pan in the casting position, at the same time enters the empty ladle in waiting position. From the waiting position, the empty pan is hung by means of a crane and replaced by a new, which is then in waiting position.
  • a corresponding ladle turret, but with only one ladle, is in the DE 31 22 215 A1 described.
  • the invention has the object to provide a device for changing the pans in the continuous casting, with a pan change in the shortest possible time and with minimal space requirements can be performed.
  • a first advantage of the invention is that the pans thanks to the invention can be arranged very close to the axis of rotation and thus also to one another, since a structurally observed minimum distance, for example due to a central tower, is eliminated.
  • the resulting space-saving pan arrangement allows the use of this system even in cramped conditions, as they occur regularly, for example, in subsequent structural extensions of existing systems.
  • the close arrangement of the pans on the axis of rotation also means that the ladles only cover short distances during their rotation in the course of pan change. In this way, the pan change can be performed faster.
  • the clearance gauge required during the rotational movement of the ladle chair changes only insignificantly, so that there are hardly any disturbances for the rest of the operation in the steel mill. Also, the accident risk for the staff, starting from moving parts in the room, as far as possible reduced.
  • Another advantage of the invention results from the free area below the ladles and the distributor. As a result, the effluent from the distributor slag can be freely fed to the slag bucket.
  • the storage of the ladle chair on the peripheral edge and the load within this storage causes the load transfer into the ground is essentially by means of compressive forces.
  • a tensile stress due to moments, such as occur in revolving towers eliminated. In this way, the support structure can be formed easier and safer.
  • a roller conveyor is used according to a preferred embodiment of the invention, which allows a rotation with the least possible resistance and therefore only requires low driving forces.
  • the rollers are arranged on the ladder chair, while the bearing ring provides the raceway for the rollers.
  • the bearing ring is interrupted over part of its circumferential length. This has the advantage that when lifting a pan from the ladle chair during the pan change the pan does not need to be lifted over the bearing ring, which requires a corresponding free space upwards. This embodiment is thus preferably suitable in confined spaces.
  • the bearing ring itself is preferably formed of a plurality of segments, which initially brings advantages in building the bearing ring. However, this also gives the possibility to subsequently exchange segments, if they become unusable over time due to wear.
  • a connection of the segments with each other can be made for example by flange.
  • the ladle chair advantageously has a plate-like shape with a diameter corresponding to that of the bearing ring.
  • a design of the ladle chair in the form of a support grid with central rib and side ribs is preferred.
  • Fig. 1 the essential functional components of a continuous casting are shown schematically. It can be seen a fixed, based on foundations 1 base 2, which is composed essentially of a support frame 3 and the supports 4.
  • the supports 4 are arranged in a circle and carry with its upper end a bearing ring 5.
  • the bearing ring 5 forms the support for a rotatable about a vertical axis 6 ladle chair 7, which carries the two pans 8 and 9.
  • Fig. 1 shows a state in which the pan 8 in waiting position and the pan 9 is in the casting position.
  • the bottom of the pans 8 and 9 has feet 10 and each a spout 11.
  • a trough-shaped distributor 12 which is perpendicular to the plane of representation and is stationary relative to the supporting frame 3, into which the spout 11 of the pan 9 extends.
  • a spout 13 is seen to remove the slag from the liquid steel.
  • the part of the substructure 2 located below the outlet 13 is designed as a collecting trough and discharge to the dross bucket.
  • a spout 14 is arranged, through which the liquid steel can flow.
  • a mold 15 is held by the support frame 3 such that the spout 14 of the distributor 12 just reaches into the mold 15.
  • the mold 15 has in the present embodiment has a rectangular cross section and is otherwise water cooled.
  • About the spout 14 of the liquid steel enters the mold 15 and there undergoes an initial solidification due to the cooling, whereby a strand 16 is formed with already solidified shell but still liquid core.
  • the strand 16 is passed through lateral roller guides 17 for discharge and further to the cooling bed.
  • the pan changing device suitable for this task is shown in more detail in FIGS. 2 to 9.
  • the basic element used for this purpose is the bearing ring 5, the construction of which is evident above all from FIG. 6.
  • the bearing ring 5 consists of a plurality of circular arc segments 18, which are connected at their ends via flanges 19 to form a ring.
  • the bearing ring 5 is not closed, but has an opening 20 on the circumference. The opening 20 is used to facilitate lifting a pan 8 or 9, since a lifting of the pan 8 or 9 on the bearing ring 5 is not necessary.
  • the Bearing ring 5 can also have a smaller height over part of its circumference, which has the advantage that the mold 12 can be positioned closer to the pan 9 in the pouring position.
  • the bearing ring 5 While the bearing ring 5 is rigidly connected with its underside with the supports 4, the upper side of the bearing ring 5 is formed as a raceway 21. As can be seen in particular from Fig. 9, the raceway 21 is inclined transversely to the direction of outward.
  • a plate-shaped ladle chair 22 is arranged on this.
  • the exact structure of the ladle chair 7 can be seen above all from FIGS. 2 to 5 and in particular from FIG. 7.
  • FIGS. 2, 3, 7 In the plan view of the ladle chair 7 (FIGS. 2, 3, 7), one recognizes its essentially dish-shaped form with edge-side, point-symmetrically arranged to the axis 6 recesses 23, which are intended for receiving the pans 8 and 9.
  • On the periphery of the ladle chair 7 is enclosed by an upside-down U-profile 24.
  • a center rib 25 extending through the center point and connecting the opposing U-profiles 24 stiffens the ladle chair 7 and thereby divides it into two fields. The two fields are amplified by the point-symmetrical arrangement of side ribs 26 which extend from the central rib 25 to the U-profile 24.
  • the recesses 23 laterally bordering side ribs 26 form receptacles for the pans 8 and 9.
  • these side ribs 26 on their upper side by means of hydraulic cylinder 22 actuated lifting jaws 27 for raising and lowering the pans 8 and 9.
  • the lifting jaws 27 have contact surfaces 28 on which rest the pans 8 and 9 and rear abutment surfaces 29, which serve to center the pans 8 and 9 when lifted into the receptacles 23.
  • the rollers 30 are for the most part of the U-profile 24 received (Fig. 9), which has a corresponding number of horizontal axle 31 for this purpose. Only the rolling surface of the rollers 30 projects beyond the lower edge of the U-profile 24 and rests on the raceway 21 of the bearing ring 5.
  • the rolling surface of the rollers 30 in this case has the same transverse inclination as the raceway 21 of the bearing ring 5. In this way, a slip between the raceway 21 and the rolling surface of the rollers 30 is prevented.
  • the drive for performing a rotary movement of the ladle chair 7 relative to the bearing ring 5 is not shown in the drawings.
  • a preferred solution provides to secure a sprocket inside or outside the bearing ring 5 in the vicinity of the ladle chair 7.
  • On the ladder chair 7, one or more driven gears are provided, the teeth of which mesh with the teeth of the ring gear.
  • the teeth of sprocket and gear are very large dimensions to ensure the reliability of the drive.
  • An alternative drive consists of a plurality of directly driven rollers 30 for transmitting a rotary motion to the ladle chair 7 or a chain or cable drive, which acts directly on the ladle chair 7.
  • a reciprocating rotation of the ladle chair 7 on the bearing ring 5 by 180 ° is preferred. This corresponds to a rotary movement with changing direction of rotation. Likewise, a rotational movement with constant rotational direction by 180 ° would be conceivable.
  • Figs. 2 to 5 and Fig. 8 show a ladle chair 7 with inserted pans 8 and 9.
  • the pans 8 and 9 consist essentially of cylindrical containers for holding the liquid steel and can easily reach a weight of 70 to.
  • the upper edge of the pans 8, 9 has a slag outlet 32.
  • Laterally on the container wall are provided at diametrically opposite points suspension elements 33, the articulated with the wall of the pans 8, 9 are connected.
  • the suspension elements 33 form for an upper suspension points 34 for the crane hook and lower bearing points 35, with which they rest on the Hubbacken 27 of the receptacles 23 of the ladle chair 7.
  • the pan change process is as described below.
  • the full liquid steel pan 8 rests in the receptacle 23 of the ladle chair 7 with lowered lifting jaws 27, which corresponds to the waiting position.
  • the pan 9 located in the pouring position has just completely emptied its contents into the distributor 12, which in turn has now reached the maximum filling height.
  • both pans 8 and 9 are raised by extending the lifting jaws 27, wherein the spout 11 of the pan 9 is pulled out of the distributor 12.
  • the ladle chair 7 is rotated by 180 °, whereby the full pan 8 in pouring position and the empty pan 9 comes into waiting position.
  • the pan 9 is lowered by retracting the lifting jaws 27, so that the spout 11 of the pan 8 is immersed in the manifold 12.
  • the feeding of the distributor 12 with liquid steel from the pan 9 takes place. This process must be completed before the distributor 12 runs empty, since otherwise an interruption of the strand 16 occurs.
  • the waiting in empty position pan 9 is now lifted by means of a crane from the ladle chair 22.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Claims (17)

  1. Dispositif pour le changement des poches de coulée (8, 9) dans une installation de coulée continue, comportant un berceau de poche (7), qui comporte des logements pour les poches (8, 9), sachant que sous l'effet de la rotation du berceau de poche (7) les poches (8, 9) sont amenées en alternance dans une position de coulée, dans laquelle l'acier liquide, en vue d'un formage continu et d'une solidification initiale, est guidé par l'intermédiaire d'un répartiteur (12) dans une lingotière (15), caractérisé par une couronne de support (5) destinée à porter le berceau de poche (7), sachant que le berceau de poche (7) et la couronne de support (5) sont agencés coaxialement l'un à l'autre, les poches (8, 9) étant situées à l'intérieur de la projection axiale de la couronne de support (5) et le berceau de poche (7), en appui sur la couronne de support (5), pouvant être entraîné en rotation par rapport à la couronne de support (5) autour de l'axe (6) commun, afin d'amener respectivement l'une des deux poches (8, 9) dans la position de coulée.
  2. Dispositif selon la revendication 1, caractérisé en ce que le berceau de poche (7) et la couronne de support (5) forment une voie de roulement circulaire pour la rotation du berceau de poche (7).
  3. Dispositif selon la revendication 2, caractérisé en ce que les galets (30) sont agencés au niveau du berceau de poche (7) et la glissière (21) est agencée sur la couronne de support (5).
  4. Dispositif selon la revendication 2 ou 3, caractérisé en ce que la glissière (21) de la voie de roulement est inclinée vers l'extérieur et les galets (30) comportent une surface de roulement élargie en cône vers l'extérieur.
  5. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la couronne de support (5) est interrompue sur une partie de sa périphérie, l'intervalle de rupture (20) étant adapté au diamètre des poches (8, 9).
  6. Dispositif selon la revendication 5, caractérisé en ce que l'intervalle de rupture (20) est apte à être fermé par une pièce adaptée (18).
  7. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la couronne de support (5) est formée par une pluralité de segments (18), de préférence douze segments (18).
  8. Dispositif selon la revendication 7, caractérisé en ce que les segments (18) de la couronne de support (5) sont assemblés les uns aux autres par des assemblages à brides (19).
  9. Dispositif selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le berceau de poche (7) a une forme de disque et son diamètre correspond sensiblement au diamètre de la couronne de support (5).
  10. Dispositif selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le berceau de poche (7) est réalisé sous la forme d'une grille de support (25, 26).
  11. Dispositif selon l'une quelconque des revendications 1 à 10, caractérisé en ce que le berceau de poche (7) comporte sur son pourtour des évidements (23), dont la largeur est ajustée au diamètre des poches (8, 9).
  12. Dispositif selon l'une quelconque des revendications 1 à 11, caractérisé en ce que les logements (23) pour les poches (8, 9) sont agencés en étant diamétralement opposés par rapport à l'axe de rotation (6).
  13. Dispositif selon l'une quelconque des revendications 1 à 12, caractérisé en ce que les logements (23) pour les poches (8, 9) sont agencés de manière à pouvoir être relevés et abaissés dans le berceau de poche (7).
  14. Dispositif selon l'une quelconque des revendications 1 à 13, caractérisé par un système d'entraînement pour actionner le mouvement de rotation du berceau de poche (7) par rapport à la couronne de support (5).
  15. Dispositif selon la revendication 14, caractérisé en ce que le système d'entraînement comporte une couronne dentée, qui est agencée sur la couronne de support (5) et qui coopère avec un pignon à chaîne entraîné.
  16. Dispositif selon la revendication 14, caractérisé en ce que le système d'entraînement comporte au moins une partie des galets (30) de la voie de roulement, lesquels sont actionnés directement.
  17. Dispositif selon la revendication 14, caractérisé en ce que le système d'entraînement comporte une chaîne ou un câble entraîné, coopérant avec le berceau de poche (7).
EP20050014818 2004-07-17 2005-07-08 DIspositif pour le changement de poches à couler dans une installation de coulée continue Expired - Fee Related EP1616644B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200410034704 DE102004034704B3 (de) 2004-07-17 2004-07-17 Vorrichtung zum Wechseln der Pfannen bei Stranggießanlagen

Publications (2)

Publication Number Publication Date
EP1616644A1 EP1616644A1 (fr) 2006-01-18
EP1616644B1 true EP1616644B1 (fr) 2007-10-03

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EP20050014818 Expired - Fee Related EP1616644B1 (fr) 2004-07-17 2005-07-08 DIspositif pour le changement de poches à couler dans une installation de coulée continue

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EP (1) EP1616644B1 (fr)
DE (1) DE102004034704B3 (fr)
ES (1) ES2294600T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009003917B4 (de) 2009-01-02 2014-12-11 Oleksandr Mislavskyy Zweipositionstand für die Gießpfannen bei Stranggießanlagen
CN105364060A (zh) * 2015-12-08 2016-03-02 广西长城矿山机械设备制造有限公司 一种铸造用浇注装置
CN107214314B (zh) * 2017-05-04 2019-02-15 安徽海立精密铸造有限公司 一种铸造用轴承圈取出装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT267099B (de) * 1967-02-06 1968-12-10 Voest Ag Anlage zum kontinuierlichen Stranggießen von Metallen
DE2146221C3 (de) * 1971-09-16 1979-09-27 Demag Ag, 4100 Duisburg Gießvorrichtung
DE3122215C2 (de) * 1981-06-04 1986-10-09 PHB Weserhütte AG, 5000 Köln Pfannendrehturm
JP3447469B2 (ja) * 1996-05-27 2003-09-16 新日本製鐵株式会社 連続鋳造の取鍋ターレット
JP3566816B2 (ja) * 1996-09-19 2004-09-15 新日本製鐵株式会社 連続鋳造の取鍋ターレット

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Publication number Publication date
DE102004034704B3 (de) 2006-01-26
ES2294600T3 (es) 2008-04-01
EP1616644A1 (fr) 2006-01-18

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