EP0442515A1 - Dispositif de remplacement d'une buse de coulée immergée entre deux récipients métallurgiques d'une installation de coulée continue - Google Patents

Dispositif de remplacement d'une buse de coulée immergée entre deux récipients métallurgiques d'une installation de coulée continue Download PDF

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Publication number
EP0442515A1
EP0442515A1 EP91102134A EP91102134A EP0442515A1 EP 0442515 A1 EP0442515 A1 EP 0442515A1 EP 91102134 A EP91102134 A EP 91102134A EP 91102134 A EP91102134 A EP 91102134A EP 0442515 A1 EP0442515 A1 EP 0442515A1
Authority
EP
European Patent Office
Prior art keywords
immersion
spout
support device
operating position
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.)
Granted
Application number
EP91102134A
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German (de)
English (en)
Other versions
EP0442515B1 (fr
Inventor
Romano Dr.-Ing. Cappelli
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT9191102134T priority Critical patent/ATE105522T1/de
Publication of EP0442515A1 publication Critical patent/EP0442515A1/fr
Application granted granted Critical
Publication of EP0442515B1 publication Critical patent/EP0442515B1/fr
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
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles
    • B22D41/56—Means for supporting, manipulating or changing a pouring-nozzle

Definitions

  • the invention relates to a device for exchanging an immersion tube between two metallurgical vessels of a continuous casting plant.
  • the invention relates to a device for exchanging a dip tube between a tundish and a mold, or to an exchange device for dip tubes in thin slab casting.
  • the dip tube Especially in thin slab casting, it is necessary for the dip tube to be changed as quickly as possible.
  • the dip tubes required for this distribute the steel flow, for example, over a width of 340 mm with slab thicknesses of approx. 36 mm.
  • the wall thickness of such immersion tubes is extremely thin and does not go through the desired sequence. This requires changing the dip tube during the sequence. Because a slab length of 2 m would be achieved for the aforementioned example with a change duration of, for example, 8 seconds, for which the entire casting device is not designed, an attempt must be made to shorten the dip tube change to shorter times.
  • Valves for regulating the steel supply from the distributor (tundish) into the mold are both spouts that are controlled by plugs and slide closures of various designs.
  • the invention is based on the object of offering a device for exchanging an immersion tube between two metallurgical vessels of a continuous casting installation, which enables an immersion tube exchange to be carried out as quickly as possible, with the immersion tube being changed as far as possible in an automated manner.
  • the device according to the invention consists of a support device for receiving a first dip tube and bearing with its upper free end against the corresponding lower free end of a spout of a first metallurgical vessel and for receiving a second dip tube at an angle to the first dip tube, the support device is designed to be rotatable to remove the first dip tube from the operating position into a removal position and to pivot the second dip tube into the operating position and rest against the lower free end of the spout.
  • a device which simultaneously receives two dip tubes spaced apart from one another on a support device, the support device being pivotable, so that the dip tube which is in the operating position is pivoted away from the operating position and at the same time the one previously in in order to change the dip tube a dip tube located in a waiting position is pivoted into the operating position. It is obvious that such a dip tube change can be accomplished in a very short time with a corresponding rotatable support device and enables the sequence to be continued safely.
  • the support device is preferably attached to the first metallurgical vessel (for example the tundish).
  • support plates can be attached to the bottom of the first vessel, each of which has a bearing at its free end, in each of which a shaft is guided, the free sections of the shafts directed against one another being attached to the support device.
  • At least one of the shafts can be rotated alternately via a drive member in order to simultaneously pivot the support device or the immersion tubes attached to the support device.
  • the drivable shaft has at its free outer end a toothed ring which is connected to a toothed rack which can be acted upon by a piston-cylinder unit. Depending on the direction of movement of the rack, a torque is transmitted to the shaft and thus the shaft and ultimately the support device are rotated in one direction or the other.
  • attachment of the support device or the formation of the drive member can also be carried out in another way, as will be explained below.
  • the support device is arranged such that the associated dip tubes in the operating position protrude centrally into the second metallurgical vessel (the mold) with its lower free end.
  • the central longitudinal axis of the immersion tube in the operating position extends the central longitudinal axis of the associated spout. This ensures a continuous supply of the molten metal from the tundish to the mold.
  • the immersion tubes are positioned at an angle of approximately 90 degrees to one another, this has the advantage that the immersion tube which is transported from the operating position into the removal position runs approximately horizontally in the removal position, so that it can be easily removed from it replace with a new dip tube.
  • the support device is rotated in the opposite direction as before, so that the newly installed dip tube is transferred to the operating position and the used dip tube in turn reaches the position in which the fresh dip tube was originally when the first dip tube was changed.
  • This arrangement enables easy access and a safe dip tube change within seconds. Experiments have shown that the dip tube change can be shortened to one or two seconds with the device described.
  • the most important advantages of the device are therefore the speed of the exchange, with the result that only a very short interruption in the supply of the molten metal is required.
  • the flow of the molten metal can be briefly interrupted by the control valve described above. In this way there is practically no loss of time and material.
  • the automated replacement of the immersion tubes makes manual work with the corresponding dangers for the operating personnel unnecessary. Removing the used dip tube and replacing it with a new dip tube can also be done mechanically with appropriate positioning devices.
  • FIG. 1 the lower part of a tundish 1 is shown with a spout 2.
  • support plates 4 protrude downward on both sides of the spout, each serving to rotatably receive a shaft 5 in an associated bearing 6 (FIG. 2).
  • the two shafts 5 run coaxially to one another and perpendicular to side walls 7 of a rotatable support device 8, the shafts 5 being fastened to the side walls 7.
  • the side walls 7 are connected to one another via transverse walls 23.
  • the support device 8 is designed with clamping devices 9 for holding two immersion tubes 10A, 10W.
  • the tensioning devices 9 on the support device 8 have a two-part outer sleeve 9E which can be moved away from one another so that the upper part of the respective dip tube 10A, 10W, on which an outer sleeve 91 is fastened, can be passed.
  • the elements 9E of the outer sleeve are moved towards one another again, that is to say they are tensioned, they come to bear against the respective inner sleeve 9I and position the dip tube in the correct position, as will be explained in more detail below.
  • the two dip tubes are arranged at an angle of 90 degrees to one another with their respective central longitudinal axis (II-II) and can be rotated about a common center of rotation C.
  • Figure 2 in turn shows that one of the shafts has at its free end a ring gear 11 which cooperates with a rack 12, at the free end of which a hydraulically operating piston-cylinder unit 14, 13 is arranged, which in turn via an anchor 15 on Bottom 3 of the tundish is attached.
  • the piston-cylinder unit 14, 13 is acted upon by a pressure fluid, which is supplied by a pressure fluid source, not shown.
  • the movement of the rack 12 in one direction or the other causes the support device 8 to rotate in one direction or the other about the axis V - V (FIG. 2) defined by the shafts 5, the shafts 5 in corresponding bearings 6 of the support plates 4 be performed.
  • the center longitudinal axis of the dip tube 10A in the operating position 10W is indicated by III - III.
  • the procedure is exactly the opposite, that is, after the used dip tube 10R has been replaced by a new dip tube 10A, it is transferred from the waiting position to the operating position 10W according to arrow F2, and the used dip tube 10W is simultaneously pivoted into the position, that in Figure 1 Has dip tube 10A.
  • two opposite metal elements in the form of a spherical cap 22 are attached to the lower end of the spout 2. Furthermore, the lower end of the spout 2 is formed with a corresponding annular surface, which in turn is formed corresponding to the corresponding upper free ends of the immersion tubes 10A, 10W.
  • the annular surface of the lower end of the spout 2 (the sleeve 2) and the corresponding annular surface The upper end of the immersion tubes 10W, 10A thus lie on a ball which has the same diameter as that on which the said spherical cover 22 is located.
  • FIG. 3 also shows a further embodiment of the device.
  • the lower part of a tundish 1 with spout 2 can again be seen.
  • the rotating device with the rack 12 and the piston-cylinder unit 13, 14 can be seen.
  • the immersion tube 10A originally in the waiting position is in the operating position 10W below the spout 2, but at a distance from the lower end of the spout 2
  • the immersion tube is held over the tensioning device 9 or the sleeve 9I.
  • the dip tube is simultaneously inserted into a sleeve 16 with two semicircular, opening arms, which are connected at 17 to a hinge 18, from which a rod 19 extends, which is pivotably guided at 20 and a counterweight at its lower free end 21 carries.
  • the counterweight 21 serves to raise the dip tube 10W upwards and allows the dip tube to slide into the outer sleeve 9E until the upper end of the dip tube 10W bears against the lower free end of the spout 2.
  • the reverse procedure is used.
  • the cuff 16 is opened before the further rotation of the support device 8 so that the immersion tube can slide vertically in order to detach from the spout 2.
  • the parts 18 to 21 i.e. the lifting / lowering device
  • FIG. 4 shows a support device in the form of a robot 30.
  • the robot 30 is arranged in the immediate vicinity of the spout 2 of the tundish 1. It comprises a control unit 31 of a system of controlled and programmed telescopic rods 32, 33, 34, 35, 36 in order to close the immersion tube 10W in the operating position under the spout 2 hold or the plunger 10A in the upper waiting position.
  • the free end of the telescopic rod 36 has a gripper 37, which serves to receive the dip tube 10W.
  • the free end of the telescopic rod 34 is also formed with a corresponding gripper 38, which serves analogously to receive the immersion tube 10A.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
EP91102134A 1990-02-15 1991-02-15 Dispositif de remplacement d'une buse de coulée immergée entre deux récipients métallurgiques d'une installation de coulée continue Expired - Lifetime EP0442515B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT9191102134T ATE105522T1 (de) 1990-02-15 1991-02-15 Vorrichtung zum austausch eines tauchrohres zwischen zwei metallurgischen gefaessen einer stranggussanlage.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1937590 1990-02-15
IT19375A IT1238623B (it) 1990-02-15 1990-02-15 Dispositivo per sostituire un condotto di protezione della colata continua di acciaio da un primo contenitore in un secondo contenitore

Publications (2)

Publication Number Publication Date
EP0442515A1 true EP0442515A1 (fr) 1991-08-21
EP0442515B1 EP0442515B1 (fr) 1994-05-11

Family

ID=11157164

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91102134A Expired - Lifetime EP0442515B1 (fr) 1990-02-15 1991-02-15 Dispositif de remplacement d'une buse de coulée immergée entre deux récipients métallurgiques d'une installation de coulée continue

Country Status (4)

Country Link
EP (1) EP0442515B1 (fr)
AT (1) ATE105522T1 (fr)
DE (1) DE59101591D1 (fr)
IT (1) IT1238623B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0577909A1 (fr) * 1992-07-10 1994-01-12 FLOCON ITALIANA S.r.l. Busette de coulée auxiliaire remplaçable
WO1995003906A1 (fr) * 1993-07-27 1995-02-09 International Industrial Engineering S.A. Dispositif d'amenee et d'echange d'un tube de coulee dans une installation de coulee continue a brames minces
WO1996034713A1 (fr) * 1995-05-05 1996-11-07 Vesuvius France S.A. Dispositif et procede de changement d'un tube de coulee continue de repartiteur d'acierie
WO1997030807A1 (fr) * 1996-02-22 1997-08-28 Vesuvius France S.A. Panier de coulee equipe d'un changeur de tube et d'une plaque pour ce changeur

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3743007A (en) * 1970-10-21 1973-07-03 Schloemann Ag Continuous casting apparatus with inter-changeable pouring tubes
FR2530167A1 (fr) * 1982-07-13 1984-01-20 Air Liquide Procede et installation de protection d'un jet de coulee de metal liquide
EP0333367A1 (fr) * 1988-03-08 1989-09-20 National Steel Corporation Dispositif de support et d'échange d'une busette de coulée

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3743007A (en) * 1970-10-21 1973-07-03 Schloemann Ag Continuous casting apparatus with inter-changeable pouring tubes
FR2530167A1 (fr) * 1982-07-13 1984-01-20 Air Liquide Procede et installation de protection d'un jet de coulee de metal liquide
EP0333367A1 (fr) * 1988-03-08 1989-09-20 National Steel Corporation Dispositif de support et d'échange d'une busette de coulée

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 10, no. 146 (M-482)[2203], 28th May 1986; & JP-A-61 003 655 (KUROSAKI YOUGIYOU K.K.) 09-11-1986 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0577909A1 (fr) * 1992-07-10 1994-01-12 FLOCON ITALIANA S.r.l. Busette de coulée auxiliaire remplaçable
WO1995003906A1 (fr) * 1993-07-27 1995-02-09 International Industrial Engineering S.A. Dispositif d'amenee et d'echange d'un tube de coulee dans une installation de coulee continue a brames minces
BE1007317A3 (fr) * 1993-07-27 1995-05-16 Int Ind Eng Sa Dispositif d'amenee et d'echange d'un tube de coulee dans une installation de coulee continue a brames minces.
US5693249A (en) * 1993-07-27 1997-12-02 International Industrial Engineering S.A. Device for supplying and replacing pouring tubes in a continuous casting plant
CN1046877C (zh) * 1993-07-27 1999-12-01 国际工业工程有限公司 在薄板连续浇铸设备中提供和更换浇注管的装置
WO1996034713A1 (fr) * 1995-05-05 1996-11-07 Vesuvius France S.A. Dispositif et procede de changement d'un tube de coulee continue de repartiteur d'acierie
FR2733705A1 (fr) * 1995-05-05 1996-11-08 Vesuvius France Sa Dispositif et procede de changement d'un tube de coulee continue de repartiteur d'acierie
US5984153A (en) * 1995-05-05 1999-11-16 Vesuvius France Device and process for changing a continuous casting tube of a distributor of a steel mill
WO1997030807A1 (fr) * 1996-02-22 1997-08-28 Vesuvius France S.A. Panier de coulee equipe d'un changeur de tube et d'une plaque pour ce changeur
FR2745211A1 (fr) * 1996-02-22 1997-08-29 Vesuvius France Sa Repartiteur equipe d'un changeur de tube et plaque pour le changeur de tube
AU731336B2 (en) * 1996-02-22 2001-03-29 Vesuvius France S.A. Tundish equipped with a tube changer and plate for the tube changer
US6227421B1 (en) 1996-02-22 2001-05-08 Vesuvius Crucible Company Tundish equipped with a tube changer and plate for the tube changer

Also Published As

Publication number Publication date
DE59101591D1 (de) 1994-06-16
IT9019375A0 (it) 1990-02-15
ATE105522T1 (de) 1994-05-15
IT1238623B (it) 1993-08-18
IT9019375A1 (it) 1991-08-16
EP0442515B1 (fr) 1994-05-11

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