EP0049890A2 - Dispositif tournant pour poches - Google Patents

Dispositif tournant pour poches Download PDF

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Publication number
EP0049890A2
EP0049890A2 EP81108224A EP81108224A EP0049890A2 EP 0049890 A2 EP0049890 A2 EP 0049890A2 EP 81108224 A EP81108224 A EP 81108224A EP 81108224 A EP81108224 A EP 81108224A EP 0049890 A2 EP0049890 A2 EP 0049890A2
Authority
EP
European Patent Office
Prior art keywords
platform
ladle
column
turret
electrodes
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
EP81108224A
Other languages
German (de)
English (en)
Other versions
EP0049890B1 (fr
EP0049890A3 (en
Inventor
Rudolf Hoffmann
Adolf Gustav Zajber
Herbert Hansen
Johannes Drüppel
Klaus Bick
Friedhelm Vennmann
Lothar Dipl.-Ing. Harmsen
Gerd Schweers
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.)
SACK STRANGGIESSTECHNIK GmbH
Benteler Deustchland GmbH
MAN AG
Original Assignee
SACK STRANGGIESSTECHNIK GmbH
Benteler Deustchland GmbH
MAN Maschinenfabrik Augsburg Nuernberg 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 SACK STRANGGIESSTECHNIK GmbH, Benteler Deustchland GmbH, MAN Maschinenfabrik Augsburg Nuernberg AG filed Critical SACK STRANGGIESSTECHNIK GmbH
Priority to AT81108224T priority Critical patent/ATE8115T1/de
Publication of EP0049890A2 publication Critical patent/EP0049890A2/fr
Publication of EP0049890A3 publication Critical patent/EP0049890A3/de
Application granted granted Critical
Publication of EP0049890B1 publication Critical patent/EP0049890B1/fr
Expired 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
    • B22D41/12—Travelling ladles or similar containers; Cars for ladles
    • B22D41/13—Ladle turrets

Definitions

  • the invention relates to a ladle turret for a continuous caster with a fixed pivot column and two pivotable support arms for receiving ladles.
  • the use of a so-called ladle turret is known for the fully continuous supply of a continuous casting plant with molten metal.
  • the ladle turret is usually designed so that it either has a continuous rigid support arm with a receptacle for a ladle at the ends of the arm (DE-PS 1 220 562), or there are two independently pivotable support arms for each ladle provided (DE-PS 1 608 094), wherein the support arms are arranged one above the other on the common pivot column.
  • the molten steel in the ladle especially when it comes to smaller quantities - suffers from disadvantageous temperature losses, which initially occur when the melt is transported from the converter to the Steel extraction hall to the ladle turret.
  • the molten steel experiences a further drop in temperature during the pure casting operation, which can sometimes take up to 60 minutes can.
  • Excessively high temperature losses lead to premature bear formation in the ladle, which no longer enables perfect continuous casting, if, for example, due to low pouring speeds with relatively small strand dimensions and a small number of strands, a not so large pan content is to be poured with the longest possible emptying time.
  • the invention has for its object to provide a device for a ladle turret, which makes it possible that the temperature loss of the melt during transport compensated for a ladle suspended in the support arm of the turret and then kept the melt in a substantially constant temperature range for a long time can be.
  • this object is achieved in that a relative to the pivot column of the ladle turret. Swivel column rotatable platform with a heater for a ladle is arranged.
  • the heating device has a vertical guide column for guiding a height-adjustable boom with clamping devices for at least two electrodes that can be lowered into the interior of a ladle, the current-carrying cables of which are supplied via the boom and freely through the rotatable platform and the interior of the swivel column are laid up to a clamping plate arranged at such a distance from the platform that the twisting of the cables allows the boom or the electrodes to pivot - as seen from the pivoting position of the electrodes associated with the casting position - in both pivoting directions by approximately 180 °.
  • the electrodes are immersed in the melt, after the ladle is in the desired operating position. Due to malfunctions, which may make it necessary to stop the casting, which can occur, for example, in the event of strand breaks or damage to the plug or slide, the ladle must be swiveled as quickly as possible from the casting position to an emergency container. So that the lowered electrode device can also suffer this movement without being damaged, because the boom with the electrodes cannot be moved out of the ladle as quickly as required when the emergency arises, the current-carrying cables are arranged in such a way that a Corresponding twisting is permitted, which ultimately means that the entire device can be pivoted by almost 360.degree .. The pivotability also opens up the possibility, if necessary, of immersing the electrodes in the ladle which has just been taken over by the support arm can thus take place on the swivel path up to the operating position.
  • the eccentric position of the guide pillar means that the cables can be passed centrally through the platform and through the turret swivel pillar to the cable clamping plate.
  • the invention further provides that the rotary drive for the platform consists of an electric motor carried by the platform, the pinion of which meshes with a toothed ring fixed on the swivel column.
  • the lock according to claims 5 and 6 can be of the type that in an emergency, when the platform and ladle support arm must be moved together, a bolt or a wedge a connection between the platform on a signal from the control panel of the system by means of a hydraulic cylinder and the hub of the respective support arm, so that the pivotal movement is synchronized and the platform with the boom is carried along by the ladle support arm. It is also within the Invention, instead of mechanical locking to provide electrical synchronization (equal angular velocities) of the support arms and platform.
  • the exemplary embodiment shows the foundation 1 for a ladle turret, designated overall by 2, of an otherwise not shown continuous caster.
  • the ladle turret 2 has a central pivot column 3 on which the two independently pivotable support arms 4, 5 are arranged by means of hubs 4a, 5a.
  • Each support arm 4, 5 is fork-shaped and can accommodate a ladle 6 or 7.
  • a rotatable platform 8 is arranged on the swivel column 3 of the turret 2.
  • the platform 8 has a heating device denoted by 9, a guide column 10 for a boom 12 which can be raised and lowered being provided off-center on the platform 8.
  • Electrodes 14 are held by clamping devices 13 of the arm 12, which electrodes are lowered into the casting ladle in the casting position in order to heat up or keep the melt warm.
  • the boom 12 is raised and lowered by a cable connection 15 of the boom 12 to a drive motor 16.
  • One end of the cable 15 is fixed to a saddle 18 of the guide column 9. From here, the rope 15 is guided over deflection rollers 19 of the boom 12 or of the saddle 18 to a winding roller 22 of the motor 16 which is also anchored on the platform 8.
  • the rotary drive for the platform itself is attached to the platform.
  • the rotary drive consists of an electric motor 23, the pinion 24 meshes with the toothed ring 25 fixed on the swivel column 3 of the ladle turret 2.
  • To power the electrodes 14 are live cables 26 through the Cantilever 12 laid through the platform 8 and the interior of the pivot column 3 to a clamping plate 27. Since the platform 8 with the boom 12 must cover a swivel path of approximately 180 ° in the event of a possible emergency travel of a ladle support arm 4, 5, the distance to the cable clamping point must be selected such that the twisting of the current-carrying cable 26 pivots in such a manner allows.
  • the support arm 4 in the inoperative position I has just taken over a newly filled ladle 6 from the overhead crane.
  • the content of the ladle 7 in the pouring position II is almost potted, which can be seen from the completely lowered position of the boom 12.
  • the wear on the electrodes which is characterized by erosion, is compensated for with which the electrodes are located above the ladle.
  • the empty ladle is then exchanged for the filled ladle, for which purpose the support arms 4, 5 perform a rotary movement about the pivoting column 3. During this changeover period, the supply of the continuous casting plant with melt via the contents of the intermediate container 28 is maintained.
  • the empty ladle is removed from the overhead crane and the support arm is cleared for the fresh provision of a filled ladle.
  • the electrodes 14 for heating and keeping the melt warm are immersed in the filled ladle and the make-up of the intermediate container 28 is continued for continuous casting.
  • the prescribed correct ladle change can no longer be carried out if an emergency run of the ladle just pouring into position II is necessary in the event of a fault. In such a case, there is no time left to move the electrodes 14 out of the ladle before the support arm is pivoted. It must therefore be ensured that the platform 8 with the superstructures of the heating device is pivoted in synchronism with the support arm during emergency travel 4 or 5.
  • the support arms 4, 5 have fixed brackets 31 and 32, respectively.
  • a cylinder 33 is attached to the platform 8 in the casting position II and, for connecting the platform 8 to the support arm 4 or 5, introduces a bolt, for example a bolt or a wedge, into a not shown groove of the bracket 31 or 32 . It is advantageous that in the pouring position the locking is basically carried out during the duration of the pouring process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Details (AREA)
  • Continuous Casting (AREA)
  • Food-Manufacturing Devices (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
EP81108224A 1980-10-15 1981-10-12 Dispositif tournant pour poches Expired EP0049890B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81108224T ATE8115T1 (de) 1980-10-15 1981-10-12 Pfannendrehturm.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3038876A DE3038876C2 (de) 1980-10-15 1980-10-15 Pfannendrehturm
DE3038876 1980-10-15

Publications (3)

Publication Number Publication Date
EP0049890A2 true EP0049890A2 (fr) 1982-04-21
EP0049890A3 EP0049890A3 (en) 1982-05-12
EP0049890B1 EP0049890B1 (fr) 1984-06-27

Family

ID=6114398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81108224A Expired EP0049890B1 (fr) 1980-10-15 1981-10-12 Dispositif tournant pour poches

Country Status (6)

Country Link
US (1) US4471487A (fr)
EP (1) EP0049890B1 (fr)
JP (1) JPS57168753A (fr)
AT (1) ATE8115T1 (fr)
DE (1) DE3038876C2 (fr)
ES (1) ES506277A0 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4751956A (en) * 1985-10-04 1988-06-21 Danieli & C. Officine Meccaniche Spa Device to handle ladles
US4898227A (en) * 1986-09-25 1990-02-06 Danieli & C. Officine Meccaniche Spa Plant to convert a metallic charge into semifinished products

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1295559B1 (it) * 1997-05-23 1999-05-13 Danieli Off Mecc Sistema di caricamento per forni elettrici ad arco
ATE353980T1 (de) * 2000-02-17 2007-03-15 John A Vallomy Verfahren für die reduktionsbehandlung flüssiger schlacke und filterstaubes eines elektrischen lichtbogenofens

Citations (4)

* 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
DE2135289A1 (fr) * 1970-08-03 1972-03-09
DE2044979B2 (de) * 1970-09-11 1977-12-22 Schloemann-Siemag AG, 4000 Düsseldorf Drehturm fuer giesspfannen
DE2744311A1 (de) * 1976-10-04 1978-04-06 Siderurgie Fse Inst Rech Induktiv beheizte giesspfanne

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1318164A (en) * 1919-10-07 John mcconnell
CH375107A (de) * 1958-09-10 1964-02-15 Beteiligungs & Patentverw Gmbh Vorrichtung zum Giessen von Metallen
FR1309692A (fr) * 1962-01-05 1962-11-16 Lloyds Burton Ltd Agencement pour le chauffage de poches de coulée et autres corps creux
US3894576A (en) * 1974-01-02 1975-07-15 Allis Chalmers Continuous casting apparatus with movable ladles and tundishes
AT340625B (de) * 1976-03-26 1977-12-27 Voest Ag Pfannendrehturm an einer stranggiessanlage
DE2916042B2 (de) * 1979-04-20 1981-07-16 Mannesmann AG, 4000 Düsseldorf Drehturm für zwei unabhängig voneinander heb- und senkbare Gießpfannen

Patent Citations (4)

* 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
DE2135289A1 (fr) * 1970-08-03 1972-03-09
DE2044979B2 (de) * 1970-09-11 1977-12-22 Schloemann-Siemag AG, 4000 Düsseldorf Drehturm fuer giesspfannen
DE2744311A1 (de) * 1976-10-04 1978-04-06 Siderurgie Fse Inst Rech Induktiv beheizte giesspfanne

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4751956A (en) * 1985-10-04 1988-06-21 Danieli & C. Officine Meccaniche Spa Device to handle ladles
US4898227A (en) * 1986-09-25 1990-02-06 Danieli & C. Officine Meccaniche Spa Plant to convert a metallic charge into semifinished products

Also Published As

Publication number Publication date
US4471487A (en) 1984-09-11
DE3038876C2 (de) 1985-02-21
ATE8115T1 (de) 1984-07-15
DE3038876A1 (de) 1982-05-06
JPS6323871B2 (fr) 1988-05-18
EP0049890B1 (fr) 1984-06-27
ES8206231A1 (es) 1982-09-01
JPS57168753A (en) 1982-10-18
EP0049890A3 (en) 1982-05-12
ES506277A0 (es) 1982-09-01

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