EP1090261B1 - Tiltable light-arc furnace - Google Patents
Tiltable light-arc furnace Download PDFInfo
- Publication number
- EP1090261B1 EP1090261B1 EP99926365A EP99926365A EP1090261B1 EP 1090261 B1 EP1090261 B1 EP 1090261B1 EP 99926365 A EP99926365 A EP 99926365A EP 99926365 A EP99926365 A EP 99926365A EP 1090261 B1 EP1090261 B1 EP 1090261B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- platform
- cradle
- vessel
- portal
- arc furnace
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/06—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces with movable working chambers or hearths, e.g. tiltable, oscillating or describing a composed movement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces heated electrically, with or without any other source of heat
- F27B3/085—Arc furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/06—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces with movable working chambers or hearths, e.g. tiltable, oscillating or describing a composed movement
- F27B3/065—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces with movable working chambers or hearths, e.g. tiltable, oscillating or describing a composed movement tiltable
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/08—Heating by electric discharge, e.g. arc discharge
Definitions
- the invention relates to a tiltable arc furnace, in which a furnace vessel and a Portal for an electrode lifting and swiveling device on a platform of a a tilting furnace cradle are arranged, the three at a distance from each other arranged, parallel weighing runners each running on a runway contains, the furnace vessel on a first lying between two cradle runners Platform part (vascular platform part) and the portal on a separate outside of this Cradle skid lying second platform part (portal platform part) is arranged, the by the tilting device in synchronism with the vessel platform part carrying the furnace vessel is tiltable.
- Modern furnaces have a wide variety of designs for arc furnaces Variant with a common furnace platform or furnace platform for the vessel and portal largely enforced.
- the furnace platform also carries the portal with the electrode guide columns.
- the entire furnace is by means of a tilting device, e.g. B. cylinder over a Cradle, tiltable ..
- the cradle runners are guided on a runway.
- the oven usually has two cradle runners and thus two runways that are parallel to the tilt direction stand on stable foundations.
- the geometry of the cradle and runway determines the tilting movement of the furnace vessel.
- the one between the vessel and the portal Main runway has about 60% to 70% of the total because of the overhanging portal part Bear vertical load.
- FR-855 303 A has disclosed a tilting arc furnace in which the overhanging. part of the platform supporting the portal on the outside by a third weighing sector is supported, so that the continuous weighing platform on three parallel weighing sectors. This leads to a statically indefinite load transfer.
- a tilting arc furnace in which the electrode portal is arranged on a cradle separate from the furnace cradle.
- the either can be coupled to the furnace cradle by a first bolt - this is intended for the small tilting movements when deslagging - or that by means of a second bolt can be fixed to a fixed bearing.
- the latter possibility is provided in order to prevent the furnace vessel from being strongly tilted when tapping the electrodes must be tilted, which leads to electrode breaks leads.
- the electrodes are pulled out of the vessel beforehand and the separate cradle fixed to the fixed bearing by means of the second bolt.
- a tiltable arc furnace of the type mentioned in the introduction configured that the two platform parts by at least one hinge joint are connected, the axis of rotation parallel to the cutting line between a Platform level and the level in which a cradle skid lies, runs.
- the solution according to the invention can be implemented in existing furnaces if, for example the portal must be renewed. The downtimes can then be significant be reduced. It is also possible to start with the platform without any problems Portal and later, postponed, to rebuild the platform with the furnace vessel. Becomes the solution according to the invention implemented in a new installation is the later one Replacing the portal and / or vessel is much easier.
- An additional tilting device can be attached to the portal platform the main tilting device works synchronously.
- 1 denotes the vessel platform part on which the furnace vessel 2 is arranged with 3 the portal platform part on which the portal 4 is arranged.
- the axis of rotation 5 of the portal 4 is arranged eccentrically to the electrode support arms 6 which wear the electrodes 7.
- 8 provides a separate pin for lifting and swiveling of the vessel lid 9.
- 10 is the work door and 11 is an eccentric floor cut.
- the Platform parts 1 and 3 are separated by a joint 12 and by hinge joints 13 connected. 14 is a stop.
- the bearing 15 for the portal can also be seen, likewise the two cradle runners 16 with the associated run-off tracks 17 for the vascular platform part 1, which are attached to foundations 18.
- the portal platform part 3 is supported on one of the cradle runners 16 and a further cradle runners 20 with a run-off track 21 from.
- the runway 21 is on a foundation 22.
- With 23 are flexible cables for the Power supply designated.
- the axis of rotation 19 of the hinge joints 13 runs parallel to the line of intersection between one Platform level, for example that formed by the top of the vascular platform 1 Level and the level in which a cradle skid 16 or 20 lies. With linear runways 17 and 21 thus the axis of rotation 19 runs parallel to these run-off tracks, when the platform is in the horizontal position.
- hinge joints 13 adjacent to the lower edges 24th and 25 of the mutually facing edge sides 26 and 27 of the platform parts 1 and 3 are arranged.
- the hinge joints 13 are through interlocking, with eyelets 28th and 29 provided tab-shaped projections 30 and 31 formed on the each other facing edge sides 26 and 27 of the platform parts 1 and 3 attached and by Pivot bolts 32 are rotatably connected to one another.
- the two hinge joints 13 are in the outer regions the edge side 26 or 27, d. H. near the side edges 33 and 34 of the edge sides provided while the stop 14 is in the central region.
- the Stop 14 is, as shown in FIGS. 5 and 6, by opposite stop pieces 35 and 36 formed, the abutment surfaces in furnace operation, d. H. if the vessel lid 9 rests on the furnace vessel 2, have a distance of 1 to 2 mm. Through this Gap is a statically defined load distribution over the three foundations over the three Weighing skids 16 and 20 guaranteed. In order to lift the vessel lid 9 through the Limit the load shift to the portal platform part 3 caused deflection the stop 14 is provided. It is located adjacent to the top edges 37 and 38, respectively the mutually facing edge sides 26 and 27 of the platform parts 1 and 3 approximately in middle area of the edge pages 26 and 27.
- the entire platform can be tilted.
- the pivot pins 32 of the hinge joints 13, which are required to tilt the portal platform part 3 Transfer forces.
- the hinge joints 13 are therefore formed so that the tab-shaped projections 31 arranged in pairs engage tab-shaped projections 30.
- the different Thermal expansion of the vascular platform part 1 and portal platform part 3 is a corresponding one Game in the axial direction of the pivot pin 32 are taken into account.
- the other hinge joint is designed as a plain bearing, in which the movement in the axial direction of the pivot pin 32 is not limited.
- the portal platform 3 via the hinge joints 13 and the guide must be tilted through the side stops 39 and 40. It is also possible to provide a further auxiliary tipping device, which on the portal platform part 3 attacks. In this case, the two tilting devices must be actuated synchronously be assured.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Details (AREA)
- Discharge Heating (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Special Wing (AREA)
Abstract
Description
Die Erfindung betrifft einen kippbaren Lichtbogenofen, bei dem ein Ofengefäß und ein Portal für eine Elektrodenhub- und Schwenkvorrichtung auf einer Plattform einer mittels einer Kippvorrichtung kippbaren Ofenwiege angeordnet sind, die drei im Abstand voneinander angeordnete, jeweils auf einer Ablaufbahn ablaufende parallele Wiegenkufen enthält, wobei das Ofengefäß auf einem zwischen zwei Wiegenkufen liegenden ersten Plattformteil (Gefäßplattformteil) und das Portal auf einem separaten außerhalb dieser Wiegenkufen liegenden zweiten Plattformteil (Portalplattformteil) angeordnet ist, der durch die Kippvorrichtung synchron mit dem das Ofengefäß tragenden Gefäßplattformteil kippbar ist.The invention relates to a tiltable arc furnace, in which a furnace vessel and a Portal for an electrode lifting and swiveling device on a platform of a a tilting furnace cradle are arranged, the three at a distance from each other arranged, parallel weighing runners each running on a runway contains, the furnace vessel on a first lying between two cradle runners Platform part (vascular platform part) and the portal on a separate outside of this Cradle skid lying second platform part (portal platform part) is arranged, the by the tilting device in synchronism with the vessel platform part carrying the furnace vessel is tiltable.
Von den verschiedensten Bauarten für Lichtbogenöfen hat sich bei modernen Öfen die Variante mit gemeinsamer Ofenbühne bzw. Ofenplattform für Gefäß und Portal weitgehend durchgesetzt. Die Ofenplattform trägt also auch das Portal mit den Elektrodenführungssäulen. dem Deckelhubwerk und den dazugehörenden Schwenk- und Antriebsmechanismen. Der gesamte Ofen ist mittels einer Kippvorrichtung, z. B. Zylinder über eine Wiege, kippbar..Dabei werden die Wiegenkufen auf einer Ablaufbahn geführt. Der Ofen hat üblicherweise zwei Wiegenkufen und somit zwei Ablaufbahnen, die parallel zur Kipprichtung auf stabilen Fundamenten stehen. Die Geometrie von Wiege und Ablaufbahn bestimmt die Kippbewegung des Ofengefäßes. Die zwischen Gefäß und Portal liegende Hauptablaufbahn hat wegen des überhängenden Portalteils ca. 60 % bis 70 % der gesamten Vertikallast zu tragen.Modern furnaces have a wide variety of designs for arc furnaces Variant with a common furnace platform or furnace platform for the vessel and portal largely enforced. The furnace platform also carries the portal with the electrode guide columns. the lid lifting mechanism and the associated swivel and drive mechanisms. The entire furnace is by means of a tilting device, e.g. B. cylinder over a Cradle, tiltable .. The cradle runners are guided on a runway. The oven usually has two cradle runners and thus two runways that are parallel to the tilt direction stand on stable foundations. The geometry of the cradle and runway determines the tilting movement of the furnace vessel. The one between the vessel and the portal Main runway has about 60% to 70% of the total because of the overhanging portal part Bear vertical load.
Durch die FR-855 303 A ist ein kippbarer Lichtbogenofen bekannt geworden, bei dem der überhängende. das Portal tragende Teil der Plattform an der Außenseite durch einen dritten Wiegesektor unterstützt ist, so daß sich die durchgehende Wiegenplattform auf drei parallelen Wiegesektoren abstützt. Dies führt zu einer statisch unbestimmten Lasteinleitung.FR-855 303 A has disclosed a tilting arc furnace in which the overhanging. part of the platform supporting the portal on the outside by a third weighing sector is supported, so that the continuous weighing platform on three parallel weighing sectors. This leads to a statically indefinite load transfer.
Um den Lagersitz für das Portal zu bearbeiten sind Spezialmaschinen erforderlich, denn diese Bearbeitung kann wegen möglichen Verzugs erst nach dem Schweißen vorgenommen werden.Special machines are required to machine the bearing seat for the portal, because this processing can only be carried out after welding because of possible delay become.
Während des Ofenbetriebes kann es wegen unterschiedlicher Wärmebeaufschlagung und Spannungen innerhalb der Plattform zu Verzug kommen. Das hat beispielsweise einen negativen Einfluß auf die Korrektheit der Elektrodenfahrwege und deren Regelung. Eine Korrektur des Verzugs ist ohne kostspielige und zeitraubende Montage von Gefäß, Portal und Bühne nicht möglich.During operation of the furnace, it can be due to different heat loads and Tensions within the platform are delayed. For example, that has one negative influence on the correctness of the electrode travel paths and their regulation. A Correction of the warp is without costly and time-consuming assembly of the vessel or portal and stage not possible.
Bei der Modernisierung bestehender Öfen wird es nötig, ein neues Portal für eine bessere und schnellere Elektrodenregelung zu installieren. Das Richten und Anpassen der Plattform ist dann sehr aufwendig.When modernizing existing furnaces, it becomes necessary to create a new portal for a better one and to install faster electrode control. Aligning and adjusting the platform is then very expensive.
Durch die DE-AS 11 08 830 ist ein kippbarer Lichtbogenofen bekannt geworden, bei dem das Elektrodenportal auf einer zur Ofenwiege separaten Wiege angeordnet ist. die entweder durch einen ersten Bolzen mit der Ofenwiege gekoppelt werden kann - dies ist vorgesehen für die kleinen Kippbewegungen beim Abschlacken - oder die mittels eines zweiten Bolzens an einem ortsfesten Lager fixiert werden kann. Die letztgenannte Möglichkeit ist vorgesehen, um zu verhindern, daß bei starken Kippbewegungen des Ofengefäßes beim Abstechen die Elektroden mitgekippt werden müssen, was zu Elektrodenbrüchen führt. Zum Abstechen werden also vorher die Elektroden aus dem Gefäß gezogen und die separate Wiege am ortsfesten Lager mittels des zweiten Bolzens fixiert.From DE-AS 11 08 830 a tilting arc furnace is known in which the electrode portal is arranged on a cradle separate from the furnace cradle. the either can be coupled to the furnace cradle by a first bolt - this is intended for the small tilting movements when deslagging - or that by means of a second bolt can be fixed to a fixed bearing. The latter possibility is provided in order to prevent the furnace vessel from being strongly tilted when tapping the electrodes must be tilted, which leads to electrode breaks leads. For tapping, the electrodes are pulled out of the vessel beforehand and the separate cradle fixed to the fixed bearing by means of the second bolt.
Gemäß der Erfindung wird ein kippbarer Lichtbogenofen der einleitend genannten Art so ausgestaltet, daß die beiden Plattformteile durch wenigstens ein Scharniergelenk miteinander verbunden sind, dessen Drehachse parallel zur Schnittlinie zwischen einer Plattformebene und der Ebene, in der eine Wiegenkufe liegt, verläuft.According to the invention, a tiltable arc furnace of the type mentioned in the introduction configured that the two platform parts by at least one hinge joint are connected, the axis of rotation parallel to the cutting line between a Platform level and the level in which a cradle skid lies, runs.
Die erfindungsgemäße Lösung kann bei bestehenden Öfen realisiert werden, wenn beispielsweise das Portal erneuert werden muß. Die Stillstandszeiten können dann wesentlich verringert werden. Es ist auch ohne Probleme möglich, zunächst die Plattform mit dem Portal und später, zeitlich verschoben, die Plattform mit dem Ofengefäß umzubauen. Wird die erfindungsgemäße Lösung bei einer Neuinstallation verwirklicht, ist das spätere Auswechseln von Portal und/oder Gefäß wesentlich einfacher.The solution according to the invention can be implemented in existing furnaces if, for example the portal must be renewed. The downtimes can then be significant be reduced. It is also possible to start with the platform without any problems Portal and later, postponed, to rebuild the platform with the furnace vessel. Becomes the solution according to the invention implemented in a new installation is the later one Replacing the portal and / or vessel is much easier.
An der Portalplattform kann eine zusätzliche Kippvorrichtung angebracht werden, die mit der Hauptkippvorrichtung synchron arbeitet.An additional tilting device can be attached to the portal platform the main tilting device works synchronously.
Im folgenden wird der erfindungsgemäße Lichtbogenofen durch ein Ausführungsbeispiel anhand von sechs Figuren näher erläutert. Es zeigen:
- Fig. 1
- einen kippbaren Lichtbogenofen in einer Draufsicht;
- Fig. 2
- den Lichtbogenofen in einer Frontansicht, teilweise geschnitten;
- Fig. 3
- die Verbindung der Plattformteile in perspektivischer Darstellung;
- Fig. 4
- einen Abschnitt des Gefäßplattformteils in perspektivischer Darstellung;
- Fig. 5
- in einer Frontansicht einen vergrößerten Ausschnitt, teilweise im Schnitt, die Verbindung zwischen den beiden Plattformteilen durch ein Scharniergelenk. und
- Fig. 6
- in einer Draufsicht einen vergrößerten Ausschnitt des Anschlags und der Führung zwischen den beiden Plattformteilen.
- Fig. 1
- a tiltable arc furnace in a plan view;
- Fig. 2
- the arc furnace in a front view, partially cut;
- Fig. 3
- the connection of the platform parts in perspective;
- Fig. 4
- a portion of the vascular platform part in a perspective view;
- Fig. 5
- in a front view an enlarged section, partly in section, the connection between the two platform parts by a hinge joint. and
- Fig. 6
- a plan view of an enlarged section of the stop and the guide between the two platform parts.
In den Fig. ist mit 1 ist der Gefäßplattformteil bezeichnet, auf dem das Ofengefäß 2
angeordnet ist, mit 3 der Portalplattformteil, auf dem das Portal 4 angeordnet ist. Die
Drehachse 5 des Portals 4 ist exzentrisch zu den Elektrodentragarmen 6 angeordnet, die
die Elektroden 7 tragen. 8 stellt einen separaten Zapfen zum Anheben und Ausschwenken
des Gefäßdeckels 9 dar. 10 ist die Arbeitstür und 11 ein exzentrischer Bodenabstich. Die
Plattformteile 1 und 3 sind durch eine Fuge 12 getrennt und durch Scharniergelenke 13
verbunden. Mit 14 ist ein Anschlag bezeichnet.In the figures, 1 denotes the vessel platform part on which the
In der Frontansicht nach Fig. 2 ist zusätzlich das Lager 15 für das Portal erkennbar,
ebenso die beiden Wiegenkufen 16 mit den zugehörigen Ablaufbahnen 17 für den Gefäßplattformteil
1, die auf Fundamenten 18 befestigt sind. Der Portalplattformteil 3 stützt sich
auf einer der Wiegenkufen 16 und einer weiteren Wiegenkufe 20 mit einer Ablaufbahn 21
ab. Die Ablaufbahn 21 steht auf einem Fundament 22. Mit 23 sind flexible Kabel für die
Stromzufuhr bezeichnet.2, the bearing 15 for the portal can also be seen,
likewise the two
Die perspektivische Darstellung nach Fig. 3 läßt die Ausbildung und Anordnung der
Scharniergelenke 13 sowie die Lage des Anschlages 14 erkennen.3 shows the design and arrangement of the
Recognize hinge joints 13 and the position of the
Die Drehachse 19 der Scharniergelenke 13 verläuft parallel zur Schnittlinie zwischen einer
Plattformebene, also beispielsweise der durch die Oberseite der Gefäßplattform 1 gebildete
Ebene und der Ebene, in der eine Wiegenkufe 16 bzw. 20 liegt. Bei linearen Ablaufbahnen
17 bzw. 21 verläuft damit die Drehachse 19 parallel zu diesen Ablaufbahnen,
wenn sich die Plattform in der Horizontallage befindet.The axis of
Die Fig. 3 bis 5 zeigen, daß die Scharniergelenke 13 benachbart zu den Unterkanten 24
bzw. 25 der einander zugewandten Randseiten 26 bzw. 27 der Plattformteile 1 bzw. 3
angeordnet sind. Die Scharniergelenke 13 sind durch ineinandergreifende, mit Ösen 28
bzw. 29 versehene laschenförmige Vorsprünge 30 bzw. 31 gebildet, die an den einander
zugewandten Randseiten 26 bzw. 27 der Plattformteile 1 bzw. 3 angebracht und durch
Drehbolzen 32 drehbar miteinander verbunden sind.3 to 5 show that the hinge joints 13 adjacent to the lower edges 24th
and 25 of the mutually facing edge sides 26 and 27 of the
Bei dem Ausführungsbeispiel sind die beiden Scharniergelenke 13 in den äußeren Bereichen
der Randseite 26 bzw. 27, d. h. in der Nähe der Seitenkanten 33 und 34 der Randseiten
vorgesehen, während sich der Anschlag 14 im mittleren Bereich befindet. Der
Anschlag 14 wird, wie die Fig. 5 und 6 zeigen, durch gegenüberliegende Anschlagstücke
35 und 36 gebildet, deren Anschlagflächen im Ofenbetrieb, d. h. wenn der Gefäßdeckel
9 auf dem Ofengefäß 2 aufliegt, einen Abstand von 1 bis 2 mm aufweisen. Durch diesen
Spalt ist eine statisch definierte Lastaufteilung auf die drei Fundamente über die drei
Wiegenkufen 16 und 20 gewährleistet. Um die bei Anheben des Gefäßdeckels 9 durch die
Lastverlagerung auf den Portalplattformteil 3 verursachte Durchbiegung zu begrenzen, ist
der Anschlag 14 vorgesehen. Er befindet sich benachbart zu den Oberkanten 37 bzw. 38
der einander zugewandten Randseiten 26 bzw. 27 der Plattformteile 1 bzw. 3 etwa im
mittleren Bereich der Randseiten 26 bzw. 27.In the exemplary embodiment, the two
Mittels einer in den Zeichnungen nicht dargestellten Kippvorrichtung. die am Gefäßportalteil
1 angreift, läßt sich die gesamte Plattform kippen. In diesem Fall müssen die Drehbolzen
32 der Scharniergelenke 13 die zum Mitkippen des Portalplattformteils 3 erforderlichen
Kräfte übertragen. Hierbei und auch im gekippten Zustand werden im Scharniergelenk
Kräfte in Achsrichtung der Drehbolzen wirksam. Die Scharniergelenke 13 sind
deshalb so ausgebildet, daß die laschenförmigen Vorsprünge 31 in paarweise angeordnete
laschenförmige Vorsprünge 30 eingreifen. Hierbei muß allerdings wegen der unterschiedlichen
Wärmeausdehnungen von Gefäßplattformteil 1 und Portalplariformteil 3 ein entsprechendes
Spiel in Achsrichtung der Drehbolzen 32 berücksichtigt werden. Vorzugsweise
wird nur eines der beiden Scharniergelenke als sogenanntes Festlager ausgebildet,
d. h. als Lager, bei dem die Verschiebbarkeit in Achsrichtung des Drehbolzens 32
verhindert ist, während das andere Scharniergelenk als Gleitlager ausgebildet ist, bei dem
die Bewegung in Achsrichtung des Drehbolzens 32 nicht begrenzt ist. By means of a tilting device, not shown in the drawings. that on the vascular portal part
1 attacks, the entire platform can be tilted. In this case the pivot pins
32 of the hinge joints 13, which are required to tilt the
Bei dem beschriebenen Ausführungsbeispiel wird die relative Lage der beiden Plattformteile
in Achsrichtung der Drehbolzen 32 durch Seitenanschläge 39 und 40 festgelegt,
zwischen die das Anschlagstück 36 eingreift. Da sich die durch die Seitenanschläge 39
und 40 sowie das Anschlagstück 36 bewirkte Führung zwischen den Plattformteilen 1 und
3 in der Mitte zwischen den Plattformteilen befindet, wirken sich hier unterschiedliche
Längenänderungen bei unterschiedlicher thermischer Belastung der beiden Plattformteile
minimal aus. Die Führung kann somit mit einem sehr kleinen Spiel von einigen Zehntel
Millimetern eingestellt werden. Zur Einstellung dieses Spiels, wie auch des Abstandes
zwischen den Anschlagstücken 35 und 36 dienen Justierbleche 41.In the described embodiment, the relative position of the two platform parts
fixed in the axial direction of the pivot pins 32 by side stops 39 and 40,
between which the
Bei dem beschriebenen Ausführungsbeispiel ist nur eine Kippvorrichtung im Bereich der
Gefäßplattform 1 vorgesehen, so daß die Portalplattform 3 über die Scharniergelenke 13
und die Führung durch die Seitenanschläge 39 und 40 mitgekippt werden muß. Es ist auch
möglich, eine weitere Hilfskippvorrichtung vorzusehen, die am Portalplattformteil 3
angreift. In diesem Fall muß eine synchrone Betätigung der beiden Kippvorrichtungen
sichergestellt sein.In the described embodiment, there is only one tilting device in the region of the
Vessel platform 1 is provided so that the
Claims (8)
- A tiltable arc furnace in which a furnace vessel (2) and a portal (4) for an electrode lifting and pivoting apparatus are arranged on a platform (1 and 3) of a furnace cradle which is tiltable by means of a tilting apparatus and which includes three mutually spaced parallel cradle runner skids (16, 20) which each run on a respective support path (17, 21), wherein the furnace vessel (2) is arranged on a vessel platform portion (1) which is between two cradle runner skids (16) and the portal (4) is arranged on a separate portal platform portion (3) which is outside said cradle runner skids (16) and which is tiltable by the tilting apparatus synchronously with the vessel platform portion (1) carrying the furnace vessel (2), characterized in that
the two platform portions (1, 3) are connected together by at least one hinge pivot (13) whose axis of rotation (19) extends parallel to the intersection line between a platform plane and the plane in which a cradle runner skid (16, 20) lies. - An arc furnace according to claim 1 characterized in that besides the electrode lifting and pivoting apparatus the portal platform portion (3) also carries a cover lifting and pivoting apparatus.
- An arc furnace according to claim 1 or claim 2 characterized in that the platform portions (1, 3) have mutually facing edge sides (26, 27) with lower edges (24, 25) and upper edges (37, 38) and at least one hinge pivot (13) is arranged adjacent to the lower edges (24, 25) of the platform portions (1, 3).
- An arc furnace according to one of claims 1 to 3 characterized in that the hinge pivot (13) is formed by mutually interengaging plate-shaped projections (30, 31) which are provided with eyes (28, 29) and which are mounted to the mutually facing edge sides (26, 27) of the platform portions (1, 3) and are connected together rotatably by pivot pins (32).
- An arc furnace according to one of claims 1 to 4 characterized in that arranged at the mutually facing edge sides (26, 27) of the platform portions (1, 3) in adjacent relationship to the upper edges (37, 38) is at least one abutment (14) which limits the rotary movement of the hinge pivot (13) and which comprises a respective abutment portion (35 and 36 respectively) mounted to respective ones of the mutually facing edge sides (26, 27).
- An arc furnace according to claim 5 characterized in that when the vessel cover (9) is resting on the furnace vessel (2) the abutment surfaces of the abutment portions (35, 36) are at a spacing of the order of magnitude of millimeters.
- An arc furnace according to one of claims 1 to 6 characterized in that a lateral abutment (39, 40, 36) is provided for the purposes of centering the two platform portions (1, 3) in the tilting direction.
- An arc furnace according to one of claims 1 to 7 characterized in that one hinge pivot (13) is in the form of a fixed mounting which prevents displacement in the direction of the axis of rotation (tilt direction) and one hinge pivot is in the form of a sliding mounting which permits displacement in the direction of the axis of rotation (19) of the pivot pin (32).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19823226A DE19823226A1 (en) | 1998-05-25 | 1998-05-25 | Tilting arc furnace |
| DE19823226 | 1998-05-25 | ||
| PCT/EP1999/003523 WO1999061857A1 (en) | 1998-05-25 | 1999-05-21 | Tiltable light-arc furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1090261A1 EP1090261A1 (en) | 2001-04-11 |
| EP1090261B1 true EP1090261B1 (en) | 2002-08-14 |
Family
ID=7868792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99926365A Expired - Lifetime EP1090261B1 (en) | 1998-05-25 | 1999-05-21 | Tiltable light-arc furnace |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US6393043B1 (en) |
| EP (1) | EP1090261B1 (en) |
| KR (1) | KR20010071303A (en) |
| CN (1) | CN1229614C (en) |
| AT (1) | ATE222346T1 (en) |
| AU (1) | AU4365999A (en) |
| BR (1) | BR9910694A (en) |
| CA (1) | CA2332951C (en) |
| DE (2) | DE19823226A1 (en) |
| ES (1) | ES2182532T3 (en) |
| HK (1) | HK1038786A1 (en) |
| PL (1) | PL186668B1 (en) |
| RU (1) | RU2206031C2 (en) |
| TR (1) | TR200003477T2 (en) |
| WO (1) | WO1999061857A1 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6987240B2 (en) * | 2002-04-18 | 2006-01-17 | Applied Materials, Inc. | Thermal flux processing by scanning |
| US7005601B2 (en) * | 2002-04-18 | 2006-02-28 | Applied Materials, Inc. | Thermal flux processing by scanning |
| KR101010492B1 (en) * | 2002-04-18 | 2011-01-21 | 어플라이드 머티어리얼스, 인코포레이티드 | Thermal flux processing by scanning electromagnetic radiation |
| EP1391523B1 (en) * | 2002-08-20 | 2006-05-24 | SMS Demag Aktiengesellschaft | Twin-furnaces unit for steel production |
| DE10355549A1 (en) * | 2003-11-27 | 2005-06-23 | Intracon Gmbh | charging material |
| DE102008012280A1 (en) * | 2008-03-03 | 2009-09-10 | Fuchs Technology Ag | Arc furnace |
| DE102008028966A1 (en) * | 2008-06-18 | 2009-12-24 | Fuchs Technology Holding Ag | Rotary portal for a stove |
| ES2633466T3 (en) * | 2009-03-31 | 2017-09-21 | Sms Group S.P.A. | Electric arc furnace |
| US8651169B2 (en) * | 2010-06-11 | 2014-02-18 | Diavac Limited | Arc melting furnace apparatus |
| JP6051219B2 (en) | 2011-08-15 | 2016-12-27 | コンサーク コーポレイションＣｏｎｓａｒｃ Ｃｏｒｐｏｒａｔｉｏｎ | Electric induction melting assembly |
| DE102011083822B3 (en) * | 2011-09-30 | 2012-12-06 | Siemens Aktiengesellschaft | Arc furnace arrangement i.e. three-phase arc furnace arrangement, has cradle frame fitted on rails with wheels by control of hydraulic cylinder units and main supports so that cradle frame extends out from region within lifting frame |
| DE102012001907A1 (en) | 2012-02-02 | 2013-08-08 | Badische Stahl-Engineering Gmbh | Combined lid lifting and swiveling gear for use in lid handling system of e.g. three-phase alternating current arc furnace, has lid lifting columns comprising receiving recess and support surface for retaining lid |
| US9018108B2 (en) | 2013-01-25 | 2015-04-28 | Applied Materials, Inc. | Low shrinkage dielectric films |
| US10234206B2 (en) | 2014-11-05 | 2019-03-19 | Daido Steel Co., Ltd. | Electric arc furnace |
| US10215494B2 (en) * | 2014-11-05 | 2019-02-26 | Daido Steel Co., Ltd. | Method of operating electric arc furnace |
| CN105300095B (en) * | 2015-11-19 | 2017-11-24 | 中冶赛迪工程技术股份有限公司 | Roller devices and electric arc furnaces roller type fascinate track |
| CN106524747A (en) * | 2016-11-10 | 2017-03-22 | 黑河正兴磨料有限公司 | Closed electrode-circle-fixed electric arc furnace for boron carbide smelting |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE729569C (en) * | 1938-02-11 | 1943-01-07 | Krupp Ag | Arc furnace |
| FR855303A (en) * | 1939-01-23 | 1940-05-08 | Cem Comp Electro Mec | Device for the rapid opening of electric arc furnaces |
| DE1108830B (en) * | 1957-02-04 | 1961-06-15 | Demag Elektrometallurgie Gmbh | Tiltable arc melting furnace |
| US2886617A (en) * | 1957-02-04 | 1959-05-12 | Demag Elektrometallurgie Gmbh | Tiltable arc furnace |
| EP0049926B1 (en) * | 1980-10-09 | 1984-07-25 | BBC Aktiengesellschaft Brown, Boveri & Cie. | Tiltable electric-arc furnace |
| DE8231869U1 (en) * | 1982-11-10 | 1983-10-13 | Mannesmann Ag, 4000 Duesseldorf | Tiltable arc furnace |
| DE3308486C2 (en) * | 1983-03-10 | 1985-04-04 | Mannesmann AG, 4000 Düsseldorf | Arc furnace movable on a tilting frame |
| US5153894A (en) | 1989-03-02 | 1992-10-06 | Fuchs Technology Ag | Smelting plant with removable shaft-like charging material preheater |
| DE3906653A1 (en) * | 1989-03-02 | 1990-09-06 | Fuchs Technology Ag | Melt-down unit with shaft-type charging-material preheater |
| DE3907129A1 (en) * | 1989-03-06 | 1990-09-13 | Fuchs Technology Ag | ARC FURNACE |
| DE4138120A1 (en) * | 1991-11-19 | 1993-05-27 | Fuchs Technology Ag | MELTING UNIT WITH OVEN CRADLE |
| DE4406260A1 (en) * | 1994-02-25 | 1995-08-31 | Fuchs Technology Ag | Operating a melting unit with two furnaces arranged side by side |
-
1998
- 1998-05-25 DE DE19823226A patent/DE19823226A1/en not_active Withdrawn
-
1999
- 1999-05-21 KR KR1020007013057A patent/KR20010071303A/en not_active Application Discontinuation
- 1999-05-21 BR BR9910694-9A patent/BR9910694A/en not_active IP Right Cessation
- 1999-05-21 US US09/700,676 patent/US6393043B1/en not_active Expired - Fee Related
- 1999-05-21 AT AT99926365T patent/ATE222346T1/en not_active IP Right Cessation
- 1999-05-21 RU RU2000133220/02A patent/RU2206031C2/en active
- 1999-05-21 WO PCT/EP1999/003523 patent/WO1999061857A1/en not_active Application Discontinuation
- 1999-05-21 CN CNB998065560A patent/CN1229614C/en not_active Expired - Fee Related
- 1999-05-21 AU AU43659/99A patent/AU4365999A/en not_active Abandoned
- 1999-05-21 EP EP99926365A patent/EP1090261B1/en not_active Expired - Lifetime
- 1999-05-21 ES ES99926365T patent/ES2182532T3/en not_active Expired - Lifetime
- 1999-05-21 TR TR2000/03477T patent/TR200003477T2/en unknown
- 1999-05-21 DE DE59902359T patent/DE59902359D1/en not_active Expired - Fee Related
- 1999-05-21 PL PL99344340A patent/PL186668B1/en not_active IP Right Cessation
- 1999-05-21 CA CA002332951A patent/CA2332951C/en not_active Expired - Fee Related
-
2001
- 2001-12-28 HK HK01109166A patent/HK1038786A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CN1229614C (en) | 2005-11-30 |
| PL344340A1 (en) | 2001-11-05 |
| BR9910694A (en) | 2001-01-30 |
| RU2206031C2 (en) | 2003-06-10 |
| CN1302370A (en) | 2001-07-04 |
| AU4365999A (en) | 1999-12-13 |
| US6393043B1 (en) | 2002-05-21 |
| EP1090261A1 (en) | 2001-04-11 |
| CA2332951A1 (en) | 1999-12-02 |
| TR200003477T2 (en) | 2001-03-21 |
| CA2332951C (en) | 2005-03-15 |
| PL186668B1 (en) | 2004-02-27 |
| DE59902359D1 (en) | 2002-09-19 |
| DE19823226A1 (en) | 1999-12-02 |
| WO1999061857A1 (en) | 1999-12-02 |
| ATE222346T1 (en) | 2002-08-15 |
| HK1038786A1 (en) | 2002-03-28 |
| ES2182532T3 (en) | 2003-03-01 |
| KR20010071303A (en) | 2001-07-28 |
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