EP0056987A2 - Guide arrangement for the insertion and with drawal of a starting bar for a continuous casting installation - Google Patents
Guide arrangement for the insertion and with drawal of a starting bar for a continuous casting installation Download PDFInfo
- Publication number
- EP0056987A2 EP0056987A2 EP82100424A EP82100424A EP0056987A2 EP 0056987 A2 EP0056987 A2 EP 0056987A2 EP 82100424 A EP82100424 A EP 82100424A EP 82100424 A EP82100424 A EP 82100424A EP 0056987 A2 EP0056987 A2 EP 0056987A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- strand
- continuous casting
- cold
- cold strand
- guide
- 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.)
- Withdrawn
Links
- 238000009749 continuous casting Methods 0.000 title claims description 7
- 238000009434 installation Methods 0.000 title claims description 3
- 230000037431 insertion Effects 0.000 title 1
- 238000003780 insertion Methods 0.000 title 1
- 238000005266 casting Methods 0.000 description 13
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
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
- B22D11/08—Accessories for starting the casting procedure
- B22D11/085—Means for storing or introducing the starter bars in the moulds
Definitions
- the invention relates to a guide device for inserting and withdrawing a cold strand into or out of a continuous casting mold or strand guide of a continuous casting installation, the cold strand being guided by one or more rails running parallel to the casting direction.
- the bottom of a continuous casting mold must be closed by means of a cold strand before the start of casting.
- Liquid steel is then poured into the mold, which is closed at the bottom, and after a solid strand start head has been formed, which is positively connected to the cold strand, the withdrawal of the cold strand and thus the pulling out of the casting strand is started.
- the cold strand is separated from the warm strand and, in most known machines, is pushed onto an auxiliary rail by deflection.
- the device described has the disadvantage that it can only be used for sheet-fed systems and, on the other hand, only allows the cold strand to be pivoted out of the strand guide at a specific point along the rail.
- a device according to the invention avoids this disadvantage. It is suitable for use in a casting plant with a straight mold for billets or blooms in a vertical system with or without bending the strand and has a design according to which the cold strand is guided by a carriage that runs on rails that run parallel to the strand guide , moves, and is characterized in that the rails have an area that can be pivoted about an axis.
- the device according to the invention has the advantage that it can be used on all types of continuous casting plants with a straight or curved mold with or without bending the strand, and that, depending on the choice, the cold strand can be cleanly separated from the warm strand at different strand heights.
- a straight mold 1 is shown at the time of the start of pouring, wherein it is closed at the bottom by means of the cold strand 2.
- liquid steel is then poured into the mold 1 from a pan (not shown) via a distributor vessel.
- support and guide rollers 3 are shown, which are arranged immediately below the mold, where the solidification has not yet progressed, at a relatively small distance from one another and further and further below each other.
- the cold strand 2 is guided by means of an arm 6 from a carriage 5 which can move by means of rollers 7 along a straight rail which extends parallel to the strand guide 4 and which consists of two parts 8 and 9, which in their working position aligned with one another, the upper part 8 being fixed in its position, and the lower part 9 being able to be pivoted by means of a hydraulic cylinder 11 about a pivot point 10 located below the separation point between the two parts 8 and 9.
- This pivot point and the rear point of attack of the cylinder 11 are firmly connected to the supporting structure of the casting system.
- the carriage 5 can be driven by means of a remote-controlled electric motor, not shown.
- the rail parts 8 and 9 are in the aligned position and the cold strand 2 is introduced into the mold 1 by raising the carriage 5.
- the carriage is moved downwards along the rail at the casting speed, with the hot strand being pulled along by the cold strand.
- the decoupling of the cold strand can take place as soon as it is no longer guided between the closely spaced rollers 3, but is already in the region of the rollers 3 'which are at a distance from one another which is greater than the length of the cold strand , which is about 1 m.
- the cold strand 2 which is connected to the carriage 5 via the arm 6, is guided over the rollers 3.
- the arm 6 is guided from the carriage 5 between two rollers at 90 o to each other.
- the four rollers 3 are rotatably mounted on fixed axes 21 by means of roller bearings 12, the axes 21 being seated on bearings 13 fixed to the building.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
Die Erfindung betrifft eine Führungseinrichtung zum Einführen und Ausziehen eines Kaltstranges in eine bzw. aus einer Stranggiesskokille bzw. Strangführung einer Stranggiessanlage, wobei der Kaltstrang von einer oder mehreren parallel zur Giessrichtung verlaufenden Schienen geführt ist.The invention relates to a guide device for inserting and withdrawing a cold strand into or out of a continuous casting mold or strand guide of a continuous casting installation, the cold strand being guided by one or more rails running parallel to the casting direction.
Bekanntlich muss der Boden einer Stranggiesskokille vor dem Giessbeginn mittels eines Kaltstranges verschlossen werden. Hierauf wird flüssiger Stahl in die unten verschlossene Kokille gegossen und nachdem sich ein fester Stranganfangskopf gebildet hat, der mit dem Kaltstrang formschlüssig verbunden ist, wird mit dem Rückzug des Kaltstranges und damit mit dem Ausziehen des Giessstranges begonnen. An einem bestimmten Punkt wird der Kaltstrang vom Warmstrang getrennt und bei den meisten bekannten Maschinen durch Ablenken auf eine Nebenschiene geschoben.As is known, the bottom of a continuous casting mold must be closed by means of a cold strand before the start of casting. Liquid steel is then poured into the mold, which is closed at the bottom, and after a solid strand start head has been formed, which is positively connected to the cold strand, the withdrawal of the cold strand and thus the pulling out of the casting strand is started. At a certain point, the cold strand is separated from the warm strand and, in most known machines, is pushed onto an auxiliary rail by deflection.
Im Fall von Brammenanlagen ist es speziell wegen des ferrostatischen Druckes notwendig, den Warmstrang während seines ganzen Erstarrungsweges mittels Stützrollen zu halten, welche relativ nahe aneinander angeordnet sind. Im anderen Fall, beim Giessen von Knüppeln oder Vorblöcken, welche wesentlich kleinere Querschnitte aufweisen, haben diese Rollen nur eine Führungsaufgabe zu erfüllen, wobei sie in Giessrichtung gesehen auch grössere Abstände zueinander aufweisen können. Hierbei ist es möglich, den Kaltstrang bereits dann zu entfernen, wenn die Erstarrung im Warmstrang ausreicht, ihn durch direkten Kraftangriff zu bewegen. Dadurch wird es möglich, mit einem neuen Guss zu beginnen bevor der vorhergehende abgeschlossen ist, das heisst, den Kaltstrang in die Kokille einzuführen, bevor der letzte Teil des Warmstranges beim Giessende die Führung unterhalb der Kaltstrangeinkoppelstelle verlassen hat, wodurch eine erhebliche Verkürzung der Wartezeiten zwischen zwei Güssen erreicht werden kann.In the case of slab plants it is particularly necessary because of the ferrostatic pressure to hold the hot strand throughout its solidification path by means of support rollers which are arranged relatively close to one another. In the other case, when casting billets or blooms which have much smaller cross-sections, these rolls have only one guiding task, and they are also at a greater distance from one another when viewed in the casting direction can have. It is possible to remove the cold strand when the solidification in the warm strand is sufficient to move it by direct force application. This makes it possible to start a new casting before the previous one is completed, i.e. to introduce the cold strand into the mold before the last part of the hot strand has left the guide below the cold strand coupling point at the end of the casting, which considerably reduces the waiting times between two fonts can be achieved.
Eine derartige Einrichtung, welche ein Ausziehen des Kaltstranges in der Mitte der Giesslinie offenbart, ist in der US-PS 3 628 595 für eine Bogenanlage beschrieben, wobei der Kaltstrang von einem Wagen getragen wird, der auf einer parallel zur Strangführung verlaufenden Schiene geführt wird. Diese Schiene, welche kürzer ist als die Strangführung, weist an ihrem stromabliegenden Ende eine Aenderung der Krümmung auf, welche die Aufgabe hat, den Wagen zu kippen und sodann das Wegführen des Kaltstranges durchzuführen. In einer derartigen Vorrichtung, welche speziell für Bogenanlagen ausgelegt ist, wird der Wagen von einem Arm getragen, der einen Kreisbogen um einen fixen Schwenkpunkt beschreibt und der durch seine teleskopische Bauweise in seiner Länge verändert werden kann.Such a device, which discloses pulling out the cold strand in the middle of the casting line, is described in US Pat. No. 3,628,595 for an arch system, the cold strand being carried by a carriage which is guided on a rail running parallel to the strand guide. This rail, which is shorter than the strand guide, has a change in the curvature at its downstream end, which has the task of tipping the wagon and then carrying out the cold strand. In such a device, which is specially designed for archery systems, the carriage is carried by an arm which describes a circular arc around a fixed pivot point and which can be changed in length by its telescopic construction.
Die beschriebene Vorrichtung hat den Nachteil, dass sie nur für Bogenanlagen verwendbar ist und erlaubt zum anderen nur das Herausschwenken des Kaltstranges aus der Strangführung an einer bestimmten Stelle entlang der Schiene.The device described has the disadvantage that it can only be used for sheet-fed systems and, on the other hand, only allows the cold strand to be pivoted out of the strand guide at a specific point along the rail.
Es ist somit nicht möglich, hierbei den Kaltstrang an einer beliebigen Stelle auszukoppeln, welche je nach Giessgeschwindigkeit und Format frei wählbar ist.It is therefore not possible to decouple the cold strand at any point, which can be freely selected depending on the casting speed and format.
Eine erfindungsgemässe Vorrichtung vermeidet diesen Nachteil. Sie ist zum Einsatz in einer Giessanlage mit gerader Kokille für Knüppel oder Vorblöcke in einer Vertikalanlage mit oder ohne Abbiegen des Stranges geeignet und weist eine Bauart auf, nach der der Kaltstrang von einem Wagen geführt wird, der sich auf Schienen, die parallel zur Strangführung verlaufen, bewegt, und er ist dadurch gekennzeichnet, dass die Schienen einen Bereich aufweisen, der um eine Achse geschwenkt werden kann.A device according to the invention avoids this disadvantage. It is suitable for use in a casting plant with a straight mold for billets or blooms in a vertical system with or without bending the strand and has a design according to which the cold strand is guided by a carriage that runs on rails that run parallel to the strand guide , moves, and is characterized in that the rails have an area that can be pivoted about an axis.
Die erfindungsgemässe Einrichtung hat den Vorteil, dass sie auf alle Arten von Stranggiessanlagen mit gerader oder bogenförmiger Kokille mit oder ohne Biegen des Stranges anwendbar ist, und dass mit ihr, je nach Wahl, der Kaltstrang an verschiedenen Stranghöhen vom Warmstrang sauber getrennt werden kann.The device according to the invention has the advantage that it can be used on all types of continuous casting plants with a straight or curved mold with or without bending the strand, and that, depending on the choice, the cold strand can be cleanly separated from the warm strand at different strand heights.
Im folgenden wird die Erfindung anhand der Zeichnung näher erläutert, wobei die
- Fig. 1 eine schematische Seitenansicht einer erfindungsge-mässen Vorrichtung und die
- Fig. 2 einen schematischen Schnitt nach den Linien II - II der Fig. 1 zeigt.
- Fig. 1 is a schematic side view of an Inventive g e-MAESSEN device and the
- Fig. 2 shows a schematic section along the lines II - II of Fig. 1.
In der Fig. 1 ist eine gerade Kokille 1 zum Zeitpunkt des Giessbeginns dargestellt, wobei sie am Boden mittels des Kaltstranges 2 verschlossen ist. In bekannter Weise wird sodann aus einer nicht dargestellten Pfanne über ein Verteilergefäss flüssiger Stahl in die Kokille 1 gegossen.In Fig. 1, a straight mold 1 is shown at the time of the start of pouring, wherein it is closed at the bottom by means of the
Ferner sind Stütz- und Führungsrollen 3 dargestellt, welche unmittelbar unterhalb der Kokille, wo die Erstarrung noch nicht weit fortgeschritten ist, in relativ kleinem Abstand zueinander und weiter unterhalb immer weiter voneinander angeordnet sind.Furthermore, support and
Entsprechend der Erfindung wird der Kaltstrang 2 mittels eines Arms 6 von einem Wagen 5 geführt, welcher sich mittels Rollen 7 entlang einer geraden Schiene bewegen kann, die sich parallel zur Strangführung 4 erstreckt und welche aus zwei Teilen 8 und 9 besteht, welche in ihrer Arbeitsstellung miteinander fluchten, wobei der obere Teil 8 in seiner Position fixiert ist, und der untere Teil 9 mittels eines Hydraulikzylinders 11 um einen unterhalb der Trennstelle zwischen den beiden Teilen 8 und 9 liegenden Drehpunkt 10 verschwenkt werden kann. Dieser Drehpunkt sowie der hintere Angriffspunkt des Zylinders 11 sind mit dem Traggerüst der Giessanlage fest verbunden.According to the invention, the
In bekannter Weise ist der Wagen 5 mittels eines nicht dargestellten fernbedienten Elektromotors antreibbar.In a known manner, the
In gleicher Weise wird der Hydraulikzylinder 11, welcher in beiden Richtungen wirkt, mittels eines bekannten, nicht dargestellten Hydraulikkreises ferngesteuert.In the same way, the
Vor dem Giessbeginn sind die Schienenteile 8 und 9 in fluchtender Stellung und durch Hochfahren des Wagens 5 wird der Kaltstrang 2 in die Kokille 1 eingeführt. Beim Beginn des Ausziehens wird der Wagen entlang der Schiene mit Giessgeschwindigkeit nach unten bewegt, wobei der Warmstrang vom Kaltstrang mitgezogen wird.Before the start of casting, the
Sobald der Kaltstrang einen genügend grossen Abstand von der Kokille entfernt ist, um die Auszugskräfte direkt auf den Warmstrang zu übertragen, wird durch Ansteuern des Zylinders 11 ein Schwenken des Schienenteils 9 um die Achse 10 eingeleitet, wobei der Kaltstrang und der Schienenteil 9 in die strichliert gezeichnete Position 9" gebracht werden. Hierbei bewegen sich Kaltstrang 2 und Wagen 5 vorerst von ihren Ausgangsstellen in die Positionen 2' und 5' und kommen dann in ihre Endstellungen 2" und 5", wobei am Beginn der Schwenkbewegung ein Entkoppeln des Kaltstranges vom Warmstrang stattfindet.As soon as the cold strand is a sufficient distance from the mold to transfer the pull-out forces directly to the warm strand, by actuating the
Hierbei ist ersichtlich, dass die Entkoppelung des Kaltstranges stattfinden kann, sobald er nicht mehr zwischen den eng stehenden Rollen 3 geführt ist, sondern sich bereits im Bereich der Rollen 3' befindet, die einen Abstand voneinander aufweisen, der grösser ist als die Länge des Kaltstranges, welche etwa 1 m beträgt.Here it can be seen that the decoupling of the cold strand can take place as soon as it is no longer guided between the closely spaced
Die Fig. 2 zeigt schematisch wie der Kaltstrang 2, welcher über den Arm 6 mit dem Wagen 5 verbunden ist, über die Rollen 3 hinweg geführt wird. Der Arm 6 ist dabei vom Wagen 5 her zwischen zwei um 90o zueinander stehenden Rollen hindurch geführt. In bekannter Weise sind die vier Rollen 3 auf festen Achsen 21 mittels Rollagern 12 drehbar gelagert, wobei die Achsen 21 auf gebäudefesten Lagern 13 sitzen.2 shows schematically how the
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8101487A FR2498499A1 (en) | 1981-01-27 | 1981-01-27 | MANIKIN GUIDING, EXTRACTING AND INTRODUCING DEVICE FOR CONTINUOUS CASTING MACHINE |
FR8101487 | 1981-01-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0056987A2 true EP0056987A2 (en) | 1982-08-04 |
EP0056987A3 EP0056987A3 (en) | 1982-08-11 |
Family
ID=9254554
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82100424A Withdrawn EP0056987A3 (en) | 1981-01-27 | 1982-01-22 | Guide arrangement for the insertion and with drawal of a starting bar for a continuous casting installation |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0056987A3 (en) |
JP (1) | JPS57142750A (en) |
FR (1) | FR2498499A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3728800A1 (en) * | 1986-08-29 | 1988-03-31 | Outokumpu Oy | METHOD AND DEVICE FOR CHANGING THE SHAPE IN A CASTING MACHINE |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3528486A (en) * | 1967-05-08 | 1970-09-15 | Schloemann Ag | Dummy-bar handling mechanism |
FR1603265A (en) * | 1967-08-22 | 1971-03-29 | Retractable guide for use in continuous casting | |
US3628595A (en) * | 1969-10-22 | 1971-12-21 | Koppers Co Inc | Pivotally mounted starter bar in a continuous casting machine |
FR2156612A1 (en) * | 1971-10-01 | 1973-06-01 | Uss Eng & Consult | |
DE2714338A1 (en) * | 1977-03-31 | 1978-10-05 | Demag Ag | Continuous casting plant for steel billets - using swivel arm to draw dummy chill and billet out of mould |
-
1981
- 1981-01-27 FR FR8101487A patent/FR2498499A1/en active Pending
-
1982
- 1982-01-22 EP EP82100424A patent/EP0056987A3/en not_active Withdrawn
- 1982-01-26 JP JP964882A patent/JPS57142750A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3528486A (en) * | 1967-05-08 | 1970-09-15 | Schloemann Ag | Dummy-bar handling mechanism |
FR1603265A (en) * | 1967-08-22 | 1971-03-29 | Retractable guide for use in continuous casting | |
US3628595A (en) * | 1969-10-22 | 1971-12-21 | Koppers Co Inc | Pivotally mounted starter bar in a continuous casting machine |
FR2156612A1 (en) * | 1971-10-01 | 1973-06-01 | Uss Eng & Consult | |
DE2714338A1 (en) * | 1977-03-31 | 1978-10-05 | Demag Ag | Continuous casting plant for steel billets - using swivel arm to draw dummy chill and billet out of mould |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3728800A1 (en) * | 1986-08-29 | 1988-03-31 | Outokumpu Oy | METHOD AND DEVICE FOR CHANGING THE SHAPE IN A CASTING MACHINE |
Also Published As
Publication number | Publication date |
---|---|
JPS57142750A (en) | 1982-09-03 |
FR2498499A1 (en) | 1982-07-30 |
EP0056987A3 (en) | 1982-08-11 |
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Legal Events
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: CONCAST HOLDING AG |
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18D | Application deemed to be withdrawn |
Effective date: 19830721 |
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Inventor name: PRONKIEWIEZ, JEAN |