WO1998003287A1 - Casting wheel cooling device - Google Patents
Casting wheel cooling device Download PDFInfo
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- WO1998003287A1 WO1998003287A1 PCT/DE1997/001522 DE9701522W WO9803287A1 WO 1998003287 A1 WO1998003287 A1 WO 1998003287A1 DE 9701522 W DE9701522 W DE 9701522W WO 9803287 A1 WO9803287 A1 WO 9803287A1
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- cooling
- ring
- wheel
- casting
- coolant
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- 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
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/068—Accessories therefor for cooling the cast product during its passage through the mould surfaces
Definitions
- the invention relates to a cooling device for a casting wheel for the continuous casting of metals or metal alloys.
- the following solutions are used for the cooling process.
- the cooling process takes place via cooling channels running in the casting wheel, which are supplied with coolant by a guide device fixed in the casting wheel.
- Another solution for cooling consists in the fixed arrangement of spray nozzles, which are preferably arranged inside and partly outside on both sides around the casting wheel and which influence the cooling process by means of a corresponding flow rate control.
- the casting wheel is known to be cooled using a device consisting of nozzle or cooling channels, the cooling device preferably being arranged (recooling of the mold) in the area in which the Conversion zone located from the liquid to the solid state for the melt.
- nozzle systems or channels adapted to the process are installed to control the cooling process. These can only be replaced when the casting machine is at a standstill. For better targeted cooling, additional spray nozzles are sometimes arranged, which cool the sides of the watering coconut.
- This type of cooling has the following disadvantages.
- a cooling depending on the casting speed can only be maintained to a certain degree because the formation of vapor bubbles on the cooling surfaces of the mold and the thermal barrier layer which is formed prevent the cooling effect due to the associated poorer thermal conductivity.
- An increase in the coolant throughput and its impact speed do not significantly improve the cooling.
- the known technical solutions require increased assembly, disassembly and adjustment effort, e.g. when clogging or clogging of nozzles and their flow control by contaminated coolant.
- Another disadvantage is that during an accident, if the masking tape cannot prevent the liquid metal from escaping, there is a risk of an explosion due to the coagulation of the coolant with the melt, particularly in the case of side cooling. This can create a particularly dangerous situation for the operating personnel and the system.
- the coolant speed decreases from the nozzle outlet to the cooling surface.
- any protruding fastening elements and components of the mold carrier prevent the coolant from coming into uniform contact and have a negative influence on its flow conditions. Due to the formation of vapor bubbles and the associated excretion of lime and other minerals as well as scaling of the surface, there is always one deteriorating cooling behavior. It can therefore be assumed that a desired cooling function over the required cooling zone is not possible in every case. This changes the exact distribution of the cooling zones for internal cooling at the same time.
- the invention had for its object to provide a cooling device for a casting wheel for the continuous casting of metals or metal alloys, with which it is possible to vary the coolant pressure and thus the coolant speed independently of the coolant pump within relatively wide limits and the coolant under increased pressure to have a uniform effect on the surface of the mold, which is characterized by a simple structural design and can be adapted to existing casting wheels with little effort.
- the cooling device consists of a cooling wheel, which is arranged within the casting wheel and is acted upon by coolant.
- the cooling effect can be influenced by the flow rate of the coolant, the speed and the direction of rotation of the cooling wheel.
- centrifugal forces act during the rotation of the cooling wheel, by means of which the coolant pressure is increased.
- the boiling point of the coolant is lowered and the formation of vapor bubbles or vapor membranes is thereby reduced or even avoided.
- the cooling wheel consists of an outer cooling ring and a cooling wheel hub, which is connected to the cooling ring via radially extending connecting pipes.
- a central hollow shaft is flanged to the cooling wheel hub and is preferably rotatably mounted in the hollow shaft of the casting wheel.
- a cavity is arranged in the cooling wheel hub and communicates with the interior of the cooling wheel shaft and the connecting pipes.
- the Kuhlring is located in the immediate vicinity of the ring mold and has an annular channel which is provided with outlet openings directed outwards onto the ring mold. All-round limiting disks are attached to the two rare walls of the cooling ring, which laterally limit the space between the mold and the cooling channel.
- Guide vanes can also be attached to the outer circumference of the cooling ring, by means of which forced guidance of the cooling agent is ensured directly as far as the surface of the mold to be cooled.
- the guide vanes also achieve a high speed gradient between the coolant and the mold.
- outwardly directed elastic guide and guide elements can be arranged on the lateral boundary disks. These can be designed such that they rest on the outer walls of the mold when the mold is at rest.
- the guiding and guiding elements can either consist of an elastic material or a spring-loaded ring, which can also be positively controlled. Appropriate control of the adjustable guiding and guiding elements, which can also take place automatically, makes it possible to regulate the outflow amounts of the cooling agent and thereby influence the cooling process.
- the coolant is pumped through the central hollow shaft into the cavity of the cooling wheel hub and from there it goes through the radial connecting pipes into the ring channel of the cooling ring and through the outlet openings on the outer circumference of the cooling sleeve into the space between the cooling wheel and the mold formed by the limiting disks.
- the limiting disks extend almost to the upper end of the mold and are arranged such that the coolant is guided along the entire inward surface of the mold.
- the limiting discs simultaneously reduce the flow of coolant (valve function) and increase the effective pressure, which additionally influences the boiling point of the coolant.
- suitable devices for a targeted flow metering can also be installed in order to enable coolant pressure control in accordance with the solidification requirements of the melt.
- FIG. 2 shows the front view of the casting wheel according to FIG. 1 with several partial sections
- FIG. 3 shows a cross section of an embodiment variant of the casting wheel with positively controlled guiding and guiding elements
- FIG. 4 shows a section of a further embodiment variant of the casting wheel adjustable valves and a throttle for the discharge of the coolant.
- the casting wheel 10 shown in FIG. 1 consists of a front ring disk 17 and a rear ring disk 2, which is designed as a drive disk and is connected to a hollow shaft 16.
- the hollow shaft 16 is set in rotation by a drive unit, not shown.
- the ring mold 1 is fastened, the ring groove 19, into which the molten metal is introduced, can be closed with a cover band 18.
- the cooling device which is designed as a cooling wheel 11, is arranged within the casting wheel 10.
- the cooling wheel 11 consists of an outer cooling ring 6, in which an annular channel 12 is arranged, a cooling wheel hub 8 and connecting tubes 7 arranged in a spoke-like manner between the cooling ring 6 and the cooling wheel hub 8.
- the cooling ring 6 is located in close proximity to the ring mold 1.
- the ring channel 6 has outlet openings 13 for the cooling water distributed on its outer circumference.
- the cooling wheel hub 8 has a hollow chamber 14 and is connected to an inner hollow shaft 9 for the cooling water supply.
- a drive unit not shown, is connected to the inner hollow shaft 9, by means of which the cooling wheel 11 can be set in rotation.
- Suitable bearings 28 are arranged between the hollow shaft 16 of the casting wheel 10 and the inner hollow shaft 9 of the cooling wheel 11.
- the cooling water is passed through the cavity 15 of the inner hollow shaft 9 into the hollow chamber 14 of the cooling wheel hub 8 and flows through the connecting tubes 7 into the ring channel 12 and reaches the outer wall 21 of the ring mold 1 via the outlet openings 13.
- the two outer sides of the cooling ring 6 limiting discs 3 and 4 attached, which rest when the cooling wheel 11 is stationary on the side walls of the ring mold 1 and thus laterally limit the space between the ring mold 1 and the cooling ring 6.
- the limiting disks 3 and 4 abutting on the side walls of the ring mold 1 are elastic at their free ends, so that cooling water can flow along the side walls of the ring mold 1 with a corresponding rotation of the cooling wheel 11.
- Guide vanes 5 are attached to the outer circumference of the cooling ring 6, by means of which the cooling water is forced to the surfaces of the ring mold 1 to be cooled.
- circumferential guide and guide elements 20 are arranged at the free ends of the limiting disks 3 and 4 and are fixed in position by means of springs 25.
- the guide and guide elements 20 pressed outward, and the coolant flow is guided along the outer wall 21 of the ring mold 1.
- FIG. 4 shows an embodiment variant in which the ring mold 1 and the ring groove 19 have a U-shaped contour.
- the limiting disks 3 ', 4' attached to the two outer sides of the cooling ring 6 extend into the upper edge region of the ring mold 1 and do not abut the side walls of the ring mold 1.
- an annular channel 26 is formed between the outer wall of the ring mold 1 and the inside of the lateral disks 2 and 17 which hold the ring mold 1.
- the cooling water is thus subjected to positive guidance and reaches the outermost area of the surfaces of the ring mold 1 to be cooled.
- the cooling effect is further supported by the guide vanes 5 attached to the cooling ring 6, which as a result of the U-shaped ring mold 1 consist of two symmetrical sections 5 'and 5 "are composed.
- the guide vanes 5 are adapted to the outer contour of the adjacent U-shaped contour of the ring mold 1 and are at a short distance from the outer contour of the ring mold 1.
- the cooling water located in the ring channel 26 can have two Various duct systems can be selectively discharged to the outside.To this end, drain holes 27, 27 'are arranged in the side windows 2 and 17 of the casting wheel 10 parallel to the hollow shaft of the casting wheel 10, in which passage valves 22 which can be controlled from the outside are installed centrally above the page n disks 2, 17 arranged control disks, which are not shown in Figure 4. When the passage valves 22 are opened, the cooling liquid can flow out through the bores 24, 24 ′ in the valve receiving flanges 29. In addition, in the adjacent areas between the boundary disks 3 ', 4' and the side disks 17, 2, each on the front and on the rear of the casting wheel 10, drain channels 23 and 23 'acting as a throttle are arranged.
- the two gap-shaped drainage channels 23 and 23 ' are arranged in steps and slightly offset and only ensure the drainage of a small amount of cooling water.
- the gap-shaped outlet channels 23 and 23 ' are formed by corresponding step-shaped recesses in the boundary plates 3', 4 'and the side windows 2, 17.
- the speed of the coolant flow can be controlled in a targeted manner by controlling the cooling water outflows by means of the valves 22.
- This embodiment variant enables very good heat transfer from the surfaces of the ring mold 1 to be cooled to the cooling medium. A considerable amount of heat can be dissipated with high controllable cooling water speeds. Due to the achievable high flow rates, the deposition of components from the Cooling medium greatly reduced or avoided. In the phase of heat transfer, the cooling water is under increased pressure.
- a self-cleaning effect occurs in the cooling bores or outflow openings of the cooling ring 6 as a result of the variable rotational speed of the cooling wheel and the centrifugal forces generated thereby, thereby preventing these bores from becoming clogged.
- the cooling wheel can operate within the casting wheel at speeds of up to 150 revolutions / min. are moved, whereby an additional dynamic pressure increase of the cooling medium by up to approx. 5400 Pa can be achieved with an outer diameter of the ring mold of the casting wheel of 1665 mm.
- the coolant pressure is essentially determined by the dynamic pressure due to the centrifugal forces.
- the static pressure applied by the feed pump only plays a subordinate role.
- the cooling device is also suitable for retrofitting in casting wheels that are already in operation.
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Abstract
Description
Beschreibungdescription
Kühlvorrichtung für ein GießradCooling device for a casting wheel
Die Erfindung betrifft eine Kuhlvorrichtung für ein Gießrad zum kontinuierlichen Gießen von Metallen oder Metallegierungen.The invention relates to a cooling device for a casting wheel for the continuous casting of metals or metal alloys.
Für die kontinuierliche Verarbeitung von Metallen und Metallegierungen ist es allgemein bekannt, aus der Schmelze einen Gießstrang oder ein -band herzustellen und anschließend kontinuierlich auf entsprechenden Anlagen als Draht, Profil oder Barren weiterzuverarbeiten. Zur Einhaltung der geforderten Qualität, wie z.B. der Gefugestruktur und der möglichst gleichmaßigen Verteilung der Korngrößen über den gesamten Querschnitt, ist es erforderlich, das Schmelzgut durch vorgegebene Parameter, insbesondere beim kontinuierlichen Stranggießverfahren, in möglichst kurzer Zeit auf eine vorgeschriebene Temperatur abzukühlen. Zu diesem Zweck werden Gießverfahren mit rotierend arbeitenden Kokillen eingesetzt. Als eines der besonders wirtschaftlichen Verfahren eignet sich eine als Gießrad ausgebildete Kokille, die mit umlaufend eingearbeiteter Gießnut mit bestimmter Form und Größe versehen ist und mittels eines Abdeckbandes teilweise verschlossen wird. Die Ringkokille ist in seitlichen Scheiben des Gießrades befestigt, und eine der Scheiben ist als Antriebsscheibe für das Gießrad ausgebildet. Die Schwierigkeit bei all diesen Verfahren besteht in der Steuerung des Kühlvorganges, um die geforderte Qualität, vor allem bei höheren Gießgeschindigkeiten, einzuhalten.For the continuous processing of metals and metal alloys, it is generally known to produce a casting strand or strip from the melt and then to further process it continuously on appropriate systems as wire, profile or ingots. To maintain the required quality, e.g. Due to the structure of the structure and the distribution of the grain sizes as evenly as possible over the entire cross-section, it is necessary to cool the melting material to a prescribed temperature in the shortest possible time using predetermined parameters, in particular in the continuous continuous casting process. For this purpose, casting processes with rotating molds are used. As one of the particularly economical methods, a mold designed as a casting wheel is suitable, which is provided with a circumferentially integrated casting groove of a certain shape and size and is partially closed by means of a masking tape. The ring mold is fastened in side disks of the casting wheel, and one of the disks is designed as a drive disk for the casting wheel. The difficulty with all of these methods is to control the cooling process in order to maintain the required quality, especially at higher casting speeds.
Gemäß dem bekannten Stand der Technik kommen folgende Losungen für den Kühlvorgang zur Anwendung. Insbesondere bei der Verwendung einer Kokille auf einem Gießrad, welche mittels eines Metallbandes teilweise verschlossen wird, erfolgt der Kühlprozeß über in dem Gießrad verlaufende Kühlkanäle, welche durch eine im Gießrad feststehende Leiteinrichtung mit Kühlmittel versorgt werden. Eine andere Losung zur Kühlung besteht in der festen Anordnung von Spruhdusen, welche vorzugsweise innen und teilweise außen auch beidseitig um das Gießrad angeordnet sind und die durch eine entsprechende Durchflußmengenregelung den Kühlvorgang beeinflussen.According to the known prior art, the following solutions are used for the cooling process. In particular when using a mold on a casting wheel, which is partially closed by means of a metal band, the cooling process takes place via cooling channels running in the casting wheel, which are supplied with coolant by a guide device fixed in the casting wheel. Another solution for cooling consists in the fixed arrangement of spray nozzles, which are preferably arranged inside and partly outside on both sides around the casting wheel and which influence the cooling process by means of a corresponding flow rate control.
Das Gießrad wird bekannterweise mit einer aus Düsen- bzw. aus Kühlkanälen bestehenden Vorrichtung gekühlt, wobei die Kühlvorrichtung vorzugsweise (Ruckkühlung der Kokille) in dem Bereich angeordnet ist, in dem sich die Umwandlungszone vom flussigen zum festen Zustand für die Schmelze befindet. Zur Steuerung des Kuhlprozesses werden in diesem Fall dem Prozeß angepaßte Dusensysteme bzw. Kanäle installiert. Diese sind nur im Stillstand der Gießmaschine austauschbar. Zur besseren gezielten Kühlung sind teilweise zusatzliche Spruhdusen angeordnet, welche die Seiten der Gießkokilie kühlen.The casting wheel is known to be cooled using a device consisting of nozzle or cooling channels, the cooling device preferably being arranged (recooling of the mold) in the area in which the Conversion zone located from the liquid to the solid state for the melt. In this case, nozzle systems or channels adapted to the process are installed to control the cooling process. These can only be replaced when the casting machine is at a standstill. For better targeted cooling, additional spray nozzles are sometimes arranged, which cool the sides of the watering coconut.
Diese Art der Kühlung hat folgende Nachteile. Eine von der Gießgeschwindigkeit abhängende Kühlung laßt sich nur bis zu einem bestimmten Grad einhalten, weil die Dampfblasenbildung an den Kühlflächen der Kokille und die sich bildende thermische Sperrschicht den Kuhleffekt auf Grund der damit verbundenen schlechteren Wärmeleitfähigkeit verhindern. Eine Erhöhung des Kuhlmitteldurchsatzes und deren Auftreffgeschwindigkeit bewirken keine wesentliche Verbesserung der Kühlung. Diese Nachteile haben zur Folge, daß eine Erhöhung der Gießgeschwindigkeit und somit des Produktionsdurchsatzes trotz Erhöhung der Kuhlmittelmenge, ohne die Qualltat und das Endprodukt negativ zu beeinflussen, nicht möglich ist.This type of cooling has the following disadvantages. A cooling depending on the casting speed can only be maintained to a certain degree because the formation of vapor bubbles on the cooling surfaces of the mold and the thermal barrier layer which is formed prevent the cooling effect due to the associated poorer thermal conductivity. An increase in the coolant throughput and its impact speed do not significantly improve the cooling. As a result of these disadvantages, it is not possible to increase the casting speed and thus the production throughput despite increasing the quantity of coolant without adversely affecting the quality and the end product.
Da die Stromungsgeschwindigkeit zwischen Kuhlmittel und Kuhlflachen für das Kühl- verhalten eine entscheidende Rolle spielt und diese bisher nur mit Hilfe des Kuhlmittel- zufuhrdruckes zu den Düsen und der Kuhlmittelmenge gesteuert werden kann, sind Systeme mit großen Abmessungen und hohem technischen Aufwand erforderlich. Deshalb sind aus ökonomischer Sicht Kuhlsysteme mit geringerem Kuhlmitteldurchsatz und wesentlich verbesserter Kuhlwirkung gunstiger.Since the flow rate between the coolant and the cooling surfaces plays a decisive role in the cooling behavior and, until now, this could only be controlled with the aid of the coolant supply pressure to the nozzles and the quantity of coolant, systems with large dimensions and high technical complexity are required. From an economic point of view, therefore, cooling systems with a lower coolant throughput and significantly improved cooling efficiency are cheaper.
Die bekannten technischen Losungen erfordern einen erhöhten Montage-, Demontage- und Justieraufwand, z.B. beim Zusetzen bzw. Verstopfen von Düsen und deren Durchflußregelung durch verunreinigtes Kuhlmittel.The known technical solutions require increased assembly, disassembly and adjustment effort, e.g. when clogging or clogging of nozzles and their flow control by contaminated coolant.
Ein weiterer Nachteil besteht darin, daß wahrend eines Havariefalles, wenn das Abdeckband ein Austreten des flussigen Metalls nicht verhindern kann, durch das Zusammentreffen von Kuhlmittel mit der Schmelze, insbesondere bei der Seitenkuhlung, die Gefahr einer Explosion besteht. Dadurch kann eine besonders gefährliche Situation für das Bedienpersonal und die Anlage entstehen.Another disadvantage is that during an accident, if the masking tape cannot prevent the liquid metal from escaping, there is a risk of an explosion due to the coagulation of the coolant with the melt, particularly in the case of side cooling. This can create a particularly dangerous situation for the operating personnel and the system.
Die Kühlung der Kokille mittels fest einstellbarer oder regelbarer Düsen erhöht den technologischen Aufwand und verteuert die Anlage.The cooling of the mold by means of fixed or adjustable nozzles increases the technological effort and increases the cost of the system.
Beim Einsatz von Dusensystemen nimmt die Kuhlmittelgeschwindigkeit vom Austritt aus der Düse bis zur Kuhlfläche ab. Ebenso wird durch eventuell hervorstehende Befestigungselemente und Bauteile des Kokillentragers ein gleichmaßiges Auftreffen des Kuhlmittels verhindert und durch seine Stromungsverhältnisse negativ beeinflußt. Durch Dampfblasenbildung und der damit verbundenen Ausscheidung von Kalk und anderen Mineralien sowie Verzunderung der Oberflache, kommt es zu einem immer schlechter werdenden Kühlverhalten. Folglich kann davon ausgegangen werden, daß eine gewünschte Abkühlungsfunktion über die benötigte Kühlzone nicht in jedem Fall möglich ist. Damit erfolgt gleichzeitig eine Veränderung der exakten Kühlzonenaufteilung für die Innenkühlung.When using nozzle systems, the coolant speed decreases from the nozzle outlet to the cooling surface. Likewise, any protruding fastening elements and components of the mold carrier prevent the coolant from coming into uniform contact and have a negative influence on its flow conditions. Due to the formation of vapor bubbles and the associated excretion of lime and other minerals as well as scaling of the surface, there is always one deteriorating cooling behavior. It can therefore be assumed that a desired cooling function over the required cooling zone is not possible in every case. This changes the exact distribution of the cooling zones for internal cooling at the same time.
Der Erfindung lag die Aufgabe zugrunde, eine Kühlvorrichtung für ein Gießrad zum kontinuierlichen Gießen von Metallen oder Metallegierungen zu schaffen, mit der es möglich ist, den Kühlmitteldruck und damit die Kuhlmittelgeschwindigkeit unabhängig von der Kühlmittelpumpe in relativ weiten Grenzen zu variieren und das Kühlmittel unter erhöhtem Druck gleichmäßig auf die Oberfläche der Kokille einwirken zu lassen, die sich durch einen einfachen konstruktiven Aufbau auszeichnet und mit geringem Aufwand an bereits vorhandene Gießräder anpaßbar ist.The invention had for its object to provide a cooling device for a casting wheel for the continuous casting of metals or metal alloys, with which it is possible to vary the coolant pressure and thus the coolant speed independently of the coolant pump within relatively wide limits and the coolant under increased pressure to have a uniform effect on the surface of the mold, which is characterized by a simple structural design and can be adapted to existing casting wheels with little effort.
Erfindungsgemäß wird die Aufgabe durch die im Anspruch 1 angegebenen Merkmale gelöst. Geeignete Ausgestaltungsvarianten sind in den Ansprüchen 2 bis 11 angegeben. Die Kühlvorrichtung besteht aus einem Kühlrad, das innerhalb des Gießrades angeordnet ist und mit Kühlmittel beaufschlagt wird. Die Kühlwirkung ist durch die Durchflußmenge des Kühlmittels, die Drehzahl und die Drehrichtung des Kühlrades beeinflußbar. Infolge der vom Gießrad unabhängigen Drehzahl des Kühlrades, wirken während der Rotation des Kühlrades Zentrifugalkräfte, durch die der Kühlmitteldruck erhöht wird. Infolge des erhöhten Kühlmitteldruckes wird der Siedepunkt des Kühlmittels erniedrigt und dadurch die Bildung von Dampfblasen oder Dampfhäuten verringert oder sogar vermieden. Möglicherweise auftretende kleine Dampfblasen werden infolge der erhöhten Strömungsgeschwindigkeit des Kühlmittels losgerissen und aus dem Kühlsystem abgeführt. Dies führt zu einer Verbesserung des Kühleffektes und damit zu einer Steigerung der Durchsatzgeschwindigkeit der gesamten Anlage. Ein zusätzlicher positiver Nebeneffekt durch die wirkenden Zentrifugalkräfte besteht darin, daß ständig ohne weitere Hilfsmittel Kühlflüssigkeit angesaugt wird und dadurch die Förderpumpe für die Kühlflüssigkeit entlastet wird. Durch die Zentrifugalkräfte entsteht zusätzlich zu dem durch die Förderpumpe erzeugten statischen Kühlmittelzuführdruck noch ein dynamischer Kühlmitteldruck.According to the invention the object is achieved by the features specified in claim 1. Suitable design variants are given in claims 2 to 11. The cooling device consists of a cooling wheel, which is arranged within the casting wheel and is acted upon by coolant. The cooling effect can be influenced by the flow rate of the coolant, the speed and the direction of rotation of the cooling wheel. As a result of the cooling wheel speed, which is independent of the casting wheel, centrifugal forces act during the rotation of the cooling wheel, by means of which the coolant pressure is increased. As a result of the increased coolant pressure, the boiling point of the coolant is lowered and the formation of vapor bubbles or vapor membranes is thereby reduced or even avoided. Small steam bubbles that may occur are torn off due to the increased flow rate of the coolant and are removed from the cooling system. This leads to an improvement in the cooling effect and thus to an increase in the throughput speed of the entire system. An additional positive side effect due to the acting centrifugal forces is that coolant is constantly sucked in without any additional aids, thereby relieving the pressure on the feed pump for the coolant. The centrifugal forces create a dynamic coolant pressure in addition to the static coolant supply pressure generated by the feed pump.
Das Kühlrad besteht aus einem äußeren Kühlring und einer Kühlradnabe, die über radial verlaufende Verbindungsrohre mit dem Kühlring verbunden ist. An der Kühlradnabe ist eine zentrale Hohlwelle angeflanscht, die vorzugsweise in der Hohlwelle des Gießrades drehbar gelagert ist. In der Kühlradnabe ist ein Hohlraum angeordnet, der mit dem Innenraum der Kühlradwelle und den Verbindungsrohren in Verbindung steht. Der Kuhlring befindet sich in unmittelbarer Nahe zu der Ringkokille und weist einen Ringkanal auf, der mit nach außen, auf die Ringkokille gerichteten Austrittsoffnungen versehen ist. An den beiden Seltenwanden des Kuhlringes sind umlaufende Begrenzungsscheiben befestigt, die den Raum zwischen der Kokille und dem Kuhlkanal seitlich begrenzen. Am Außenumfang des Kuhlringes können noch Leitschaufeln angebracht sein, durch die eine Zwangsfuhrung des Kuhlmittels direkt bis an die zu kühlende Flache der Kokille gewahrleistest wird. Durch die Leitschaufeln wird außerdem ein hohes Geschwmdigkeitsgefälle zwischen Kuhlmittel und Kokille erreicht. Zusätzlich können an den seitlichen Begrenzungsscheiben nach außen gerichtete elastische Leit- und Fuhrungselemente angeordnet sein. Diese können so ausgebildet sein, daß sie im Ruhezustand der Kokille an den Außenwanden der Kokille anliegen. Die Leit- und Fuhrungselemente können entweder aus einem elastischen Material oder einem federbelasteten Ring bestehen, der auch zwangsgesteuert werden kann. Durch eine entsprechende Steuerung der verstellbaren Leit- und Fuhrungselemente, die auch automatisch erfolgen kann, ist es möglich, die Abstrommengen des Kuhlmittels zu regulieren und dadurch Einfluß auf den Kuhlprozeß zu nehmen. Das Kuhlmittel wird mittels einer Pumpe durch die zentrale Hohlwelle in den Hohlraum der Kuhlradnabe gefordert und gelangt von da aus über die radialen Verbindungsrohre in den Ringkanal des Kuhlringes und über die Austrittsoffnungen am Außenumfang des Kuhlrmges in den durch die Begrenzungsscheiben gebildeten Raum zwischen Kuhlrad und Kokille. Die Begrenzungsscheiben reichen bis nahezu an das obere Ende der Kokille und sind so angeordnet, daß das Kuhlmittel an der gesamten nach innen gerichteten Fläche der Kokille entlang gefuhrt wird. Die Begrenzungsscheiben bewirken gleichzeitig eine Drosselung des Kuhlmittelstromes (Ventilfunktion) und eine Erhöhung des wirksamen Druckes, durch den der Siedepunkt des Kuhlmittels noch zusatzlich beeinflußt wird. Im bzw. am Gießrad können zusätzlich auch noch geeignete Einrichtungen für eine gezielte Durchflußmengendosierung eingebaut sein, um eine Kuhlmitteldruckregelung entsprechend den Erstarrungserfordernissen der Schmelze zu ermöglichen.The cooling wheel consists of an outer cooling ring and a cooling wheel hub, which is connected to the cooling ring via radially extending connecting pipes. A central hollow shaft is flanged to the cooling wheel hub and is preferably rotatably mounted in the hollow shaft of the casting wheel. A cavity is arranged in the cooling wheel hub and communicates with the interior of the cooling wheel shaft and the connecting pipes. The Kuhlring is located in the immediate vicinity of the ring mold and has an annular channel which is provided with outlet openings directed outwards onto the ring mold. All-round limiting disks are attached to the two rare walls of the cooling ring, which laterally limit the space between the mold and the cooling channel. Guide vanes can also be attached to the outer circumference of the cooling ring, by means of which forced guidance of the cooling agent is ensured directly as far as the surface of the mold to be cooled. The guide vanes also achieve a high speed gradient between the coolant and the mold. In addition, outwardly directed elastic guide and guide elements can be arranged on the lateral boundary disks. These can be designed such that they rest on the outer walls of the mold when the mold is at rest. The guiding and guiding elements can either consist of an elastic material or a spring-loaded ring, which can also be positively controlled. Appropriate control of the adjustable guiding and guiding elements, which can also take place automatically, makes it possible to regulate the outflow amounts of the cooling agent and thereby influence the cooling process. The coolant is pumped through the central hollow shaft into the cavity of the cooling wheel hub and from there it goes through the radial connecting pipes into the ring channel of the cooling ring and through the outlet openings on the outer circumference of the cooling sleeve into the space between the cooling wheel and the mold formed by the limiting disks. The limiting disks extend almost to the upper end of the mold and are arranged such that the coolant is guided along the entire inward surface of the mold. The limiting discs simultaneously reduce the flow of coolant (valve function) and increase the effective pressure, which additionally influences the boiling point of the coolant. In or on the casting wheel, suitable devices for a targeted flow metering can also be installed in order to enable coolant pressure control in accordance with the solidification requirements of the melt.
Die Erfindung soll nachstehend an einem Beispiel näher erläutert werden. In der zugehörigen Zeichnung zeigenThe invention will be explained in more detail below using an example. Show in the accompanying drawing
Fig. 1 ein Gießrad mit der Kuhlvorrichtung als Halbschnitt,1 is a casting wheel with the cooling device as a half section,
Fig. 2 die Vorderansicht des Gießrades gemäß Fig. 1 mit mehreren Teilschnitten,2 shows the front view of the casting wheel according to FIG. 1 with several partial sections,
Fig. 3 einen Ausschnitt einer Ausfuhrungsvariante des Gießrades mit zwangsgesteuerten Leit- und Fuhrungselementen im Querschnitt und Fig. 4 einen Ausschnitt einer weiteren Ausfuhrungsvariante des Gießrades mit einstellbaren Ventilen und einer Drossel für die Abführung des Kühlmittels.3 shows a cross section of an embodiment variant of the casting wheel with positively controlled guiding and guiding elements, and FIG. 4 shows a section of a further embodiment variant of the casting wheel adjustable valves and a throttle for the discharge of the coolant.
Das in Figur 1 gezeigte Gießrad 10 besteht aus einer vorderen Ringscheibe 17 und einer hinteren Ringscheibe 2, die als Antriebsscheibe ausgebildet und mit einer Hohlwelle 16 verbunden ist. Die Hohlwelle 16 wird über eine nicht näher dargestellte Antriebseinheit in Rotation versetzt. Am Außenumfang der beiden Ringscheiben 2, 17 ist die Ringkokille 1 befestigt, deren Ringnut 19, in die die Metallschmelze eingebracht wird, mit einem Abdeckband 18 verschließbar ist.The casting wheel 10 shown in FIG. 1 consists of a front ring disk 17 and a rear ring disk 2, which is designed as a drive disk and is connected to a hollow shaft 16. The hollow shaft 16 is set in rotation by a drive unit, not shown. On the outer circumference of the two ring disks 2, 17, the ring mold 1 is fastened, the ring groove 19, into which the molten metal is introduced, can be closed with a cover band 18.
Innerhalb des Gießrades 10 ist die Kühlvorrichtung angeordnet, die als Kühlrad 11 ausgebildet ist. Das Kühlrad 11 besteht aus einem äußeren Kühlring 6, in dem ein Ringkanal 12 angeordnet ist, einer Kühlradnabe 8 und speichenartig angeordneten Verbindungsrohren 7 zwischen dem KUhlring 6 und der Kühlradnabe 8. Der Kühlring 6 befindet sich in unmittelbarer Nähe zu der Ringkokille 1. Der Ringkanal 6 hat an seinem Außenumfang verteilte Austrittsoffnungen 13 für das Kühlwasser. Die Kühlradnabe 8 besitzt eine Hohlkammer 14 und ist mit einer inneren Hohlwelle 9 für die Kühlwasserzuführung verbunden. An die innere Hohlwelle 9 ist eine nicht näher dargestellte Antriebseinheit angeschlossen, mittels derer das Kühlrad 11 in Rotation versetzt werden kann. Zwischen der Hohlwelle 16 des Gießrades 10 und der inneren Hohlwelle 9 des Kühlrades 11 sind geeignete Lager 28 angeordnet. Das Kühlwasser wird durch den Hohlraum 15 der inneren Hohlwelle 9 in die Hohlkammer 14 der Kühiradnabe 8 geleitet und strömt durch die Verbindungsrohre 7 in den Ringkanal 12 und gelangt über die Austrittsoffnungen 13 an die Außenwand 21 der Ringkokille 1. Zur Erzielung eines guten Kühleffektes sind an den beiden Außenseiten des Kühlringes 6 Begrenzungsscheiben 3 und 4 befestigt, die bei Stillstand des Kühlrades 11 an den Seitenwänden der Ringkokille 1 anliegen und somit den Raum zwischen der Ringkokille 1 und dem Kühlring 6 seitlich begrenzen. Die an den Seitenwänden der Ringkokille 1 anliegenden Begrenzungsscheiben 3 und 4 sind an ihren freien Enden elastisch ausgebildet, so daß bei entsprechender Rotation des Kühlrades 11 Kühlwasser an den Seitenwänden der Ringkokille 1 entlangströmen kann. Am Außenumfang des KUhlringes 6 sind Leitschaufeln 5 befestigt, durch die eine Zwangsführung des Kühlwassers bis an die zu kühlenden Flächen der Ringkokille 1 bewirkt wird.The cooling device, which is designed as a cooling wheel 11, is arranged within the casting wheel 10. The cooling wheel 11 consists of an outer cooling ring 6, in which an annular channel 12 is arranged, a cooling wheel hub 8 and connecting tubes 7 arranged in a spoke-like manner between the cooling ring 6 and the cooling wheel hub 8. The cooling ring 6 is located in close proximity to the ring mold 1. The ring channel 6 has outlet openings 13 for the cooling water distributed on its outer circumference. The cooling wheel hub 8 has a hollow chamber 14 and is connected to an inner hollow shaft 9 for the cooling water supply. A drive unit, not shown, is connected to the inner hollow shaft 9, by means of which the cooling wheel 11 can be set in rotation. Suitable bearings 28 are arranged between the hollow shaft 16 of the casting wheel 10 and the inner hollow shaft 9 of the cooling wheel 11. The cooling water is passed through the cavity 15 of the inner hollow shaft 9 into the hollow chamber 14 of the cooling wheel hub 8 and flows through the connecting tubes 7 into the ring channel 12 and reaches the outer wall 21 of the ring mold 1 via the outlet openings 13. To achieve a good cooling effect, the two outer sides of the cooling ring 6 limiting discs 3 and 4 attached, which rest when the cooling wheel 11 is stationary on the side walls of the ring mold 1 and thus laterally limit the space between the ring mold 1 and the cooling ring 6. The limiting disks 3 and 4 abutting on the side walls of the ring mold 1 are elastic at their free ends, so that cooling water can flow along the side walls of the ring mold 1 with a corresponding rotation of the cooling wheel 11. Guide vanes 5 are attached to the outer circumference of the cooling ring 6, by means of which the cooling water is forced to the surfaces of the ring mold 1 to be cooled.
Im Vergleich zu der in den Figuren 1 und 2 gezeigten Ausführung sind bei der in Fig.3 dargestellten Ausgestaltung des Kühlrades 11 an den freien Enden der Begrenzungsscheiben 3 und 4 umlaufende Leit- und Führungselemente 20 angeordnet, die mittels Federn 25 lagefixiert sind. Bei anliegendem Kühlmitteldruck werden die Leit- und Führungselemente 20 nach außen gedrückt, und der Kühlmittelstrom wird entlang der Außenwand 21 der Ringkokille 1 geführt.In comparison to the embodiment shown in FIGS. 1 and 2, in the embodiment of the cooling wheel 11 shown in FIG. 3, circumferential guide and guide elements 20 are arranged at the free ends of the limiting disks 3 and 4 and are fixed in position by means of springs 25. When the coolant pressure is applied, the guide and guide elements 20 pressed outward, and the coolant flow is guided along the outer wall 21 of the ring mold 1.
In der Figur 4 ist eine Ausführungsvariante gezeigt, in der die Ringkokille 1 und die Ringnut 19 eine U-förmige Kontur aufweisen. Die an den beiden Außenseiten des Kühlringes 6 befestigten Begrenzungsscheiben 3', 4' erstrecken sich bis in den oberen Randbereich der Ringkokille 1 und liegen nicht an den Seiteπwänden der Ringkokille 1 an. Dadurch wird ein Ringkanal 26 zwischen der Außenwand der Ringkokille 1 und der Innenseite der seitlichen, die Ringkokille 1 aufnehmenden Scheiben 2 und 17 gebildet. Das Kühlwasser wird somit einer Zwangsführung unterworfen und gelangt bis in den äußersten Bereich der zu kühlenden Flächen der Ringkokille 1. Der Kühleffekt wird dabei noch durch die an den Kühlring 6 befestigten Leitschaufeln 5 unterstützt, die infolge der U-förmigen Ringkokille 1 aus zwei symmetrischen Teilstücken 5' und 5" zusammengesetzt sind. In ihrer Außenkontur sind die Leitschaufeln 5 der Außenkontur der benachbarten U-förmigen Kontur der Ringkokille 1 angepaßt und weisen einen geringen Abstand zu der Außenkontur der Ringkokille 1 auf. Das in dem Ringkanal 26 befindliche Kühlwasser kann über zwei verschiedene Kanalsysteme gezielt steuerbar nach außen abgeführt werden. Hierzu sind in den Seitenscheiben 2 und 17 des Gießrades 10 parallel zur Hohlwelle des Gießrades 10 Ablauf bohrungen 27, 27' angeordnet, in denen von außen steuerbare Durchlaßventile 22 eingebaut sind. Die Steuerung der Durchlaßventile 22 erfolgt zentral über jeweils außerhalb der Seitenscheiben 2, 17 angeordnete Steuerscheiben, die in der Figur 4 nicht gezeigt sind. Beim Öffnen der Durchlaßventile 22 kann die Kühlflüssigkeit über die Bohrungen 24, 24' in den Ventilaufnahmeflanschen 29 abströmen. Zusätzlich sind in den benachbarten Bereichen zwischen den Begrenzungsscheiben 3', 4' und den Seitenscheiben 17, 2, jeweils an der Vorder- und an der Hinterseite des Gießrades 10, als Drossel wirkende Ablaufkanäle 23 und 23' angeordnet. Die beiden spaltförmigen Ablaufkanäle 23 und 23' sind stufenförmig und geringfügig versetzt angeordnet und gewährleisten nur den Abfluß einer geringen Kühlwassermenge. Die spaltförmigen Ablaufkanäle 23 und 23' sind durch entsprechende stufenförmige Ausnehmungen in den Begrenzungsscheiben 3', 4' und den Seitenscheiben 2, 17 gebildet. Durch die Steuerung der Kühlwasserabströmungen mittels der Ventile 22 kann die Geschwindigkeit des Kühlmitteldurchflusses gezielt gesteuert werden. Diese Ausführungsvariante ermöglicht einen sehr guten Wärmeübergang von den zu kühlenden Flächen der Ringkokille 1 auf das Kühlmedium. Es kann eine erheblich große Wärmemenge mit hohen regelbaren Geschwindigkeiten des Kühlwassers abgeführt werden. Infolge der erzielbaren hohen Strömungsgeschwindigkeiten wird die Ablagerung von Bestandteilen aus dem Kuhlmedium stark verringert bzw vermieden. In der Phase des Wärmeüberganges befindet sich das Kühlwasser unter erhöhtem Druck. In den Kuhlbohrungen bzw. Ausströmöffnungen des Kuhlringes 6 tritt durch die variierbare Rotationsgeschwindigkeit des Kuhlrades und den dadurch entstehenden Zentrifugalkräften ein Selbstreinigungseffekt auf, wodurch ein Zusetzen dieser Bohrungen verhindert wird. Das Kuhlrad kann innerhalb des Gießrades mit Drehzahlen bis zu 150 Umdrehungen/min. bewegt werden, wodurch eine zusatzliche dynamische Druckerhohung des Kuhlmediums um bis zu ca. 5400 Pa bei einem Außendurchmesser der Ringkokille des Gießrades von 1665 mm erzielt werden kann. Der Kuhlmitteldruck wird dadurch im wesentlichen vom dynamischen Druck infolge der Zentrifugalkräfte bestimmt Der durch die Forderpumpe anliegende statische Druck spielt nur noch eine untergeordnete Rolle. Zwischen der Kokillenvorderseite und der Kokillenhinterseite tritt kein Temperaturgefalle, wie bei bisher bekannten Kuhlsystemen, auf. Ein weiterer Vorteil des vorgeschlagenen Kuhlsystems besteht darin, daß auf eine zusätzliche Seitenkuhlung der Ringkokille 1 verzichtet werden kann. Die Kuhlvorrichtung ist auch für einen nachträglichen Einbau in bereits in Betrieb befindliche Gießrader geignet. FIG. 4 shows an embodiment variant in which the ring mold 1 and the ring groove 19 have a U-shaped contour. The limiting disks 3 ', 4' attached to the two outer sides of the cooling ring 6 extend into the upper edge region of the ring mold 1 and do not abut the side walls of the ring mold 1. As a result, an annular channel 26 is formed between the outer wall of the ring mold 1 and the inside of the lateral disks 2 and 17 which hold the ring mold 1. The cooling water is thus subjected to positive guidance and reaches the outermost area of the surfaces of the ring mold 1 to be cooled. The cooling effect is further supported by the guide vanes 5 attached to the cooling ring 6, which as a result of the U-shaped ring mold 1 consist of two symmetrical sections 5 'and 5 "are composed. In their outer contour, the guide vanes 5 are adapted to the outer contour of the adjacent U-shaped contour of the ring mold 1 and are at a short distance from the outer contour of the ring mold 1. The cooling water located in the ring channel 26 can have two Various duct systems can be selectively discharged to the outside.To this end, drain holes 27, 27 'are arranged in the side windows 2 and 17 of the casting wheel 10 parallel to the hollow shaft of the casting wheel 10, in which passage valves 22 which can be controlled from the outside are installed centrally above the page n disks 2, 17 arranged control disks, which are not shown in Figure 4. When the passage valves 22 are opened, the cooling liquid can flow out through the bores 24, 24 ′ in the valve receiving flanges 29. In addition, in the adjacent areas between the boundary disks 3 ', 4' and the side disks 17, 2, each on the front and on the rear of the casting wheel 10, drain channels 23 and 23 'acting as a throttle are arranged. The two gap-shaped drainage channels 23 and 23 'are arranged in steps and slightly offset and only ensure the drainage of a small amount of cooling water. The gap-shaped outlet channels 23 and 23 'are formed by corresponding step-shaped recesses in the boundary plates 3', 4 'and the side windows 2, 17. The speed of the coolant flow can be controlled in a targeted manner by controlling the cooling water outflows by means of the valves 22. This embodiment variant enables very good heat transfer from the surfaces of the ring mold 1 to be cooled to the cooling medium. A considerable amount of heat can be dissipated with high controllable cooling water speeds. Due to the achievable high flow rates, the deposition of components from the Cooling medium greatly reduced or avoided. In the phase of heat transfer, the cooling water is under increased pressure. A self-cleaning effect occurs in the cooling bores or outflow openings of the cooling ring 6 as a result of the variable rotational speed of the cooling wheel and the centrifugal forces generated thereby, thereby preventing these bores from becoming clogged. The cooling wheel can operate within the casting wheel at speeds of up to 150 revolutions / min. are moved, whereby an additional dynamic pressure increase of the cooling medium by up to approx. 5400 Pa can be achieved with an outer diameter of the ring mold of the casting wheel of 1665 mm. The coolant pressure is essentially determined by the dynamic pressure due to the centrifugal forces. The static pressure applied by the feed pump only plays a subordinate role. There is no temperature gradient between the front side of the mold and the rear side of the mold, as is the case with previously known cooling systems. Another advantage of the proposed cooling system is that there is no need for additional side cooling of the ring mold 1. The cooling device is also suitable for retrofitting in casting wheels that are already in operation.
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU41983/97A AU4198397A (en) | 1996-07-23 | 1997-07-21 | Casting wheel cooling device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19629632.3 | 1996-07-23 | ||
| DE1996129632 DE19629632C2 (en) | 1996-07-23 | 1996-07-23 | Cooling device for a casting wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1998003287A1 true WO1998003287A1 (en) | 1998-01-29 |
Family
ID=7800562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE1997/001522 Ceased WO1998003287A1 (en) | 1996-07-23 | 1997-07-21 | Casting wheel cooling device |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU4198397A (en) |
| DE (1) | DE19629632C2 (en) |
| WO (1) | WO1998003287A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2528925C1 (en) * | 2013-04-10 | 2014-09-20 | Открытое акционерное общество Акционерная холдинговая компания "Всероссийский научно-исследовательский и проектно-конструкторский институт металлургического машиностроения имени академика Целикова" (ОАО АХК "ВНИИМЕТМАШ") | Continuous casting machine with rotary mould |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1163500B (en) * | 1953-07-18 | 1964-02-20 | Ilario Properzi | Device for continuous casting of metals |
| DE1242804B (en) * | 1963-07-13 | 1967-06-22 | Ilario Properzi | Casting wheel for the continuous production of metal bars |
| DE1783135A1 (en) * | 1965-02-12 | 1972-01-05 | Southwire Co | Cooling system for a casting machine |
| US3712366A (en) * | 1971-10-12 | 1973-01-23 | Jones & Laughlin Steel Corp | Method of cooling drum type strip casting apparatus |
| DE3801085A1 (en) * | 1988-01-16 | 1989-07-27 | Thyssen Stahl Ag | Roll for the continuous casting of foil or thin strip, especially from metal |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD89211A (en) * | ||||
| BE542505A (en) * | 1954-11-02 | |||
| US3318369A (en) * | 1964-11-25 | 1967-05-09 | Southwire Co | Cooling system for casting wheel |
| US3464484A (en) * | 1967-04-27 | 1969-09-02 | Southwire Co | Casting machine with removable casting ring |
| FR2359663A1 (en) * | 1976-07-27 | 1978-02-24 | Pechiney Aluminium | HIGH THERMAL CONDUCTIVITY TENSIONAL METAL TAPE FOR CASTING MACHINE |
| IT1126618B (en) * | 1979-12-19 | 1986-05-21 | Giulio Properzi | COOLING DEVICE IN A CONTINUOUS CASTING MACHINE OF THE WHEEL AND BELT TYPE |
| FR2481161A1 (en) * | 1980-04-28 | 1981-10-30 | Pechiney Aluminium | METHOD AND DEVICE FOR THE CONTINUOUS PRODUCTION OF NON-FERROUS NON-FERROUS METALS WITH SELF-BLOCKING STACKS FROM A DRAFT OBTAINED FROM A GROOVED WHEEL CASTING MACHINE |
| WO1984002669A1 (en) * | 1983-01-03 | 1984-07-19 | Southwire Co | Individually controlled spray nozzle system and method of use for caster |
| DE3411734A1 (en) * | 1984-03-30 | 1985-11-14 | Badische Stahlwerke Ag | Apparatus for the continuous casting and rolling of metals, in particular steel |
| DD271808A3 (en) * | 1987-12-24 | 1989-09-20 | Mansfeld Kombinat W Pieck Veb | COOLING SYSTEM FOR A CAST WHEEL |
| DD276587A3 (en) * | 1988-05-27 | 1990-03-07 | Mansfeld Kombinat W Pieck Veb | ANSTROEMFLANK OF A RINGKOKILLE |
| DE4223853A1 (en) * | 1992-07-20 | 1994-01-27 | Gerd Ebert | Sewing thread, process for the production of tear-resistant chain stitch seams and chain stitch seam |
-
1996
- 1996-07-23 DE DE1996129632 patent/DE19629632C2/en not_active Expired - Fee Related
-
1997
- 1997-07-21 WO PCT/DE1997/001522 patent/WO1998003287A1/en not_active Ceased
- 1997-07-21 AU AU41983/97A patent/AU4198397A/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1163500B (en) * | 1953-07-18 | 1964-02-20 | Ilario Properzi | Device for continuous casting of metals |
| DE1242804B (en) * | 1963-07-13 | 1967-06-22 | Ilario Properzi | Casting wheel for the continuous production of metal bars |
| DE1783135A1 (en) * | 1965-02-12 | 1972-01-05 | Southwire Co | Cooling system for a casting machine |
| US3712366A (en) * | 1971-10-12 | 1973-01-23 | Jones & Laughlin Steel Corp | Method of cooling drum type strip casting apparatus |
| DE3801085A1 (en) * | 1988-01-16 | 1989-07-27 | Thyssen Stahl Ag | Roll for the continuous casting of foil or thin strip, especially from metal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2528925C1 (en) * | 2013-04-10 | 2014-09-20 | Открытое акционерное общество Акционерная холдинговая компания "Всероссийский научно-исследовательский и проектно-конструкторский институт металлургического машиностроения имени академика Целикова" (ОАО АХК "ВНИИМЕТМАШ") | Continuous casting machine with rotary mould |
Also Published As
| Publication number | Publication date |
|---|---|
| AU4198397A (en) | 1998-02-10 |
| DE19629632C2 (en) | 1999-01-14 |
| DE19629632A1 (en) | 1998-01-29 |
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