EP1467828B1 - Dispositif de coulee - Google Patents

Dispositif de coulee Download PDF

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Publication number
EP1467828B1
EP1467828B1 EP03729517A EP03729517A EP1467828B1 EP 1467828 B1 EP1467828 B1 EP 1467828B1 EP 03729517 A EP03729517 A EP 03729517A EP 03729517 A EP03729517 A EP 03729517A EP 1467828 B1 EP1467828 B1 EP 1467828B1
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EP
European Patent Office
Prior art keywords
intermediate receptacle
melt
nozzle
outlet
level
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
Application number
EP03729517A
Other languages
German (de)
English (en)
Other versions
EP1467828A2 (fr
Inventor
Peter Rauch
Alfred Sigmund
Primus Wohlmuth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ing Rauch Fertigungstechnik GmbH
ThyssenKrupp Steel Europe AG
Original Assignee
Ing Rauch Fertigungstechnik GmbH
ThyssenKrupp Stahl AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ing Rauch Fertigungstechnik GmbH, ThyssenKrupp Stahl AG filed Critical Ing Rauch Fertigungstechnik GmbH
Publication of EP1467828A2 publication Critical patent/EP1467828A2/fr
Application granted granted Critical
Publication of EP1467828B1 publication Critical patent/EP1467828B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal

Definitions

  • the invention relates to a casting device in the sense of claim 1.
  • a casting device with a tundish as an intermediate container has become known, for example, from US Pat. No. 4,482,012, but also from US Pat. No. 4,358,416 or DE-U-76 12 351.
  • metal is conveyed to a tundish arranged above the continuous casting apparatus, the outlet of which is regulated in such a way that a constant level results in the melt container of a continuous casting apparatus.
  • a constant or over time adjustable level is for the quality of the product produced, be it a slab, a billet, bolt, sheet, strip or the final shape near product, or for proper and trouble-free operation of importance.
  • a disadvantage of the known arrangements is that the metal in the tundish can not or can not be easily protected against oxidation. This is particularly disadvantageous when non-ferrous metals are to be cast, such as aluminum or even magnesium. Although it is known to cover the surface of the melt in a tundish with a powder to prevent the ingress of oxygen, but this leads to undesirable impurities. Another disadvantage is the fact that the known arrangement is both investment as well as space-consuming.
  • Casting devices are known from FR-A-1 367 334 and GB-A-988 127 in which a tube of relatively thin and uniform diameter removes the melt from a melt container for delivery to another container.
  • the invention is therefore an object of the invention to ensure a good quality of the product in a simple manner. According to the invention, this is achieved by the entirety of the features of claim 1, as will be explained below.
  • the metering pump protrudes into the intermediate container and pumps the melt from an upstream chamber of the furnace chamber into the intermediate container.
  • This intermediate container is closed and provided with an arrangement for preventing the ingress of air, optionally with at least one supply for protective gas.
  • the intermediate container widens upwards.
  • the nozzle cross-section is relatively narrow, as is the case when casting strips, bands or sheets, there is the risk of undesired solidification of the metal in the nozzle cross-section.
  • tempering is meant both a heating and a cooling device, which latter may be advantageous in some cases.
  • the metering pump has a pumping tube, which extends down to a level in the melt, which is located between the bottom portion of a chamber located in front of the intermediate container and its melting level, because in this way impurities that settle either on the floor or as floating matter exist on the surface of the melt, do not pass through the intermediate container in the product. In this way, so care is taken for a good quality of the product.
  • the invention can be applied not only to (continuous) continuous casting machines but also to the discontinuous casting of semi-finished products such as ingots or finished products.
  • quality of the product from the metallurgical point of view
  • the nozzle with the metering pump using the constant metallostatic pressure (or controlled pump overpressure) is designed so wide that it is the length of a Bulk mold (or other shape) evenly (and quickly) fills.
  • the uniformity of the conditions should play a role in the result in the result of more uniform (fine) grain in the metal of the product.
  • the filling can be carried out from above (ingot mold) or laterally or from below as is practiced for example in low-pressure casting or continuous casting upwards.
  • the feed pump is designed such that the shaft of the metering pump is mounted within a tube forming the intermediate tube and forming the pump tube, the unwanted melt bath movements emanating from its rotating pump shaft can be restricted to the interior of the tube surrounding the shaft and undesired bath movements (eg Whirl) in the intermediate container are avoided as possible.
  • the nozzle is formed as a slit nozzle for dispensing a sheet-like strand, then high-quality sheets can be produced.
  • several casting nozzles can also be arranged next to one another. In such a case, it may be advantageous if the outlet of the intermediate container is connected to a manifold for a plurality of nozzles.
  • the intermediate container equipped with upwardly directed nozzle which is communicatively connected to the pump tube, so that by means of the level control in the exhaust tube adjusting metallostatic pressure a shape from below filled or an upwardly directed strand can be generated, so can placed over suitable Branches a controlled mold filling from below (as in low pressure casting) or a supply of an upward nozzle for the vertical continuous casting up done.
  • the metal pumped up in the pump tube supplies the metallostatic. Pressure for the filling of the mold (s) or the continuous supply of the upwardly pulled strand.
  • the pump tube can be heated if necessary.
  • the mold filling speed can be controlled by controlling the melt level in the Adjust the pump tube (by means of a corresponding, continuously measuring level probe of known design).
  • the bottom of the outlet of the intermediate container is at least partially inclined towards the intermediate container (10), for example at an angle of at most 20 ° or at an angle of at least 4 °.
  • the system offers the great advantage, in an emergency (breakthrough of the mold or the strand), that the melt can be dropped back into the oven almost instantaneously by switching off the pump.
  • This avoids a major drawback of the low-pressure casting powered by gas pressure, which is that opening a valve for lowering the pressure is usually not fast enough, and such emergency valves and associated controls themselves are prone to failure and expensive.
  • the known methods for producing a metallostatic pressure by lifting a communicating with the cavity of the mold melt container have due to the large mass involved (furnace, melt supply) the disadvantage of being very sluggish and expensive.
  • the actual nozzle can be connected directly to its outlet as structurally separate component from the intermediate container, so as to facilitate the setup (orientation of the nozzle at all three or at least two solid angles) and their maintenance.
  • a leveling device is advantageously provided. This setup is also already facilitated if the intermediate container by means of a device such as a carriage, a carriage and / or a lifting device, in at least one spatial axis is adjustable.
  • the intermediate container can also serve to feed a distribution system for Mehrfachstrangguß.
  • This system for a plurality of juxtaposed nozzles can also be designed swiveling and take over the function of the so-called Hottops on individual molds, as is the case in vertical continuous casting downwards in general.
  • a sensor preferably an inductive
  • Such a sensor may simply be a temperature sensor because the temperature of the metal is a measure of its solidification.
  • the sensor can also be an inductive sensor. Such a sensor and its effect is described for another embodiment and application in US-A-5,601,743.
  • Fig. 1 shows a furnace chamber 1 with a crucible 1 a, in which a molten metal 2, in particular a non-ferrous metal, such as aluminum or magnesium, is filled.
  • the molten metal 2 can communicate via an opening 4 with an upstream chamber 3, via which, in a manner known per se, the charging takes place via a feed inlet 30, advantageously until a level N 'sensed by a level sensor 11a is reached.
  • the furnace chamber 1 is provided with a merely indicated heater 5 (or several thereof). This furnace heating can be of any type known per se, for example a gas heater.
  • a line 6 may also serve in a known manner for the supply of a protective gas or for evacuation. Optionally, a plurality of such lines 6, 6a, 6b are provided.
  • the pump tube 7 In the middle of the melt 2 protrudes the pump tube 7 a metering pump 8, the propeller blades 9 are housed in the pump tube 7.
  • This metering pump is preferably designed as a so-called source pump, as it has become known from US-A-5,908,488 or EP-A-1,130,266.
  • the pump tube 7 serves here as an inlet for an intermediate container 10 and is on its upper side preferably in the extended intermediate container 10 via. Also, this intermediate container 10 is closed and may have the line 6 corresponding line 6a and 6b.
  • a level sensor 11 of a known type is connected with its output to a comparison stage 12, which receives a TARGET signal from a desired signal generator 13 and compares it with the actual signal supplied by the sensor 11. Accordingly, the metering pump 8 is controlled via a drive stage 14, i. either the speed of the pump 8 is adjustable or the pump is turned off when reaching the desired level and then restarted as soon as the level has dropped. Should a higher pressure be built up within the intermediate container via the protective gas lines 6a or 6b, then this could be measured either within the intermediate container 10 with the aid of a pressure sensor installed therein or could also be taken directly from the inert gas source into the comparison stage 12, for example as a correction value ,
  • metering pump 8 for rapid change or adjustment of the level N, it is also conceivable to use more than one metering pump 8.
  • metering pump 8 such zuzugesellen, which in case of need, for example, instead of the metering pump 8, is turned on and promotes the molten metal from the intermediate container back into the crucible 1a.
  • the pressure achieved by the metering pump 8 can be controlled or regulated within the intermediate container 10, in particular by means of a control loop with a pressure sensor.
  • the angle ⁇ only needs to extend over a part of the bottom surface 16. It is for example possible to provide a smaller angle ⁇ towards the outlet 15 or (which is not preferable) to make the angle ⁇ decreasing to the left (as shown) to the right (referring to Fig. 1) instead of sloping to the left.
  • the outlet 15 can be inventively either itself as a nozzle of a continuous casting or formed with such. Therefore, a transport device, in particular with at least one roller, is expediently assigned to it for the removal of the cast product. It is preferably a transport belt made of metal, such as copper, driving roller or there are several rollers. A, for example, formed by a side wall lateral boundary for the not quite cooled tape product ensures a relatively smooth boundary of the same. In the case of billets and slabs, of course, other conventional limitations with rollers or sidebands may be used.
  • This transport device is advantageously associated with a cooling device in the form of spray nozzles, and advantageously for the outlet 15, a tempering device 23 is provided with a cooling, but in particular with a heating device.
  • a tempering device 23 is provided with a cooling, but in particular with a heating device.
  • the risk of "Zufrierens" the nozzle 15 is quite given, especially if the continuous casting is to be a sheet and the nozzle 15 is therefore designed as an elongated slot nozzle.
  • the risk can be particularly great if - for economic reasons, the melt in the intermediate container 10 is kept only slightly above the liquidus point, the bottom 16 may optionally be used as Suspendierumble, as described in the German Patent Application 101 00 632 is.
  • a heater 23 may be provided in the region of the outlet 15. It is advantageous not to control this heater by hand, but a sensor, advantageously an inductive sensor, as described for example in US-A-5,601,743, but possibly only provide a temperature sensor 24, since the temperature of the metal or the alloy is also a measure of the state of aggregation.
  • a sensor advantageously an inductive sensor, as described for example in US-A-5,601,743, but possibly only provide a temperature sensor 24, since the temperature of the metal or the alloy is also a measure of the state of aggregation.
  • the windings of two induction coils arranged at an axial distance from one another run around the metal body of the product to be monitored.
  • the output signal of this sensor 24 is supplied to a comparison stage 25, which receives a TARGET signal from a desired signal generator 26.
  • the difference signal thus obtained at the output of the comparison stage 25 is fed to a control stage 31, which controls the heating (or cooling) device 23 accordingly.
  • Fig. 1 a structurally compact device is provided in which a tundish is no longer necessary or formed by the device and in particular its intermediate container 10 itself.
  • the integration of furnace 1 or intermediate container 10 and continuous casting and the access of oxygen difficult or completely obstructed, so that the quality of the product is increased.
  • the whole device is less space and investment consuming.
  • the pouring device may have an attached to the actual outlet 15, separate from the outlet nozzle 15 a, which is sealed from the outlet 15.
  • a supply line for inert gas can also be provided.
  • the nozzle 15a which is lined with ceramic or graphite in a conventional manner for continuous casting equipment, is expediently provided with a lubricant line in order not to leave any "chatter marks" on it in the event of cooling of the surface of the metal strand which is very large compared to the volume.
  • a conventional graphite lubrication can be applied.
  • a nozzle mouth 115 is provided, which is formed by an insert 40 for Mehrfachstrangguß, for example, also of billets or slabs, as is apparent especially from Fig. 2A.
  • the nozzle 115 is provided as a separate or about an axis a swing-off part. So he can, if desired, take over the function of the so-called Hottops on individual molds. It would be conceivable, however, instead of a common intermediate container 10 to provide several of which, for example, each one (or more) associated with the casting billets or slabs and thus connected in parallel. For other applications, however, a series connection of at least two intermediate containers may be advantageous.
  • the pump tube 28 is sealed in the inlet tube piece 7 by means of seals 29 and includes the bearing of the shaft 8a, which may be formed in a manner conventional for such waves.
  • the bearing of the shaft 8a may be formed in a manner conventional for such waves.
  • a plate with such a bearing for the pump shaft 8a may be provided in a conventional manner, a plate with such a bearing for the pump shaft 8a.
  • Fig. 4 shows an embodiment of the intermediate container 10, which allows to promote melt in the pump tube 7 so high that a mold 42, which is connected by a, preferably ascending to form, connecting tube 43 with the pump tube 7, virtually simultaneously can be filled.
  • the measurement of the level N 'in the intermediate container 10 allows it to be completed by appropriate control (as is applied in a similar form for low pressure casting), the mold filling in the desired time course.
  • the level sensor 11 it is advantageous to choose the level sensor 11 so that the level over the entire range of the mold height and possibly beyond (in order to maintain a slight metallostatic back pressure by controlled, the (constant) level holding continued running of the pump can be detected
  • the pump tube can be heated as needed so that the melt does not solidify in it and, after solidification of the melt in the runner section of the mold 42, can freely fall in the pump tube by shutting off the pump motor 8.
  • the solidification of the melt in the runner section of the mold 42 can be accelerated by an onset of the desired cooling device.
  • Fig. 4a shows a similar embodiment as Fig. 4.
  • upward-acting puller 45 is shown in the form of rolls for the molded strand in the mold ,
  • the crucible 1a heated by a heater contains the melt 2, which is first pumped via the suction holes 50 of the pump tube 7 'into the intermediate container 10, which here plays the role of a pressure vessel.
  • the melt 2 rises in the two tubes 43 and 51 high.
  • the level-determining tube 51 is somewhat higher than the mold 42, so that the level therein can be determined either visually or via a level sensor known per se.
  • a compact casting unit is created, with the other parts shown functioning analogously to the embodiments already discussed.
  • this embodiment leads without special precautions to a conclusion of the intermediate container against the ingress of air, without the supply of a protective gas would be required in the intermediate container.
  • the cascade control could first switch on the heater 5 or the intermediate container 10 before it switches on the nozzle 15 or 115.
  • this is not preferred.
  • the provision of sensor means for controlling the outlet temperature of the furnace or continuous casting apparatus manually or automatically is an independent invention which is also applicable where the outlet of the intermediate container does not simultaneously form the nozzle of the continuous casting apparatus ,
  • the actuator is in the present preferred embodiment as described one for controlling the heating coils, but if necessary, a cooling device could be regulated.
  • a magnetic winding provided in the outlet or nozzle region may also impart a static magnetic field to the nozzle orifice in order to achieve lifting of the strand from the inner surface of the nozzle.
  • the dosing pump used in the invention may in itself have any desired structure. However, it is preferred - as shown - to equip this pump with a vertically reaching into the melt shaft. Although suction pumps, piston pumps, etc. could be used, but the illustrated embodiment with a continuously operating pump, in particular a propeller pump is the most advantageous.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)

Claims (8)

  1. Dispositif de coulée, qui comprend
    a) au moins un récipient intermédiaire (10) fermé pour une fonte métallique, formé comme une chambre d'un fourneau de dosage (2, 3, 10) pour recevoir la fonte et pourvu d'une disposition pour empêcher l'accès de l'aire, le cas échéant comprenant au moins une alimentation d'un gaz protecteur,
    b) un dispositif (8, 11-14; 19-21) pour maintenir dans le récipient intermédiaire (10) un niveau (N) à sélection discrétionnaire de la fonte, qui comprend au moins une pompe de dosage (8) s'étendant dans le récipient intermédiaire (10) et ayant un tuyau de pompe (7) comme entrée du récipient intermédiaire (10), qui s'étend jusqu'à un niveau dans la fonte, qui est situé entre la région de fond (2a) d'une chambre précédant le récipient intermédiaire (10) et le niveau de fonte (N) de celle-ci, la pompe de dosage (8) pompant de la fonte d'une chambre précédente (3) de l'espace de fourneau dans le récipient intermédiaire (10), qui s'élargit vers le haut en comparaison avec l'entré et ayant pour le dosage une disposition d'ajustage (11-14; 19-21) pour un niveau (N) à sélection discrétionnaire dans le récipient intermédiaire (10), et
    c) au moins une buse à la sortie (15; 115) du récipient intermédiaire (10) pour décharger la fonte à un dispositif de façonnage (44) ou à un moule (42),
    d) un dispositif de chauffage ou d'équilibrage de température (23) étant préférablement associé au récipient intermédiaire (10), de préférence à son sortie (15).
  2. Dispositif de coulée selon la revendication 1, caractérisé en ce, que le récipient intermédiaire (10) est capable d'être déplacé le long d'au moins un axe spatiale au moyens d'un dispositif de mouvement (38), comme un chariot, un glissoir et/ou un dispositif de levage.
  3. Dispositif de coulée selon une quelconque des revendications précédentes, caractérisé en ce, que l'arbre de la pompe de dosage (8) est supporté à l'intérieur d'un tuyau (28), qui traverse le récipient intermédiaire (10) et forme le tuyau de pompe (7).
  4. Dispositif de coulée selon une quelconque des revendications précédentes, caractérisé en ce, que la buse (15) satisfait au moins une des conditions suivantes:
    a) elle est formée comme buse à fente pour décharger une barre en forme d'une tôle;
    b) elle est dirigé vers le haut et est en communication avec le tuyau de pompe (28), de manière que l'on peut remplir un moule de bas ou on peut produire une barre dirigé vers le haut au moyens de la pression métallostatique résultant dans le tuyau de pompe par la commande de niveau;
    c) elle est formé comme une composante séparée du récipient intermédiaire (10), qui, de préférence, est pourvue d'une niveleuse pour orienter et pour fixer la position de l'orifice de la buse;
    d) au moins un dispositif d'équilibrage de température, par exemple comprenant un dispositif de chauffage (23) est associé à elle;
    e) elle comprend un capteur (24), préférablement un capteur inductif, pour l'état de solidification de la fonte dans la zone de la buse (15; 115), ledit capteur (24) formant de préférence part d'un dispositif de réglage (25, 26, 31) ayant un étage de comparaison (25) pour le valeur effectif fourni par le capteur avec un valeur de consigne, dont l'organe final est formé par un dispositif de chauffage (5, 23), particulièrement au moins un dispositif de chauffage (23) dans la zone de la buse (15; 115), et que préférablement non seulement les surfaces touchées par la fonte du récipient intermédiaire (10) et/ou des objets installés dans celui-ci, mais encore la buse (15; 115), mais au moins un de ces parts, est pourvu chacune d'au moins un dispositif de chauffage, et dans lequel le dispositif de réglage (25, 26, 31) est formé comme réglage en cascade, où d'abord c'est au moins une des deux dispositifs de chauffage, par exemple ceci (23) à la buse (15; 115), et puis l'autre dispositif de chauffage, par exemple ceci pour le récipient intermédiaire (10) ou pour le tuyau de pompe (7), est réglé.
  5. Dispositif de coulée selon une quelconque des revendications précédentes, caractérisé en ce, que la sortie du récipient intermédiaire (10) satisfait au moins une des conditions suivantes:
    a) elle est reliée à un distributeur pour une coulée continue multiple;
    b) elle est pourvu d'un dispositif de livraison d'un lubrifiant à l'intérieur, par exemple du graphite;
    c) elle est pourvue d'au moins un rouleau pour tirer la barre métallique, de préférence d'une paire de tels rouleaux, mais particulièrement d'une bande de transport, particulièrement refroidie, entraînée par un rouleau;
    d) le fond (16) de la sortie (15; 115) du récipient intermédiaire (10) est, au moins partiellement, incliné vers le récipient intermédiaire (10), préférablement sous un angle (α) de 20° en maximum et/ou sous un angle (α) d'au moins 4°.
  6. Dispositif de coulée selon une quelconque des revendications précédentes, caractérisé en ce, que le dispositif pour maintenir le niveau de la fonte comprend un bord-déversoir (19), dont le niveau détermine le niveau maximal de la fonte (N).
  7. Sortie (15; 115) pour un récipient intermédiaire (10), particulièrement d'un fourneau et/ou pour un dispositif de coulée continue, particulièrement selon une quelconque des revendications précédentes, caractérisée en ce, qu'un dispositif capteur (24) pour le réglage de la température de sortie est associé à cette sortie (15; 115).
  8. Sortie selon la revendication 7, caractérisée en ce, que la sortie du capteur (24) est reliée à un étage de comparaison (25) pour comparer le signal effectif fourni par le capteur (24) avec un signal de consigne fournie par un transmetteur (26), et qu'une disposition d'un organe final est prévue à la sortie de l'étage de comparaison (25) pour régler la température.
EP03729517A 2002-01-21 2003-01-09 Dispositif de coulee Expired - Lifetime EP1467828B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10201983 2002-01-21
DE10201983A DE10201983A1 (de) 2002-01-21 2002-01-21 Giessvorrichtung
PCT/IB2003/000040 WO2003059554A2 (fr) 2002-01-21 2003-01-09 Dispositif de coulee

Publications (2)

Publication Number Publication Date
EP1467828A2 EP1467828A2 (fr) 2004-10-20
EP1467828B1 true EP1467828B1 (fr) 2006-10-25

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EP03729517A Expired - Lifetime EP1467828B1 (fr) 2002-01-21 2003-01-09 Dispositif de coulee

Country Status (5)

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EP (1) EP1467828B1 (fr)
AT (1) ATE343442T1 (fr)
AU (1) AU2003201059A1 (fr)
DE (2) DE10201983A1 (fr)
WO (1) WO2003059554A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101035667B1 (ko) 2002-05-09 2011-05-19 소니 주식회사 생체 인식 패턴 검출 장치, 개인 인증 장치 및 방법
DE102009051879B3 (de) * 2009-11-04 2011-06-01 Baumgartner, Heinrich G. Metall-Druckgussmaschine
DE102012107865A1 (de) * 2012-08-27 2014-05-15 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren zum Gießen von Bauteilen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT239977B (de) * 1962-09-21 1965-05-10 Bbc Brown Boveri & Cie Vorrichtung zur Förderung von flüssigem Metall aus einem Behälter mit höher liegendem in einen Behälter mit tiefer liegendem Flüssigkeitsspiegel
FR1367334A (fr) * 1963-08-27 1964-07-17 Bbc Brown Boveri & Cie Procédé et dispositif pour prélever du métal en fusion d'un récipient
CH461716A (de) * 1967-09-07 1968-08-31 Prolizenz Ag Verfahren zur Ingangsetzung und Aufrechterhaltung der Metallzuführung zu einer Stranggiesskokille und Vorrichtung zur Ausführung des Verfahrens
DE1807846A1 (de) * 1968-11-08 1970-07-30 Vaw Ver Aluminium Werke Ag Verfahren und Vorrichtung zur Foerderung,Verteilung oder Dosierung von schmelzfluessigem Metall
DE7612351U1 (de) * 1976-04-15 1979-11-29 Mannesmann Ag, 4000 Duesseldorf Giesseinrichtung zum vollkontinuierlichen stranggiessen von stahl
JPS6068142A (ja) * 1983-09-26 1985-04-18 Nippon Steel Corp 気泡ポンプによる溶融金属の移送方法

Also Published As

Publication number Publication date
AU2003201059A8 (en) 2003-07-30
ATE343442T1 (de) 2006-11-15
DE10201983A1 (de) 2003-07-31
EP1467828A2 (fr) 2004-10-20
WO2003059554A2 (fr) 2003-07-24
AU2003201059A1 (en) 2003-07-30
WO2003059554A3 (fr) 2004-04-22
DE50305477D1 (de) 2006-12-07

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