EP0737117B1 - Method and equipment for the integral casting of metal strip close to its final dimensions - Google Patents

Method and equipment for the integral casting of metal strip close to its final dimensions Download PDF

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Publication number
EP0737117B1
EP0737117B1 EP95903251A EP95903251A EP0737117B1 EP 0737117 B1 EP0737117 B1 EP 0737117B1 EP 95903251 A EP95903251 A EP 95903251A EP 95903251 A EP95903251 A EP 95903251A EP 0737117 B1 EP0737117 B1 EP 0737117B1
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EP
European Patent Office
Prior art keywords
casting
nozzle
melt
main chamber
conveyor belt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP95903251A
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German (de)
French (fr)
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EP0737117A1 (en
Inventor
Ulrich Urlau
Helmut Schlechtriem
Wolfgang Reichelt
Ewald Feuerstacke
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Vodafone GmbH
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Mannesmann AG
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Publication of EP0737117A1 publication Critical patent/EP0737117A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14Closures
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0631Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a travelling straight surface, e.g. through-like moulds, a belt
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637Accessories therefor
    • B22D11/064Accessories therefor for supplying molten metal

Definitions

  • the invention relates to a method for casting a metal belt close to its final dimensions onto a belt casting device provided with a melt receptacle and a conveyor belt, in which a metal melt, in particular made of steel, via a closable, pressurizable pouring chamber and connected via a siphon to a pressurizable main chamber a pouring nozzle flows out.
  • a metal melt in particular made of steel
  • a closable, pressurizable pouring chamber and connected via a siphon to a pressurizable main chamber a pouring nozzle flows out.
  • the invention has set itself the goal of demonstrating a method and the necessary device with which a safe displacement of the air is ensured during the start-up phase.
  • the invention achieves this aim with the features of claims 1 and 4, respectively.
  • the pouring nozzle is filled with liquid melt up to the shut-off located in the area of the mouth.
  • Shut-off devices which allow controlled opening are used, in such a way that at the beginning of the opening there is a slot across the entire width of the pouring nozzle.
  • the casting pressure is chosen so that the melt emerges at high speed during this first slit-shaped opening of the mouth of the pouring channel.
  • the air below the barrier is entrained. This entrainment of the extremely small amounts of air in the region of the mouth of the pouring nozzle is further promoted by the trumpet-like design of the inside of the pouring nozzle facing away from the metal receptacle.
  • the pressure resistance at the mouth of the nozzle increased by obstacles.
  • the elements used for this are preferably self-consuming so that they can later Do not hinder the casting operation.
  • Figure 1 shows schematically the start-up phase.
  • the casting vessel having a main chamber 11 and a pouring chamber 12 is empty, a shut-off element 21 in the pouring nozzle 14 is closed, and the conveyor belt 31 is stationary.
  • the main chamber 11 and the pouring chamber 12 are separated by a wall 13.
  • the casting vessel is filled with melt in such a way that the melt level in the pouring chamber 12 is raised by negative pressure P o and a differential melting level of ⁇ h A is set in the main chamber.
  • the differential level ⁇ h refers to the liquid metal level H that occurs during the casting operation on the conveyor belt or to the inside 16 of the pouring nozzle 14 inclined towards the conveyor belt 31.
  • the conveyor belt 31 is put into operation and the shut-off element 21 is opened in the form of a slot.
  • the liquid metal M emerges from the casting nozzle and is formed into a casting strand 5.
  • the shut-off element 21 is continuously opened during this start-up phase.
  • the differential melting level ⁇ h is reduced until it is brought to the operating level height ⁇ h G.
  • FIGS. 2 to 4 show the lower section of the pouring nozzle 14 with differently configured shut-off elements 21. Shown in section are the mouth 15 of the wall 17 facing away from the main chamber and of the wall 18 inclined towards the main chamber.
  • the inside 16 of the wall 17 is designed like a trumpet. It has a radius R that connects the approximately 45 ° inclined pouring nozzle to the side inclined parallel to the conveyor belt 31.
  • an element 41 is arranged on the wall 17. The element 41 serves to increase the pressure resistance and projects into the space between the conveyor belt 31 and the inside 16.
  • the shut-off element 21 is a knife gate valve 22 designed, which can be moved via a drive 29 is. In the closed position of the knife gate valve 22 this leans against a level 19 in the wall 18.
  • the shut-off element 21 is designed as a flap 23. This leans against a step 19 in the wall 18 in the closed position. In the open position, the flap 23 is pivoted into the wall 17 via a drive (not shown in further detail) such that a plate side forms a plane with the inside 16.
  • a shaft 24 is provided as the shut-off element 21, which has a recess 25 which, according to the rotational position of the shaft 24, releases the pouring nozzle unhindered.
  • the walls 17 and 18 are for thermal purposes Adjust the same wall thickness.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Coating With Molten Metal (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

PCT No. PCT/DE94/01519 Sec. 371 Date Jul. 24, 1996 Sec. 102(e) Date Jul. 24, 1996 PCT Filed Dec. 14, 1994 PCT Pub. No. WO95/17987 PCT Pub. Date Jul. 6, 1995Metal strip close to its final dimensions is cast using a strip-casting apparatus provided with a melt-holding vessel and a conveyor belt, in which a metal melt, in particular steel, flows out of a casting nozzle of a closable pouring chamber which can be put under vacuum and is connected via a siphon to a main chamber which can be put under pressure. The casting nozzle is inclined by about 45 DEG and is of trumpet-like configuration in the region of the orifice on the inside of the nozzle wall remote from the main chamber. Additionally, a shut-off element which can be opened in a slit-shaped manner is provided near the orifice of the casting nozzle.

Description

Die Erfindung betrifft ein Verfahren zum Angießen eines endabmessungsnahen Metallbandes auf einer mit einem Schmelzenaufnahmegefäß und einem Transportband versehenen Bandgießeinrichtung, bei dem eine Metallschmelze, insbesondere aus Stahl, über eine verschließbare, in Unterdruck versetzbare und über einen Syphon mit einer unter Druck versetzbaren Hauptkammer verbundenen Eingießkammer über eine Gießdüse ausfließt.
Beim Angießen einer Bandgießeinrichtung zum Herstellen von endabmessungsnahen Metallbändern führen Lufteinschlüsse in der Gießdüse zu erheblichen Behinderungen des Gießbetriebes.
Aus EP 0 534 174 sind Verfahren und die dazu erforderlichen Vorrichtungen bekannt, die ein Verdrängen der Luft aus der Gießdüse und dem vorgeschalteten Bereich bewirken sollen. Hierbei wird einmal vorgeschlagen, im Schmelzeverteiler anfänglich einen Füllstand einzustellen, der maximal der Transportbandebene entspricht und beim Angießen einen solchen Füllstand einzustellen, der die Schmelze aus einer U-förmig gekrümmten Gießdüse verdrängt.
In der Praxis hat sich gezeigt, daß im mittleren oberen Bereich der U-förmig nach unten gekrümmten Gießdüse sich Luft ansammelt. Dies führt im wesentlichen dazu, daß ein nichtkontrollierbarer Anfahrschwall auftritt, der ggf. ein Einfahren des Stranges verhindert.
In der gleichen Schrift wird daher auch noch vorgeschlagen, zwischen dem Schmelzeverteiler und der Gießdüse eine Eingießkammer vorzusehen und beim Angießen - bei gegenüber der Metallschmelze geschlossenem Einlauf der einem Saugheber nachgeschalteten Gießdüse - in der Eingießkammer einen Unterdruck aufzubauen und die Luft in der Gießdüse nach oben zu verdrängen.
The invention relates to a method for casting a metal belt close to its final dimensions onto a belt casting device provided with a melt receptacle and a conveyor belt, in which a metal melt, in particular made of steel, via a closable, pressurizable pouring chamber and connected via a siphon to a pressurizable main chamber a pouring nozzle flows out.
When casting on a strip casting device for producing metal strips close to their final dimensions, air pockets in the pouring nozzle lead to considerable impediments to the casting operation.
Methods and the devices required for this purpose are known from EP 0 534 174 which are intended to displace the air from the pouring nozzle and the upstream region. It is proposed once to initially set a fill level in the melt distributor that corresponds at most to the level of the conveyor belt and to set a fill level during casting that displaces the melt from a U-shaped pouring nozzle.
In practice, it has been found that air collects in the middle upper region of the U-shaped downward pouring nozzle. This essentially leads to the occurrence of an uncontrollable start-up surge, which may prevent the strand from entering.
In the same document it is therefore also proposed to provide a pouring chamber between the melt distributor and the pouring nozzle and to build up a negative pressure in the pouring chamber during casting - with the inlet of the pouring nozzle downstream of a suction lifter closed in relation to the molten metal - and to increase the air in the pouring nozzle oust.

Auch bei dieser Verfahrensweise lassen sich Behinderungen während des Angießens nicht vermeiden, da die aufsteigenden Luftblasen dem Metallschmelzestrom entgegensteigen.
Hierbei kommt es zu nicht kontrollierbaren Verengungen in Teilbereichen der Gießdüse, die wiederum nicht gewollten Einfluß auf die Ausbreitung der Metallschmelze auf dem Transportband bewirken.
Even with this procedure, disabilities cannot be avoided during casting, since the rising air bubbles rise against the flow of molten metal.
This leads to uncontrollable constrictions in parts of the pouring nozzle, which in turn have an undesired influence on the spreading of the molten metal on the conveyor belt.

In Kenntnis der bekannten Schwierigkeiten hat sich die Erfindung das Ziel gesetzt, ein Verfahren und die dazu erforderliche Vorrichtung aufzuzeigen, mit der ein sicheres Verdrängen der Luft während der Anfahrphase gewährleistet wird.
Die Erfindung erreicht dieses Ziel jeweils mit den Merkmalen der Ansprüche 1 und 4.
Vor dem Anfahren wird die Gießdüse bis zu der sich im Bereich der Mündung befindenden Absperrung mit Flüssigschmelze gefüllt. Es werden Absperrorgane, die ein gesteuertes Öffnen zulassen, eingesetzt, und zwar in der Weise, daß zu Öffnungsbeginn über die gesamte Breite der Gießdüse ein Schlitz vorhanden ist. Der Gießdruck wird dabei so gewählt, daß bei diesem ersten schlitzförmigen Öffnen der Mündung des Gießkanals die Schmelze mit hoher Geschwindigkeit austritt. Hierbei wird die unterhalb der Sperrung sich befindende Luft mitgerissen. Dieses Mitreißen der äußerst geringen Luftmengen im Bereich der Mündung der Gießdüse wird darüber hinaus begünstigt durch die trompetenartige Ausgestaltung der im Metallaufnahmegefäß abgewandten Innenseite der Gießdüse.
Knowing the known difficulties, the invention has set itself the goal of demonstrating a method and the necessary device with which a safe displacement of the air is ensured during the start-up phase.
The invention achieves this aim with the features of claims 1 and 4, respectively.
Before starting, the pouring nozzle is filled with liquid melt up to the shut-off located in the area of the mouth. Shut-off devices which allow controlled opening are used, in such a way that at the beginning of the opening there is a slot across the entire width of the pouring nozzle. The casting pressure is chosen so that the melt emerges at high speed during this first slit-shaped opening of the mouth of the pouring channel. The air below the barrier is entrained. This entrainment of the extremely small amounts of air in the region of the mouth of the pouring nozzle is further promoted by the trumpet-like design of the inside of the pouring nozzle facing away from the metal receptacle.

Es hat sich gezeigt, daß beim Einsatz von Vakuum im Bereich oberhalb der Gießdüse Luft bevorzugt dem ausfließenden Metall entgegenströmt. Es wird daher vorgeschlagen, diesen nicht gewollten Strömungsfaden der Luft weitgehendst zu behindern. It has been shown that when using vacuum in the area Air above the pouring nozzle prefers the outflowing one Metal flows against. It is therefore suggested this unwanted flow of air as much as possible to hinder.

Hierzu wird der Druckwiderstand an der Mündung der Düse durch Hindernisse erhöht. Die hierzu eingesetzten Elemente sind vorzugsweise selbstverzehrend, so daß sie den späteren Gießbetrieb nicht behindern.For this, the pressure resistance at the mouth of the nozzle increased by obstacles. The elements used for this are preferably self-consuming so that they can later Do not hinder the casting operation.

Ein Beispiel der Erfindung ist in der beigefügten Zeichnung dargelegt.
Dabei zeigen die

  • Figur 1 das Schema des Anfahrens.
  • Figur 2 bis 4 die Form der Mündung der Gießdüse bei verschieden ausgestalteten Absperrelementen.
  • An example of the invention is set out in the accompanying drawing.
    The show
  • Figure 1 shows the scheme of starting.
  • Figure 2 to 4, the shape of the mouth of the pouring nozzle with differently designed shut-off elements.
  • Die Figur 1 zeigt schematisch die Anfahrphase. Vor Gießbeginn ist das eine Hauptkammer 11 und eine Eingießkammer 12 aufweisende Gießgefäß leer, ein Absperrelement 21 in der Gießdüse 14 ist geschlossen, das Transportband 31 steht.
    Die Hauptkammer 11 und die Eingießkammer 12 sind durch einen Wall 13 getrennt. Kurz vor Gießbeginn wird das Gießgefäß mit Schmelze gefüllt, und zwar in der Weise, daß der Schmelzenspiegel in der Eingießkammer 12 durch Unterdruck Po angehoben wird und in der Hauptkammer ein Differenzschmelzpegel von ΔhA eingestellt wird. Der Differenzspiegel Δh nimmt Bezug auf den während des Gießbetriebes sich einstellenden Flüssigmetallspiegel H auf dem Transportband bzw. auf die dem Transportband 31 zugeneigte Innenseite 16 der Gießdüse 14.
    Zum Gießbeginn wird das Transportband 31 in Betrieb gesetzt und das Absperrelement 21 wird schlitzförmig geöffnet.In einem starken Schwall tritt das Flüssigmetall M aus der Gießdüse aus und wird zu einem Gießstrang 5 ausgeformt. Während dieser Anfahrphase wird das Absperrelement 21 kontinuierlich geöffnet. In Abhängigkeit von der dem Hauptgefäß zugeführten Metallmenge wird der Differenzschmelzspiegel Δh verringert, bis er auf die Betriebspiegelhöhe ΔhG geführt ist.
    Figure 1 shows schematically the start-up phase. Before the start of pouring, the casting vessel having a main chamber 11 and a pouring chamber 12 is empty, a shut-off element 21 in the pouring nozzle 14 is closed, and the conveyor belt 31 is stationary.
    The main chamber 11 and the pouring chamber 12 are separated by a wall 13. Shortly before the start of casting, the casting vessel is filled with melt in such a way that the melt level in the pouring chamber 12 is raised by negative pressure P o and a differential melting level of Δh A is set in the main chamber. The differential level Δh refers to the liquid metal level H that occurs during the casting operation on the conveyor belt or to the inside 16 of the pouring nozzle 14 inclined towards the conveyor belt 31.
    At the start of casting, the conveyor belt 31 is put into operation and the shut-off element 21 is opened in the form of a slot. In a strong surge, the liquid metal M emerges from the casting nozzle and is formed into a casting strand 5. The shut-off element 21 is continuously opened during this start-up phase. Depending on the amount of metal supplied to the main vessel, the differential melting level Δh is reduced until it is brought to the operating level height Δh G.

    Die Figuren 2 bis 4 zeigen den unteren Abschnitt der Gießdüse 14 bei verschieden ausgestalteten Absperrelementen 21. Dargestellt sind im Schnitt die Mündung 15 der der Hauptkammer abgewandten Wand 17 und der der Hauptkammer zugeneigten Wand 18. Die Innenseite 16 der Wand 17 ist trompetenartig ausgestaltet. Sie weist dabei einen Radius R auf, der die etwa 45° geneigte Gießdüse mit der parallel zum Transportband 31 zugeneigten Seite verbindet.
    Am Ende der Mündung 15 ist an der Wand 17 ein Element 41 angeordnet. Das Element 41 dient der Erhöhung des Druckwiderstandes und ragt in den Freiraum zwischen dem Transportband 31 und der Innenseite 16 hinein.
    FIGS. 2 to 4 show the lower section of the pouring nozzle 14 with differently configured shut-off elements 21. Shown in section are the mouth 15 of the wall 17 facing away from the main chamber and of the wall 18 inclined towards the main chamber. The inside 16 of the wall 17 is designed like a trumpet. It has a radius R that connects the approximately 45 ° inclined pouring nozzle to the side inclined parallel to the conveyor belt 31.
    At the end of the mouth 15, an element 41 is arranged on the wall 17. The element 41 serves to increase the pressure resistance and projects into the space between the conveyor belt 31 and the inside 16.

    In der Figur 2 ist das Absperrelement 21 als Plattenschieber 22 ausgestaltet, der über einen Antrieb 29 verschiebbar ist. In der geschlossenen Stellung des Plattenschiebers 22 lehnt sich diese gegen eine Stufe 19 in der Wand 18.In Figure 2, the shut-off element 21 is a knife gate valve 22 designed, which can be moved via a drive 29 is. In the closed position of the knife gate valve 22 this leans against a level 19 in the wall 18.

    In der Figur 3 ist das Absperrelement 21 als Klappe 23 ausgebildet. Diese lehnt sich in der geschlossenen Stellung gegen eine Stufe 19 in der Wand 18. In der geöffneten Stellung wird die Klappe 23 über einen nicht weiter dargestellten Antrieb soweit in die Wand 17 eingeschwenkt, daß eine Plattenseite mit der Innenseite 16 eine Ebene bildet.
    In der Figur 4 ist als Absperrelement 21 eine Welle 24 vorgesehen, welche eine Ausnehmung 25 aufweist, die entsprechend der Drehstellung der Welle 24 die Gießdüse unbehindert freigibt.
    In Figure 3, the shut-off element 21 is designed as a flap 23. This leans against a step 19 in the wall 18 in the closed position. In the open position, the flap 23 is pivoted into the wall 17 via a drive (not shown in further detail) such that a plate side forms a plane with the inside 16.
    In FIG. 4, a shaft 24 is provided as the shut-off element 21, which has a recess 25 which, according to the rotational position of the shaft 24, releases the pouring nozzle unhindered.

    In der Figur 4 besitzen die Wände 17 und 18 zwecks thermischer Anpassung die gleiche Wanddicke.In Figure 4, the walls 17 and 18 are for thermal purposes Adjust the same wall thickness.

    Claims (9)

    1. A method for the integral casting of a metal strip (S) which is close to its final dimensions on a strip casting apparatus provided with a melt storage vessel (11, 12) and a conveyor belt (31), in which a metal melt, in particular a steel melt, flows out through a nozzle (14) onto the conveyor belt (31) through a closable melt pouring chamber (12) which can be switched to negative pressure and which is connected via a siphon to a main chamber (11) which can be placed under pressure, characterised by the following steps:
      a) before the beginning of casting, the mouth of the nozzle (14) facing the conveyor belt (31) is closed,
      b) then the main chamber (11) and the melt pouring chamber (12) are filled with molten metal, with differential levels ΔhA and ΔhG being set to a value of ΔhA/ΔhG > 5 in the main chamber relative to the level of molten metal present in the stationary operating state on the conveyor belt (31),
      c) at the beginning of casting, the nozzle (14) is opened in a slot-shape on the side inclined towards the main vessel (11) such that the downward-directed casting rate of the molten metal is greater than the rate of ascent of the gas bubbles penetrating into the melt,
      d) upon simultaneous continuous opening of the nozzle (14) until the mouth region is completely freed, the differential melt level ΔhG in the main chamber drops to a value slightly above the level of molten metal H on the conveyor belt according to the siphon principle.
    2. A method for integral casting according to Claim 1, characterised in that a negative pressure is produced in the melt pouring chamber (12).
    3. A method for integral casting according to Claims 2 or 1, characterised in that the pressure resistance is increased at least during the integral casting at the nozzle mouth (14) in the direction counter to the flow of the liquid metal.
    4. An apparatus for strip casting a metal strip (S) which is close to its final dimensions, which comprises a conveyor belt (31) and a metal storage vessel consisting of a main chamber (11) and a melt pouring chamber (12), which has a shut-off element which closes off access to the nozzle (14), for performing the method according to Claim 1, characterised in that the nozzle (14) is inclined at approximately 45° and is trumpet-shaped in the region of the mouth (15) on the inside (16) remote from the main chamber (11), and that a shut-off element (21) which can be opened in a slot-shape is provided in the vicinity of the mouth (15) of the nozzle (14).
    5. An apparatus according to Claim 4, characterised in that the shut-off element (21) is a slide gate valve (22).
    6. An apparatus according to Claim 4, characterised in that the shut-off element (21) is a flap (23) which pivots about a laterally arranged axis.
    7. An apparatus according to Claim 4, characterised in that the shut-off element (21) is constructed from a rotatable shaft (24) which has a recess (25) covering at least half the cross-sectional surface of the shaft in the region of the casting channel.
    8. An apparatus according to one of the preceding claims, characterised in that an element (41) is provided at the outlet of the mouth (15) of the wall (17) remote from the main chamber (11), which element increases the pressure resistance in the direction counter to the flow of the molten metal M.
    9. An apparatus according to Claim 8, characterised in that the pressure-increasing element (41) is made of thermally consumable material, e.g. low-melting metal.
    EP95903251A 1993-12-27 1994-12-14 Method and equipment for the integral casting of metal strip close to its final dimensions Expired - Lifetime EP0737117B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE4344953 1993-12-27
    DE4344953A DE4344953C2 (en) 1993-12-27 1993-12-27 Method and device for casting a metal strip close to its final dimensions
    PCT/DE1994/001519 WO1995017987A1 (en) 1993-12-27 1994-12-14 Method and equipment for the integral casting of metal strip close to its final dimensions

    Publications (2)

    Publication Number Publication Date
    EP0737117A1 EP0737117A1 (en) 1996-10-16
    EP0737117B1 true EP0737117B1 (en) 1998-05-20

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    EP95903251A Expired - Lifetime EP0737117B1 (en) 1993-12-27 1994-12-14 Method and equipment for the integral casting of metal strip close to its final dimensions

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    US (1) US5915459A (en)
    EP (1) EP0737117B1 (en)
    JP (1) JP3011460B2 (en)
    KR (1) KR100314990B1 (en)
    CN (1) CN1041498C (en)
    AT (1) ATE166265T1 (en)
    AU (1) AU680978B2 (en)
    BR (1) BR9408424A (en)
    DE (2) DE4344953C2 (en)
    DK (1) DK0737117T3 (en)
    ES (1) ES2116067T3 (en)
    WO (1) WO1995017987A1 (en)

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    CA3052449C (en) 2013-03-11 2021-10-19 Jan Remmereit Lipid compositions comprising 5, 11, 14-eicosatrienoic acid and conjugated linoleic acids
    CN114101616B (en) * 2021-11-23 2023-03-10 江苏双友智能装备科技股份有限公司 Full-automatic aluminum round ingot casting equipment and negative pressure casting process
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    SE9102022L (en) * 1991-07-01 1993-01-02 Stiftelsen Metallurg Forsk SET AND CASTING MACHINE FOR CONTINUOUS CASTING OF METAL BELTS
    DE4218587C1 (en) * 1991-09-27 1993-11-04 Wieland Werke Ag METHOD AND DEVICE FOR PRODUCING A METAL STRIP NEAR DIMENSIONS
    DE4319966A1 (en) * 1993-06-17 1994-12-22 Didier Werke Ag Immersion spout

    Also Published As

    Publication number Publication date
    DE4344953A1 (en) 1995-06-29
    JP3011460B2 (en) 2000-02-21
    ES2116067T3 (en) 1998-07-01
    US5915459A (en) 1999-06-29
    DK0737117T3 (en) 1998-10-07
    JPH09506551A (en) 1997-06-30
    AU1218695A (en) 1995-07-17
    BR9408424A (en) 1997-08-26
    ATE166265T1 (en) 1998-06-15
    CN1139395A (en) 1997-01-01
    EP0737117A1 (en) 1996-10-16
    DE4344953C2 (en) 1996-10-02
    KR100314990B1 (en) 2002-02-19
    AU680978B2 (en) 1997-08-14
    DE59406056D1 (en) 1998-06-25
    CN1041498C (en) 1999-01-06
    WO1995017987A1 (en) 1995-07-06

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