EP0356551A1 - Set of ceramic plates for sliding gate valves comprising three sliding plates - Google Patents

Set of ceramic plates for sliding gate valves comprising three sliding plates Download PDF

Info

Publication number
EP0356551A1
EP0356551A1 EP88114176A EP88114176A EP0356551A1 EP 0356551 A1 EP0356551 A1 EP 0356551A1 EP 88114176 A EP88114176 A EP 88114176A EP 88114176 A EP88114176 A EP 88114176A EP 0356551 A1 EP0356551 A1 EP 0356551A1
Authority
EP
European Patent Office
Prior art keywords
plate
flow
bore
slide
outlet
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.)
Granted
Application number
EP88114176A
Other languages
German (de)
French (fr)
Other versions
EP0356551B1 (en
Inventor
Berhard Dipl.-Ing. Dipl.-Kfm. Tinnes
Walter Masch.Ing.Htl Vetterli
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.)
Metacon AG
Original Assignee
Metacon 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 Metacon AG filed Critical Metacon AG
Priority to AT88114176T priority Critical patent/ATE74036T1/en
Priority to EP88114176A priority patent/EP0356551B1/en
Priority to DE8888114176T priority patent/DE3869609D1/en
Priority to ES198888114176T priority patent/ES2031561T3/en
Priority to ZA895235A priority patent/ZA895235B/en
Priority to CA000607347A priority patent/CA1340540C/en
Priority to CS478989A priority patent/CS273200B2/en
Priority to JP1215159A priority patent/JPH0289559A/en
Priority to AR89314757A priority patent/AR241644A1/en
Priority to MX017330A priority patent/MX171518B/en
Priority to US07/400,056 priority patent/US4966315A/en
Priority to HU450689A priority patent/HU209419B/en
Priority to SU894614846A priority patent/SU1731039A3/en
Priority to CN89106645A priority patent/CN1018805B/en
Publication of EP0356551A1 publication Critical patent/EP0356551A1/en
Application granted granted Critical
Publication of EP0356551B1 publication Critical patent/EP0356551B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/24—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings characterised by a rectilinearly movable plate

Definitions

  • the invention relates to a refractory plate set for three-plate slide closures, in particular for regulating the inflow of molten steel in continuous casting molds, with a melt flow channel formed by the flow openings of the plates, the flow cross section of which can be changed by adjusting a slide plate, which is between a stationary inlet plate and a likewise fixed, a refractory one Spout, for example in the form of a pouring tube or an outlet sleeve, supports a supporting outlet plate, the flow bore of which enables the melt to flow completely out of the flow bore of the slide plate during the closing process.
  • slide shutters equipped with a set of three refractory plates serve primarily to regulate the amount of melt to be fed from a tundish to a continuous casting mold.
  • the starting point of the control range is a throttle position, in which the slide plate blocks the flow channel of the plate set to such an extent that regulation is possible both in the closing and in the opening direction of the slide plate.
  • the throttle position at the start of pouring with a fully open flow channel whereby in addition to the usually congruently fixed flow holes of the inlet and outlet plates, the flow hole of the slide plate is also congruent.
  • the throttle edge of the slide plate protrudes far between the flow bores of the inlet and outlet plate and causes a sharp deflection of the melt flow or pouring jet in the flow channel of the closure with a curve that bulges out in the closing direction.
  • the result of such a sharp flow curve is increased flow pressures, especially below the slide plate on the edge of the bore in the flow path of the outlet plate and in the region of the outlet below it.
  • deposits from the melt occur primarily at the bore edge of the outlet plate lying in the flow path as a result of flow eddies, which increasingly narrow the flow channel.
  • the object of the present invention is to achieve an improved flow of the melt in the throttling position of the three-plate set with simple technical means with a comparatively long service life of the plates.
  • the simple technical means consist in the fact that the throughflow bore of the outlet plate in the closing direction of the slide plate has an axis offset with respect to the throughflow bore of the inlet plate and has a conical widening at least on the inlet side.
  • the procedure according to the invention is such that two widening areas are provided on the bore edges of the outlet plate lying in the direction of displacement, or there is a single widening area which then lies in the opening direction of the slide plate. Both versions are easy to accomplish, for example, by slanting an extension drill on the edge of the hole and result in favorable strength ratios of the outlet plates.
  • the ring width of the conical widening preferably corresponds at least to the dimension of the axis displacement, while the flow bore of the outlet plate is kept at most by twice the dimension of the axis displacement smaller than the diameter of the flow bore in the inlet plate.
  • a conventional plate set according to FIG. 1 for a three-plate slide closure has a stationary inlet plate 1 with a through-bore 4, an adjustable slide plate 2 with a through-hole 5 and a stationary outlet plate 3 with a through-hole 6 to which a refractory outlet pipe 7 is connected.
  • All flow bores 4 to 6 have the same diameter and are congruent in the open position. They form a flow channel 4 to 6 for molten steel, which flows from a vessel (not shown) to the closure and flows through the outlet pipe 7 (immersion pipe) into a mold (also not shown) in a controlled manner.
  • the cross-section of the flow channel 4 to 6 can be changed and take any conceivable throttle position between a full open position and a full closed position, for example to keep the fill level in a continuous casting mold at a desired set level.
  • the approximately half throttle position shown in FIG. 1 is the normal pouring position, which has approximately the same control reserves in the opening and closing directions.
  • melt flow in the flow channel 4 to 6 is sharply deflected at the projecting throttle edge 9 of the slide plate 2.
  • the flow or Deflection pressure of the melt stream or pouring jet with vortex formation mainly affects the opening edge 10 of the outlet plate 3 lying in the closing direction and the region 11 of the outlet pipe 7 underneath, which leads to premature wear with an adverse effect on the service life of outlet plate 3 and outlet pipe 7 .
  • the extension of the outlet plate 3 can consist of extension areas 15 which face each other in the direction of displacement of the slide plate 2 at the flow-through hole 16, the diameter of which is kept smaller than the same diameter of the holes 4 and 5 in order to consolidate the pouring jet .
  • the melt can flow through the flow channels 4, 5 and 16 almost without deflection.
  • a single extension area 17 on the flow-through bore 18 of the outlet plate 3, namely in the open position of the slide plate 2 can be used, in which case it must be ensured that in FIG 9 illustrated throttle position, the edge projection 19 of the outlet plate is as small as possible.
  • the plate set described for continuous casting plants is also equally effective for casting work in which an outlet sleeve is connected to the outlet plate 3 instead of an outlet pipe 7 (immersion pipe).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Sliding Valves (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

Insbesondere beim Giessen von Strängen mit Dreiplattenschieberverschlüssen zum Regeln des Schmelzezuflusses in die Kokille sind für einen wirtschaftlichen Betrieb der Anlage hohe Standzeiten des Plattensatzes gefordert. Durch scharfe Umlenkungen des Schmelzestromes und resultierende hohe Strömungsdrücke im Schmelzedurchflusskanal (4 bis 6) verursachte voreilende Verschleissstellen (10 und 11) sollen unter Anwendung einfacher Mittel abgebaut werden. Diese sind gekennzeichnet durch eine Achsenversetzung (X) der Durchflussbohrung (12) der ortsfesten Auslaufplatte (3) gegenüber der Durchflussbohrung (4) der ortsfesten Einlaufplatte (1) in Schliessrichtung (8) der Schieberplatte (2) und einer wenigstens einlaufseitig vorgesehenen konischen Erweiterung (14, 15 und 17) der Durchflussbohrung (12, 16 und 18), was einen weitgehend ungehinderten Fluss des Schmelzenstromes durch den Schieberverschluss zum Auslaufrohr (7) bewirkt.Particularly when casting strands with three-plate slide closures to regulate the melt flow into the mold, long service life of the plate set is required for economical operation of the system. Leading wear points (10 and 11) caused by sharp deflections of the melt flow and resulting high flow pressures in the melt flow channel (4 to 6) are to be reduced using simple means. These are characterized by an axis offset (X) of the throughflow bore (12) of the stationary outlet plate (3) in relation to the throughflow bore (4) of the stationary inlet plate (1) in the closing direction (8) of the slide plate (2) and a conical extension provided at least on the inlet side ( 14, 15 and 17) of the flow-through bore (12, 16 and 18), which causes a largely unimpeded flow of the melt stream through the slide closure to the outlet pipe (7).

Description

Die Erfindung betrifft einen feuerfesten Plattensatz für Drei­plattenschieberverschlüsse, insbesondere zum Regeln des Zuflusses von Stahlschmelze in Stranggiesskokillen, mit einem von den Durchflussöffnungen der Platten gebildeten Schmelze­durchflusskanal, dessen Durchflussquerschnitt durch Verstellen einer Schieberplatte veränderbar ist, die zwischen einer ortsfesten Einlaufplatte und einer ebenfalls ortsfesten, einen feuerfesten Auslauf, beispielweise in Form eines Giessrohres oder einer Auslaufhülse, tragenden Auslaufplatte lagert, deren Durchflussbohrung ein vollständiges Ablaufen der Schmelze aus der Durchflussbohrung der Schieberplatte während des Schliess­vorganges ermöglicht.The invention relates to a refractory plate set for three-plate slide closures, in particular for regulating the inflow of molten steel in continuous casting molds, with a melt flow channel formed by the flow openings of the plates, the flow cross section of which can be changed by adjusting a slide plate, which is between a stationary inlet plate and a likewise fixed, a refractory one Spout, for example in the form of a pouring tube or an outlet sleeve, supports a supporting outlet plate, the flow bore of which enables the melt to flow completely out of the flow bore of the slide plate during the closing process.

Mit einem Satz von drei feuerfesten Platten ausgestattete Schieberverschlüsse dienen bekanntlich vornehmlich zur Regelung der aus einem Zwischengefäss (Tundish) einer Stranggieskokille zuzuführenden Schmelzenmenge. Im Giessbetrieb ist Ausgangspunkt des Regelbereiches eine Drosselstellung, bei der die Schieber­platte den Durchflusskanal des Plattensatzes soweit absperrt, dass eine Regelung sowohl in Schliess- als auch in Oeffnungs­richtung der Schieberplatte möglich ist. Eine Ausnahme zur Drosselstellung gibt es gegebenenfalls bei Giessbeginn mit voll offenem Durchflusskanal, wobei ausser den üblicherweise deckungs­gleich fixierten Durchflussbohrungen von Einlauf- und Auslauf­platte die Durchflussbohrung der Schieberplatte zusätzlich deckungsgleich ist. Ansonsten steht die Drosselkante der Schieberplatte zwischen den Durchflussbohrungen von Ein- und Auslaufplatte weit vor und verursacht eine scharfe Umlenkung des Schmelzestromes bzw. Giesstrahls im Durchflusskanal des Ver­schlusses mit einer in Schliessrichtung ausgebuchteten Kurve. Die Folgen einer solchen scharfen Strömungskurve sind erhöhte Strömungsdrücke, besonders unterhalb der Schieberplatte an der im Strömungsweg liegenden Bohrungskante der Auslaufplatte und im darunter liegenden Bereich des Auslaufes. Dort sind ausnehmend hohe termische und erosive Beanspruchungen des feuerfesten Materials vorhanden, welches dadurch einem unerwünscht hohen, voreilenden Verschleiss ausgesetzt ist, der zu einem frühzeitigen Austausch der besagten Teile zwingt. Ausserdem treten vornehmlich an der im Strömungsweg liegenden Bohrungskante der Auslaufplatte infolge von Strömungswirbeln Ablagerungen aus der Schmelze auf, die den Durchflusskanal zunehmend verengen.It is known that slide shutters equipped with a set of three refractory plates serve primarily to regulate the amount of melt to be fed from a tundish to a continuous casting mold. In casting operation, the starting point of the control range is a throttle position, in which the slide plate blocks the flow channel of the plate set to such an extent that regulation is possible both in the closing and in the opening direction of the slide plate. There may be an exception to the throttle position at the start of pouring with a fully open flow channel, whereby in addition to the usually congruently fixed flow holes of the inlet and outlet plates, the flow hole of the slide plate is also congruent. Otherwise, the throttle edge of the slide plate protrudes far between the flow bores of the inlet and outlet plate and causes a sharp deflection of the melt flow or pouring jet in the flow channel of the closure with a curve that bulges out in the closing direction. The result of such a sharp flow curve is increased flow pressures, especially below the slide plate on the edge of the bore in the flow path of the outlet plate and in the region of the outlet below it. There are exceptional high thermal and erosive stresses on the refractory material, which is thereby exposed to undesirably high, premature wear, which forces the parts in question to be replaced at an early stage. In addition, deposits from the melt occur primarily at the bore edge of the outlet plate lying in the flow path as a result of flow eddies, which increasingly narrow the flow channel.

Zum Stand der Technik ist der Dreiplattenschieberverschluss nach der DE-PS 28 36 434 anzuführen, in der zwar nicht die Strömungs­verhältnisse innerhalb des Durchflusskanals untersucht sind, aber eine Ausbildung der Durchflussbohrung in der ortsfesten Auslauf­platte als in Schliessrichtung sich erstreckende Langlochöffnung vorgeschlagen ist, um einen vollständigen Ablauf der Schmelze aus der Durchflussöffnung der Schieberplatte beim Schliessvor­gang zu gewährleisten. Langlöcher lassen sich jedoch insbesondere an feuerfesten Platten nur schwierig und aufwendig bewerk­stelligen, vor allem, wenn die Langlochöffnung mit einem Aus­laufquerschnitt auszustatten ist, der dem Einlaufquerschnitt eines anschliessbaren Giessrohres entsprechen soll. Ausserdem wird eine Auslaufplatte mit Langlochöffnung, deren Querschnitt grösser ist als der Querschnitt der übrigen Durchflussbohrungen vorwiegend in ihrer Biegefestigkeit erheblich geschwächt.The state of the art is the three-plate slide closure according to DE-PS 28 36 434, in which the flow conditions within the flow channel are not examined, but a design of the flow hole in the fixed outlet plate as a slot opening extending in the closing direction is proposed to complete To ensure that the melt runs out of the flow opening of the slide plate during the closing process. Elongated holes, however, are difficult and expensive to produce, particularly on refractory plates, especially if the elongated hole opening is to be provided with an outlet cross section which should correspond to the inlet cross section of a connectable pouring pipe. In addition, an outlet plate with an elongated hole opening, the cross section of which is larger than the cross section of the other flow bores, is mainly weakened considerably in terms of its bending strength.

Aufgabe vorliegender Erfindung ist es, einen verbesserten Strömungsfluss der Schmelze in Drosselstellung des Dreiplatten­satzes mit einfachen technischen Mitteln bei vergleichsweise hohen Standzeiten der Platten zu erreichen.The object of the present invention is to achieve an improved flow of the melt in the throttling position of the three-plate set with simple technical means with a comparatively long service life of the plates.

Die einfachen technischen Mittel bestehen gemäss der Erfindung darin, dass die Durchflussbohrung der Auslaufplatte in Schliess­richtung der Schieberplatte eine Achsenversetzung gegenüber der Durchflussbohrung der Einlaufplatte aufweist und wenigstens einlaufseitig eine konische Erweiterung hat. Diese Vorschläge können an herkömmlichen Plattenausführungen herstellungsmässig problemlos verwirklicht werden, bei unbeeinträchtigt bleibender Festigkeit der Platten, beispeilsweise gegenüber während des Betriebes auftretenden Biegespannungen. Darüber hinaus werden in einfacher Weise die Voraussetzungen für einen verschleiss­mindernden Fluss des Schmelzestromes im Schmelzedurchflusskanal geschaffen, den die Schmelze in Drosselstellung der Schieber­platte vergleichsweise ungehindert durchströmt. So wird mit relativ geringem baulichen Aufwand ein hoher Nutzeffekt erzielt, besonders an Auslaufplatte und Auslauf, deren beider Lebensdauer sich deutlich steigert und die auch weitgehend freibleiben von Ablagerungsprodukten aus der Schmelze.According to the invention, the simple technical means consist in the fact that the throughflow bore of the outlet plate in the closing direction of the slide plate has an axis offset with respect to the throughflow bore of the inlet plate and has a conical widening at least on the inlet side. These suggestions can be easily realized in terms of production on conventional plate designs, with the plates remaining unaffected by the strength, for example compared to during the Operating bending stresses. In addition, the prerequisites for a wear-reducing flow of the melt flow in the melt flow channel are created in a simple manner, through which the melt flows comparatively unhindered in the throttle position of the slide plate. In this way, a high efficiency can be achieved with relatively little structural effort, especially on the outlet plate and outlet, the lifespan of both of which increases significantly and which also largely leave free deposit products from the melt.

Im einzelnen hat sich bei verschiedenen Durchflussbohrungs-­Querschnitten als zweckmässig erwiesen, als Mass für die Achsen­versetzung zehn bis fünfzig Prozent des Durchmessers der Durchflussbohrung festzulegen.In particular, it has proven expedient for various flow bore cross sections to determine ten to fifty percent of the diameter of the flow bore as a measure for the axis offset.

Hinsichtlich der Ausbildung der konischen Erweiterung kann erfindungsgemäss so vorgegangen werden, dass zwei Erweiterungs­bereiche an den in Verschieberichtung liegenden Bohrungskanten der Auslaufplatte vorgesehen sind oder es ist ein einziger Erweiterungsbereich vorhanden, der dann in Oeffnungsrichtung der Schieberplatte liegt. Beide Ausführungen sind beispielsweise durch schräges Ansetzen eines Erweiterungsbohrers an den Bohrungskanten leicht zu bewerkstelligen und bewirken günstige Festigkeitsverhältnisse der Auslaufplatten. Vorzugsweise entspricht die Ringbreite der konischen Erweiterung wenigstens dem Mass der Achsenversetzung, während die Durchflussbohrung der Auslaufplatte höchstens um das doppelte Mass der Achsenversetzung kleiner gehalten ist, als der Durchmesser der Durchflussbohrung in der Einlaufplatte.With regard to the configuration of the conical widening, the procedure according to the invention is such that two widening areas are provided on the bore edges of the outlet plate lying in the direction of displacement, or there is a single widening area which then lies in the opening direction of the slide plate. Both versions are easy to accomplish, for example, by slanting an extension drill on the edge of the hole and result in favorable strength ratios of the outlet plates. The ring width of the conical widening preferably corresponds at least to the dimension of the axis displacement, while the flow bore of the outlet plate is kept at most by twice the dimension of the axis displacement smaller than the diameter of the flow bore in the inlet plate.

Der Erfindung ist nachstehend anhand der schematischen Zeichnung erläutert.

  • Figur 1 zeigt im ausschnittsweisen Längsschnitt einen bekannten Plattensatz in Drosselstellung,
  • Figur 2 einen Längsschnitt durch einen erfindungsgemässen Plattensatz in Offenstellung,
  • Figur 3 eine Draufsicht auf die Auslaufplatte des Plattensatzes gemäss Figur 2 und
  • Figur 4 bis 6 und 7 bis 9 Varianten der Erfindung in ähnlicher Darstellungsweise wie in Figur 2 und 3.
The invention is explained below with reference to the schematic drawing.
  • FIG. 1 shows a known plate set in the throttle position in a partial longitudinal section,
  • FIG. 2 shows a longitudinal section through an inventive plate set in the open position,
  • Figure 3 is a plan view of the outlet plate of the plate set according to Figure 2 and
  • Figures 4 to 6 and 7 to 9 variants of the invention in a similar representation as in Figures 2 and 3.

Ein herkömmlicher Plattensatz nach Figur 1 für einen Drei­plattenschieberverschluss hat eine ortsfeste Einlaufplatte 1 mit Durchflussbohrung 4, eine verstellbare Schieberplatte 2 mit Durchflussbohrung 5 und eine ortsfeste Auslaufplatte 3 mit Durch­flussbohrung 6, an die ein feuerfestes Auslaufrohr 7 ange­schlossen ist. Alle Durchflussbohrungen 4 bis 6 haben gleichen Durchmesser und fluchten deckungsgleich in der Offenstellung. Sie bilden einen Durchflusskanal 4 bis 6 für Stahlschmelze, die aus einem nicht dargestellten Gefäss dem Verschluss zu - und durch das Auslaufrohr 7 (Tauchrohr) in eine ebenfalls nicht dargestellte Kokille geregelt abfliesst. Durch verstellen der Schieberplatte 2 in Schliessrichtung 8 und zurück kann der Querschnitt des Durchflusskanals 4 bis 6 verändert werden und dabei zwischen einer vollen Offenstellung und einer vollen Schliesstellung jede denkbare Drosselstellung einnehmen, um beispielsweise den Füllstand in einer Stranggiesskokille auf einem gewünschten Sollfüllstand zu halten. Dabei ist die in Figur 1 gezeigte, etwa hälftige Drosselstellung die normale Giessstellung, die etwa gleiche Regelreserven in Oeffnungs- und Schliessrichtung hat.A conventional plate set according to FIG. 1 for a three-plate slide closure has a stationary inlet plate 1 with a through-bore 4, an adjustable slide plate 2 with a through-hole 5 and a stationary outlet plate 3 with a through-hole 6 to which a refractory outlet pipe 7 is connected. All flow bores 4 to 6 have the same diameter and are congruent in the open position. They form a flow channel 4 to 6 for molten steel, which flows from a vessel (not shown) to the closure and flows through the outlet pipe 7 (immersion pipe) into a mold (also not shown) in a controlled manner. By adjusting the slide plate 2 in the closing direction 8 and back, the cross-section of the flow channel 4 to 6 can be changed and take any conceivable throttle position between a full open position and a full closed position, for example to keep the fill level in a continuous casting mold at a desired set level. The approximately half throttle position shown in FIG. 1 is the normal pouring position, which has approximately the same control reserves in the opening and closing directions.

In einer solchen Drosselstellung wird der Schmelzestrom im Durchflusskanal 4 bis 6 an der vorstehenden Drosselkante 9 der Schieberplatte 2 scharf umgelenkt. Dabei wirkt der Strömungs-­bzw. Umlenkungsdruck des Schmelzestroms bzw. Giessstrahls unter Wirbelbildung hauptsächlich auf die in Schliessrichtung liegende Oeffnungskante 10 der Auslaufplatte 3 und den darunter liegenden Bereich 11 des Auslaufrohres 7 ein, was einen voreilenden Ver­schleiss mit nachteiliger Auswirkung auf die Standzeit von Auslaufplatte 3 und des Auslaufrohres 7 mit sich bringt.In such a throttle position, the melt flow in the flow channel 4 to 6 is sharply deflected at the projecting throttle edge 9 of the slide plate 2. The flow or Deflection pressure of the melt stream or pouring jet with vortex formation mainly affects the opening edge 10 of the outlet plate 3 lying in the closing direction and the region 11 of the outlet pipe 7 underneath, which leads to premature wear with an adverse effect on the service life of outlet plate 3 and outlet pipe 7 .

Dem wird durch die erfindungsgemässe Ausführung nach Figur 2 und 3 entgegengewirkt, wo die Durchflussbohrung 12 der ortsfesten Auslaufplatte 3 nicht deckungsgleich zur Durchflussbohrung 4 der ortsfesten Einlaufplatte 1 angeordnet, sondern um ein Mass X in Schliessrichtung 8 der Schieberplatte 2 versetzt ist. Dadurch ergibt sich, in der in Figur 2 gestrichelt eingezeich­neten Drosselstellung der Schieberplatte 2 eine weitgehend direkte Einführung des Schmelzenstromes in das Auslaufrohr 7 unter Vermeidung eines voreilenden Verschleisses an den besagten Stellen 10 und 11. Zusätzlich bleibt der Durchflusskanal 4, 5 und 12 während des Giessens weitgehend von Zuschmierungen und Verstopfungen verursachenden Ablagerungen frei, zumal während des Einfahrens der Schieberplatte 2 in die Strichpunktiert ange­deutete Schliessstellung 13, deren Bohrung 5 völlig leerlaufen kann. Gleichermassen dienlich wirkt die konische Erweiterung 14, die an der Einlaufseite der Durchflussbohrung 12 der Auslauf­platte 3 vorgesehen und zweckmässig als Lochversenkung ausge­bildet ist, aber auch eine langgestrekte Konusform haben kann.This is counteracted by the embodiment according to the invention according to FIGS. 2 and 3, where the throughflow bore 12 of the stationary outlet plate 3 is not arranged congruently with the throughflow bore 4 of the stationary inlet plate 1, but is offset by a dimension X in the closing direction 8 of the slide plate 2. As a result, in the throttle position of the slide plate 2 shown in dashed lines in FIG. 2, a largely direct introduction of the melt stream into the outlet pipe 7 is avoided, avoiding premature wear at said points 10 and 11. In addition, the flow channel 4, 5 and 12 remains during the casting largely free of deposits and blockages, especially as the slide plate 2 is retracted into the closed position 13 indicated by the dash-dotted lines, the bore 5 of which can run completely empty. Equally useful is the conical widening 14, which is provided on the inlet side of the flow bore 12 of the outlet plate 3 and is expediently designed as a countersink, but can also have an elongated conical shape.

Dementsprechend kann nach Figur 4 bis 6 die Erweiterung der Auslaufplatte 3 aus Erweiterungsbereichen 15 bestehen, die sich in Verschieberichtung der Schieberplatte 2 an der Durchfluss­bohrung 16 gegenüberstehen, deren Durchmesser kleiner gehalten ist als die gleichen Durchmesser der Bohrungen 4 und 5, um den Giessstrahl zu festigen. Auch dabei kann, wie die Drosselstellung nach Figur 6 zeigt, die Schmelze nahezu umlenkungsfrei den Durch­flusskanal 4, 5 und 16 durchfliessen. Im weiteren lässt sich in manchen Fällen beispielsweise nach Figur 7 bis 9, mit einem einzigen Erweiterungsbereich 17 an der Durchflussbohrung 18 der Auslaufplatte 3, und zwar in Offen­stellungsrichtung der Schieberplatte 2 liegend, auskommen, wobei dann darauf zu achten ist, dass in der in Figur 9 veranschaulich­ten Drosselstellung, der Kantenvorsprung 19 der Auslaufplatte, so klein als möglich ausfällt.Accordingly, according to FIGS. 4 to 6, the extension of the outlet plate 3 can consist of extension areas 15 which face each other in the direction of displacement of the slide plate 2 at the flow-through hole 16, the diameter of which is kept smaller than the same diameter of the holes 4 and 5 in order to consolidate the pouring jet . Here too, as the throttle position according to FIG. 6 shows, the melt can flow through the flow channels 4, 5 and 16 almost without deflection. Furthermore, in some cases, for example according to FIGS. 7 to 9, a single extension area 17 on the flow-through bore 18 of the outlet plate 3, namely in the open position of the slide plate 2, can be used, in which case it must be ensured that in FIG 9 illustrated throttle position, the edge projection 19 of the outlet plate is as small as possible.

Ebenso wirksam ist der für Stranggiessanlagen beschriebene Plattensatz auch für Giessarbeiten geeignet, bei denen anstatt eines Auslaufrohres 7 (Tauchrohres) eine Auslaufhülse an die Auslaufplatte 3 angeschlossen ist.The plate set described for continuous casting plants is also equally effective for casting work in which an outlet sleeve is connected to the outlet plate 3 instead of an outlet pipe 7 (immersion pipe).

Claims (6)

1. Feuerfester Plattensatz für Dreiplattenschieberverschlüsse, insbesondere zum Regeln des Zuflusses von Stahlschmelze in Stranggiesskokillen, mit einem von den Durchflussbohrungen der Platten gebildeten Schmelzedurchflusskanal, dessen Durch­flussquerschnitt durch Verstellen einer Schieberplatte ver­änderbar ist, die zwischen einer ortsfesten Einlaufplatte und einer ebenfalls ortsfesten, einen feuerfesten Auslauf tragenden Auslaufplatte lagert, deren Durchflussbohrung ein vollständiges Ablaufen der Schmelze aus der Durchflussbohrung der Schieberplatte während des Schliessvorganges ermöglicht, dadurch gekennzeichnet, dass die Durchflussbohrung (12,16,18) der Auslaufplatte (3) in Schliessrichtung (8) der Schieber­platte (2) eine Achsenversetzung (X) gegenüber der Durchfluss­bohrung (4) der Einlaufplatte (1) sowie wenigstens einlauf­seitig eine konische Erweiterung (14, 15, 17) aufweist.1.Fireproof plate set for three-plate slide closures, in particular for regulating the inflow of molten steel in continuous casting molds, with a melt flow channel formed by the flow holes in the plates, the flow cross section of which can be changed by adjusting a slide plate which is between a stationary inlet plate and a likewise stationary, fireproof outlet Discharge plate supports, the flow bore of which allows the melt to flow completely out of the flow bore of the slide plate during the closing process, characterized in that the flow bore (12, 16, 18) of the discharge plate (3) in the closing direction (8) of the slide plate (2) causes an axis offset (X) has a conical widening (14, 15, 17) opposite the flow-through bore (4) of the inlet plate (1) and at least on the inlet side. 2. Plattensatz nach Anspruch 1, dadurch gekennzeichnet, dass die Achsenversetzung (X) zehn bis fünfzig Prozent des Durchmessers der Durchflussbohrung (4) der Einlaufplatte (1) beträgt.2. Plate set according to claim 1, characterized in that the axis offset (X) is ten to fifty percent of the diameter of the flow bore (4) of the inlet plate (1). 3. Plattensatz nach Anspruch 1 dadurch gekennzeichnet, dass konische Erweiterungsbereiche (15) an den in Verschiebe­richtung der Schieberplatte (2) liegenden Bohrungskanten der Auslaufplatte (3) vorgesehen sind.3. Plate set according to claim 1, characterized in that conical extension areas (15) on the in the displacement direction of the slide plate (2) lying bore edges of the outlet plate (3) are provided. 4. Plattensatz nach Anspruch 3, dadurch gekennzeichnet, dass ein einziger Erweiterungsbereich (17) in Oeffnungsrichtung der Schieberplatte (2) angeordnet ist.4. Plate set according to claim 3, characterized in that a single extension area (17) is arranged in the opening direction of the slide plate (2). 5. Plattensatz nach den Ansprüchen 1, 3 und 4, dadurch gekenn­zeichnet, dass die Ringbreite der konischen Erweiterungen (14, 15, 17) wenigstens dem Mass der Achsenversetzung ent­spricht.5. Plate set according to claims 1, 3 and 4, characterized in that the ring width of the conical extensions (14, 15, 17) corresponds at least to the degree of the axis offset. 6. Plattensatz nach den vorherigen Ansprüchen, dadurch gekenn­zeichnet, dass die Durchflussbohrung (16) der Auslaufplatte (3) im Durchmesser höchstens um das doppelte Mass der Achsenversetzung (X) kleiner gehalten ist als der Durchmesser der Durchflussbohrung (4) der Einlaufplatte (1).6. plate set according to the preceding claims, characterized in that the flow bore (16) of the outlet plate (3) is kept smaller in diameter at most by twice the amount of the axis offset (X) than the diameter of the flow bore (4) of the inlet plate (1) .
EP88114176A 1988-08-31 1988-08-31 Set of ceramic plates for sliding gate valves comprising three sliding plates Expired - Lifetime EP0356551B1 (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
AT88114176T ATE74036T1 (en) 1988-08-31 1988-08-31 FIRE RESISTANT PLATE SET FOR THREE PLATE VALVE CLOSURES.
EP88114176A EP0356551B1 (en) 1988-08-31 1988-08-31 Set of ceramic plates for sliding gate valves comprising three sliding plates
DE8888114176T DE3869609D1 (en) 1988-08-31 1988-08-31 FIRE-RESISTANT PLATE SET FOR THREE-PLATE SLIDING LATCHES.
ES198888114176T ES2031561T3 (en) 1988-08-31 1988-08-31 SET OF REFRACTORY PLATES FOR THREE-PLATE SLIDING LATCHES.
ZA895235A ZA895235B (en) 1988-08-31 1989-07-10 Refractory plate set for three-plate sliding gate valves
CA000607347A CA1340540C (en) 1988-08-31 1989-08-02 Refractory plate set of three-plate sliding gate valves
CS478989A CS273200B2 (en) 1988-08-31 1989-08-14 Refractory system of plates for three-plate slide valve closures
JP1215159A JPH0289559A (en) 1988-08-31 1989-08-23 Fireproof board device for three-board sliding closing device
AR89314757A AR241644A1 (en) 1988-08-31 1989-08-25 A set of refractory plates for a sliding closure provided with three plates.
MX017330A MX171518B (en) 1988-08-31 1989-08-28 SET OF REFRACTORY PLATES FOR THREE-PLATE SLIDING CIRCLES
US07/400,056 US4966315A (en) 1988-08-31 1989-08-29 Refractory plate assembly for a three-plate sliding closure unit
HU450689A HU209419B (en) 1988-08-31 1989-08-30 Fire-proof plate system for latch consists of three plates
SU894614846A SU1731039A3 (en) 1988-08-31 1989-08-30 Refractory disc set for three-disc closure
CN89106645A CN1018805B (en) 1988-08-31 1989-08-30 Refractory gate plate for triplate gate valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88114176A EP0356551B1 (en) 1988-08-31 1988-08-31 Set of ceramic plates for sliding gate valves comprising three sliding plates

Publications (2)

Publication Number Publication Date
EP0356551A1 true EP0356551A1 (en) 1990-03-07
EP0356551B1 EP0356551B1 (en) 1992-03-25

Family

ID=8199246

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88114176A Expired - Lifetime EP0356551B1 (en) 1988-08-31 1988-08-31 Set of ceramic plates for sliding gate valves comprising three sliding plates

Country Status (14)

Country Link
US (1) US4966315A (en)
EP (1) EP0356551B1 (en)
JP (1) JPH0289559A (en)
CN (1) CN1018805B (en)
AR (1) AR241644A1 (en)
AT (1) ATE74036T1 (en)
CA (1) CA1340540C (en)
CS (1) CS273200B2 (en)
DE (1) DE3869609D1 (en)
ES (1) ES2031561T3 (en)
HU (1) HU209419B (en)
MX (1) MX171518B (en)
SU (1) SU1731039A3 (en)
ZA (1) ZA895235B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0603480A2 (en) * 1992-11-25 1994-06-29 Stopinc Aktiengesellschaft Sliding closure in particular for a converter holding a bath of molten metal
WO1996015868A1 (en) * 1994-11-17 1996-05-30 Usx Engineers And Consultants, Inc. Gate and pour tube assembly for use in throttling gate valve
EP2543455A1 (en) * 2011-07-08 2013-01-09 Refractory Intellectual Property GmbH & Co. KG Fire-resistant ceramic sliding plate and accompanying sliding plate set

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19917851C2 (en) * 1999-04-21 2003-04-10 Didier Werke Ag Rotary valve plate
EP1296786B1 (en) * 2000-03-16 2005-11-16 Vesuvius Crucible Company Sliding gate for liquid metal flow control
AU2003902165A0 (en) * 2003-05-07 2003-05-22 Castalloy Manufacturing Pty Ltd Slide shutoff for metal flow in corecast process
TWI302493B (en) * 2006-06-13 2008-11-01 Advanced Semiconductor Eng System for supplying molding compound
FI120385B (en) * 2007-07-06 2009-10-15 Indref Oy Sealing mechanism for metering of metal melt and method for manufacturing a sealing mechanism
BRPI0910467B1 (en) * 2008-04-17 2017-08-01 Stopinc Aktiengesellschaft CLOSING PLATE AND SLIDING CLOSURE FOR THE LEAKING OF A CONTAINER FOR FUSED METAL
CN107175326A (en) * 2017-06-28 2017-09-19 秦皇岛首秦金属材料有限公司 A kind of steel ladle slide board structure
US11434775B2 (en) 2020-08-31 2022-09-06 Rolls-Royce North American Technologies Inc. Turbine engine with metered cooling system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436023A (en) * 1965-03-09 1969-04-01 Concast Ag Apparatus for altering the position of a jet of molten metal,especially for continuous casting machines
DE1910247A1 (en) * 1969-02-28 1970-09-10 Neitzel Dipl Ing Martin Device and method for pouring metallurgical melts and similar products
FR2083566A1 (en) * 1970-03-25 1971-12-17 Didier Werke Ag Molten metal reservoir slide seal - withdraw improved resistance - to corrosion
US4077457A (en) * 1974-03-06 1978-03-07 Sumitomo Metal Industries Limited Molten metal pouring control method and apparatus for use in continuous casting equipment
GB1515922A (en) * 1975-06-04 1978-06-28 Danieli Off Mecc Bottom pouring vessel with rotary sliding gate valve for molten metal
DE2817115A1 (en) * 1977-04-19 1978-10-26 Mitsubishi Heavy Ind Ltd METHOD OF CONTROLLING A SLOPE SLIDER IN CONTINUOUS CASTING
FR2433384A1 (en) * 1978-08-19 1980-03-14 Stopinc Ag THREE-PLATE DRAWER CLOSURE DEVICE
DE3509932A1 (en) * 1985-03-19 1986-10-02 Metacon AG, Zürich METHOD FOR STARTING UP A CONTINUOUS CASTING SYSTEM

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE757219A (en) * 1969-10-13 1971-03-16 Interstop Ag DISCHARGE DRAWER CLOSURE FOR METAL CASTING TANKS

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436023A (en) * 1965-03-09 1969-04-01 Concast Ag Apparatus for altering the position of a jet of molten metal,especially for continuous casting machines
DE1910247A1 (en) * 1969-02-28 1970-09-10 Neitzel Dipl Ing Martin Device and method for pouring metallurgical melts and similar products
FR2083566A1 (en) * 1970-03-25 1971-12-17 Didier Werke Ag Molten metal reservoir slide seal - withdraw improved resistance - to corrosion
US4077457A (en) * 1974-03-06 1978-03-07 Sumitomo Metal Industries Limited Molten metal pouring control method and apparatus for use in continuous casting equipment
GB1515922A (en) * 1975-06-04 1978-06-28 Danieli Off Mecc Bottom pouring vessel with rotary sliding gate valve for molten metal
DE2817115A1 (en) * 1977-04-19 1978-10-26 Mitsubishi Heavy Ind Ltd METHOD OF CONTROLLING A SLOPE SLIDER IN CONTINUOUS CASTING
FR2433384A1 (en) * 1978-08-19 1980-03-14 Stopinc Ag THREE-PLATE DRAWER CLOSURE DEVICE
DE3509932A1 (en) * 1985-03-19 1986-10-02 Metacon AG, Zürich METHOD FOR STARTING UP A CONTINUOUS CASTING SYSTEM

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0603480A2 (en) * 1992-11-25 1994-06-29 Stopinc Aktiengesellschaft Sliding closure in particular for a converter holding a bath of molten metal
EP0603480A3 (en) * 1992-11-25 1997-09-17 Stopinc Ag Sliding closure in particular for a converter holding a bath of molten metal.
WO1996015868A1 (en) * 1994-11-17 1996-05-30 Usx Engineers And Consultants, Inc. Gate and pour tube assembly for use in throttling gate valve
EP2543455A1 (en) * 2011-07-08 2013-01-09 Refractory Intellectual Property GmbH & Co. KG Fire-resistant ceramic sliding plate and accompanying sliding plate set
WO2013007526A3 (en) * 2011-07-08 2013-06-13 Refractory Intellectual Property Gmbh & Co. Kg Refractory ceramic slide plate and associated slide plate set
US9375786B2 (en) 2011-07-08 2016-06-28 Refractory Intellectual Property Gmbh & Co. Kg Refractory ceramic slide plate and associated slide plate set
EA025092B1 (en) * 2011-07-08 2016-11-30 Рифрэктори Интеллектчуал Проперти Гмбх Унд Ко. Кг Refractory ceramic slide plate and associated slide plate set

Also Published As

Publication number Publication date
MX171518B (en) 1993-11-03
US4966315A (en) 1990-10-30
CA1340540C (en) 1999-05-11
ATE74036T1 (en) 1992-04-15
JPH0289559A (en) 1990-03-29
DE3869609D1 (en) 1992-04-30
HUT54545A (en) 1991-03-28
CS478989A2 (en) 1990-06-13
HU209419B (en) 1994-06-28
EP0356551B1 (en) 1992-03-25
ES2031561T3 (en) 1992-12-16
CN1018805B (en) 1992-10-28
CN1040939A (en) 1990-04-04
ZA895235B (en) 1990-04-25
CS273200B2 (en) 1991-03-12
AR241644A1 (en) 1992-10-30
SU1731039A3 (en) 1992-04-30

Similar Documents

Publication Publication Date Title
DE2620423B2 (en) Slide plate unit for slide gate locks
EP0356551B1 (en) Set of ceramic plates for sliding gate valves comprising three sliding plates
DE2409670A1 (en) METHOD AND DEVICE FOR CONTROLLING THE FLOW OF THE MELT FROM CASTING PANS PROVIDED WITH A BOTTOM SPOUT
DE1951447C3 (en) Outflow slide closure for vessels for pouring metals
DE69819931T2 (en) immersion nozzle
DE4012093C1 (en)
DE3217016A1 (en) MIXING HEAD FOR MIXING AT LEAST TWO FLOWABLE COMPONENTS WHICH MAKE FOAM IN YOUR REACTION
DE3151282A1 (en) "FLAT SLIDE"
EP0019114B1 (en) Method and apparatus for the continuous casting of several strands
CH671536A5 (en)
EP2531651A1 (en) Valve for regulating a fluid flow
DE3805071C2 (en)
WO1990011854A1 (en) A sliding closure at the outlet of a vessel, especially one containing molten metal, and suitable fireproof closure components
CH684937A5 (en) Plate for a sliding closure of a molten metal container containing.
EP0320575B1 (en) Method for keeping open the flow conduit of slide gate nozzles in continuous casting plants
EP0630711A1 (en) Immersion nozzle
DE2417489B2 (en) Spout for metallurgical vessels
EP0226766B1 (en) Plate unit for sliding gate valves
EP2543455B1 (en) Fire-resistant ceramic sliding plate and accompanying sliding plate set
EP0400274A2 (en) Gooseneck for hot chamber-type die-casting machines
CH663365A5 (en) SEALING PLATE COUPLING FOR A SLIDING CLOSURE ON THE SPOUT OF MELT, IN PARTICULAR METAL MELT, CONTAINERS CONTAINING.
DE2459568A1 (en) LOCKING SLIDER DEVICE FOR FIRE-RESISTANT CONTAINERS
AT408962B (en) METHOD FOR PRODUCING A CONTINUOUS PRE-PRODUCT
DE2834643C2 (en)
EP0529108B1 (en) Slide gate nozzle for metallurgical vessels

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19900707

17Q First examination report despatched

Effective date: 19910326

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19920325

REF Corresponds to:

Ref document number: 74036

Country of ref document: AT

Date of ref document: 19920415

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3869609

Country of ref document: DE

Date of ref document: 19920430

ITF It: translation for a ep patent filed

Owner name: BUGNION S.P.A.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2031561

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 88114176.6

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20020802

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20030801

Year of fee payment: 16

Ref country code: AT

Payment date: 20030801

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20030820

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20030821

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030831

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030831

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20040825

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20040826

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040901

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20040907

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20040917

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20040930

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050429

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20050301

EUG Se: european patent has lapsed
REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050831

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050831

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060301

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20050831

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20050901

BERE Be: lapsed

Owner name: *METACON A.G.

Effective date: 20050831

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20070830

Year of fee payment: 20