EP1144144B1 - Method and apparatus of producing round billets - Google Patents
Method and apparatus of producing round billets Download PDFInfo
- Publication number
- EP1144144B1 EP1144144B1 EP99964428A EP99964428A EP1144144B1 EP 1144144 B1 EP1144144 B1 EP 1144144B1 EP 99964428 A EP99964428 A EP 99964428A EP 99964428 A EP99964428 A EP 99964428A EP 1144144 B1 EP1144144 B1 EP 1144144B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- horizontal
- round
- vertical
- billet
- strand
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005096 rolling process Methods 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000009749 continuous casting Methods 0.000 claims abstract description 10
- 238000005266 casting Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 10
- 238000007711 solidification Methods 0.000 claims description 10
- 230000008023 solidification Effects 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 15
- 238000003756 stirring Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005242 forging Methods 0.000 description 3
- 238000005204 segregation Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910000669 Chrome steel Inorganic materials 0.000 description 1
- 229910000915 Free machining steel Inorganic materials 0.000 description 1
- QFGIVKNKFPCKAW-UHFFFAOYSA-N [Mn].[C] Chemical compound [Mn].[C] QFGIVKNKFPCKAW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
Definitions
- the invention relates to a method and a device for producing continuously cast billets in one from a vertical continuous caster with a horizontal outlet, at least a descaling device and several subsequent rolling stands existing production facility.
- Billets produced in a vertical continuous caster with a horizontal outlet in the solidified state show material concentration differences above the Cross section on. In almost all steels, porous areas occur below the Surface and in the core area. Free-cutting steels are particularly affected. Carbon-manganese steels have segregations in the core area that make them from Z. B. complicate high-strength wires. It happens with high-carbon chrome steels for the formation of fluff in the core area, e.g. the quality of the inner surface of deteriorate rolled pipes of high precision.
- Austenitic stainless chrome-nickel steels have a high level depending on the chemical composition Proportion of 8-ferrite as the second phase, which is pronounced in the case of round billets Maximum at a distance of 0.4 to 0.7 x radius from the core and that The formability of these steels is strong in subsequent cross rolling processes reduced because the main forming zone is located in this cross-sectional area. As As a result, only low degrees of stretching can be achieved. From an average 8-ferrite content of > 4% there are general problems of formability in the form of cracks and shells.
- EMS electromagnetic stirring
- the disadvantage is that the Area near the surface is detected only to a small extent or only with vigorous stirring becomes.
- Another disadvantage is the stationary arrangement of EMS. So for that Stir the core area a second stirrer in the lower part of the continuous caster needed. Stirring too much can also cause core expansion due to the action of Conduct centrifugal force.
- the solidifying Round billets after leaving the mold and before entering the next one Descaled roller unit on its surface and the surface layer near the surface is pre-cooled to an optimal temperature for the respective steel the stick in at least three successive horizontal stitches and finally reshaped in a vertical stitch, the surface of the pre-deformed billet is descaled before the last stitch.
- the concentration differences across the cross-section e.g. in shape from segregations and second phases and their content greatly reduced becomes.
- the material density is determined by removing pores under the surface and in the Core area increased.
- the Pouring speed and / or the location of the place where the vertical stitch takes place so be controlled so that the swamp tip of the solidifying round stick in the The area between the third horizontal stitch and the vertical stitch lies and Complete solidification until at the latest when the vertical stitch is carried out to the core is guaranteed.
- This is an apparatus for performing the method according to the invention characterized in that between the vertical continuous caster and their horizontal outlet still in the arch part of the guide frame Primary descaling system and a multi-stand rolling unit with at least three successive horizontal stands are arranged and the horizontal stands in the horizontal part of the strand guide based on the position of the sump tip in Strand movement direction back and forth movable vertical frame with follow the attached descaling device.
- the round billets are in the area of the swamp tip at the end of the continuous casting arch first descaled, the surface layer near the surface is defined for one for the optimal temperature pre-cooled for each steel. Then there is one Forming first in the at least three successive horizontal stitches and the final vertical stitch, the surface of the pre-deformed Is descaled again before the last stitch.
- the number of horizontal stands results from the diameter of the billet, the casting speed and the realizable increase in the degree of vertical deformation in the horizontal stitches.
- the solidification of the core area is by choosing the Distance from the last fixed horizontal frame to the movable one Vertical frame completed. This allows the round shape of the stick in only a vertical stitch with increased decrease.
- the last of the Horizontal scaffolds can be designed to be adjustable in interaction with a downstream measuring device for measuring the height and width of the preformed The right pre-profile for billets in the sense of an automatic roll gap control to deliver the subsequent vertical circular stitch.
- the setting should be made so that the forming as uniformly as possible over the billet circumference while minimizing the tensile stress is distributed on the surface, the compressive stress on the Stick egg center is said to increase with the number of stitches and at the same time prevent spreading increases and the roundness and dimensional accuracy of the stick after exiting the Rolling unit can be guaranteed.
- the nozzles arranged in a ring around the round billet the primary descaling device with water or a water-air mixture supplied, the distance of the nozzles from the surface of the billet as well Pressure and intensity of the medium hitting the surface of the stick are optimized adjustable.
- the secondary descaling device consisting of at least one nozzle ring is flanged to the vertical scaffold and can be moved with it.
- the around the scope of the pre-deformed billets distributed in the horizontal stands are included Compressed air can be applied, the distance of the nozzles from the surface of the preformed billets and their distance from ring to ring and among themselves around the Ring circumference are optimized.
- the pre-deformation and Compression of the continuously cast primary material become pores closed, blowholes in their cross-sectional area by approx. 15 - 35% compared to the case reduced without pre-deformation. Differences in concentration in the form of segregations, Separations, second phases reduced and their content absolutely reduced.
- the pre-deformation also increases the surface quality of the billets improved and the risk of slipping in a subsequent cross rolling process reduced.
- the pre-deformed material structure enables compared to Continuous casting structure in subsequent shaping devices a higher one Degree of stretching due to higher forming capacity.
- the vertical round caster with horizontal outlet is designated, in the mold is a round billet with a diameter of between 90 and 300 mm poured and pulled down.
- the round stick 2 is in the
- the scaffold of the plant is redirected from the vertical to the horizontal direction treated in the manner according to the invention.
- the deformation takes place in one multi-stand rolling unit 4 consisting of three consecutive Horizontal rolling stands 5, each with false round calibration from two one inside the other passing radii.
- the last of the three horizontal stands is under load adjustable and provided with a roll gap control, which with the measuring device 8 for the height and width of the round stick correspond.
- a final descaling takes place at 7 after a secondary descaling Rolling the billet 2 in the vertical stand 6.
- This vertical stand 6 is in Arrow direction slidable to the location of its deformation at the location of the Adjust swamp tip of the round stick 2 so that the deformation is always in solidified area of the round stick 2 takes place.
- the location of the swamp tip can vary change according to casting speed, material and dimensions of the billet 2. In this case, the vertical frame 6 in the casting direction or in the opposite direction be shifted, or the casting speed is corresponding, possibly additional changed to shift the vertical frame 6.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Continuous Casting (AREA)
- Forging (AREA)
- Fish Paste Products (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Herstellung von stranggegossenen Knüppeln in einer aus einer Vertikal-Rundstranggießanlage mit horizontalem Auslauf, mindestens einer Entzunderungseinrichtung und mehreren nachfolgenden Walzgerüsten bestehenden Produktionsanlage.The invention relates to a method and a device for producing continuously cast billets in one from a vertical continuous caster with a horizontal outlet, at least a descaling device and several subsequent rolling stands existing production facility.
In einer Vertikal-Rundstranggießanlage mit horizontalem Auslauf erzeugte Knüppel weisen im erstarrten Zustand Materialkonzentrationsunterschiede über den Querschnitt auf. So treten bei fast allen Stählen poröse Stellen unterhalb der Oberfläche und im Kembereich auf. Besonders betroffen sind Automatenstähle. Kohlenstoff-Mangan-Stähle besitzen Seigerungen im Kernbereich, die die Herstellung von z. B. hochfesten Drähten erschweren. Bei hochgekohlten Chromstählen kommt es zur Bildung von Flusen im Kembereich, die z.B. die Qualität der Innenoberfläche von gewalzten Rohren hoher Präzision verschlechtern. Austenitisch rostfreie Chrom-Nickel-Stähle weisen je nach chemischer Zusammensetzung einen zum Teil hohen Anteil an 8-Ferrit als zweite Phase auf, der bei Rundknüppeln ein ausgeprägtes Maximum im Abstand von 0,4 bis 0,7 x Radius vom Kern hat und das Umformvermögen dieser Stähle bei nachfolgenden Schrägwalzprozessen stark herabsetzt, da sich in diesem Querschnittsbereich die Hauptumformzone befindet. Als Folge sind nur geringe Streckgrade realisierbar. Ab einem mittleren 8-Ferritgehalt von > 4 % gibt es generelle Probleme der Umformbarkeit in Form von Rissen und Schalen.Billets produced in a vertical continuous caster with a horizontal outlet in the solidified state show material concentration differences above the Cross section on. In almost all steels, porous areas occur below the Surface and in the core area. Free-cutting steels are particularly affected. Carbon-manganese steels have segregations in the core area that make them from Z. B. complicate high-strength wires. It happens with high-carbon chrome steels for the formation of fluff in the core area, e.g. the quality of the inner surface of deteriorate rolled pipes of high precision. Austenitic stainless chrome-nickel steels have a high level depending on the chemical composition Proportion of 8-ferrite as the second phase, which is pronounced in the case of round billets Maximum at a distance of 0.4 to 0.7 x radius from the core and that The formability of these steels is strong in subsequent cross rolling processes reduced because the main forming zone is located in this cross-sectional area. As As a result, only low degrees of stretching can be achieved. From an average 8-ferrite content of > 4% there are general problems of formability in the form of cracks and shells.
Die Ursachen dieser Materialinhomogenitäten sind vielfältig. Genannt seien hier beispielhaft Materialdaten, Materialverunreinigungen, Schmelzentemperatur, Gießpulver, Kokillenbeschaffenheit, Erstarrungsgeschwindigkeit und Gießgeschwindigkeit. The causes of these material inhomogeneities are diverse. May be mentioned here exemplary material data, material contamination, melt temperature, Casting powder, mold quality, solidification speed and Casting speed.
Zur Verbesserung der Oberflächenqualität von Metallsträngen ist es bekannt, nach dem Gießen, und zwar möglichst nahe dem Kokillenaustritt und bevor der Strang mit Spritzwasser in Berührung kommt, von der Oberfläche des Stranges Schlacke, Zunder und dergleichen Fremdstoffe abzusaugen ( DE 41 23 956 C2).To improve the surface quality of metal strands, it is known to the casting, as close as possible to the mold outlet and before the strand with Splashing water comes in contact with slag, scale from the surface of the strand and to suck off foreign matter of the same type (DE 41 23 956 C2).
Es sind verschiedene Maßnahmen zur Minderung bzw. Verhinderung o.g. Materialinhomogenitäten bekannt. Eine Möglichkeit ist die Verringerung der Gießgeschwindigkeit, um die Abkühlgeschwindigkeit im Bereich Kokille und Sekundärkühlung zu erhöhen. Nachteile sind die Gefahr des Einfrieren des Verteilers der Stranggießanlage und die verringerte Produktion.There are various measures to reduce or prevent the above. Known material inhomogeneities. One way is to reduce the Casting speed to the cooling rate in the mold and To increase secondary cooling. Disadvantages are the risk of the distributor freezing of the continuous caster and the reduced production.
Eine weitere Möglichkeit ist das elektromagnetische Rühren (EMS) der erstarrenden Schmelze im Strang mit dem Vorteil des Brechens der erstarrenden Kristallite, der Durchmischung und der sich ergebenden feinglobulitischen Erstarrungsstruktur in einem großen inneren Bereich des Strangquerschittes. Nachteilig ist, daß der oberflächennahe Bereich in nur geringem Maße oder nur bei starkem Rühren erfaßt wird. Ein weiterer Nachteil ist die stationäre Anordnung von EMS. So wird für das Rühren des Kernbereiches ein zweiter Rührer im unteren Teil der Stranggießanlage benötigt. Zu starkes Rühren kann auch zur Kernaufweitung infolge des Wirkens der Zentrifugalkraft führen.Another possibility is the electromagnetic stirring (EMS) of the solidifying Melt in the strand with the advantage of breaking the solidifying crystallites Mixing and the resulting fine globular solidification structure in a large inner area of the strand cross section. The disadvantage is that the Area near the surface is detected only to a small extent or only with vigorous stirring becomes. Another disadvantage is the stationary arrangement of EMS. So for that Stir the core area a second stirrer in the lower part of the continuous caster needed. Stirring too much can also cause core expansion due to the action of Conduct centrifugal force.
Eine anderer Vorschlag, der beim Stranggießen von quadratischen oder rechteckigen Knüppeln angewendet wird, ist der Ersatz der Ausziehtreiber durch sog. feststehende Zangengerüste im Bereich des Stranggußbogens, in denen der Knüppel abwechselnd zwischen glatten horizontalen und vertikalen Rollenpaaren bei noch flüssigem Kern verformt wird. Die vertikalen Rollenpaare müssen das in den Horizontalstichen gebreitete bzw. ausgebauchte Material zurückdrücken. Die Möglichkeiten der Umformung, d.h. der Höhenabnahme, sind begrenzt, da die Lage der Sumpfspitze infolge unterschiedlicher Stähle, Knüppelquerschnitte, Gieß- und Erstarrungsgeschwindigkeit veränderlich ist. Bei rißempfindlichen Stählen ist die Umformung der Kanten- und Eckenbereiche des Knüppelquerschnitts besonders kritisch. Aus diesen Gründen ist die Anwendbarkeit dieser Möglichkeit auf bestimmte Stähle begrenzt.Another proposal that applies to the continuous casting of square or rectangular Sticks is used, the replacement of the pull-out driver with so-called fixed Forceps in the area of the continuous casting arch, in which the billet alternately between smooth horizontal and vertical roller pairs with the core still liquid is deformed. The vertical pairs of rolls must do this in the horizontal stitches Push back the expanded or bulged material. The possibilities of Forming, i.e. the decrease in altitude are limited because of the location of the swamp tip due to different steels, billet cross sections, casting and Solidification rate is variable. In the case of steels sensitive to cracks, this is Forming the edge and corner areas of the billet cross-section in particular critical. For these reasons, this option is applicable to certain Steels limited.
Schließlich wird eine weitere Möglichkeit praktiziert, nämlich das Schmieden von quadratischen oder rechteckigen Knüppeln mit großen Abmessungen in Höhe und Breite bei noch flüssigem Kern. Vorteilhaft dabei ist die größere Drucklänge, die beim Schmieden gegenüber dem Walzen erreichbar ist, wodurch ein größerer Grad der Verdichtung des Kernbereichs erzielt werden kann. Nachteilig ist die offensichtliche Begrenzung des Verfahrens auf große Querschnitte, da eine Positionierung eines Schmiedeaggregates im Bereich des Stranggußbogens nicht möglich ist.Finally, another possibility is practiced, namely the forging of square or rectangular billets with large dimensions in height and Width with the core still liquid. The advantage here is the longer print length, the Forging versus rolling is achievable, creating a greater degree of Compaction of the core area can be achieved. The obvious is disadvantageous Limitation of the method to large cross sections, since a positioning of a Forging aggregate in the area of the continuous casting is not possible.
Dem gesamten geschilderten Stand der Technik ist gemeinsam, daß die Möglichkeiten der Beeinflußung von unterschiedlichen Materialkonzentrationen über den Knüppelquerschnitt, insbesondere bei Vertikal-Rundstranggießanlage mit horizontalem Auslauf eingeschränkt sind.The entire described prior art has in common that the possibilities the influence of different material concentrations on the Billet cross-section, especially in the case of vertical continuous casting with horizontal Are restricted.
Ausgehend von den Problemen und Nachteilen des Standes der Technik besteht die Aufgabe der vorliegenden Erfindung darin, ein Verfahren und eine Vorrichtung zur Herstellung von Rundknüppeln mit einem Durchmesser zwischen 90 und 300 mm zu finden, das bzw. die bei entsprechender Anwendung die nachteiligen Materialinhomogenitäten über den Querschnitt abbaut und absolut absenkt.Based on the problems and disadvantages of the prior art, there is Object of the present invention therein, a method and an apparatus for Manufacture of round billets with a diameter between 90 and 300 mm too find that the disadvantageous when used accordingly Material inhomogeneities are reduced across the cross-section and absolutely reduced.
Erfindungsgemäß wird zur Lösung dieser Aufgabe vorgeschlagen, daß der erstarrende Rundknüppel nach Austritt aus der Kokille und vor Einlauf in die nachfolgende Walzeinheit an seiner Oberfläche entzundert und die oberflächennahe Randschicht definiert auf eine für den jeweiligen Stahl optimale Temperatur vorgekühlt wird, bevor der Rundknüppel in zunächst mindestens drei aufeinanderfolgenden Horizontalstichen und abschließend in einem Vertikalstich umgeformt wird, wobei die Oberfläche des vorverformten Knüppels vor dem letzten Stich nochmals entzundert wird.According to the invention it is proposed to solve this problem that the solidifying Round billets after leaving the mold and before entering the next one Descaled roller unit on its surface and the surface layer near the surface is pre-cooled to an optimal temperature for the respective steel the stick in at least three successive horizontal stitches and finally reshaped in a vertical stitch, the surface of the pre-deformed billet is descaled before the last stitch.
Mit den erfindungsgemäßen Maßnahmen wird erreicht, daß durch die Inline-Vervorformung der äußeren Ringschicht mit Verdichtung bei flüssigem und festem Kern und die nahezu vollständige Verdichtung des Kernbereichs des Rundknüppels je nach Stahimarke die Konzentrationsunterschiede über den Querschnitt z.B. in Form von Seigerungen und zweiten Phasen abgebaut und deren Gehalt stark verringert wird. Die Materialdichte wird durch Beseitigung von Poren unter der Oberfläche und im Kernbereich erhöht.With the measures according to the invention it is achieved that through the inline preforming the outer ring layer with compression for liquid and solid Core and the almost complete compression of the core area of the billet each according to the steel brand, the concentration differences across the cross-section e.g. in shape from segregations and second phases and their content greatly reduced becomes. The material density is determined by removing pores under the surface and in the Core area increased.
Nach einem ausgestaltenden Merkmal der Erfindung ist vorgesehen, daß der Rundknüppel in den Horizontalstichen mit wachsendem Höhenumformgrad von ϕ = 0,01 bis 0,15 bei gleichzeitig infolge der fortschreitenden Erstarrung abnehmendem Durchmesser des flüssigen Kerns umgeformt wird und der Vertikalstich nach völliger Durcherstarrung des Rundknüppels im horizontalen Auslaufbereich der Produktionsanlage an einem Ort erfolgt, dessen Lage relativ zum Ort der Horizontalumformung in Achsrichtung des Stranges verstellbar ist.According to a design feature of the invention it is provided that the Round billets in horizontal stitches with increasing degree of deformation from ϕ = 0.01 to 0.15 while decreasing due to the progressive solidification The diameter of the liquid core is reshaped and the vertical stitch after complete Solidification of the round billet in the horizontal outlet area of the Production plant takes place in a location whose location is relative to the location of the Horizontal forming is adjustable in the axial direction of the strand.
Durch zunehmende Umformung in den Horizontalstichen bei abnehmendem Durchmesser des flüssigen Kerns und durch den anschließenden Vertikalstich, dessen Ort in Abhängigkeit von dem zu verwalzenden Material und den Abmessungen des Rundknüppels in den Bereich des durcherstarrten Kerns verschoben werden kann, wird eine für nachgelagerte Umformprozeßstufen vorverformte Materialstruktur in einer äußeren Ringschicht mit einer Dicke von 2 des halben Radius bei nahezu vollständig verdichtetem Kernbereich erzeugt.Due to the increasing reshaping in the horizontal stitches with a decreasing diameter of the liquid core and the subsequent vertical stitch, the location of which can be shifted into the area of the solidified core depending on the material to be rolled and the dimensions of the round billet, a material structure pre-deformed for downstream forming process stages in an outer ring layer with a thickness of 2 half the radius with an almost completely compressed core area.
Dazu wird nach einem weiteren Merkmal der Erfindung vorgesehen, daß die Gießgeschwindigkeit und/oder die Lage des Ortes, an dem der Vertikalstich erfolgt, so gesteuert werden, daß die Sumpfspitze des erstarrenden Rundknüppels in dem Bereich zwischen dem dritten Horizontalstich und dem Vertikalstich liegt und spätestens beim Ausführen des Vertikalstiches eine vollständige Durcherstarrung bis zum Kern gewährleistet ist.For this purpose, it is provided according to a further feature of the invention that the Pouring speed and / or the location of the place where the vertical stitch takes place, so be controlled so that the swamp tip of the solidifying round stick in the The area between the third horizontal stitch and the vertical stitch lies and Complete solidification until at the latest when the vertical stitch is carried out to the core is guaranteed.
Eine Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens ist dadurch gekennzeichnet, daß zwischen der Vertikal-Rundstranggießanlage und deren horizontalem Auslauf noch im Bogenteil des Führungsgerüstes eine Primärentzunderungsanlage und eine mehrgerüstige Walzeinheit mit mindestens drei aufeinanderfolgenden Horizontalgerüsten angeordnet sind und den Horizontalgerüsten im waagerechten Teil der Strangführung ein bezogen auf die Lage der Sumpfspitze in Strangbewegungsrichtung vor und zurück bewegliches Vertikalgerüst mit angeflanschter Sekundärentzunderungseinrichtung folgen.This is an apparatus for performing the method according to the invention characterized in that between the vertical continuous caster and their horizontal outlet still in the arch part of the guide frame Primary descaling system and a multi-stand rolling unit with at least three successive horizontal stands are arranged and the horizontal stands in the horizontal part of the strand guide based on the position of the sump tip in Strand movement direction back and forth movable vertical frame with Follow the attached descaling device.
Die Rundknüppel werden im Bereich der Sumpfspitze am Ende des Stranggußbogens zunächst entzundert, die oberflächennahe Randschicht wird definiert auf eine für den jeweiligen Stahl optimale Temperatur vorgekühlt. Anschließend erfolgt eine Umformung zunächst in den mindestens drei aufeinanderfolgenden Horizontalstichen und dem abschließenden Vertikalstich, wobei die Oberfläche des vorverformten Knüppels vor dem letzten Stich nochmals entzundert wird. Durch die Umformung in horizontaler und vertikaler Richtung entsteht die gewünschte für nachgelagerte Umformprozeßstufen günstige vorverformte Materialstruktur mit nahezu vollständig verdichtetem Kernbereich.The round billets are in the area of the swamp tip at the end of the continuous casting arch first descaled, the surface layer near the surface is defined for one for the optimal temperature pre-cooled for each steel. Then there is one Forming first in the at least three successive horizontal stitches and the final vertical stitch, the surface of the pre-deformed Is descaled again before the last stitch. By transforming into horizontal and vertical direction creates the desired for downstream Forming process stages cheap pre-formed material structure with almost complete compacted core area.
Die Anzahl der Horizontalgerüste resultiert aus dem Durchmesser des Rundknüppels, der Gießgeschwindigkeit und der realisierbaren Steigerung des Höhenumformgrades in den Horizontalstichen. Die Erstarrung des Kembereiches ist durch Wahl des Abstandes vom letzten feststehenden Horizontalgerüst zum verschiebbaren Vertikalgerüst abgeschlossen. Dadurch kann die runde Form des Knüppels in nur einem Vertikalstich mit erhöhter Abnahme wieder hergestellt werden.The number of horizontal stands results from the diameter of the billet, the casting speed and the realizable increase in the degree of vertical deformation in the horizontal stitches. The solidification of the core area is by choosing the Distance from the last fixed horizontal frame to the movable one Vertical frame completed. This allows the round shape of the stick in only a vertical stitch with increased decrease.
Nach einem ergänzenden Merkmal der Erfindung kann das letzte der Horizontalgerüste unter Last anstellbar ausgeführt sein, um im Zusammenspiel mit einem nachgeordneten Meßgerät für Messung von Höhe und Breite des vorverformten Knüppels im Sinne einer automatischen Walzspaltregelung das richtige Vorprofil für den nachfolgenden vertikalen Rundstich zu liefern. Die Einstellung soll so erfolgen, daß die Umformung möglichst gleichmäßig über den Knüppelumfang bei Minimierung der Zugspannungen an der Oberfläche verteilt wird, die Druckspannung auf das Knüppeizentrum soll mit wachsender Stichzahl bei gleichzeitiger Breitungsbehinderung erhöht und die Rundheit und Maßhaltigkeit des Knüppels nach Austritt aus der Walzeinheit gewährleistet sein.According to a supplementary feature of the invention, the last of the Horizontal scaffolds can be designed to be adjustable in interaction with a downstream measuring device for measuring the height and width of the preformed The right pre-profile for billets in the sense of an automatic roll gap control to deliver the subsequent vertical circular stitch. The setting should be made so that the forming as uniformly as possible over the billet circumference while minimizing the tensile stress is distributed on the surface, the compressive stress on the Stick egg center is said to increase with the number of stitches and at the same time prevent spreading increases and the roundness and dimensional accuracy of the stick after exiting the Rolling unit can be guaranteed.
Erfindungsgemäß werden die um den Rundknüppel ringförmig angeordneten Düsen der Primärentzunderungseinrichtung mit Wasser oder einem Wasser-Luft-Gemisch versorgt, wobei der Abstand der Düsen von der Oberfläche des Rundknüppels sowie Druck und Intensität des auf die Oberfläche des Rundknüppels auftreffenden Mediums optimiert einstellbar sind.According to the invention, the nozzles arranged in a ring around the round billet the primary descaling device with water or a water-air mixture supplied, the distance of the nozzles from the surface of the billet as well Pressure and intensity of the medium hitting the surface of the stick are optimized adjustable.
Die aus mindestens einem Düsenring bestehende Sekundärentzunderunsgeinrichtung ist am Vertikalgerüst angeflanscht und mit diesem verschiebbar. Die um den Umfang des in den Horizontalgerüsten vorverformten Knüppels verteilten Düsen sind mit Druckluft beaufschlagbar, wobei der Abstand der Düsen von der Oberfläche des vorverformten Knüppels und ihr Abstand von Ring zu Ring und untereinander um den Ringumfang optimiert sind.The secondary descaling device consisting of at least one nozzle ring is flanged to the vertical scaffold and can be moved with it. The around the scope of the pre-deformed billets distributed in the horizontal stands are included Compressed air can be applied, the distance of the nozzles from the surface of the preformed billets and their distance from ring to ring and among themselves around the Ring circumference are optimized.
Durch die erfindungsgemäßen Maßnahmen, insbesondere der Vorverformung und Verdichtung des stranggegossenen Vormaterials, werden je nach Stahlqualität Poren geschlossen, Lunker in ihrer Querschnittsfläche um ca. 15 - 35 % gegenüber dem Fall ohne Vorverformung reduziert. Konzentrationsunterschiede in Form von Seigerungen, Entmischungen, zweiten Phasen abgebaut sowie deren Gehalt absolut verringert. Durch die Vorverformung werden außerdem die Oberflächenqualität der Rundknüppel verbessert und die Rutschgefahr bei einem nachfolgenden Schrägwalzprozeß verringert. Die vorverformte Materialstruktur ermöglicht im Vergleich zur Stranggußstruktur in nachfolgenden Verformungseinrichtungen einen höheren Streckgrad infolge höheren Umformvermögens.Through the measures according to the invention, in particular the pre-deformation and Compression of the continuously cast primary material, depending on the steel quality, become pores closed, blowholes in their cross-sectional area by approx. 15 - 35% compared to the case reduced without pre-deformation. Differences in concentration in the form of segregations, Separations, second phases reduced and their content absolutely reduced. The pre-deformation also increases the surface quality of the billets improved and the risk of slipping in a subsequent cross rolling process reduced. The pre-deformed material structure enables compared to Continuous casting structure in subsequent shaping devices a higher one Degree of stretching due to higher forming capacity.
Ein Ausführungsbeispiel der erfindungsgemäßen Produktionsanlage für die Erzeugung von verformten Rundstrangguß ist in der Zeichnung dargestellt und wird nachfolgend beschrieben. An embodiment of the production plant according to the invention for the generation of deformed round casting is shown in the drawing and is shown below described.
Mit 1 ist die Vertikal-Rundstranggießanlage mit horizontalem Auslauf bezeichnet, in
deren Kokille ein Rundknüppel mit einem Durchmesser von zwischen 90 und 300 mm
gegossen und nach unten abgezogen wird. Der Rundknüppel 2 wird in dem
Bogengerüst der Anlage von der vertikalen in die horizontale Richtung umgelenkt und
dabei in erfindungsgemäßer Weise behandelt. Dazu wird zunächst der im Inneren
noch flüssige Rundknüppel in einer Primärentzunderungseinrichtung entzundert und
gleichzeitig gekühlt, um die Oberflächenbedingungen für die nachfolgende
Walzverformung des Rundkriüppels zu schaffen. Die Verformung erfolgt in einer
mehrgerüstigen Walzeinheit 4, bestehend aus drei aufeinanderfolgenden
Horizontalwalzgerüsten 5, jeweils mit Falschrundkalibrierung aus zwei ineinander
übergehenden Radien. Das letzte der drei Horizontalwalzgerüste ist unter Last
anstellbar und mit einer Walzspaltregelung versehen, die mit der Meßeinrichtung 8 für
die Höhe und Breite des Rundknüppels korrespondiert. Erkennbar endet die
Sumpfspitze des flüssigen Kerns kurz hinter dem letzten der Horizontalwalzgerüste 5
der Walzeinheit 4. In dem Bereich, in dem der Rundknüppel 2 mit Sicherheit
durcherstarrt ist, erfolgt nach einer Sekundärentzunderung bei 7 ein abschließendes
Walzen des Rundknüppels 2 in dem Vertikalgerüst 6. Dieses Vertikalgerüst 6 ist in
Pfeilrichtung verschiebbar, um den Ort seiner Verformung an die Lage der
Sumpfspitze des Rundknüppels 2 so anzupassen, das die Verformung stets im
erstarrten Bereich des Rundknüppels 2 erfolgt. Die Lage der Sumpfspitze kann sich je
nach Gießgeschwindigkeit, Material und Abmessung des Rundknüppels 2 verändern.
In diesem Fall kann das Vertikalgerüst 6 in Gießrichtung oder entgegengesetzt
verschoben werden, oder die Gießgeschwindigkeit wird entsprechend, ggf. zuzsätzlich
zur Verschiebung des Vertikalgerüstes 6 verändert.With 1 the vertical round caster with horizontal outlet is designated, in
the mold is a round billet with a diameter of between 90 and 300 mm
poured and pulled down. The
Claims (8)
- Method of producing continuously cast billets in a production plant consisting of a vertical round-strand casting plant with a horizontal run-out, at least one descaling device and a plurality of subsequent rolling mills, characterised in that in order to produce round billets having a diameter of between 90 and 300 mm, the solidifying round billet, after emerging from the mould and before entering the subsequent rolling mill is descaled at its surface and the peripheral layer close to the surface is precooled in a specified manner to a temperature which is optimum for the respective steel before the round billet is re-shaped first in at least three consecutive horizontal roll passes and then in a vertical roll pass, the surface of the pre-deformed billet being descaled once more before the last roll pass.
- Method according to claim 1, characterised in that the round billet is re-shaped in the horizontal roll passes with an increasing degree of vertical re-shaping of =0.01 to 0.15 simultaneously with a decrease in diameter of the liquid core that progresses with solidification, and the vertical roll pass takes place after complete solidification of the round billet in the horizontal run-out region of the production plant, in a place whose position relative to the site of horizontal re-shaping is displaceable in the axial direction of the strand.
- Method according to claim 1 and 2, characterised in that the casting rate and/or the position of the site at which the vertical roll pass takes place are so controlled that the tip of the liquid core of the solidifying round billet lies in the region between the third horizontal roll pass and the vertical roll pass, and complete solidification up to the core is assured at the latest upon execution of the vertical roll pass.
- Apparatus for carrying out the method of producing continuously cast billets in a production plant consisting of a vertical round-strand casting plant with a horizontal run-out, at least one descaling device and a plurality of subsequent rolling mills, characterised in that, disposed between the vertical round-strand casting plant (1) and its horizontal run-out, still in the curved part of the guide frame, are a primary descaling plant (3) and a multi-stand rolling mill (4) with at least three consecutive horizontal stands (5), and following the horizontal roll stands (5), in the horizontal part of the strand guide, relative to the position of the liquid core and in the direction of motion of the strand, is a vertical stand (6) which moves to and fro and has a flanged-on secondary descaling device (7).
- Device according to claim 4, characterised in that the rollers of the horizontal stands (5) are each equipped with a false-round calibration, consisting of two merging radii, the last horizontal frame (5) is equipped with a roller gap adjustment under load, and the rollers of the vertical stand (6) are equipped with a cut-out round calibration.
- Device according to claim 4 or 5, characterised in that the nozzles of the primary descaling device (3) disposed in an annular manner around the round billets (2) are supplied with water or a water-air mixture and the distance of the nozzles from the surface of the round billet (2) and the pressure and intensity of the medium hitting the surface of the round billet (2) are adjustable in an optimised manner.
- Device according to claim 4 or 5, characterised in that the secondary descaling device 97) consisting of at least one nozzle ring is flanged on to the vertical rolling mill (6) and is displaceable therewith, and the nozzles distributed around the circumference of.the round billet (2) pre-formed in the horizontal rolling mills (5) can be acted on with compressed air, the distance of the nozzles from the surface of the pre-formed round billet (2) and their distance from ring to ring and from one another around the ring circumference are optimised.
- Device according to claim 7, characterised in that the last of the horizontal mills (5) are adjustable under load.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19860570 | 1998-12-22 | ||
| DE19860570A DE19860570C1 (en) | 1998-12-22 | 1998-12-22 | Process for the production of round billets |
| PCT/DE1999/003959 WO2000037200A1 (en) | 1998-12-22 | 1999-12-07 | Method of producing round billets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1144144A1 EP1144144A1 (en) | 2001-10-17 |
| EP1144144B1 true EP1144144B1 (en) | 2002-07-03 |
Family
ID=7893020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99964428A Expired - Lifetime EP1144144B1 (en) | 1998-12-22 | 1999-12-07 | Method and apparatus of producing round billets |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US6491771B1 (en) |
| EP (1) | EP1144144B1 (en) |
| JP (1) | JP4430828B2 (en) |
| KR (1) | KR100658647B1 (en) |
| CN (1) | CN1170646C (en) |
| AT (1) | ATE219977T1 (en) |
| AU (1) | AU3031200A (en) |
| BR (1) | BR9916414A (en) |
| CA (1) | CA2356609C (en) |
| DE (2) | DE19860570C1 (en) |
| ES (1) | ES2176042T3 (en) |
| WO (1) | WO2000037200A1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10325955A1 (en) * | 2003-06-07 | 2004-12-23 | Sms Demag Ag | Process and plant for producing steel products with the best surface quality |
| CN100382906C (en) * | 2005-04-21 | 2008-04-23 | 天津钢铁有限公司 | High-carbon steel wire rod manufacturing technique |
| CN100560250C (en) * | 2007-10-29 | 2009-11-18 | 江阴兴澄特种钢铁有限公司 | On the circular-arc type continuous casting machine of R12～14m, produce the continuous casting process of super large standard round billet |
| EP2263816A1 (en) * | 2009-06-03 | 2010-12-22 | Concast Ag | Method and apparatus for guiding and straightening a strand in a continuous acsting machine for round billets of large cross-section |
| CN101885133B (en) * | 2010-07-15 | 2012-05-09 | 武汉钢铁(集团)公司 | Method for improving homogeneity of steel structure and equipment thereof |
| JP5825456B2 (en) * | 2013-06-20 | 2015-12-02 | 新日鐵住金株式会社 | Continuous casting method for slabs |
| CN103894572B (en) * | 2014-04-10 | 2016-09-07 | 北京科技大学 | A kind of continuous casting billet preprocess method |
| CN105363867B (en) * | 2015-09-25 | 2018-01-05 | 石家庄安瑞科气体机械有限公司 | The processing technology of big volume heavy wall high-pressure hydrogen storing steel inner bag |
| CN110181018B (en) * | 2018-05-17 | 2022-01-14 | 江阴兴澄特种钢铁有限公司 | Continuous casting billet thickness on-line measurement and reduction adjustment system |
| KR102170939B1 (en) * | 2018-11-27 | 2020-10-29 | 주식회사 포스코 | Rolling material processing equipment and processing method |
| CN109622904B (en) | 2019-02-01 | 2020-06-02 | 东北大学 | Device and method for realizing core pressing process in continuous casting round billet solidification process |
| CN110385410B (en) * | 2019-08-01 | 2024-07-09 | 中冶赛迪工程技术股份有限公司 | Continuous casting equipment and process thereof |
| CN113333707B (en) * | 2021-06-11 | 2022-08-05 | 陕钢集团汉中钢铁有限责任公司 | Method for casting rectangular blank in non-clamping section of R10-meter arc continuous casting machine |
| CN114054700B (en) * | 2021-10-15 | 2022-11-15 | 东北大学 | Method and device for pressing round billet |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT280191B (en) * | 1966-12-01 | 1970-04-10 | Gerb Boehler & Co Ag | Process for the production of rolled products from continuously cast products using two pairs of rolls |
| JPS6186057A (en) * | 1984-10-05 | 1986-05-01 | Nippon Kokan Kk <Nkk> | Continuous casting method of round billet |
| JPH069707B2 (en) * | 1988-10-28 | 1994-02-09 | 新日本製鐵株式会社 | Descaling method for continuously cast steel billets |
| DE4010963A1 (en) * | 1990-04-05 | 1991-10-10 | Schloemann Siemag Ag | Continuous cast metal cleaner - has scrapers on both sides of metal under the die to detach scale and slag |
| DE4123956C2 (en) * | 1991-07-19 | 1994-07-21 | Thyssen Stahl Ag | Process and plant for producing a metal strand by casting |
| US5832985A (en) * | 1994-10-20 | 1998-11-10 | Mannesmann Aktiengesellschaft | Process and device for producing a steel strip with the properties of a cold-rolled product |
-
1998
- 1998-12-22 DE DE19860570A patent/DE19860570C1/en not_active Expired - Fee Related
-
1999
- 1999-12-07 AU AU30312/00A patent/AU3031200A/en not_active Abandoned
- 1999-12-07 BR BR9916414-0A patent/BR9916414A/en not_active IP Right Cessation
- 1999-12-07 JP JP2000589298A patent/JP4430828B2/en not_active Expired - Fee Related
- 1999-12-07 KR KR1020017007992A patent/KR100658647B1/en not_active IP Right Cessation
- 1999-12-07 WO PCT/DE1999/003959 patent/WO2000037200A1/en active IP Right Grant
- 1999-12-07 EP EP99964428A patent/EP1144144B1/en not_active Expired - Lifetime
- 1999-12-07 AT AT99964428T patent/ATE219977T1/en not_active IP Right Cessation
- 1999-12-07 CN CNB998150045A patent/CN1170646C/en not_active Expired - Fee Related
- 1999-12-07 CA CA002356609A patent/CA2356609C/en not_active Expired - Fee Related
- 1999-12-07 DE DE59901981T patent/DE59901981D1/en not_active Expired - Lifetime
- 1999-12-07 US US09/868,807 patent/US6491771B1/en not_active Expired - Fee Related
- 1999-12-07 ES ES99964428T patent/ES2176042T3/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE59901981D1 (en) | 2002-08-08 |
| JP2002532259A (en) | 2002-10-02 |
| WO2000037200A1 (en) | 2000-06-29 |
| DE19860570C1 (en) | 2000-10-05 |
| AU3031200A (en) | 2000-07-12 |
| KR100658647B1 (en) | 2006-12-15 |
| CA2356609A1 (en) | 2000-06-29 |
| BR9916414A (en) | 2001-09-18 |
| EP1144144A1 (en) | 2001-10-17 |
| JP4430828B2 (en) | 2010-03-10 |
| ES2176042T3 (en) | 2002-11-16 |
| CN1170646C (en) | 2004-10-13 |
| KR20010089679A (en) | 2001-10-08 |
| CN1331616A (en) | 2002-01-16 |
| US6491771B1 (en) | 2002-12-10 |
| ATE219977T1 (en) | 2002-07-15 |
| CA2356609C (en) | 2008-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1318876B1 (en) | Method and installation for producing metal strips and sheets | |
| EP1144144B1 (en) | Method and apparatus of producing round billets | |
| EP2349612B2 (en) | Method and continuous casting plant for manufacturing thick slabs | |
| DE69812712T2 (en) | METHOD AND DEVICE FOR PRODUCING STEEL STRIP WITH HIGH STRENGTH | |
| WO2009141207A1 (en) | Method and continuous casting plant for producing thick slabs | |
| WO2006072311A1 (en) | Continuous steel casting installation for billet and bloom formats | |
| WO2010149351A1 (en) | Device and method for horizontal casting of a metal band | |
| EP3016762B1 (en) | Cast-rolling installation and method for producing metallic rolled stock | |
| EP3705202B1 (en) | Conversion of a continuous casting plant for billet or bloom strands | |
| EP1132161B1 (en) | Process for continuous casting slabs, especially thin slabs | |
| WO2015014865A1 (en) | Continuous casting and rolling installation for producing metal strips | |
| EP1050355B1 (en) | Process for the production of continuously cast steel products | |
| DE10302265A1 (en) | Manufacture of continuously-cast steel slab, includes stage of high-energy deformation at high temperature to reduce depth of vibration markings in product | |
| EP1385656B1 (en) | Method for continuously casting ingots, slabs or thin slabs | |
| DE19639299A1 (en) | Method and device for producing a polygonal or profile format in a continuous caster | |
| EP1827735B1 (en) | Method and device for continuous casting of metals | |
| DE3236284C2 (en) | Device for the production of steel strands in an oval arc continuous casting machine | |
| EP1381482B1 (en) | Method and device for the production of continuous casting input stock | |
| DE10144234A1 (en) | Method and device for optimizing the quality of cast strands with round or approximately round cross sections | |
| EP4374986A1 (en) | Continuous casting installation, in particular for casting metallurgical long products, and a casting tube | |
| DE10114269C1 (en) | Production of a hot strip comprises inserting liquid steel between two opposing rotating casting rollers in a two roller thin strip casting device, solidifying the strand skins to a defined thickness, and deforming to a final thickness | |
| DE1458013C (en) | Method and device for the continuous production of a profiled steel strand 4nm Concast 4G, which can be divided into several partial strands, Zurich (Switzerland) | |
| DE1458013A1 (en) | Method and device for the continuous production of profiled trains | |
| DE1433023B (en) | Method for producing billets from a cast strand and device for carrying out the method | |
| CH436586A (en) | Centrifugal casting and continuous casting process for the production of metallic strips or rod-shaped material and device for carrying out the process |
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 |
|
| 17P | Request for examination filed |
Effective date: 20010619 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| RTI1 | Title (correction) |
Free format text: METHOD AND APPARATUS OF PRODUCING ROUND BILLETS |
|
| 17Q | First examination report despatched |
Effective date: 20011122 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| 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 CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE 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: 20020703 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: 20020703 Ref country code: FI 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: 20020703 |
|
| REF | Corresponds to: |
Ref document number: 219977 Country of ref document: AT Date of ref document: 20020715 Kind code of ref document: T |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: GERMAN |
|
| REF | Corresponds to: |
Ref document number: 59901981 Country of ref document: DE Date of ref document: 20020808 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20020721 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT 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: 20021003 Ref country code: DK 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: 20021003 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2176042 Country of ref document: ES Kind code of ref document: T3 |
|
| 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: 20021207 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY 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: 20021231 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20021231 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D Ref document number: 1144144E Country of ref document: IE |
|
| 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 |
Effective date: 20030404 |
|
| BERE | Be: lapsed |
Owner name: *SMS DEMAG A.G. Effective date: 20021231 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030701 |
|
| 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: 20031231 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031231 |
|
| 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: SE Payment date: 20091214 Year of fee payment: 11 Ref country code: ES Payment date: 20091222 Year of fee payment: 11 Ref country code: AT Payment date: 20091217 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20091222 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20091222 Year of fee payment: 11 Ref country code: GB Payment date: 20091218 Year of fee payment: 11 Ref country code: FR Payment date: 20100108 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20091222 Year of fee payment: 11 |
|
| REG | Reference to a national code |
Ref country code: NL Ref legal event code: V1 Effective date: 20110701 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20101207 |
|
| 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: 20101207 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20110831 |
|
| REG | Reference to a national code |
Ref country code: SE Ref legal event code: EUG |
|
| 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: 20101208 |
|
| 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: 20110103 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101207 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110701 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59901981 Country of ref document: DE Effective date: 20110701 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101207 Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110701 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20131029 |
|
| 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: 20101208 |