EP1132161A1 - Process for continuous casting slabs, especially thin slabs - Google Patents
Process for continuous casting slabs, especially thin slabs Download PDFInfo
- Publication number
- EP1132161A1 EP1132161A1 EP01105743A EP01105743A EP1132161A1 EP 1132161 A1 EP1132161 A1 EP 1132161A1 EP 01105743 A EP01105743 A EP 01105743A EP 01105743 A EP01105743 A EP 01105743A EP 1132161 A1 EP1132161 A1 EP 1132161A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strand
- area
- iii
- soft reduction
- section
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000009749 continuous casting Methods 0.000 title claims description 7
- 238000005266 casting Methods 0.000 claims abstract description 24
- 238000007711 solidification Methods 0.000 claims description 15
- 230000008023 solidification Effects 0.000 claims description 15
- 230000001965 increasing effect Effects 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 10
- 238000005204 segregation Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010959 steel Substances 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
- B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
Definitions
- EP 0 834 364 describes a method and a device for high-speed continuous casting plants with a strand thickness reduction during the Solidification, the melt preferably being poured into an oscillating mold and the strand cross section linearly over a minimum length of the strand guide under the mold, the so-called casting rolls, is reduced with itself Subsequent further strand reduction via the remaining strand guidance, the "Soft Reduction", up to a maximum of just before the final solidification or top of the sump.
- the deformation density the reduction of the strand cross section so that the critical deformation the strand shell taking into account the high casting speed and Steel grade is not exceeded.
- the upper yoke one Strand guide segment with the rollers stored between the inlet and The outlet is set at an angle so that the mouth is smaller on the outlet side than on the inlet side is available.
- the strand in the area of residual solidification reduced in thickness including the already solidified edge areas leads to an unnecessarily increased load on roles and their Bearing without the internal structure quality in the edge area of the Stranges is affected.
- the invention is based on the object effective method to improve the internal strand structure in its reduction area the residual solidification while avoiding increased roller and bearing loads to indicate which mainly relates to the middle parts of the Acts and the already solidified, edge parts of the strand spares the compaction work.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Stranggießen von Brammen, und insbesondere von Dünnbrammen, in einer Stranggießanlage mit einer Strangführung, umfassend unterhalb einer Kokille im lichten Abstand einstellbare Strangführungssegmente, insbesondere mit Rollenpaaren, wobei zur Verminderung von Seigerungen und Kemporositäten der Gießstrang im Bereich seiner Resterstarrung durch Anstellung der Strangführungssegmente in der Dicke reduziert wird (Soft-Reduction).The invention relates to a process for the continuous casting of slabs, and in particular of thin slabs, in a continuous caster with one strand guide, extensively adjustable strand guide segments below a mold, especially with pairs of rollers, whereby to reduce segregation and core porosities of the casting strand in the area of its residual solidification is reduced by adjusting the strand guide segments in thickness (soft reduction).
Bei einem bekannten Verfahren (DE 41 38 740 A1) durchläuft der Strang eine Soft-Reduction-Strecke bei deren Eintritt er noch nicht durcherstarrt ist, an deren Ende er jedoch durcherstarrt sein soll, wofür u. a. die Gießgeschwindigkeit einen wesentlichen Betriebsparameter darstellt. Im Bereich der Enderstarrung wird dabei eine Dickenreduktion bspw. für Dünnbrammen zwischen 0,5 und 3 mm pro Meter Gießlänge durchgeführt. Dazu werden in der Soft-Reduction-Strecke die Rollenpaare einzelner Segmente über das Schrumpfverhalten des Stranges hinausgehend enger eingestellt, um im Bereich der Resterstarrung eine Verbesserung der Strang-Innenqualität zu erreichen. In a known method (DE 41 38 740 A1), the strand runs through a Soft reduction route, at the entry of which he is not yet rigid, at the other In the end, however, he is said to be completely frozen, for which u. a. the casting speed one represents essential operating parameters. In the area of final solidification a thickness reduction, for example, for thin slabs between 0.5 and 3 mm per meter Casting length performed. For this purpose, the pairs of rollers in the soft reduction line of individual segments going beyond the shrinkage behavior of the strand more closely adjusted to improve the residual solidification Achieve strand interior quality.
Die EP 0 834 364 beschreibt ein Verfahren und eine Vorrichtung für Hochgeschwindigkeits-Stranggießanlagen mit einer Strangdickenreduktion während der Erstarrung, wobei Schmelze vorzugsweise in eine oszillierende Kokille gegossen und der Strangquerschnitt linear über eine Mindestlänge der Strangführung unmittelbar unter der Kokille, dem sogenannten Gießwalzen, reduziert wird, mit sich anschließender weiterer Strang-Reduktion über die restliche Strangführung, der "Soft-Reduction", bis maximal unmittelbar vor der Enderstarrung bzw. Sumpfspitze. Durch diese verfahrenstechnischen Maßnahmen wird die Deformationsdichte der Strangquerschnittsreduktion so vorgegeben, dass die kritische Deformation der Strangschale unter Berücksichtigung der hohen Gießgeschwindigkeit und Stahlgüte nicht überschritten wird.EP 0 834 364 describes a method and a device for high-speed continuous casting plants with a strand thickness reduction during the Solidification, the melt preferably being poured into an oscillating mold and the strand cross section linearly over a minimum length of the strand guide under the mold, the so-called casting rolls, is reduced with itself Subsequent further strand reduction via the remaining strand guidance, the "Soft Reduction", up to a maximum of just before the final solidification or top of the sump. Through these procedural measures, the deformation density the reduction of the strand cross section so that the critical deformation the strand shell taking into account the high casting speed and Steel grade is not exceeded.
Die EP 0 177 796 B1 offenbart ein Verfahren zum Führen und Richten eines Gießstranges im Richt- und Auslaufbereich einer Bogenstranggießanlage, wobei gegenüberliegend angeordnete Rollen von einer Federkraft gegen den ferrostatischen Druck des Gießstranges in einem dem Gießverfahren entsprechenden Abstand gehalten werden. Dabei wird ein Gießstrangbereich erhöhter Festigkeit wegverfolgt und bei dessen Durchlauf zwischen gegenüberliegenden Rollen wird die jeweilige Federkraft durch eine geringere Zusatzkraft reduziert. Dieser Vorschlag, nämlich den lichten Abstand bzw. die Maulweite über Hydraulikzylinder mit eingebauter induktiver Wegemessung und Servoventilen stufenlos einzustellen, erfordert eine rechnerische oder messtechnische Ermittlung der Lage der Sumpfspitze.EP 0 177 796 B1 discloses a method for guiding and straightening a Casting strand in the straightening and outlet area of a continuous sheet caster, where oppositely arranged rollers by a spring force against the ferrostatic Pressure of the casting strand at a distance corresponding to the casting process being held. This creates a cast strand area of increased strength is traced and as it passes between opposing roles the respective spring force is reduced by a lower additional force. This suggestion namely the clear distance or the mouth width with hydraulic cylinders built-in inductive displacement measurement and servo valves continuously adjustable, requires a mathematical or metrological determination of the position of the swamp tip.
Die in Stranggießanlagen entsprechend den vorgenannten Dokumenten und den darin beschriebenen Verfahren und Anlagen hergestellten Brammen oder Blöcke dienen als Ausgangsmaterial für Walzwerksprodukte zum Erzeugen von Blechen oder Bändern. The in continuous casting plants according to the aforementioned documents and the processes and plants described therein manufactured slabs or blocks serve as the starting material for rolling mill products for the production of sheet metal or ribbons.
Um beim Stranggießen, insbesondere von Dünnbrammen, Seigerungen im Strang zu verringern und ein vergleichsweises optimales Gefüge zu erzielen, wird in der Strangführungs-Strecke der Anlage im Bereich der Enderstarrung zwecks Dickenreduktion, z. B. zwischen 0,5 und 3 mm pro Meter Strang, das Oberjoch eines Strangführungssegmentes mit den darin gelagerten Rollen zwischen Einlauf und Auslauf schräg angestellt, so dass auslaufseitig eine kleinere Maulweite als einlaufseitig vorhanden ist. Dabei wird vielfach der Strang im Bereich der Resterstarrung in der Dicke einschließlich der bereits durcherstarrten Kantenbereiche reduziert. Dies führt jedoch zu einer unnötig erhöhten Belastung von Rollen und ihren Lagerungen, ohne dass hierbei die Gefüge-Innenqualität im Kantenbereich des Stranges beeinflusst wird.In order to ensure continuous casting, especially of thin slabs, segregations in the strand to reduce and achieve a comparatively optimal structure is in the Strand guide section of the plant in the area of final solidification for the purpose of thickness reduction, e.g. B. between 0.5 and 3 mm per meter strand, the upper yoke one Strand guide segment with the rollers stored between the inlet and The outlet is set at an angle so that the mouth is smaller on the outlet side than on the inlet side is available. Often the strand in the area of residual solidification reduced in thickness including the already solidified edge areas. However, this leads to an unnecessarily increased load on roles and their Bearing without the internal structure quality in the edge area of the Stranges is affected.
Ausgehend von diesen Zusammenhängen und den sich daraus ergebenden Erkenntnissen beim Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein effektives Verfahren zur Verbesserung des Strang-Innengefüges in dessen Reduktionsbereich der Resterstarrung unter Vermeidung erhöhter Rollen- und Lagerbelastung anzugeben, welches hauptsächlich auf die mittleren Partien des Stranges einwirkt und die bereits durcherstarrten, Randpartien des Stranges bei der Verdichtungsarbeit ausspart.Based on these connections and the resulting knowledge in the prior art, the invention is based on the object effective method to improve the internal strand structure in its reduction area the residual solidification while avoiding increased roller and bearing loads to indicate which mainly relates to the middle parts of the Acts and the already solidified, edge parts of the strand spares the compaction work.
Zur Lösung der Aufgabe wird mit der Erfindung bei einem Verfahren der im Oberbegriff
von Anspruch 1 genannten Art vorgeschlagen, dass der Gießstrang vor
dem Bereich der Soft-Reduction-Strecke durch entsprechende Maulweiten-Einstellung
der Segmente infolge des ferrostatischen Innendrucks mit einer gezielten
Ausbauchung versehen wird, und dass die Ausbauchung in der Segmentführung
der Soft-Reduction-Strecke ganz oder teilweise auf die Strangdicke zurückgedrückt
wird, in der die Resterstarrung stattfindet.To solve the problem with the invention in a method in the preamble
of
Damit wird im Vergleich zum Stand der Technik und den bisherigen Verfahrenskonzepten bei gleicher Dickenreduzierung und Kernverdichtung eine geringere Krafteinwirkung erforderlich, und die Rollen- bzw. Lagerbelastung verringert, was der gesamten Stützkonstruktion der Strangführung zugute kommt und darüber hinaus die Strangqualität infolge verminderter Seigerungen und Kernporositäten signifikant verbessert bzw. bei unveränderter Krafteinwirkung eine größere Dikkenreduzierung und Kernverdichtung ergibt.This is compared to the state of the art and the previous process concepts a lower one with the same thickness reduction and core compression Force is required, and the roller or bearing load reduces what the entire support structure of the strand guide benefits and above the strand quality as a result of reduced segregation and core porosity significantly improved or, with unchanged force, a greater reduction in thickness and core compression results.
Eine Ausgestaltung des Verfahrens sieht vor, daß der Gießstrang vor dem Bereich der Soft-Reduction-Strecke bei veränderlich einstellbarer Maulweite der Segmente in wenigstens einem Segment zuerst in einen Streckenbereich sich verringernder Maulweite im kernflüssigen Bereich reduziert wird ("Liquid-Core-Reduction") und anschließend einen Streckenbereich sich vergrößernder Maulweite durchläuft, und danach in weiteren Segmenten in eine bis zur Sumpfspitze reichende Soft-Reduction-Strecke einmündet.An embodiment of the method provides that the casting strand in front of the area the soft reduction section with variably adjustable jaw width of the segments in at least one segment first decreasing into a route area Mouth width in the core liquid area is reduced ("liquid core reduction") and then traverses a section of an enlarged mouth, and then in further segments in a soft reduction stretch that reaches to the top of the swamp flows into.
Weitere Ausgestaltungen des Verfahrens sind entsprechend den Unteransprüchen vorgesehen.Further refinements of the method are in accordance with the subclaims intended.
Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus der nachstehenden Erläuterung eines in den Zeichnungen schematisch dargestellten Ausführungsbeispiels. Es zeigen:
Figur 1- in rein schematischer Darstellung einen Anfangsbereich einer Strangführung unterhalb einer Kokille nach dem Stand der Technik lediglich mit einer Soft-Reduction-Strecke;
- Figur 2
- ein Stück einer Strangführung unterhalb einer Kokille mit sowohl einer Liquid-Core-Reduction-Strecke und einen anschließenden Bereich mit einer Soft-Reduction-Strecke;
Figur 3- Querschnittskontur des Gießstranges
- Figure 1
- in a purely schematic representation, an initial region of a strand guide below a mold according to the prior art only with a soft reduction path;
- Figure 2
- a piece of a strand guide below a mold with both a liquid core reduction section and a subsequent area with a soft reduction section;
- Figure 3
- Cross-sectional contour of the casting strand
In der Figur 1 befindet sich unterhalb der Kokille 1 ein Stück einer Strangführung
mit den Segmenten 2.1, 2.2 und 2.3. Das Segment 2.2 ist unterteilt in die Segmentbereiche
2.2a und 2.2b. Alle Segmente weisen Führungsrollen 3, 3' auf und
sind im lichten Abstand zueinander einstellbar.In FIG. 1 there is a piece of a strand guide below the
Zur Vermeidung von Seigerungen im Strang 4 bei dessen Erstarrung sowie zur
Erzielung eines dichten Gefüges wird bei diesem in einer Soft-Reduction-Strecke
III der Strangführung 20 im Bereich der Enderstarrung eine Dickenreduzierung mit
einer Marge zwischen 0,5 und 3 mm pro Meter durchgeführt.To avoid segregation in strand 4 during its solidification and
A dense structure is achieved in this in a soft reduction range
III of the
Im Stammbaum des Gießstranges 4 der Figur 1 ist dargestellt, daß der Gießstrang
vor dem Bereich der Soft-Reduction-Strecke III durch entsprechende Maulweiten-Einstellung
der Rollen 3, 3' nach vor dem Bereich der Soft-Reduction-Strecke III
gezielt eine Ausbauchung 5 erhält, wonach die Ausbauchung 5 in der konisch angestellten
Rollenführung der Soft-Reduction-Strecke III auf diejenige Strangdicke
reduziert wird, in der die Resterstarrung stattfindet.In the family tree of the casting strand 4 of Figure 1 it is shown that the casting strand
in front of the area of the soft reduction section III by adjusting the mouth width accordingly
the
Damit wird ein effektives Verfahren zur Reduzierung von Seigerungen und zur Verdichtung des Strang-Innengefüges in dessen Reduktionsbereich der Resterstarrung unter Vermeidung erhöhter Rollen- und Lagerbelastung angegeben, welches hauptsächlich auf die noch nicht vollständig durcherstarrten, insbesondere mittleren Partien des Stranges einwirkt und das die bereits durcherstarrten Randpartien bei der Verdichtungsarbeit ausspart.This is an effective method for reducing segregation and Compression of the inner strand structure in its reduction area of residual solidification while avoiding increased roller and bearing loads mainly on those that have not yet completely hardened, especially middle parts of the strand and this affects the already solidified edge parts in the compaction work.
In Fig. 2 ist eine Ausgestaltung des Verfahrens nach der Erfindung dargestellt,
wonach der Gießstrang 4 vor dem Bereich der Soft-Reduction-Strecke bei veränderlich
einstellbarer Maulweite (W) der Rollen 3, 3' zuerst eine parallele Strecke 1
unterhalb der Kokille 1 in wenigstens einem ersten Segment 2.1 durchläuft. In einem
folgenden Segment 2.2 wird zuerst in einem Streckenbereich 2a sich verringernder
Maulweite (-W) eine "Liquid-Core-Reduction" durchgeführt, anschließend
durchläuft der Gießstrang einen Streckenbereich IIb sich vergrößernder Maulweite
(+W). Danach mündet der Gießstrang 4 in weiteren Segmenten 2.3 bis 2.4 bzw.
2.5 (nicht gezeigt) in eine bis zur Sumpfspitze reichende Soft-Reduction-Strecke III
ein. Der Bereich vergrößerter Maulweite +W der Strecke IIb der Figur 2 ist zwischen
den Bereichen von Liquid-Core-Reduction (lla) und Soft-Reduction III angeordnet.2 shows an embodiment of the method according to the invention,
after which the casting strand 4 in front of the area of the soft reduction section is variable
adjustable mouth width (W) of the
Eine Ausgestaltung des Verfahren nach der Erfindung sieht vor, dass die Maulweite W vor dem Bereich der Soft-Reduction III linear vergrößert wird. Es kann aber auch von der Maßnahme Gebrauch gemacht sein, dass die Maulweite W vor dem Bereich III der Soft-Reduction nicht-linear vergrößert wird.An embodiment of the method according to the invention provides that the mouth width W is linearly enlarged before the area of Soft Reduction III. It can but also be made use of the measure that the mouth width W before area III of the soft reduction is increased non-linearly.
Von Vorteil ist, dass bei der Herstellung von Dünnbrammen zur Vermeidung einer kritischen Deformation der Strangschale die Vergrößerung der Maulweite W zwischen 1 und 8 mm eingestellt wird.The advantage is that in the manufacture of thin slabs to avoid a critical deformation of the strand shell the increase in the internal width W between 1 and 8 mm is set.
Dagegen kann bei der Herstellung üblicher Brammen mit Brammendicken von bspw. 250 mm und mehr eine Vergrößerung der Maulweite (+W) zwischen 3 und 20 mm eingestellt werden.In contrast, in the production of conventional slabs with slab thicknesses of For example, 250 mm and more an increase in the mouth width (+ W) between 3 and 20 mm can be set.
In Fig. 3 ist der Gießstrang im Querschnitt dargestellt. Die beidseitige Ausbauchung
5 entsteht durch eine vergrößerte Maulweiteneinstellung vor dem Bereich
der Soft-Reduction-Strecke III. Diese Ausbauchung 5 wird im Bereich der Soft-Reduction-Strecke
III ganz oder teilweise zurückgedrückt. Die durchgezogene Linie
zeigt die Querschnittskontur des ausgebauchten Stranges. Die gestrichelte
Linie 5' zeigt die Kontur des Stranges nach dem Verlassen der Soft-Reduction-Strecke.In Fig. 3, the casting strand is shown in cross section. The bulge on both
Claims (11)
dadurch gekennzeichnet, dass der Gießstrang (4) vor dem Bereich der Soft-Reduction-Strecke (III) durch entsprechende Maulweiten-Einstellung (W) der Segmente (2.1 bis 2.n) infolge des ferrostatischen Innendrucks mit einer gezielten Ausbauchung (5) versehen wird, und dass die Ausbauchung (5) in der Segmentführung der Soft-Reduction-Strecke ganz oder teilweise auf die Strangdicke zurückgedrückt wird, in der die Resterstarrung stattfindet.Process for the continuous casting of slabs, in particular thin slabs, in a continuous casting installation with a strand guide (20), comprising strand guide segments (2.1 - 2.n) which can be adjusted at a short distance below a mold (1), in particular with pairs of rollers (3, 3 '), wherein to reduce segregation and core porosity, the casting strand (4) is reduced in thickness in the area of its residual solidification by adjusting the strand guide segments (soft reduction),
characterized in that the casting strand (4) in front of the area of the soft reduction section (III) is provided with a specific bulge (5) by appropriate adjustment of the mouth width (W) of the segments (2.1 to 2.n) as a result of the ferrostatic internal pressure and that the bulge (5) in the segment guide of the soft reduction section is pressed back in whole or in part to the strand thickness in which the residual solidification takes place.
dadurch gekennzeichnet, daß die Maulweite (W) mindestens eines Segments (2.1 bis 2.n) vor der Soft-Reduction-Strecke (III) auf ein Maß größer als die Austrittsdicke der Kokille (1) eingestellt wird. Method according to claim 1,
characterized in that the mouth width (W) of at least one segment (2.1 to 2.n) in front of the soft reduction section (III) is set to a dimension greater than the exit thickness of the mold (1).
dadurch gekennzeichnet, dass der Gießstrang (4) vor dem Bereich der Soft-Reduction-Strecke (III) bei veränderlich einstellbarer Maulweite (W) der Segmente (2.1 bis 2.n) in wenigstens einem Segment (2.2) zuerst in einem Streckenbereich (IIa) mit sich verringernder Maulweite (-W) im kernflüssigen Bereich reduziert wird ("Liquid-Core-Reduction") und anschließend einen Streckenbereich (IIb) sich vergrößernder Maulweite (+W) durchläuft, und danach in weiteren Segmenten (2.3 bis 2.n) in eine bis zur Sumpfspitze reichende Soft-Reduction-Strecke (III) einmündet.The method of claim 1 or 2,
characterized in that the casting strand (4) in front of the area of the soft reduction section (III) with a variably adjustable mouth width (W) of the segments (2.1 to 2.n) in at least one segment (2.2) first in a section area (IIa ) is reduced with a decreasing mouth width (-W) in the core liquid area ("liquid core reduction") and then runs through a section area (IIb) with an increasing mouth width (+ W), and then in further segments (2.3 to 2.n ) opens into a soft reduction section (III) reaching to the top of the swamp.
dadurch gekennzeichnet, daß die Maulweite (W) wenigstens eines Segments (2.1 bis 2.n) vor der Soft-Reduction-Strecke (III) auf ein größeres Maß eingestellt wird als die Strangdicke nach der Liquid Core Reduction Strecke.Method according to claim 3,
characterized in that the mouth width (W) of at least one segment (2.1 to 2.n) before the soft reduction section (III) is set to a greater extent than the strand thickness after the liquid core reduction section.
dadurch gekennzeichnet, daß die Maulweiteneinstellung der Segmente (2.1 bis 2.n) parallel oder konisch zu dem Gießstrang erfolgt.Method according to at least one of claims 1 to 4,
characterized in that the mouth width adjustment of the segments (2.1 to 2.n) takes place parallel or conical to the casting strand.
dadurch gekennzeichnet, dass die Maulweite (W) vor dem Bereich der Soft-Reduction (III) linear vergrößert wird.Method according to at least one of the preceding claims 1 to 5,
characterized in that the mouth width (W) is increased linearly before the area of soft reduction (III).
dadurch gekennzeichnet, dass die Maulweite (W) vor dem Bereich (III) der Soft-Reduction nicht-linear vergrößert wird.Method according to at least one of the preceding claims 1 to 6,
characterized in that the mouth width (W) before the area (III) of the soft reduction is increased non-linearly.
dadurch gekennzeichnet, dass bei der Herstellung von Dünnbrammen die Vergrößerung der Maulweite (+W) zwischen 1 und 8 mm eingestellt wird.Method according to at least one of the preceding claims 1 to 7,
characterized in that the width of the mouth (+ W) is set between 1 and 8 mm in the manufacture of thin slabs.
dadurch gekennzeichnet, dass bei der Herstellung von Brammen eine Vergrößerung der Maulweite (+W) zwischen 3 und 20 mm eingestellt wird.Method according to at least one of the preceding claims 1 to 8,
characterized in that an increase in the mouth width (+ W) between 3 and 20 mm is set in the manufacture of slabs.
dadurch gekennzeichnet, dass der Bereich vergrößerter Maulweite (+W) zwischen den Bereichen von Liquid-Core-Reduction (lla) und Soft-Reduction (III) angeordnet wird.Method according to at least one of the preceding claims 1 to 9,
characterized in that the area of increased mouth width (+ W) is arranged between the areas of liquid core reduction (Ila) and soft reduction (III).
dadurch gekennzeichnet, daß der Gießstrang (4) zuerst eine parallele Strecke (I) unterhalb der Kokille (1) in wenigstens einem ersten Segment (2.1) durchläuft und sich der Streckenbereich (II a) der Liquid-Core-Reduction und der Streckenbereich (III) der Soft-Reduction anschließen.Method according to at least one of the preceding claims 1 to 10,
characterized in that the casting strand (4) first runs through a parallel section (I) below the mold (1) in at least a first segment (2.1) and the section area (II a) of the liquid core reduction and the section area (III ) of the soft reduction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10011689A DE10011689A1 (en) | 2000-03-10 | 2000-03-10 | Process for the continuous casting of slabs and in particular thin slabs |
| DE10011689 | 2000-03-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1132161A1 true EP1132161A1 (en) | 2001-09-12 |
| EP1132161B1 EP1132161B1 (en) | 2005-05-04 |
Family
ID=7634219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01105743A Expired - Lifetime EP1132161B1 (en) | 2000-03-10 | 2001-03-08 | Process for continuous casting slabs, especially thin slabs |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6612364B2 (en) |
| EP (1) | EP1132161B1 (en) |
| JP (1) | JP2001269757A (en) |
| AT (1) | ATE294654T1 (en) |
| CA (1) | CA2340510C (en) |
| DE (2) | DE10011689A1 (en) |
| ES (1) | ES2240262T3 (en) |
| MX (1) | MXPA01002501A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110523942A (en) * | 2019-08-29 | 2019-12-03 | 邢台钢铁有限责任公司 | A kind of control method improving high-carbon-chromium bearing steel bloom internal flaw |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10057160A1 (en) * | 2000-11-16 | 2002-05-29 | Sms Demag Ag | Method and device for producing thin slabs |
| DE10122118A1 (en) * | 2001-05-07 | 2002-11-14 | Sms Demag Ag | Method and device for the continuous casting of blocks, slabs and thin slabs |
| DE102005028711A1 (en) * | 2005-06-20 | 2006-12-28 | Siemens Ag | Process to regulate by algorithm the operation of an adjustable roller segment receiving extruded metal and determine output dimensions |
| DE102005028703A1 (en) * | 2005-06-20 | 2006-12-28 | Siemens Ag | Regulating and or controlling method e.g. for adjusting segment in continuous casting installation, involves having lower frame and upper frame positioned in relation to each other by adjusting elements |
| DE102007016575A1 (en) | 2007-04-07 | 2008-10-09 | Sms Demag Ag | A strand guide device |
| JP5476959B2 (en) * | 2009-12-08 | 2014-04-23 | Ｊｆｅスチール株式会社 | Continuous casting method under light pressure |
| JP5929836B2 (en) * | 2013-05-30 | 2016-06-08 | Ｊｆｅスチール株式会社 | Steel continuous casting method |
| CN107081412B (en) * | 2017-04-01 | 2019-08-09 | 唐山钢铁集团有限责任公司 | The preparation method of high-quality plastic die steel special heavy plate continuous casting mother's base |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4519439A (en) * | 1977-07-26 | 1985-05-28 | Jernjontoret | Method of preventing formation of segregations during continuous casting |
| DE4138740A1 (en) * | 1991-11-26 | 1993-05-27 | Schloemann Siemag Ag | METHOD AND DEVICE FOR CONTINUOUSLY casting slabs or blocks |
| DE4436328A1 (en) * | 1993-10-14 | 1995-04-20 | Voest Alpine Ind Anlagen | Method and installation for continuous casting |
| DE4338805A1 (en) * | 1993-11-12 | 1995-05-18 | Schloemann Siemag Ag | Method and appts. for operating a strip casting plant |
| EP0834364A2 (en) * | 1996-09-25 | 1998-04-08 | Sms Schloemann-Siemag Aktiengesellschaft | Method and device for high-speed continuous casting plants with reduction of the width during solidification |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3437178A1 (en) | 1984-10-10 | 1986-04-10 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | METHOD AND DEVICE FOR GUIDING AND Straightening a Casting Line in the Straightening and Discharge Area of an Arch Continuous Casting System |
| US6102101A (en) * | 1995-10-18 | 2000-08-15 | Sumitomo Metal Industries, Ltd. | Continuous casting method and apparatus thereof |
-
2000
- 2000-03-10 DE DE10011689A patent/DE10011689A1/en not_active Withdrawn
-
2001
- 2001-03-07 JP JP2001063652A patent/JP2001269757A/en active Pending
- 2001-03-08 AT AT01105743T patent/ATE294654T1/en active
- 2001-03-08 ES ES01105743T patent/ES2240262T3/en not_active Expired - Lifetime
- 2001-03-08 EP EP01105743A patent/EP1132161B1/en not_active Expired - Lifetime
- 2001-03-08 DE DE50106063T patent/DE50106063D1/en not_active Expired - Lifetime
- 2001-03-09 CA CA002340510A patent/CA2340510C/en not_active Expired - Fee Related
- 2001-03-09 MX MXPA01002501A patent/MXPA01002501A/en active IP Right Grant
- 2001-03-09 US US09/804,414 patent/US6612364B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4519439A (en) * | 1977-07-26 | 1985-05-28 | Jernjontoret | Method of preventing formation of segregations during continuous casting |
| DE4138740A1 (en) * | 1991-11-26 | 1993-05-27 | Schloemann Siemag Ag | METHOD AND DEVICE FOR CONTINUOUSLY casting slabs or blocks |
| DE4436328A1 (en) * | 1993-10-14 | 1995-04-20 | Voest Alpine Ind Anlagen | Method and installation for continuous casting |
| DE4338805A1 (en) * | 1993-11-12 | 1995-05-18 | Schloemann Siemag Ag | Method and appts. for operating a strip casting plant |
| EP0834364A2 (en) * | 1996-09-25 | 1998-04-08 | Sms Schloemann-Siemag Aktiengesellschaft | Method and device for high-speed continuous casting plants with reduction of the width during solidification |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110523942A (en) * | 2019-08-29 | 2019-12-03 | 邢台钢铁有限责任公司 | A kind of control method improving high-carbon-chromium bearing steel bloom internal flaw |
| CN110523942B (en) * | 2019-08-29 | 2021-11-23 | 邢台钢铁有限责任公司 | Control method for improving internal defects of high-carbon chromium bearing steel bloom |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2340510C (en) | 2009-06-02 |
| ES2240262T3 (en) | 2005-10-16 |
| ATE294654T1 (en) | 2005-05-15 |
| EP1132161B1 (en) | 2005-05-04 |
| DE50106063D1 (en) | 2005-06-09 |
| MXPA01002501A (en) | 2003-08-20 |
| DE10011689A1 (en) | 2001-09-13 |
| US6612364B2 (en) | 2003-09-02 |
| US20010020528A1 (en) | 2001-09-13 |
| CA2340510A1 (en) | 2001-09-10 |
| JP2001269757A (en) | 2001-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3627991C2 (en) | ||
| EP0545104A2 (en) | Method and apparatus for continuous casting of ingots or blooms | |
| EP1043095B1 (en) | Device for adjusting the slab profile of a continuous cast slab, particularly of a thin slab | |
| WO2009141207A1 (en) | Method and continuous casting plant for producing thick slabs | |
| DE19860570C1 (en) | Process for the production of round billets | |
| EP1313579B1 (en) | Continuous casting installation comprising a soft reduction section | |
| EP1960136A1 (en) | Method for the continuous casting of thin metal strip and continuous casting installation | |
| EP1132161B1 (en) | Process for continuous casting slabs, especially thin slabs | |
| DE2444443A1 (en) | METHOD OF CONTINUOUS CASTING OF A MELT STEEL | |
| AT408420B (en) | PLANT FOR PRODUCING HOT-ROLLED STEEL STRIP | |
| DE19840898C2 (en) | Process for producing load-optimized steel strips | |
| EP3016762B1 (en) | Cast-rolling installation and method for producing metallic rolled stock | |
| EP1385656B1 (en) | Method for continuously casting ingots, slabs or thin slabs | |
| DE102021207301A1 (en) | Strand guide device and method for continuous casting of a metallic product in a continuous casting installation with such a strand guide device | |
| DE4234135C2 (en) | Method and device for horizontal continuous casting | |
| EP1827735B1 (en) | Method and device for continuous casting of metals | |
| EP1381482B1 (en) | Method and device for the production of continuous casting input stock | |
| EP1441871B1 (en) | Method and casting machine for production of casting bars in the shape of billets or blocks | |
| WO2018082943A1 (en) | Method and system for producing a metal strip | |
| DE3112947A1 (en) | "METHOD AND PLANT FOR CONTINUOUS CASTING" | |
| EP0941787A1 (en) | Supporting element for continuous casting plant | |
| EP0946318A1 (en) | Method and device for continuous thin slab steel casting | |
| EP1243362A2 (en) | Process and device for manufacturing hot strip in a twin roll continuous casting machine | |
| DE102017219464A1 (en) | Continuous casting plant with single roll adjustment | |
| EP1381483A2 (en) | Increase in format thickness for thin slab continuous casting systems |
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: 20010321 |
|
| 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 TR |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| AKX | Designation fees paid |
Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| 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 TR |
|
| 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: 20050504 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: 20050504 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| 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: LANGUAGE OF EP DOCUMENT: GERMAN |
|
| REF | Corresponds to: |
Ref document number: 50106063 Country of ref document: DE Date of ref document: 20050609 Kind code of ref document: P |
|
| 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: 20050804 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: 20050804 Ref country code: SE 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: 20050804 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20050907 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2240262 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: 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: 20051017 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
| ET | Fr: translation filed | ||
| 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 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060331 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060331 Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060331 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060331 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060331 |
|
| 26N | No opposition filed |
Effective date: 20060207 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| BERE | Be: lapsed |
Owner name: SMS DEMAG AG Effective date: 20060331 |
|
| 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: 20050504 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20100324 Year of fee payment: 10 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20100402 Year of fee payment: 10 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: TR Payment date: 20100223 Year of fee payment: 10 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20100315 Year of fee payment: 10 |
|
| REG | Reference to a national code |
Ref country code: NL Ref legal event code: V1 Effective date: 20111001 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20111130 |
|
| 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: 20110331 Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20111001 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20120510 |
|
| 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: 20110309 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20120328 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20130321 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20130313 Year of fee payment: 13 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110308 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20140331 Year of fee payment: 14 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50106063 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 294654 Country of ref document: AT Kind code of ref document: T Effective date: 20140308 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20140308 |
|
| 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: 20140308 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50106063 Country of ref document: DE Effective date: 20141001 |
|
| 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: 20140308 |
|
| 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: 20140308 |
|
| 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: 20141001 |