EP0498296B2 - Mould for continuous casting of metals, especially of steel - Google Patents
Mould for continuous casting of metals, especially of steel Download PDFInfo
- Publication number
- EP0498296B2 EP0498296B2 EP92101506A EP92101506A EP0498296B2 EP 0498296 B2 EP0498296 B2 EP 0498296B2 EP 92101506 A EP92101506 A EP 92101506A EP 92101506 A EP92101506 A EP 92101506A EP 0498296 B2 EP0498296 B2 EP 0498296B2
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- EP
- European Patent Office
- Prior art keywords
- mould
- cross
- mould cavity
- section
- strand
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- 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.)
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- 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
-
- 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting
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- 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
Definitions
- the invention relates to a mold for the continuous casting of metals, preferably of steel, according to the preamble of claim 1 or claim 2nd
- a mold for the continuous casting of is known from US Pat. No. 4,207,941 Steel strands with polygonal, especially with square Cross sections, known.
- the cross section of the open on both sides The mold cavity is a square with corner fillets on the pouring side and an irregular one on the strand exit side Twelve corner. In the corner areas, the corner fillet becomes The pouring cone is continuously enlarged in the direction of the strand, and it is in the area of the fillet over a partial length of the mold twice as large as in the central area of the mold wall. At the Pouring with such molds can jam the strand occur within the mold leading to strand breaks and Lead breakthroughs. Also, instead of a square Cast a dodecagon. In particular, it is difficult to use such molds for different casting speeds during one dimensioning the current casting, as in long sequence castings with many pan changes are inevitable.
- DE-A-3 907 351 discloses a mold with a pouring funnel for a Thin slab described.
- the two broad sides are on the Pouring side of the mold with bulges that run along a partial height of the mold are continuously reshaped.
- On the The strand exit side of the mold is the cross section of the mold cavity rectangular and to the desired thin slab cross section aligned.
- the sole purpose of the two opposite Bulges is the space required to create for a dip tube. Are on the two narrow sides no bulges and no deformation of the strand shell provided by the mold walls.
- the narrow sides of these Thin slab mold run, in contrast to the two broad sides, the narrow side walls diverging in the direction of the strand.
- These narrow sides diverging in the direction of the strand are for Solving the task set there, particularly thin strands using one to under the Pouring pouring pipe reaching the pouring level, necessary to bruises and Prevent wrinkles on the broad sides.
- the invention has for its object the disadvantages mentioned to overcome.
- deforming the strand cross section within the mold one that can be measured over the entire circumference Cooling of the strand crust can be achieved on the one hand to improve the strand quality and on the other hand the casting speed to increase.
- there should also be differences in casting speed during a running cast without the above Disadvantages such as strand break and breakthrough are made possible.
- each mold represents curved lines, compared to classic tubular molds a higher dimensional stability of the mold tube, in particular in the highly heat-exposed bathroom mirror area. This higher dimensional stability improves with tube and other molds on the one hand, the dimensional accuracy of the mold cavity during the Tool life and on the other hand the strand quality.
- the bulge is usually along the pouring side of the mold cavity over a partial length or over the entire length the mold diminished.
- At the mold exit for example there is still a curved line in each circumferential section.
- Cross section of the mold cavity on the mold exit side is additionally proposed to be provided in a straight line on all sides between corners.
- the mold can also be round or a preliminary profile, e.g. the Form of a double-T beam.
- the difference between the arc length at the level of the bath level and at the mold exit or tendon length determined at the mold exit and with the shrinkage of the Strand crust compared to the strand running direction compared.
- the said Difference can be due to the size of the bulge or the arch height be chosen so that they essentially with the shrinkage mentioned is in agreement.
- According to an embodiment can measure the light between opposite circumferential sections of the mold cavity on the pouring side, in the area measured at the largest bulge, about 5-15%, preferably at least 5% or 8%, greater than the light dimension between opposite ones Circumferential sections on the strand exit side to get voted.
- the measure of the arc height can be degressive or in the pouring direction possibly shorten progressively and head towards zero.
- the measure of the arc height can be in Advantageously, continuously decrease the cross-section of the following cross-sections.
- the change in the bow height in the direction of the strand can according to a further embodiment also as a degree of taper be determined.
- the shape and the size of the bulge are in all sections the same. Change the conicity of the bulge along the circumferential section in size.
- An embodiment can at the two ends of each peripheral section a taper between 0 and 1% / m and in the middle the circumferential section is provided between 10 and 35% / m become.
- Another variation is the choice of length or Partial length of the mold cavity with bulges. It is fundamental possible that the arc height of the bulge over the total mold cavity length reduced. But they are also only partial lengths conceivable. An advantageous embodiment sees one Partial length of at least 50% of the mold length. With today The usual molds of 800 mm in length are at least part of the length 400 mm.
- the Diagonal measured taper on the partial length with bulges in an order of magnitude between 0 - 1% / m, or between 0 - 0.5% / m to be provided.
- polygonal Strand cross-sections rounded the corners of the mold cavity. It has proven to be particularly advantageous when the corners of the Mold cavity fillet with a radius of 3 - 8% of the side length of the cross section.
- peripheral sections with bulges can be of circular lines, Curves or be bounded by compound straight lines.
- FIG. 1 and 2 is a mold 3 for the continuous casting of polygonal Strand cross sections, in the present example of square ones Strand cross sections, shown.
- An arrow 4 points to one Pouring side and an arrow 5 on a strand exit side the mold 3.
- the cross sections of a mold cavity 6 have different geometrical geometries on the entry and exit side Forms on.
- the cross section is of the mold cavity 6 on the pouring side 4 between the Corners 8 - 8 '' 'with cross-sectional enlargements compared to the Strand exit side provided in the form of bulges 9.
- An arc height 10 which represents the extent of the bulge, takes in the strand running direction 11 on a partial length 12 of the mold cavity 6 steadily.
- the mold cavity cross sections in the levels 14 and 15 delimit a mold part 13 with a square cross section with fillets 16, as known in the art.
- a circumferential line 17 shows the mold cavity cross section in FIG Level 14 and a circumferential line 18 the mold cavity cross section in the level 15.
- the cross section of the mold cavity 6 is on the Mold exit side on all sides between the corners 8 straight.
- With an arrow 2 is a peripheral portion of the circumferential line of the Mold cavity 6 denotes.
- There are 4 circumferential sections in this mold provided with similar cross-sectional enlargements 7. Instead of the square basic shape of the mold cavity 6 could also have a hexagonal, rectangular etc. cross section as Serve basic form.
- a dimension of light 20 between opposite sides of the mold cavity 6 on the pouring side 4 in the area of the largest bulge is compared to a light dimension 21 between the opposite Pages on strand exit page 5 are 5 - 15% larger.
- the luminance 20 can also be at least 5% or at least 8% larger than the light dimension 22 in level 14 be 12 at the end of the partial length.
- the arch height 10 of the bulge 9 decreases continuously in the direction of the strand 11 with the following cross sections.
- the partial length 12 is 400 mm or about 50% of the in this example Mold length that measures about 800 mm.
- height curves 30-33 show a corner of a bulged Mold cavity 35.
- the height curve 30 represents the top edge of the mold cavity 35 of the mold 34.
- With 36 is the wall thickness of a mold tube indicated.
- 33 shows the height curve at the mold exit. Between the curves 30 and 33, the taper can be read out at two intermediate levels.
- Curves 31 and 32 show the decreasing arc heights of the bulges that occur during of casting cause deformation of the strand crust.
- the taper of the mold cavity 35 In the area of the fillet 38 there is the taper of the mold cavity 35 along a diagonal cut along the line 39 0-1% / m, preferably 0.1-0.5% / m. A deformation along the strand crust Line 39 is usually not provided.
- FIG. 4 shows similar height curves 40-43 as in FIG. 3.
- the main difference lies in the design of the Fillet 48 along the diagonal line 49.
- the fillet 48 has a negative cone in the direction of the strand. In the corner area a cavity expansion is thus provided in the direction of the strand.
- the selected bow height Bulge that needs to be reshaped may be of interest be a negative cone at corners 48 along the diagonal line 49 to provide for any jamming of the strand in to switch off the mold.
- the corner area can additionally cooling in the edge area of the Stranges are controlled.
- a negative cone along the diagonal line 49 may also be desirable for tendon extensions to recover from bulging bulges that cannot be compensated for by the shrinkage.
- Fig. 5 the bulges are straight by compound Lines limited. Elevation curves 50 - 53 represent a steady decline of the bulges. So in the middle of the bulged sides there is no abutting edge, a rounding 54 is provided. The straight lines run tangentially to a fillet 58. In This example is along the fillet 58 in the direction of the strand no taper provided. In a cut along the Diagonal 59, the fillet 58 runs essentially parallel to the longitudinal central axis of the mold.
- FIGS. 6 and 7 show molds whose mold cavities 60 or 70 are limited by curved and circular surfaces.
- Circumferential lines 61, 71 of the mold cavity cross section are in three Circumferential sections 62, 72 divided.
- the number of circumferential sections 62, 72 can be chosen freely, essentially round molds, as shown in the figures, usually in 3 - 6 peripheral sections 62, 72 are divided.
- Any perimeter section 62, 72 on the pouring side points opposite the strand exit side a cross-sectional enlargement in the form of a Bulge 63, 73 on. In these examples are the cross-sectional enlargements due to bulges limited by arches shown.
- each peripheral section 62, 72 the taper is zero to 1% / m and in the middle 67, 77 of the peripheral sections is usually a taper between 10 - 35% / m provided.
- the strand in two partial lengths that are directly adjacent to each other follow or has an intermediate zone between the partial lengths, to deform.
- the peripheral sections the successive partial lengths offset from each other, preferably offset by half a circumferential section become.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
Die Erfindung betrifft eine Kokille zum Stranggiess von Metallen, vorzugsweise von Stahl, gemäss Oberbegriff von Anspruch 1 oder Anspruch 2.The invention relates to a mold for the continuous casting of metals, preferably of steel, according to the preamble of claim 1 or claim 2nd
Seit den Anfängen des Stranggiessens mit Durchlaufkokillen hat sich die Fachwelt mit dem Problem der Bildung von Luftspalten zwischen Strangkruste und Kokillenwand unterhalb des Badspiegels befasst. Diese Spaltbildung vermindert den Wärmeübergang zwischen Kokille und Strangkruste ganz wesentlich und verursacht eine ungleichmässige Kühlung der Strangkruste, die zu Strangfehlern, wie Rhomboidität, Risse, Gefügefehler etc., führt. Um über die ganze Kokillenlänge einen möglichst allseitig guten Kontakt der Strangkruste zur Kokillenwand und damit die bestmöglichen Bedingungen für die Wärmeabfuhr zu schaffen, sind viele Vorschläge, wie Schreitbalken (Walking Beams), Kühlmitteleinpressen in den Luftspalt, Kokillenhohlraum mit unterschiedlichen Konizitäten etc., vorgeschlagen worden.Since the beginning of continuous casting with continuous molds the experts are concerned with the problem of the formation of air gaps between strand crust and mold wall below the bath level deals. This gap formation reduces the heat transfer between The mold and strand crust are very important and cause an uneven Cooling the strand crust, leading to strand defects, such as Rhomboidity, cracks, structural defects etc., leads. To over the whole Mold length as good a contact of the strand crust as possible on all sides to the mold wall and thus the best possible conditions for creating heat dissipation, many suggestions are how Walking beams, coolant injection into the air gap, Mold cavity with different conicity etc., been proposed.
Aus der US-PS 4'207'941 ist eine Kokille zum Stranggiessen von Stahlsträngen mit polygonalen, insbesondere mit quadratischen Querschnitten, bekannt. Der Querschnitt des beidseitig offenen Formhohlraumes ist auf der Eingiessseite ein Quadrat mit Eckhohlkehlen und auf der Strangaustrittsseite ein unregelmässiges Zwölfeck. In den Eckbereichen wird zur Eckhohlkehle hin der Giesskonus in Stranglaufrichtung stetig vergrössert, und er ist im Bereich der Hohlkehle auf einer Teillänge der Kokille etwa doppelt so gross wie im Mittelbereich der Kokillenwand. Beim Giessen mit solchen Kokillen können Verklemmungen des Stranges innerhalb der Kokille auftreten, die zu Strangabrissen und Durchbrüchen führen. Auch wird anstelle eines Quadrates ein Zwölfeck gegossen. Insbesondere ist es schwierig, solche Kokillen für unterschiedliche Giessgeschwindigkeiten während eines laufenden Gusses zu dimensionieren, wie sie bei langen Sequenzgüssen mit vielen Pfannenwechseln unvermeidbar sind. A mold for the continuous casting of is known from US Pat. No. 4,207,941 Steel strands with polygonal, especially with square Cross sections, known. The cross section of the open on both sides The mold cavity is a square with corner fillets on the pouring side and an irregular one on the strand exit side Twelve corner. In the corner areas, the corner fillet becomes The pouring cone is continuously enlarged in the direction of the strand, and it is in the area of the fillet over a partial length of the mold twice as large as in the central area of the mold wall. At the Pouring with such molds can jam the strand occur within the mold leading to strand breaks and Lead breakthroughs. Also, instead of a square Cast a dodecagon. In particular, it is difficult to use such molds for different casting speeds during one dimensioning the current casting, as in long sequence castings with many pan changes are inevitable.
In DE-A-3 907 351 wird eine Kokille mit Eingiesstrichter für eine Dünnbramme beschrieben. Die beiden Breitseiten werden auf der Eingiessseite der Kokille mit Ausbauchungen versehen, die entlang einer Teilhöhe der Kokille stetig zurückgeformt werden. Auf der Strangaustrittsseite der Kokille ist der Querschnitt des Formhohlraumes rechteckig und auf den gewünschten Dünnbrammenquerschnitt ausgerichtet. Der alleinige Zweck der beiden gegenüberliegenden Ausbauchungen besteht darin, den erforderlichen Platz für ein Tauchrohr zu schaffen. An den beiden Schmalseiten sind keine Ausbauchungen und auch keine Verformungen der Strangschale durch die Kokillenwände vorgesehen.DE-A-3 907 351 discloses a mold with a pouring funnel for a Thin slab described. The two broad sides are on the Pouring side of the mold with bulges that run along a partial height of the mold are continuously reshaped. On the The strand exit side of the mold is the cross section of the mold cavity rectangular and to the desired thin slab cross section aligned. The sole purpose of the two opposite Bulges is the space required to create for a dip tube. Are on the two narrow sides no bulges and no deformation of the strand shell provided by the mold walls.
Aus AT-B-379 093, die den Oberbegriff der Ansprüche 1 und 2 bildet,
ist eine Kokille mit einem beidseitig offenen Formhohlraum
zum Stranggiessen eines Dünnstranges bekannt. Die Umfangslinie
des Formhohlraumquerschnittes auf der Eingiessseite kann in vier
Umfangsabschnitte aufgeteilt werden. Auf zwei Umfangsabschnitten,
die gleichzeitig die Breitseiten des Dünnstrangquerschnittes bilden,
sind auf der Eingiessseite Querschnittsvergrösserungen in
der Form von Ausbauchungen gegenüber dem gleichen Querschnitt auf
der Strangaustrittsseite vorgesehen. Das Mass der Ausbauchung,
das in diesem Beispiel der Bogenhöhe entspricht, verkleinert sich
stetig in Stranglaufrichtung und ist am Kokillenausgang null. Auf
den beiden anderen Umfangsabschnitten, den Schmalseiten dieser
Dünnbrammenkokille, verlaufen, im Gegensatz zu den beiden Breitseiten,
die Schmalseitenwände in Stranglaufrichtung divergierend.
Diese in Stranglaufrichtung divergierenden Schmalseiten sind zur
Lösung der dort gestellten Aufgabe,
besonders dünne Stränge unter Verwendung eines bis unter den
Giessspiegel reichendes Giessrohr zu giessen,
notwendig, um Quetschungen und
Faltenbildungen an den Breitseiten zu verhüten. From AT-B-379 093, which forms the preamble of
Der Erfindung liegt die Aufgabe zugrunde, die genannten Nachteile zu überwinden. Insbesondere soll durch Verformung des Strangquerschnittes innerhalb der Kokille eine über den ganzen Umfang bemessbare Kühlung der Strangkruste erreicht werden, um einerseits die Strangqualität zu verbessern und anderseits die Giessgeschwindigkeit zu erhöhen. Es sollen aber auch Giessgeschwindigkeitsunterschiede während eines laufenden Gusses ohne die genannten Nachteile, wie Strangabriss und Durchbruch, ermöglicht werden.The invention has for its object the disadvantages mentioned to overcome. In particular, by deforming the strand cross section within the mold, one that can be measured over the entire circumference Cooling of the strand crust can be achieved on the one hand to improve the strand quality and on the other hand the casting speed to increase. But there should also be differences in casting speed during a running cast without the above Disadvantages such as strand break and breakthrough are made possible.
Gemäss der Erfindung wird diese Aufgabe durch die Gesamtheit der
Merkmale der Ansprüche 1 oder 2 gelöst.According to the invention, this object is achieved by the total of
Features of
Mit der erfindungsgemässen Kokille ist es möglich, bei Knüppeln und kleinen Vorblockquerschnitten eine in allen Umfangsabschnitten gleichmässige und in ihrer Intensität in vorgegebenen Grenzen bemessbare Kühlung aufzuzwingen. Dadurch kann die Kristallisation der Strangkruste beeinflusst und die Strangqualität verbessert werden. Spiesskantigkeit, Oberflächen- und Gefügefehler sind vermeidbar. Durch die gezielte Verformung des Querschnittes kann im weiteren bei der erfindungsgemässen Kokille die Gleichmässigkeit der Kühlung entlang des Strangumfanges, auch bei unterschiedlichen Giessgeschwindigkeiten, verbessert werden. Die Gefahr für Strangabrisse oder Durchbrüche kann bei hohen Giessgeschwindigkeiten wesentlich reduziert werden.With the mold according to the invention, it is possible for billets and small billet cross sections in all circumferential sections uniform and in their intensity within predetermined limits to impose measurable cooling. This can cause crystallization affects the strand crust and improves strand quality become. Skewed edges, surface and structural defects are avoidable. By deliberately deforming the cross section, further uniformity in the mold according to the invention cooling along the circumference of the strand, even with different ones Casting speeds can be improved. The danger for Strand breaks or breakthroughs can occur at high casting speeds be significantly reduced.
Die Ausbauchungen des Formhohlraumes in jedem Abschnitt des Umfanges auf der Eingiessseite stellen bei der erfindungsgemässen Kokille jeweils Bogenlinien dar, die gegenüber klassischen Rohrkokillen eine höhere Formstabilität des Kokillenrohres, insbesondere im hoch wärmebelasteten Badspiegelbereich, aufweisen. Diese höhere Formstabilität verbessert bei Rohr- und anderen Kokillen einerseits die Masshaltigkeit des Formhohlraumes während der Standzeit der Kokille und anderseits die Strangqualität.The bulges of the mold cavity in each section of the circumference on the pouring side in the inventive Each mold represents curved lines, compared to classic tubular molds a higher dimensional stability of the mold tube, in particular in the highly heat-exposed bathroom mirror area. This higher dimensional stability improves with tube and other molds on the one hand, the dimensional accuracy of the mold cavity during the Tool life and on the other hand the strand quality.
Die Ausbauchung wird in der Regel von der Eingiessseite entlang des Formhohlraumes auf einer Teillänge oder auf der ganzen Länge der Kokille vermindert. Am Kokillenausgang kann beispielsweise noch eine Bogenlinie in jedem Umfangsabschnitt verbleiben. Gemäss einer weiteren Ausführungsform wird zusätzlich vorgeschlagen, den Querschnitt des Formhohlraumes auf der Kokillenaustrittsseite allseitig zwischen Ecken geradlinig vorzusehen. Am Kokillenausgang kann die Kokille auch rund sein oder ein Vorprofil, z.B. die Form eines Doppel-T-Trägers, aufweisen.The bulge is usually along the pouring side of the mold cavity over a partial length or over the entire length the mold diminished. At the mold exit, for example there is still a curved line in each circumferential section. According to a further embodiment is additionally proposed Cross section of the mold cavity on the mold exit side to be provided in a straight line on all sides between corners. At the mold exit the mold can also be round or a preliminary profile, e.g. the Form of a double-T beam.
Bei der Dimensionierung der Ausbauchung bzw. der Bogenhöhe ist zu beachten, dass auch bei kurzen Verweilzeiten der Strangkruste in der Kokille, d.h. bei hohen Giessgeschwindigkeiten, keine Verklemmung des Stranges in den Grenzbereichen von zwei zusammenstossenden Umfangsabschnitten, z.B. in den Ecken, stattfinden kann. Zu diesem Zweck wird die Differenz zwischen der Bogenlänge auf der Badspiegelhöhe und am Kokillenausgang bzw. der Sehnenlänge am Kokillenausgang bestimmt und mit der Schwindung der Strangkruste quer zur Stranglaufrichtung verglichen. Die genannte Differenz kann durch das Mass der Ausbauchung bzw. der Bogenhöhe so gewählt werden, dass sie mit der genannten Schwindung im wesentlichen in Uebereinstimmung ist. Gemäss einem Ausführungsbeispiel kann das Lichtmass zwischen gegenüberliegenden Umfangsabschnitten des Formhohlraumes auf der Eingiessseite, im Bereich der grössten Ausbauchung gemessen, etwa 5 - 15 %, vorzugsweise mindestens 5 % bzw. 8 %, grösser als das Lichtmass zwischen gegenüberliegenden Umfangsabschnitten auf der Strangaustrittsseite gewählt werden. When dimensioning the bulge or the bend height is too note that even with short dwell times of the strand crust in the mold, i.e. at high casting speeds, no jamming of the strand in the border areas of two colliding Peripheral sections, e.g. in the corners can. For this purpose, the difference between the arc length at the level of the bath level and at the mold exit or tendon length determined at the mold exit and with the shrinkage of the Strand crust compared to the strand running direction compared. The said Difference can be due to the size of the bulge or the arch height be chosen so that they essentially with the shrinkage mentioned is in agreement. According to an embodiment can measure the light between opposite circumferential sections of the mold cavity on the pouring side, in the area measured at the largest bulge, about 5-15%, preferably at least 5% or 8%, greater than the light dimension between opposite ones Circumferential sections on the strand exit side to get voted.
Das Mass der Bogenhöhe kann sich in Giessrichtung degressiv oder eventuell progressiv verkürzen und auf Null zusteuern. Nach einer weiteren Ausführungsform kann das Mass der Bogenhöhe sich in Stranglaufrichtung folgenden Querschnitten mit Vorteil stetig abnehmen. Die Veränderung der Bogenhöhe in Stranglaufrichtung kann gemäss einem weiteren Ausführungsbeispiel auch als Konizitätsgrad festgelegt werden. Die Form und das Mass der Ausbauchung sind in allen Abschnitten gleich. Die Konizitäten der Ausbauchung verändern sich entlang dem Umfangsabschnitt in ihrer Grösse. Gemäss einem Ausführungsbeispiel kann an den beiden Enden jedes Umfangsabschnittes eine Konizität zwischen 0 und 1 %/m und in der Mitte des Umfangsabschnittes eine solche zwischen 10 und 35 %/m vorgesehen werden.The measure of the arc height can be degressive or in the pouring direction possibly shorten progressively and head towards zero. After a another embodiment, the measure of the arc height can be in Advantageously, continuously decrease the cross-section of the following cross-sections. The change in the bow height in the direction of the strand can according to a further embodiment also as a degree of taper be determined. The shape and the size of the bulge are in all sections the same. Change the conicity of the bulge along the circumferential section in size. According to An embodiment can at the two ends of each peripheral section a taper between 0 and 1% / m and in the middle the circumferential section is provided between 10 and 35% / m become.
Eine weitere Variationsmöglichkeit ist die Wahl der Länge bzw. Teillänge des Formhohlraumes mit Ausbauchungen. Es ist grundsätzlich möglich, dass sich die Bogenhöhe der Ausbauchung über die gesamte Formhohlraumlänge reduziert. Es sind aber auch nur Teillängen denkbar. Ein vorteilhaftes Ausführungsbeispiel sieht eine Teillänge von mindestens 50 % der Kokillenlänge vor. Bei heute üblichen Kokillen von 800 mm Länge beträgt die Teillänge mindestens 400 mm.Another variation is the choice of length or Partial length of the mold cavity with bulges. It is fundamental possible that the arc height of the bulge over the total mold cavity length reduced. But they are also only partial lengths conceivable. An advantageous embodiment sees one Partial length of at least 50% of the mold length. With today The usual molds of 800 mm in length are at least part of the length 400 mm.
Bei rechteckigen konischen Kokillen gemäss Stand der Technik ist
die Konizität in den Ecken bzw. in den Eckbereichen um den Faktor
Wurzel 2 grösser als an den Seitenwänden. Diese Tatsache kann bei
solchen Kokillen, deren Konizitätsgrad das übliche Mass von 0,9 -
1,2 %/m überschreitet, zu Verklemmungen und Strangabrissen führen.
Anstelle der konisch angeordneten Wände der im Stand der
Technik bekannten Kokillen wird gemäss der Erfindung die
Strangquerschnittsform beim Durchlauf durch die Teillänge des Kokillenhohlraumes
verformt und dabei die Kühlleistung gesteuert.
Im Grenzbereich von zwei zusammenstossenden Umfangsabschnitten
bzw. in den Ecken des Formhohlraumes ist die Gestaltung der Konizität
unabhängig vom Mass und vom Konizitätsgrad der Ausbauchung
frei wählbar. Dies erlaubt erstmals Kokillen zu bauen, deren Konizität
in den Ecken bzw. Eckbereichen unabhängig von der Konizität
und der Form der ausgebauchten Seitenflächen gewählt werden
kann. Es ist beispielsweise möglich, die Konizität in den Ecken
je nach dem Mass der Rückverformung der Ausbauchung, der Schrumpfung
der Strangkruste etc. positiv, neutral oder negativ zu gestalten.In the case of rectangular conical molds according to the prior art
the taper in the corners or in the corner areas by the
In einem Ausführungsbeispiel wird vorgeschlagen, die über die Diagonale gemessene Konizität auf der Teillänge mit Ausbauchungen in einer Grössenordnung zwischen 0 - 1 %/m, bzw. zwischen 0 - 0,5 %/m, vorzusehen.In one embodiment, it is proposed that the Diagonal measured taper on the partial length with bulges in an order of magnitude between 0 - 1% / m, or between 0 - 0.5% / m to be provided.
Aus verschiedenen bekannten Gründen werden bei polygonalen Strangquerschnitten die Ecken des Formhohlraumes abgerundet. Es hat sich als besonders vorteilhaft erwiesen, wenn die Ecken des Formhohlraumes Hohlkehlen mit einem Radius von 3 - 8 % der Seitenlänge des Querschnittes aufweisen.For various known reasons, polygonal Strand cross-sections rounded the corners of the mold cavity. It has proven to be particularly advantageous when the corners of the Mold cavity fillet with a radius of 3 - 8% of the side length of the cross section.
Die Umfangsabschnitte mit Ausbauchungen können von Kreislinien, Kurven oder von zusammengesetzten geraden Linien begrenzt sein.The peripheral sections with bulges can be of circular lines, Curves or be bounded by compound straight lines.
Im nachfolgenden werden anhand von Figuren Ausführungsbeispiele der Erfindung erläutert.Exemplary embodiments are described below with reference to figures of the invention explained.
Es zeigen:
- Fig. 1:
- Einen Längsschnitt durch eine Rohrkokille nach der Linie I-I von Fig. 2,
- Fig. 2:
- eine Draufsicht auf die Kokille gemäss Fig. 1,
- Fig. 3:
- eine Draufsicht auf ein Beispiel einer Ecke eines ausgebauchten Formhohlraumes mit vier Höhenkurven,
- Fig. 4:
- eine Draufsicht auf ein weiteres Beispiel einer Ecke eines ausgebauchten Formhohlraumes mit vier Höhenkurven,
- Fig. 5:
- eine Draufsicht auf ein weiteres Beispiel eines halben Formhohlraumes mit vier Höhenkurven,
- Fig. 6:
- eine Draufsicht auf eine runde Kokille und
- Fig. 7:
- eine Draufsicht auf eine Kokille, deren Formhohlraum durch Bogenlinien begrenzt ist.
- Fig. 1:
- A longitudinal section through a tubular mold along the line II of Fig. 2,
- Fig. 2:
- 2 shows a plan view of the mold according to FIG. 1,
- Fig. 3:
- 4 shows a plan view of an example of a corner of a bulged mold cavity with four height curves,
- Fig. 4:
- 4 shows a plan view of a further example of a corner of a bulged mold cavity with four height curves,
- Fig. 5:
- 4 shows a plan view of a further example of a half mold cavity with four height curves,
- Fig. 6:
- a top view of a round mold and
- Fig. 7:
- a plan view of a mold, the mold cavity is limited by curved lines.
In Fig. 1 und 2 ist eine Kokille 3 zum Stranggiessen von polygonalen
Strangquerschnitten, im vorliegenden Beispiel von quadratischen
Strangquerschnitten, dargestellt. Ein Pfeil 4 zeigt auf eine
Eingiessseite und ein Pfeil 5 auf eine Strangaustrittsseite
der Kokille 3. Die Querschnitte eines Formhohlraumes 6 weisen auf
der Eingiess- und Strangaustrittsseite unterschiedliche geometrische
Formen auf. Wie am besten in Fig. 2 erkennbar, ist der Querschnitt
des Formhohlraumes 6 auf der Eingiessseite 4 zwischen den
Ecken 8 - 8''' mit Querschnittsvergrösserungen gegenüber der
Strangaustrittsseite in der Form von Ausbauchungen 9 versehen.
Eine Bogenhöhe 10, die das Mass der Ausbauchung darstellt, nimmt
in Stranglaufrichtung 11 auf einer Teillänge 12 des Formhohlraumes
6 stetig ab. Die Formhohlraumquerschnitte in den Ebenen 14
und 15 begrenzen einen Kokillenteil 13 mit quadratischem Querschnitt
mit Hohlkehlen 16, wie im Stand der Technik bekannt.1 and 2 is a
Eine Umfangslinie 17 zeigt den Formhohlraumquerschnitt in der
Ebene 14 und eine Umfangslinie 18 den Formhohlraumquerschnitt in
der Ebene 15. Der Querschnitt des Formhohlraumes 6 ist auf der
Kokillenaustrittsseite allseitig zwischen den Ecken 8 geradlinig.
Mit einem Pfeil 2 ist ein Umfangsabschnitt der Umfangslinie des
Formhohlraumes 6 bezeichnet. Bei dieser Kokille sind 4 Umfangsabschnitte
mit gleichartigen Querschnittsvergrösserungen 7 vorgesehen.
Anstelle der quadratischen Grundform des Formhohlraumes 6
könnte auch ein sechseckiger, rechteckiger etc. Querschnitt als
Grundform dienen.A
Ein Lichtmass 20 zwischen gegenüberliegenden Seiten des Formhohlraumes
6 auf der Eingiessseite 4 im Bereich der grössten Ausbauchung
ist gegenüber einem Lichtmass 21 zwischen den gegenüberliegenden
Seiten auf der Strangaustrittsseite 5 um 5 - 15 % grösser.
Das Lichtmass 20 kann, anders ausgedrückt, auch mindestens 5 %
bzw. mindestens 8 % grösser als das Lichtmass 22 in der Ebene 14
am Ende der Teillänge 12 sein.A dimension of light 20 between opposite sides of the
Die Bogenhöhe 10 der Ausbauchung 9 nimmt in Stranglaufrichtung 11
bei sich folgenden Querschnitten stetig ab. Die Konizität der maximalen
Bogenhöhe 10 entlang einer Linie 24 kann nach der Formel
Die Teillänge 12 ist in diesem Beispiel 400 mm oder etwa 50 % der
Kokillenlänge, die etwa 800 mm misst.The
In Fig. 3 zeigen Höhenkurven 30 - 33 eine Ecke eines ausgebauchten
Formhohlraumes 35. Die Höhenkurve 30 stellt die oberste Kante
des Formhohlraumes 35 der Kokille 34 dar. Mit 36 ist die Wandstärke
eines Kokillenrohres angedeutet. 33 zeigt die Höhenkurve
am Kokillenausgang. Zwischen den Kurven 30 und 33 kann die Konizität
auf zwei Zwischenhöhen herausgelesen werden. Kurven 31 und
32 zeigen die abnehmenden Bogenhöhen der Ausbauchungen, die während
des Giessens eine Verformung der Strangkruste verursachen.
Im Bereich der Hohlkehle 38 ist die Konizität des Formhohlraumes
35 entlang einem Diagonalschnitt nach der Linie 39 0 - 1 %/m,
vorzugsweise 0,1 - 0,5 %/m. Eine Verformung der Strangkruste entlang
der Linie 39 ist in der Regel nicht vorgesehen.In Fig. 3, height curves 30-33 show a corner of a bulged
In Fig. 4 sind ähnliche Höhenkurven 40 - 43 wie in Fig. 3 dargestellt.
Der wesentliche Unterschied liegt in der Gestaltung der
Hohlkehle 48 entlang der Diagonallinie 49. Die Hohlkehle 48 weist
in Stranglaufrichtung einen negativen Konus auf. Im Eckbereich
ist in Stranglaufrichtung somit eine Formhohlraumerweiterung vorgesehen.
Je nach Format des Stranges, gewählter Bogenhöhe der
Ausbauchung, die zurückverformt werden muss, kann es von Interesse
sein, einen negativen Konus an den Ecken 48 entlang der Diagonallinie
49 vorzusehen, um jegliches Verklemmen des Stranges in
der Kokille auszuschalten. Je nach der geometrischen Ausbildung
des Eckbereiches kann zusätzlich die Kühlung im Kantenbereich des
Stranges gesteuert werden. Ein negativer Konus entlang der Diagonallinie
49 kann auch erwünscht sein, um Sehnenverlängerungen
beim Zurückverformen von starken Ausbauchungen aufzufangen, die
durch die Schwindung nicht kompensiert werden.FIG. 4 shows similar height curves 40-43 as in FIG. 3.
The main difference lies in the design of the
In Fig. 5 sind die Ausbauchungen durch zusammengesetzte gerade
Linien begrenzt. Höhenkurven 50 - 53 stellen eine stetige Abnahme
der Ausbauchungen dar. Damit in der Mitte der ausgebauchten Seiten
keine Stosskante entsteht, ist eine Abrundung 54 angebracht.
Die geraden Linien laufen tangential auf eine Hohlkehle 58 zu. In
diesem Beispiel ist entlang der Hohlkehle 58 in Stranglaufrichtung
keine Konizität vorgesehen. In einem Schnitt entlang der
Diagonale 59 verläuft die Hohlkehle 58 im wesentlichen parallel
zur Längsmittelachse der Kokille.In Fig. 5 the bulges are straight by compound
Lines limited. Elevation curves 50 - 53 represent a steady decline
of the bulges. So in the middle of the bulged sides
there is no abutting edge, a rounding 54 is provided.
The straight lines run tangentially to a
Zur Bestimmung der Konizität der Hohlkehlen 38, 48, 58 in den
Fig. 3 - 5 sind Berechnungen und/oder Giessversuche notwendig.
Auf der Teillänge der Kokille verlängert sich bei abnehmender Bogenhöhe
der Ausbauchung einerseits die jedem Kreisbogen zugehörige
Sehne. Anderseits kann die Schwindung der Strangkruste quer
zur Stranglaufrichtung bei einer bestimmten Giessgeschwindigkeit
berechnet und mit der Sehnenverlängerung verglichen werden. Aus
der Differenz beider Werte kann die Konizität im Eckbereich festgelegt
werden. Es ist dabei zu beachten, dass bei hohen Giessgeschwindigkeiten,
d.h. bei kurzer Verweilzeit der Strangkruste in
der Kokille, der Wert für die Schwindung kleiner ist als bei
niedrigen Giessgeschwindigkeiten.To determine the taper of the
In Fig. 6 und 7 sind Kokillen dargestellt, deren Formhohlräume 60
bzw. 70 durch kurven- und kreisförmige Flächen begrenzt sind. Umfangslinien
61, 71 des Formhohlraumquerschnittes sind in je drei
Umfangsabschnitte 62, 72 unterteilt. Die Anzahl der Umfangsabschnitte
62, 72 kann frei gewählt werden, wobei im wesentlichen
runde Kokillen, wie in den Figuren dargestellt, in der Regel in 3
- 6 Umfangsabschnitte 62, 72 unterteilt sind. Jeder Umfangsabschnitt
62, 72 auf der Eingiessseite weist gegenüber der Strangaustrittsseite
eine Querschnittsvergrösserung in der Form einer
Ausbauchung 63, 73 auf. In diesen Beispielen sind die Querschnittsvergrösserungen
durch bogenförmig begrenzte Ausbauchungen
dargestellt. Durch Pfeile 65, 65', 65'' und 75, 75' und durch deren
Länge ist das Mass der Ausbauchung 63, 73 dargestellt. Dieses
Mass verkleinert sich auf der Teillänge des Kokillenhohlraumes
derart, dass sich die Strangquerschnittsform beim Durchlauf durch
die Teillänge verformt. Die Form und das Mass der Ausbauchung 63,
73 ist in allen Umfangsabschnitten 62, 72 gleich. In Stranglaufrichtung
gemessene Konizitäten der Ausbauchungen 63, 73 sind entlang
der Umfangsabschnitte 62, 72 in ihrer Grösse unterschiedlich.
An den beiden Enden 66, 66', 76, 76' jedes Umfangsabschnittes
62, 72 ist die Konizität Null bis 1 %/m und in der Mitte 67,
77 der Umfangsabschnitte ist in der Regel eine Konizität zwischen
10 - 35 %/m vorgesehen.FIGS. 6 and 7 show molds whose
Bei im wesentlichen runden Formhohlraumquerschnitten ist es auch möglich, den Strang in zwei Teillängen, die unmittelbar einander folgen oder eine Zwischenzone zwischen den Teillängen aufweist, zu verformen. Bei solchen Kokillen können die Umfangsabschnitte der einander sich folgenden Teillängen gegeneinander versetzt, vorzugsweise um einen halben Umfangsabschnitt versetzt, angeordnet werden.It is also the case with essentially round mold cavity cross sections possible, the strand in two partial lengths that are directly adjacent to each other follow or has an intermediate zone between the partial lengths, to deform. In such molds, the peripheral sections the successive partial lengths offset from each other, preferably offset by half a circumferential section become.
Um lange Standzeiten solcher Kokillen zu erreichen, oder um die Strangoberfläche zu verbessern, können alle im Stand der Technik bekannten Massnahmen zur Reibungsverminderung, wie Schmierung, Oberflächenbehandlung, Ueberzüge, Materialwahl der Kokille etc., angewendet werden. In order to achieve long service lives of such molds, or to achieve that Strand surface improvement can all be done in the prior art known measures to reduce friction, such as lubrication, Surface treatment, coatings, material selection of the mold etc., be applied.
Alle Figuren zeigen zu einer besseren Uebersicht gerade Rohrkokillen. Die Erfindung ist aber auch auf Bogenkokillen sowie auf Block-, Plattenkokillen etc. anwendbar.All figures show straight tube molds for a better overview. However, the invention is also based on arc molds Block, plate molds etc. applicable.
Claims (11)
- A mould for the continuous casting of metals, preferably steel, with a mould cavity (60, 70) which is open at both ends and has, at the pouring-in end of the mould along a peripheral line (61, 71) of the mould cross-section, at least two peripheral portions (62, 72) which each bound a cross-sectional enlargement of the mould cavity, compared to the same peripheral portions of the mould cavity cross-section at the billet outlet end of the mould, in the form of bulges, and arc heights of the bulges (63, 73) decrease, in the direction of advance of the billet, in such a manner that, during casting, a billet shell forming in the mould cavity (60, 70) is shaped along the peripheral portions as it passes through the mould cavity (60, 70), characterised in that, when casting billets and blooms, the peripheral line (61, 71) of an approximately round mould cavity cross-section is subdivided, at the pouring-in end, into at least three peripheral portions (62, 72) of substantially equal size and each of these peripheral portions (62, 72) has, at the pouring-in end, the cross-sectional enlargement of the mould cavity in the form of a bulge, and the arc heights of the bulges (63, 73) decrease, over all the peripheral portions, in the direction of advance of the billet, at least along a partial length of the mould cavity (60, 70).
- A mould for the continuous casting of polygonal, preferably quadrilateral or hexagonal, steel billets, with a mould cavity (6) which is open at both ends and has, at the pouring-in end (4) of the mould (3) along a peripheral line (61, 71) of the mould cavity cross-section and between corners of the said mould cavity (6), at least two peripheral portions (2) which each bound a cross-sectional enlargement (7) of the mould cavity, compared to the same peripheral portions of the mould cavity cross-section at the billet outlet end (5) of the mould, in the form of bulges, and arc heights of the bulges (10) decrease, in the direction of advance (11) of the billet, in such a manner that, during casting, a billet shell forming in the mould cavity (6) is shaped along the peripheral portions as it passes through the mould cavity (6), characterised in that, when casting billets and blooms, the peripheral line of the polygonal mould cavity cross-section has, at the pouring-in end and between all the corners (8 - 8'''), peripheral portions (2) with cross-sectional enlargements (7) of the mould cavity (6) in the form of bulges (9), and the arc heights (10) of the bulges decrease, over all the peripheral portions, in the direction of advance (11) of the billet, at least along a partial length (12) of the mould cavity (6).
- A mould according to claim 1 or 2, characterised in that the shape and the size of the bulges (9, 63, 73) are identical along all the peripheral portions (2, 62, 63).
- A mould according to one of claims 1 to 3, characterised in that the conicities of the bulges (9, 63, 73), measured along the peripheral portion (2, 62, 63) in the direction of advance (11) of the billet differ in size, provision preferably being made for a conicity of between 0 and 1 %/m at the two ends (66, 66', 76, 76') of each peripheral portion (62, 72), and for a conicity of between 10 and 35 %/m in the middle (67, 77) of the peripheral portion (62, 72).
- A mould according to claim 2, characterised in that the mould cavity cross-section has a preliminary profile, preferably the shape of a double-T girder, at the billet outlet end.
- A mould according to one of claims 1 - 5, characterised in that the cross-sectional enlargement in each peripheral portion (62, 72) is bounded by a circular portion (63, 73).
- A mould according to one of claims 2 - 6, characterised in that the internal dimension (20) between opposite peripheral portions at the pouring-in end (4), measured in the region of maximum bulge (9), is about 5 - 15%, preferably at least 5% or 8%, greater than the internal dimension (21) between the same peripheral portions at the billet outlet end (5).
- A mould according to one of claims 1 to 7, characterised in that the partial length (12) amounts to at least 50% of the length of the mould.
- A mould according to one of claims 2 - 6, characterised in that, in the case of a square cross-section, the conicity measured across a diagonal section amounts to 0 - 1 %/m, preferably 0.1 - 0.5 %/m.
- A mould according to one of claims 2 - 9, characterised in that the corners (8 - 8''') of the mould cavity (6, 35) have grooves (16, 38, 48, 58) with a radius of 3 - 8% of the lateral length of the cross-section.
- A mould according to one of claims 1 to 10, characterised in that the conicity along the partial length (12) in the boundary region between two abutting peripheral portions (62, 72) with cross-sectional enlargements is determined from a geometrical calculation of the peripheral length and from a calculation of the shrinkage of the billet shell transversely to the length of the billet.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH36791 | 1991-02-06 | ||
| CH36791 | 1991-02-06 | ||
| CH367/91 | 1991-02-06 | ||
| CH326391 | 1991-11-08 | ||
| CH3263/91 | 1991-11-08 | ||
| CH326391 | 1991-11-08 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP0498296A2 EP0498296A2 (en) | 1992-08-12 |
| EP0498296A3 EP0498296A3 (en) | 1992-09-02 |
| EP0498296B1 EP0498296B1 (en) | 1994-05-18 |
| EP0498296B2 true EP0498296B2 (en) | 2000-12-06 |
Family
ID=25684364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92101506A Expired - Lifetime EP0498296B2 (en) | 1991-02-06 | 1992-01-30 | Mould for continuous casting of metals, especially of steel |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US5360053A (en) |
| EP (1) | EP0498296B2 (en) |
| JP (1) | JPH0767600B2 (en) |
| KR (1) | KR970005365B1 (en) |
| CN (1) | CN1032629C (en) |
| AT (1) | ATE105750T1 (en) |
| BR (1) | BR9200393A (en) |
| CA (1) | CA2060604C (en) |
| DE (1) | DE59200159D1 (en) |
| ES (1) | ES2056670T5 (en) |
| FI (1) | FI97702C (en) |
| MX (1) | MX9200481A (en) |
| TR (1) | TR27065A (en) |
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| US4694880A (en) * | 1982-09-16 | 1987-09-22 | Gladwin Kirk M | Method of continuously casting metal slabs |
| DE3400220A1 (en) * | 1984-01-05 | 1985-07-18 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | CHOCOLATE FOR CONTINUOUSLY STEEL STRIP |
| AT379093B (en) * | 1984-02-16 | 1985-11-11 | Voest Alpine Ag | CONTINUOUS CHOCOLATE FOR A CONTINUOUS CASTING SYSTEM |
| DE3427756A1 (en) * | 1984-07-24 | 1985-03-28 | Mannesmann AG, 4000 Düsseldorf | Continuous casting mould for the production of strands made of steel |
| CH664915A5 (en) * | 1984-10-26 | 1988-04-15 | Concast Service Union Ag | CONTINUOUS CHOCOLATE FOR CONTINUOUSLY STEEL STRIPS WITH POLYGONAL CROSS-SECTION. |
| US4716955A (en) * | 1986-06-11 | 1988-01-05 | Sms Concast Inc. | Continuous casting method |
| DE3627991A1 (en) * | 1986-08-18 | 1988-02-25 | Mannesmann Ag | METHOD FOR CONTINUOUSLY MOLDING SLABS AND DEVICE FOR CARRYING OUT THE METHOD |
| IT1218613B (en) * | 1987-04-27 | 1990-04-19 | Danieli Off Mecc | PROCEDURE FOR THIN SLABS AND LINGOTTEER ADOPTING SUCH PROCEDURE |
| DE3723857A1 (en) * | 1987-07-18 | 1989-01-26 | Schloemann Siemag Ag | CHOCOLATE FOR VERTICAL STEEL STRIP CASTING |
| JPS6475145A (en) * | 1987-09-14 | 1989-03-20 | Kawasaki Steel Co | Mold for round billet continuous casting |
| JPS6475146A (en) * | 1987-09-14 | 1989-03-20 | Kawasaki Steel Co | Mold for round billet continuous casting |
| DE3907351C2 (en) * | 1989-03-08 | 1998-09-24 | Schloemann Siemag Ag | Pouring funnel of a mold |
-
1992
- 1992-01-30 EP EP92101506A patent/EP0498296B2/en not_active Expired - Lifetime
- 1992-01-30 AT AT92101506T patent/ATE105750T1/en not_active IP Right Cessation
- 1992-01-30 ES ES92101506T patent/ES2056670T5/en not_active Expired - Lifetime
- 1992-01-30 DE DE59200159T patent/DE59200159D1/en not_active Expired - Lifetime
- 1992-02-01 KR KR1019920001637A patent/KR970005365B1/en not_active IP Right Cessation
- 1992-02-03 TR TR00127/92A patent/TR27065A/en unknown
- 1992-02-04 CA CA002060604A patent/CA2060604C/en not_active Expired - Lifetime
- 1992-02-04 MX MX9200481A patent/MX9200481A/en unknown
- 1992-02-05 JP JP4019748A patent/JPH0767600B2/en not_active Expired - Lifetime
- 1992-02-05 FI FI920487A patent/FI97702C/en not_active IP Right Cessation
- 1992-02-05 BR BR929200393A patent/BR9200393A/en not_active IP Right Cessation
- 1992-02-05 US US07/831,681 patent/US5360053A/en not_active Expired - Lifetime
- 1992-02-06 CN CN92100838A patent/CN1032629C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4318105B4 (en) * | 1992-06-11 | 2004-05-13 | Concast Standard Ag | Chill for continuous casting of metal and process for producing the chill |
| CN102470425A (en) * | 2009-08-04 | 2012-05-23 | 西门子Vai金属技术有限公司 | Mould for continuous casting of long or flat products, cooling jacket designed to cooperate with such a mould and assembly comprising such a mould and such a cooling jacket |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2060604C (en) | 1999-02-09 |
| EP0498296A2 (en) | 1992-08-12 |
| ES2056670T3 (en) | 1994-10-01 |
| US5360053A (en) | 1994-11-01 |
| JPH04319044A (en) | 1992-11-10 |
| CA2060604A1 (en) | 1992-08-07 |
| JPH0767600B2 (en) | 1995-07-26 |
| FI97702C (en) | 1997-02-10 |
| BR9200393A (en) | 1992-10-13 |
| FI97702B (en) | 1996-10-31 |
| CN1064034A (en) | 1992-09-02 |
| EP0498296B1 (en) | 1994-05-18 |
| ATE105750T1 (en) | 1994-06-15 |
| KR970005365B1 (en) | 1997-04-15 |
| ES2056670T5 (en) | 2001-02-01 |
| DE59200159D1 (en) | 1994-06-23 |
| FI920487A (en) | 1992-08-07 |
| KR920016173A (en) | 1992-09-24 |
| EP0498296A3 (en) | 1992-09-02 |
| MX9200481A (en) | 1992-11-01 |
| CN1032629C (en) | 1996-08-28 |
| FI920487A0 (en) | 1992-02-05 |
| TR27065A (en) | 1994-10-12 |
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