EP2418032B2 - Flame-retardant ceramic impact absorber - Google Patents
Flame-retardant ceramic impact absorber Download PDFInfo
- Publication number
- EP2418032B2 EP2418032B2 EP10007442.6A EP10007442A EP2418032B2 EP 2418032 B2 EP2418032 B2 EP 2418032B2 EP 10007442 A EP10007442 A EP 10007442A EP 2418032 B2 EP2418032 B2 EP 2418032B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- wall
- opening
- baffle
- impact pad
- pad according
- 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.)
- Active
Links
- 239000000919 ceramic Substances 0.000 title claims 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title 1
- 239000006096 absorbing agent Substances 0.000 title 1
- 239000003063 flame retardant Substances 0.000 title 1
- 239000002184 metal Substances 0.000 description 16
- 239000000155 melt Substances 0.000 description 15
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011214 refractory ceramic Substances 0.000 description 3
- 238000012512 characterization method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 241001164374 Calyx Species 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000007787 solid 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
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/003—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with impact pads
Definitions
- the invention relates to a refractory ceramic baffle pot.
- a generic baffle is known for example from the following publications: DE 102 35 867 B3 . DE 102 02 537 C1 . US 5,358,551 . US 2004/0070123 A1 ,
- the baffle according to US 5,358,551 has a classic pot shape, in which the upper free end portion of the wall is deflected inwards.
- the molten metal after striking the bottom of the baffle, first flows along the bottom, then upwardly along the inside of the wall, and finally around the tapered baffle opening, up into the tundish.
- the baffle is formed at its upper open end with a so-called diffuser, that is, the cross section of the baffle becomes larger towards the upper outlet end to reduce the kinetic energy of the outflowing melt.
- the proposal according to DE 102 02 537 C1 provides a baffle whose wall has at least one slot extending continuously from the edge (the upper free end of the wall) to the bottom, the slot width at the widest point being less than 10% of the widthwise dimension of the Floor plan should be.
- the baffle according to US 2004/0070123 A1 has an inwardly broadened, protruded upper edge to redirect the flow of molten metal.
- baffles have a circular or rectangular base. Accordingly, the wall is endless or it consists of four wall sections.
- the base (the floor plan) may also be different, for example, oval or egg-shaped. According to the invention, it is particularly assumed that baffle pots are formed with mirror image (mirror-symmetrical) with respect to a vertical plane.
- the following information relates in each case to a normal functional position of the baffle (functional position), in which the bottom of the baffle is on or in a bottom of a metallurgical vessel and the wall of the baffle substantially perpendicular to the ground and thus substantially perpendicular from the bottom of the metallurgical Vessel extends upwards.
- the baffle according to DE 102 02 537 C1 causes molten metal that enters the baffle, at least partially flows laterally through the wall-side slot. Due to the relatively small slot width, the melt flowing through the slot can have a considerable flow velocity. This causes additional flow turbulence.
- the essay " Melt Flow Characterization in Continuous Casting Tundishes "(ISIJ International, Vol. 36 (1996), No. 6, pp. 667-672) ) defines a so-called plug flow, in which all fluid elements have the same residence time (residence time) in the tundish and a so-called dead volume.
- the dead volume characterizes the proportion of fluid whose residence time is more than twice the average residence time of the melt in the tundish.
- the flow direction is substantially horizontal or at an angle ⁇ 70 °, in particular ⁇ 45 ° to the horizontal. It has also been found to be favorable to make the baffle so that the laterally exiting flow widens upwards (toward the free upper end portion of the baffle).
- the baffle wall has at least one opening (for example a slot) with a specific cross-sectional profile.
- the width of the opening increases (in the circumferential direction of the baffle), that is, in the case of a slit-shaped opening, the spacing of the flanks laterally delimits the slot.
- baffle - As known - upwards.
- openings with a relatively large cross-section in the wall region of the baffle means that less refractory material must be used. This reduces the manufacturing costs.
- the invention relates to a refractory ceramic baffle with the features of the main claim.
- the opening can pass upwards, so that the free end of the wall is interrupted. However, the opening can also run as a discrete opening in the wall and be surrounded on all sides by wall sections.
- cross-sectional profiles are preferred, which are mirror-symmetrical to a plane that projects perpendicularly from the inside of the wall, in other words: the plane of symmetry extends radially in a baffle with a circular floor plan (bottom), whose wall is a cylindrical peripheral surface having.
- the flow is optimized when the opening has curved flanks, in particular between the sections of greatest width and smallest width. In the side view, this results in a profile of the opening similar to a funnel or a nozzle.
- the opening in the region between the largest width and the smallest width with respect to a central longitudinal axis of the opening has convexly or concavely curved flanks. This means that the width of the opening decreases steadily between the sections of greatest width and smallest width.
- the opening ends according to one embodiment at a distance from the ground. It follows that within the baffle a bottom sump is formed, in which there is regularly molten metal during the casting process.
- the opening extends over more than 50% of the height of the wall.
- the flow pattern is optimized when the opening extends over a greater part of the height of the wall, for example more than 60% or more than 70%.
- the area of the baffle wall without lateral opening can be at least 20% of the height of the wall, calculated from the ground. This corresponds to a maximum extension of the opening over 80% of the height of the wall, calculated from its upper end.
- an embodiment of the invention provides for forming the inside of the wall, between the baffle surface of the base and the opening, with an inclination ⁇ 90 ° to the horizontal.
- the result is a kind of "ramp" along which the melt, after being hit on the baffle, is led away not only laterally, but laterally upwards, specifically to the corresponding opening.
- This embodiment is also shown in more detail in the following description of the figures.
- the latter embodiment requires that the opening ends at a distance from the bottom of the baffle pot.
- the opening can also extend from the free end to the floor. This corresponds in principle to the embodiment according to FIG DE 102 02 537 C1 .
- the crucial difference to the known baffle is that the slot (the opening) in the wall of the baffle pot according to the invention is significantly larger and is characterized in particular by the fact that the cross section of the opening in the direction of the upper edge (the free edge) of Wall significantly enlarged.
- the largest width of the opening is according to the invention more than 5% of the total circumference of the wall of the baffle pot. For a baffle with square base and corresponding four equal wall sections, this means that the largest width of the opening is more than 20% of the width of the corresponding wall section. This value also applies according to the invention for baffles with a rectangular plan, with the proviso that the value of the opening width refers to each of the wall portion in which the opening is located.
- the greatest width of the opening is more than 5% of the total circumference of the wall of the baffle. Dividing the wall into four equal sections, the value for the largest width of the opening, relative to each section, is again more than 20%.
- the maximum width of the opening must be more than 20% of a quarter of the total circumference of the wall.
- the largest width is meaningfully limited to 25% of the total circumference of the baffle wall.
- the smallest width of the opening (at the end of the opening / slot adjacent to the baffle bottom) is, for example, ⁇ 4%, ⁇ 2.5%, ⁇ 1.5%, ⁇ 1.0% of the total perimeter of the wall, and may also be, for example, with a V-shape of the slot, go to zero.
- the maximum value makes sense a maximum of 5%.
- corresponding flanks of the opening are arranged between an inner side of the wall and a corresponding outer side of the wall with increasing distance.
- flanks may be bowed to the outside environment, thereby assisting the effect.
- the baffle according to FIG. 1 is constructed as follows: It has a rectangular bottom 10 with a lower base 10g and an upper baffle 10p. From the edge region of the bottom 10 extends a wall 20, which accordingly comprises four wall sections 20a, 20b, 20c and 20d.
- the free end 20k of the wall sections 20a to 20d is drawn inwardly, so that a corresponding undercut 20h results between the vertical regions of the wall sections 20a to 20d and the free end 20k (end section).
- an opening 40 is formed, which extends from the free end 20k to over half the height H of the wall portion 20a.
- the vertical height h of the opening 40 corresponds to about 0.6 H.
- the opening has its greatest width Bg at its upper end and its smallest width Bk at the lower end.
- the flanks 40f of the opening 40 are mirror-inverted relative to each other with respect to a central longitudinal axis M-M of the opening 40, resulting in a continuously decreasing cross-sectional geometry from the upper end to the lower end of the opening.
- the flanks 40f extend 90 ° to the inner side 20i of the wall 20.
- the largest width Bg of the opening 40 is about 35% of the mean length L of the associated wall portion 20a and accordingly about 9% of the total circumference of the wall 20.
- the molten metal flowing into the baffle pot (indicated schematically by the arrow S) strikes the baffle surface first 10p and then spreads along the baffle 10p before going up along the inner side 20i of the wall 20. While the melt in the region of the wall sections 20b, 20c and 20d is subsequently deflected in the region of the undercut-formed free end 20k and led out of the baffle upwards (the same applies to the melt which flows along the wall 20a adjacent to the opening 40) , The flow rate is reduced analogously with increasing width of the opening 40.
- the flow direction is at the narrow end of the opening 40 largely horizontal, obliquely directed upward at the upper, wide end. In this way, an advantageous supply of the melt from the impact pot in the associated metallurgical vessel or in the melt located there.
- FIG. 2 shows some possible cross-sectional shapes of the wall opening 40.
- Number 1 is similar to the example in FIG. 1 formed, but the opening passes down to the bottom area.
- Variation No. 2 approximates the cross-sectional profile of a funnel.
- the flanks of the opening are bowl-shaped.
- the opening according to No. 4 is completely formed in the wall 20 and otherwise corresponds to the upper part according to No. 2.
- the flanks are not curved, but designed step-like.
- the cross-sectional geometry according to No. 6 is similar to that of a calyx.
- the embodiment according to FIG. 3 differs from the according to FIG. 1 in that the opening 40 extends to the bottom 10, that is to say to the baffle surface 10p, and is formed in its lower portion in the manner of a slot with a constant width Bk.
- Another difference to the embodiment according to FIG. 1 is that the flanks 40f open to the outside 20s of the wall 20a, whereby an additional diffuser effect is achieved in the outflow of molten metal from the baffle.
- an essential difference to the other illustrated embodiments is that the inner side 20i of the wall 20a at an angle a of about 45 ° (to the horizontal) of the baffle surface 10p in the direction of the opening 40 increases, creating a kind of ramp for the molten metal is formed towards the opening 40.
- the opening 40 ends, as the side view shows, similar to the embodiment according to FIG. 1 at a distance from the baffle 10p and points, similar to at FIG. 3 , a diffuser area on.
- the baffle consists of a refractory ceramic material, for example based on magnesia, magnesia chromite, bauxite, A1 2 O 3 or mixtures thereof.
- baffle pots in which the upper free end portion of the wall (wall parts) is widened inwardly, so that the upward emerging from the baffle melt is redirected to the inside.
- baffle pot The base of the baffle pot is virtually arbitrary. Impact pots with a circular bottom and cylindrical wall and baffle pots with rectangular, in particular square bottom and corresponding four, at right angles to each other extending wall sections are clearly preferred in terms of production and flow behavior.
- each baffle at least one opening of the type described is formed on the wall side.
- analogous openings can be formed in opposite wall sections.
- Each aperture is significantly narrower in its portion adjacent the bottom than at its portion adjacent to the top edge (the upper edge) of the baffle wall. This results regularly in the side view, a cross-sectional profile, in which the width of the opening decreases from top to bottom. Only then can the desired volume flow be led away laterally and achieve the desired distribution of the flow velocity.
- the opening is wider from bottom to top and has a lower flow rate than at the bottom.
- the flow direction can be adjusted by appropriate design of the flanks of the opening, in particular in the sense to guide the flow so that the cross-section of the volume flow increases with increasing distance from the baffle.
Landscapes
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Furnace Charging Or Discharging (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Building Environments (AREA)
- Vibration Dampers (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
- Glass Compositions (AREA)
- Laminated Bodies (AREA)
- Cookers (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Finishing Walls (AREA)
- Joining Of Glass To Other Materials (AREA)
Description
Die Erfindung betrifft einen feuerfesten keramischen Pralltopf.The invention relates to a refractory ceramic baffle pot.
Ein gattungsgemäßer Pralltopf ist beispielsweise aus folgenden Druckschriften bekannt:
In allen Fällen geht es darum, Turbulenzen in einem metallurgischen Gefäß zu reduzieren, die sich ergeben, wenn eine Metallschmelze auf eine feste Unterlage trifft. Dies ist beispielsweise der Fall, wenn eine Metallschmelze aus einer Pfanne (ladle) mit einer ferrostatischen Höhe von mehreren Metern auf den Boden eines Verteilers (tundish) trifft.In all cases, it is a matter of reducing turbulence in a metallurgical vessel that results when a molten metal hits a solid surface. This is the case, for example, when a molten metal from a ladle with a ferrostatic height of several meters strikes the bottom of a distributor (tundish).
Der Pralltopf gemäß
Bei der Variante gemäß
Der Vorschlag gemäß
Der Pralltopf gemäß
Üblicherweise haben Pralltöpfe eine kreisförmige oder rechteckige Grundfläche. Entsprechend ist die Wand endlos beziehungsweise sie besteht aus vier Wandabschnitten. Die Grundfläche (der Grundriss) kann auch anders sein, beispielsweise oval oder eiförmig. Erfindungsgemäß wird insbesondere von Pralltöpfen ausgegangen, die bezüglich einer vertikalen Ebene spiegelbildlich (spiegelsymmetrisch) ausgebildet sind.Usually baffles have a circular or rectangular base. Accordingly, the wall is endless or it consists of four wall sections. The base (the floor plan) may also be different, for example, oval or egg-shaped. According to the invention, it is particularly assumed that baffle pots are formed with mirror image (mirror-symmetrical) with respect to a vertical plane.
Nachstehende Angaben beziehen sich jeweils auf eine übliche Funktionsstellung des Pralltopfes (Funktionsposition), bei der der Boden des Pralltopfes auf oder in einem Boden eines metallurgischen Gefäßes liegt und sich die Wand des Pralltopfes im Wesentlichen senkrecht vom Boden und damit im Wesentlichen senkrecht vom Boden des metallurgischen Gefäßes nach oben erstreckt.The following information relates in each case to a normal functional position of the baffle (functional position), in which the bottom of the baffle is on or in a bottom of a metallurgical vessel and the wall of the baffle substantially perpendicular to the ground and thus substantially perpendicular from the bottom of the metallurgical Vessel extends upwards.
Der Pralltopf gemäß
Der Aufsatz "
Diese Charakterisierungen werden phänomenologisch nachstehend auf die Strömung einer Metallschmelze in einem Tundish übertragen, in dem ein erfindungsgemäßer Pralltopf (impact pad, impact pot) integriert ist.These characterizations are phenomenologically transferred below to the flow of a molten metal in a tundish in which an impact pad (impact pot) according to the invention is integrated.
Aufgabe der Erfindung ist es, einen Pralltopf bereitzustellen, der folgende Optimierungen erlaubt:
- gezielte Führung der Metallschmelze im Pralltopf und Tundish
- Minimierung von Strömungsturbulenzen im Tundish
- geringer Verschleiß des Pralltopfes
- hoher Fluidanteil mit Pfropfenströmung im Tundish
- kleines Totvolumen im Tundish
- günstige Herstellungskosten des Pralltopfes.
- targeted guidance of the molten metal in the baffle and tundish
- Minimization of tundish flow turbulence
- low wear of the baffle
- high fluid content with plug flow in the tundish
- small dead volume in the tundish
- favorable production costs of the baffle pot.
Um einen Pralltopf zu schaffen, der möglichst viele dieser Anforderungen erfüllt, wurden umfangreiche Versuche und Untersuchungen durchgeführt, insbesondere in Hinblick auf ein verbessertes Strömungsverhalten der Metallschmelze. Dabei wurde untersucht:
- das Strömungsverhalten der Schmelze nach Auftreffen auf dem Boden des Pralltopfes,
- der Strömungsverlauf der Schmelze im Pralltopf
- das Strömungsverhalten der Schmelze beim Verlassen des Pralltopfes,
- das Strömungsverhalten der Schmelze nach Verlassen des Pralltopfes im Schmelzbad des zugehörigen metallurgischen Gefäßes.
- the flow behavior of the melt after hitting the bottom of the baffle,
- the flow of the melt in the baffle
- the flow behavior of the melt when leaving the baffle,
- the flow behavior of the melt after leaving the baffle in the molten bath of the associated metallurgical vessel.
Es wurde festgestellt, dass die bekannten Pralltopf-Geometrien insbesondere hinsichtlich des Strömungsverhaltens der Schmelze beim Verlassen des Pralltopfes und beim folgenden Eintritt in das Schmelzbad des zugehörigen metallurgischen Gefäßes verbesserungswürdig sind.It has been found that the known impact pot geometries are in need of improvement, in particular with regard to the flow behavior of the melt when leaving the baffle pot and during subsequent entry into the molten bath of the associated metallurgical vessel.
Es ist vorteilhaft, wenn ein Teil der Schmelze in einem Volumenstrom relativ großer Querschnittsfläche seitlich aus dem Pralltopf abgeführt wird. Die Strömungsrichtung ist dabei im Wesentlichen horizontal oder in einem Winkel < 70°, insbesondere < 45° zur Horizontalen. Es hat sich weiters als günstig herausgestellt, den Pralltopf so zu gestalten, dass der seitlich austretende Volumenstrom sich nach oben (zum freien oberen Endabschnitt des Pralltopfes hin) verbreitert.It is advantageous if a portion of the melt in a volume flow of relatively large cross-sectional area is discharged laterally from the impact pot. The flow direction is substantially horizontal or at an angle <70 °, in particular <45 ° to the horizontal. It has also been found to be favorable to make the baffle so that the laterally exiting flow widens upwards (toward the free upper end portion of the baffle).
Im Ergebnis führte dies zu einer Pralltopfgeometrie, bei der die Pralltopfwand mindestens eine Öffnung (zum Beispiel einem Schlitz) mit einem spezifischen Querschnittsprofil aufweist. Vom Boden des Pralltopfes nach oben bis zum freien Endabschnittder Wand betrachtet vergrößert sich die Breite der Öffnung (in Umfangsrichtung des Pralltopfes), das heißt, bei einer schlitzförmigen Öffnung vergrößert sich der Abstand der Flanken, die den Schlitz seitlich begrenzen.As a result, this resulted in a baffle geometry in which the baffle wall has at least one opening (for example a slot) with a specific cross-sectional profile. As viewed from the bottom of the baffle up to the free end portion of the wall, the width of the opening increases (in the circumferential direction of the baffle), that is, in the case of a slit-shaped opening, the spacing of the flanks laterally delimits the slot.
Auf diese Weise wird ein relativ breiter Volumenstrom mit relativ geringer Strömungsgeschwindigkeit im oberen Abschnitt des Pralltopfes seitlich aus dem Pralltopf herausgeführt. Analog ist der Volumenstrom, der in der Nähe des Pralltopfbodens seitlich austritt, schmaler und weist eine größere Strömungsgeschwindigkeit auf. Durch dieses Strömungsprofil werden Turbulenzen beim Eintritt in die Metallschmelze im metallurgischen Gefäß reduziert.In this way, a relatively wide volume flow with relatively low flow velocity in the upper portion of the impact pot laterally led out of the baffle. Analogously, the volume flow, which exits laterally in the vicinity of the baffle bottom, is narrower and has a greater flow velocity. This flow profile reduces turbulence on entry into the molten metal in the metallurgical vessel.
Dies führt zu einer geringeren Erosion des Feuerfestmaterials des Pralltopfes, insbesondere im Bereich der Flanken (Begrenzungen) der Öffnung. Entsprechend gelangen weniger Verunreinigungen (Fremdstoffe) in die Metallschmelze im Tundish.This leads to a lower erosion of the refractory material of the baffle, in particular in the region of the flanks (boundaries) of the opening. Accordingly, less impurities (impurities) enter the molten metal in the tundish.
Ein weiterer Teil des Volumenstroms verlässt den Pralltopf - wie bekannt - nach oben.Another part of the volume flow leaves the baffle - as known - upwards.
Die spezifische Geometrie der Öffnung und die dadurch verursachte spezifische Strömung der Schmelze seitlich durch die Öffnung in der Pralltopfwand führt auch zu der gewünschten Reduktion des Totvolumens im Tundish und zu einem höheren Anteil an Pfropfenströmung, wie nachstehende Tabelle zeigt:
Die Ausbildung von Öffnungen mit relativ großem Querschnitt im Wandbereich des Pralltopfes führt dazu, dass weniger Feuerfestmaterial verwendet werden muss. Dies reduziert die Herstellungskosten.The formation of openings with a relatively large cross-section in the wall region of the baffle means that less refractory material must be used. This reduces the manufacturing costs.
In ihrer allgemeinsten Ausführungsform betrifft die Erfindung einen feuerfesten keramischen Pralltopf mit den Merkmalen des Hauptanspruchs.In its most general embodiment, the invention relates to a refractory ceramic baffle with the features of the main claim.
In der Seitenansicht ergibt sich für die Öffnung regelmäßig eine Geometrie, bei der der Abstand zwischen Flanken der Öffnung oben deutlich größer als unten ist. Mögliche Querschnittsprofile sind in der nachfolgenden Figurenbeschreibung dargestellt und erläutert.In the side view results for the opening regularly a geometry in which the distance between flanks of the opening above is significantly larger than below. Possible cross-sectional profiles are shown and explained in the following description of the figures.
Die Öffnung kann nach oben durchlaufen, so dass das freie Ende der Wand unterbrochen wird. Die Öffnung kann aber auch als diskrete Öffnung in der Wand verlaufen und allseitig von Wandabschnitten umgeben sein. Im Interesse einer optimierten Strömung und Strömungsverteilung sind Querschnittsprofile bevorzugt, die spiegelsymmetrisch zu einer Ebene ausgebildet sind, die senkrecht von der Innenseite der Wand absteht, anders ausgedrückt: die Symmetrieebene verläuft radial bei einem Pralltopf mit kreisförmigem Grundriss (Boden), dessen Wand eine zylindrische Umfangsfläche aufweist.The opening can pass upwards, so that the free end of the wall is interrupted. However, the opening can also run as a discrete opening in the wall and be surrounded on all sides by wall sections. In the interests of optimized flow and flow distribution, cross-sectional profiles are preferred, which are mirror-symmetrical to a plane that projects perpendicularly from the inside of the wall, in other words: the plane of symmetry extends radially in a baffle with a circular floor plan (bottom), whose wall is a cylindrical peripheral surface having.
Der Strömungsverlauf wird optimiert, wenn die Öffnung gewölbte Flanken aufweist, insbesondere zwischen den Abschnitten größter Breite und kleinster Breite. In der Seitenansicht ergibt sich dabei ein Profil der Öffnung ähnlich einem Trichter oder einer Düse.The flow is optimized when the opening has curved flanks, in particular between the sections of greatest width and smallest width. In the side view, this results in a profile of the opening similar to a funnel or a nozzle.
Weitere Ausführungsformen sehen vor, dass die Öffnung im Bereich zwischen größter Breite und kleinster Breite in Bezug auf eine Mittenlängsachse der Öffnung konvex oder konkav gewölbte Flanken aufweist. Dies bedeutet, dass sich die Breite der Öffnung stetig zwischen den Abschnitten größter Breite und kleinster Breite verringert.Further embodiments provide that the opening in the region between the largest width and the smallest width with respect to a central longitudinal axis of the opening has convexly or concavely curved flanks. This means that the width of the opening decreases steadily between the sections of greatest width and smallest width.
Die Öffnung endet nach einer Ausführungsform im Abstand zum Boden. Daraus folgt, dass innerhalb des Pralltopfes ein Bodensumpf ausgebildet wird, in dem sich regelmäßig Metallschmelze beim Gießvorgang befindet.The opening ends according to one embodiment at a distance from the ground. It follows that within the baffle a bottom sump is formed, in which there is regularly molten metal during the casting process.
Die Öffnung erstreckt sich über mehr als 50 % der Höhe der Wand.The opening extends over more than 50% of the height of the wall.
Der Strömungsverlauf wird optimiert, wenn sich die Öffnung über einen größeren Teil der Höhe der Wand erstreckt, beispielsweise mehr als 60 % oder mehr als 70 %. Der Bereich der Pralltopfwand ohne seitliche Öffnung kann mindestens 20 % der Höhe der Wand entsprechen, vom Boden aus gerechnet. Dies entspricht einer maximalen Erstreckung der Öffnung über 80 % der Höhe der Wand, von deren oberem Ende aus gerechnet.The flow pattern is optimized when the opening extends over a greater part of the height of the wall, for example more than 60% or more than 70%. The area of the baffle wall without lateral opening can be at least 20% of the height of the wall, calculated from the ground. This corresponds to a maximum extension of the opening over 80% of the height of the wall, calculated from its upper end.
Um die Schmelze vom Inneren des Pralltopfes zur Öffnung gezielt hinzuführen, sieht eine Ausführungsform der Erfindung vor, die Innenseite der Wand, zwischen der Prallfläche des Bodens und der Öffnung, mit einer Neigung < 90 ° zur Horizontalen auszubilden. Es entsteht eine Art "Auflaufschräge", entlang der die Schmelze, nachdem sie auf die Prallfläche getroffen ist, nicht nur seitlich, sondern seitlich nach oben hin weggeführt wird, und zwar gezielt zur korrespondierenden Öffnung. Auch diese Ausführungsform ist in der nachfolgenden Figurenbeschreibung näher dargestellt.In order to specifically guide the melt from the interior of the baffle to the opening, an embodiment of the invention provides for forming the inside of the wall, between the baffle surface of the base and the opening, with an inclination <90 ° to the horizontal. The result is a kind of "ramp" along which the melt, after being hit on the baffle, is led away not only laterally, but laterally upwards, specifically to the corresponding opening. This embodiment is also shown in more detail in the following description of the figures.
Die letztgenannte Ausführungsform setzt voraus, dass die Öffnung mit Abstand vom Boden des Pralltopfes endet.The latter embodiment requires that the opening ends at a distance from the bottom of the baffle pot.
Die Öffnung kann aber auch vom freien Ende durchgehend bis zum Boden verlaufen. Dies entspricht prinzipiell der Ausführungsform gemäß
Die größte Breite der Öffnung beträgt erfindungsgemäß mehr als 5 % des Gesamtumfangs der Wand des Pralltopfes. Für einen Pralltopf mit quadratischer Grundfläche und entsprechend vier gleichen Wandabschnitten bedeutet dies, dass die größte Breite der Öffnung mehr als 20 % der Breite des entsprechenden Wandabschnitts beträgt. Dieser Wert gilt erfindungsgemäß auch für Pralltöpfe mit rechteckigem Grundriss, und zwar mit der Maßgabe, dass sich der Wert der Öffnungsbreite jeweils auf den Wandabschnitt bezieht, in dem die Öffnung liegt.The largest width of the opening is according to the invention more than 5% of the total circumference of the wall of the baffle pot. For a baffle with square base and corresponding four equal wall sections, this means that the largest width of the opening is more than 20% of the width of the corresponding wall section. This value also applies according to the invention for baffles with a rectangular plan, with the proviso that the value of the opening width refers to each of the wall portion in which the opening is located.
Bei Pralltöpfen mit kreisförmigem Boden und entsprechend zylindrischer Wandfläche gilt: die größte Breite der Öffnung beträgt mehr als 5 % des Gesamtumfangs der Wand des Pralltopfes. Teilt man die Wand in vier gleiche Abschnitte, beträgt der Wert für die größte Breite der Öffnung, bezogen auf jeden Abschnitt, wiederum mehr als 20 %.For baffles with a circular bottom and a correspondingly cylindrical wall surface, the following applies: the greatest width of the opening is more than 5% of the total circumference of the wall of the baffle. Dividing the wall into four equal sections, the value for the largest width of the opening, relative to each section, is again more than 20%.
Dies gilt analog für Ausführungsformen von Pralltöpfen mit einem ovalen Grundriss.This applies analogously to embodiments of baffles with an oval floor plan.
Für andere geometrische Formen gilt neben der Bedingung, dass die größte Breite der Öffnung mehr als 5 % des Gesamtumfangs der Wand betragen soll, folgende Zusatzbedingung: die größte Breite der Öffnung muss mehr als 20 % eines Viertels des Gesamtumfangs der Wand sein. Die größte Breite ist sinnvoll auf 25 % des Gesamtumfangs der Pralltopfwand begrenzt.For other geometric shapes, in addition to the requirement that the largest width of the opening should be more than 5% of the total circumference of the wall, the following additional condition applies: the maximum width of the opening must be more than 20% of a quarter of the total circumference of the wall. The largest width is meaningfully limited to 25% of the total circumference of the baffle wall.
Die kleinste Breite der Öffnung (an dem Ende der Öffnung/des Schlitzes, das dem Pralltopfboden benachbart ist) beträgt beispielsweise < 4 %, < 2,5 %, < 1,5 %, < 1.0 % des Gesamtumfangs der Wand und kann auch, zum Beispiel bei einer V-Form des Schlitzes, gegen Null gehen. Der Höchstwert beträgt sinnvoll maximal 5 %.The smallest width of the opening (at the end of the opening / slot adjacent to the baffle bottom) is, for example, <4%, <2.5%, <1.5%, <1.0% of the total perimeter of the wall, and may also be, for example, with a V-shape of the slot, go to zero. The maximum value makes sense a maximum of 5%.
Konkrete Werte sind beispielhaft:
- für die größte Breite: > 100mm, > 150 mm, > 200 mm, > 250 mm, > 300 mm,
- für die kleinste Breite < 100 mm, < 75 mm, < 50 mm, < 25 mm, < 10mm.
- for the largest width:>100mm,> 150 mm,> 200 mm,> 250 mm,> 300 mm,
- for the smallest width <100 mm, <75 mm, <50 mm, <25 mm, <10 mm.
Nach einer Ausführungsform der Erfindung sind korrespondierende Flanken der Öffnung zwischen einer Innenseite der Wand und einer korrespondierenden Außenseite der Wand mit größer werdendem Abstand angeordnet. Es entsteht dadurch eine Art "Diffuser" mit der Folge, dass sich die Querschnittsfläche der Öffnung zwischen Innenseite und Außenseite der Wand des Pralltopfes vergrößert (fächerförmig aufweitet). Auf diese Weise wird ein ballonartiger Volumenstrom in das Metallbad des metallurgischen Gefäßes zugeführt, was zu einer Verringerung der Turbulenz im metallurgischen Gefäß führt.According to one embodiment of the invention, corresponding flanks of the opening are arranged between an inner side of the wall and a corresponding outer side of the wall with increasing distance. This creates a kind of "diffuser" with the result that the cross-sectional area of the opening between the inside and outside of the wall of the baffle pot increases (widens fan-shaped). In this way, a balloon-like volume flow is fed into the metal bath of the metallurgical vessel, which leads to a reduction of the turbulence in the metallurgical vessel.
Bei diesem Ausführungsbeispiel können die Flanken zur äußeren Umgebung hin gewölbt sein, wodurch der Effekt unterstützt wird.In this embodiment, the flanks may be bowed to the outside environment, thereby assisting the effect.
Weitere Merkmale der Erfindung ergeben sich aus den Merkmalen der Unteransprüche sowie den sonstigen Anmeldungsunterlagen. Dabei können die genannten Merkmale einzeln oder in beliebigen Kombinationen für die Verwirklichung der Erfindung wesentlich sein. Soweit nicht ausdrücklich ausgeschlossen lassen sich Merkmale einzelner Ausführungsbeispiele, soweit technisch grundsätzlich möglich, miteinander kombinieren.Other features of the invention will become apparent from the features of the claims and the other application documents. The features mentioned may be essential individually or in any combination for the realization of the invention. Unless expressly excluded, features of individual embodiments, as far as technically possible in principle, combine with each other.
Die Figuren zeigen, jeweils in schematisierter Darstellung:
- Figur 1:
- eine perspektivische Ansicht eines Pralltopfes
- Figur 2:
- mögliche Querschnittsformen der Öffnung in der Wand des Pralltopfes
- Figur 3:
- eine perspektivische Ansicht einer weiteren Ausführungsform eines Pralltopfes
- Figur 4:
- eine Aufsicht, einen Längsschnitt sowie eine Seitenansicht einer dritten Ausführungsform des Pralltopfes.
- FIG. 1:
- a perspective view of a baffle pot
- FIG. 2:
- possible cross-sectional shapes of the opening in the wall of the baffle pot
- FIG. 3:
- a perspective view of another embodiment of a baffle pot
- FIG. 4:
- a plan view, a longitudinal section and a side view of a third embodiment of the baffle pot.
Der Pralltopf gemäß
Die Wand 20 mit ihrer Innenseite 20i und die Prallfläche 10p begrenzen einen Raum 30, der nach oben hin, also dem Boden gegenüberliegend, offen ist.The
Das freie Ende 20k der Wandabschnitte 20a bis 20d ist nach innen gezogen, so dass sich ein entsprechender Hinterschnitt 20h zwischen den vertikalen Bereichen der Wandabschnitte 20a bis 20d und dem freien Ende 20k (Endabschnitt) ergibt.The
Im Wandabschnitt 20a ist eine Öffnung 40 ausgebildet, die sich vom freien Ende 20k bis über die Hälfte der Höhe H des Wandabschnitts 20a erstreckt. Die vertikale Höhe h der Öffnung 40 entspricht etwa 0,6 H. Die Öffnung besitzt ihre größte Breite Bg an ihrem oberen Ende und ihre geringste Breite Bk am unteren Ende. Dazwischen sind die Flanken 40f der Öffnung 40 in Bezug auf eine Mittenlängsachse M-M der Öffnung 40 spiegelbildlich gegeneinander gewölbt, so dass sich eine kontinuierlich verringernde Querschnittsgeometrie vom oberen Ende zum unteren Ende der Öffnung ergibt. Die Flanken 40f verlaufen 90° zur Innenseite 20i der Wand 20.In the
Die größte Breite Bg der Öffnung 40 beträgt etwa 35 % der mittleren Länge L des zugehörigen Wandabschnitts 20a und entsprechend ca. 9 % des Gesamtumfangs der Wand 20. Die in den Pralltopf einströmende Metallschmelze (schematisch durch den Pfeil S gekennzeichnet) trifft zunächst auf die Prallfläche 10p und verteilt sich dann entlang der Prallfläche 10p, bevor sie entlang der Innenseite 20i der Wand 20 nach oben verläuft. Während die Schmelze im Bereich der Wandabschnitte 20b, 20c und 20d anschließend im Bereich des mit Hinterschnitt ausgebildeten freien Endes 20k umgelenkt und aus dem Pralltopf nach oben herausgeführt wird (gleiches gilt für die Schmelze, die entlang der Wand 20a neben der Öffnung 40 entlang strömt), verlässt ein erheblicher Volumenanteil der Schmelze den Raum 30 durch die Öffnung 40. Die Strömungsgeschwindigkeit reduziert sich analog mit zunehmender Breite der Öffnung 40. Die Strömungsrichtung ist am schmalen Ende der Öffnung 40 weitestgehend horizontal, am oberen, breiten Ende schräg nach oben gerichtet. Auf diese Weise entsteht eine vorteilhafte Zuführung der Schmelze aus dem Pralltopf in das zugehörige metallurgische Gefäß beziehungsweise in die dort befindliche Schmelze.The largest width Bg of the
Das Ausführungsbeispiel gemäß
Beim Ausführungsbeispiel gemäß
Für alle Ausführungsvarianten gilt:For all variants:
Der Pralltopf besteht aus einem feuerfesten keramischen Werkstoff, beispielsweise auf Basis Magnesia, Magnesiachromit, Bauxit, A12O3 oder Mischungen daraus.The baffle consists of a refractory ceramic material, for example based on magnesia, magnesia chromite, bauxite, A1 2 O 3 or mixtures thereof.
Günstig sind Pralltöpfe, bei denen der obere freie Endabschnitt der Wand (Wandteile) nach innen verbreitert ist, so dass die nach oben aus dem Pralltopf heraustretende Schmelze zuvor nach innen umgeleitet wird.Conveniently baffle pots, in which the upper free end portion of the wall (wall parts) is widened inwardly, so that the upward emerging from the baffle melt is redirected to the inside.
Die Grundfläche des Pralltopfes ist faktisch beliebig. Pralltöpfe mit kreisförmigem Boden und zylinderförmiger Wand sowie Pralltöpfe mit rechteckigem, insbesondere quadratischem Boden und entsprechend vier, im rechten Winkel zueinander verlaufenden Wandabschnitten sind jedoch in Hinblick auf Herstellung und Strömungsverhalten eindeutig bevorzugt.The base of the baffle pot is virtually arbitrary. Impact pots with a circular bottom and cylindrical wall and baffle pots with rectangular, in particular square bottom and corresponding four, at right angles to each other extending wall sections are clearly preferred in terms of production and flow behavior.
In jedem Pralltopf ist mindestens eine Öffnung der beschriebenen Art wandseitig ausgebildet. Insbesondere bei Pralltöpfen mit rechteckigem Querschnitt können in gegenüberliegenden Wandabschnitten analoge Öffnungen ausgebildet sein.In each baffle at least one opening of the type described is formed on the wall side. In particular with baffles having a rectangular cross section, analogous openings can be formed in opposite wall sections.
Jede Öffnung ist in ihrem dem Boden benachbarten Abschnitt deutlich schmaler als an ihrem Abschnitt, welcher dem oberen Rand (der oberen Kante) der Pralltopfwand benachbart ist. Dadurch ergibt sich regelmäßig in der Seitenansicht ein Querschnittsprofil, bei dem die Breite der Öffnung von oben nach unten abnimmt. Nur so lässt sich der gewünschte Volumenstrom seitlich wegführen und die gewünschte Verteilung der Strömungsgeschwindigkeit erreichen.Each aperture is significantly narrower in its portion adjacent the bottom than at its portion adjacent to the top edge (the upper edge) of the baffle wall. This results regularly in the side view, a cross-sectional profile, in which the width of the opening decreases from top to bottom. Only then can the desired volume flow be led away laterally and achieve the desired distribution of the flow velocity.
Wesentlich ist auch, dass mindestens 70 % des Gesamtquerschnitts jeder Öffnung in einem Abschnitt verlaufen, der die obere Hälfte der Wand definiert, in Vertikalrichtung betrachtet.It is also essential that at least 70% of the total cross section of each opening run in a section defining the upper half of the wall, viewed in the vertical direction.
In allen Fällen ergibt sich daraus für die ausfließende Metallschmelze, dass der Schmelzestrom im Bereich der Öffnung von unten nach oben breiter wird und oben eine geringere Strömungsgeschwindigkeit als unten aufweist. Die Strömungsrichtung kann durch entsprechende Ausbildung der Flanken der Öffnung eingestellt werden, insbesondere in dem Sinne, die Strömung so zu führen, dass sich der Querschnitt des Volumenstroms mit zunehmendem Abstand vom Pralltopf vergrößert.In all cases, this results for the outflowing molten metal that the melt flow in the range the opening is wider from bottom to top and has a lower flow rate than at the bottom. The flow direction can be adjusted by appropriate design of the flanks of the opening, in particular in the sense to guide the flow so that the cross-section of the volume flow increases with increasing distance from the baffle.
Claims (12)
- Fireproof ceramic impact pad with the following features in its functional position:1.1 a bottom (10) with a lower base area (10g) and an upper impact surface (10p),1.2 a wall consisting of multiple segments (20a-d), which extends from the bottom (10) up to a free end (20k), wherein the wall (20) with its inside (20i) and the impact area (10p) together border a space (30), which is open at its end opposite the bottom (10),1.3 at least one segment (20a) of the wall (20) features at least one opening (40), which runs from the inside (20i) of the wall continuously to the outside (20s) of the wall (20) and which is bordered by opposite flanks (40f),1.4 the opening (40) features the following cross-sectional profile:1.4.1 regarding the perimeter direction of the wall (20) the opening (40) has its largest width (Bg) adjacent to the free end segment (20a),1.4.2 regarding the perimeter direction of the wall (20) the opening (40) has its smallest width (Bk) adjacent to the bottom (10),1.4.3 the opening (40) extends along more than 50% of the height (H) of the wall (40)characterized by the following further features:1.4.4 the largest width (Bg) of the opening (40) is more than 5% of the total perimeter of the wall (20) of the impact pad,1.4.5 in a longitudinal direction, from the upper free end segment (20k) of the wall (20) vertically downwards toward the bottom, the opening (40) extends in a profile with more than 70% of its cross-section in the upper half , adjacent to the free end segment (20k) of the wall (20).
- Impact pad according to claim 1, wherein the opening (40) features curved flanks (40f) in an area between the largest width (Bg) and the smallest width (Bk).
- Impact pad according to claim 1, wherein the opening (40) features curved flanks in relation to a central longitudinal axis of the opening (40) in the area between the largest width (Bg) and the smallest width (Bk).
- Impact pad according to claim 1, wherein the opening (40) ends with a distance to the bottom (10).
- Impact pad according to claim 4, wherein the inside (20i) of the wall (20), between the impact area (10p) of the bottom (10) and the opening (40), extends with a slope of < 90 degrees to the horizontal.
- Impact pad according to claim 4, wherein the opening (40) extends over at most 90% of the height (H) of the wall (20).
- Impact pad according to claim 1, wherein the opening (40) extends from the free end (20k) down to the bottom (10).
- Impact pad according to claim 1, wherein corresponding flanks (40f) of the opening (40) are arranged with increasing distance between the inside (20i) of the wall (20) and a corresponding outside (20s) of the wall 40).
- Impact pad according to claim 8, wherein the corresponding flanks (40f) of the opening (40) are curved in a direction towards the surrounding between an inside (20i) of the wall (20) and the corresponding outside (20s) of the wall (20).
- Impact pad according to claim 1 with four segments (20 a-d) of the wall (20), wherein neighbouring segments (20a-20b, 20b-20c, 20c-20d, 20d-20a) are substantially arranged at a right angle to each other.
- Impact pad according to claim 1, wherein the opening (40) is arranged mirror-inverted to a plane, which sticks out vertically from the inside (20i) of the wall (20).
- Impact pad according to claim 1, wherein the upper free end (20k) of the wall (20) is widened towards the inside.
Priority Applications (23)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10007442.6A EP2418032B2 (en) | 2010-07-19 | 2010-07-19 | Flame-retardant ceramic impact absorber |
PL10007442T PL2418032T5 (en) | 2010-07-19 | 2010-07-19 | Flame-retardant ceramic impact absorber |
ES10007442.6T ES2398511T5 (en) | 2010-07-19 | 2010-07-19 | Ceramic fireproof impact bucket |
SI201030133T SI2418032T1 (en) | 2010-07-19 | 2010-07-19 | Flame-retardant ceramic impact absorber |
SI201030133A SI2418032T2 (en) | 2010-07-19 | 2010-07-19 | Flame-retardant ceramic impact absorber |
CN201180012751.XA CN102917817B (en) | 2010-07-19 | 2011-07-01 | Fireproof ceramic impact absorber |
NZ601837A NZ601837A (en) | 2010-07-19 | 2011-07-01 | Fireproof ceramic impact pad |
JP2013520039A JP5833650B2 (en) | 2010-07-19 | 2011-07-01 | Ceramic fireproof impact pad |
PCT/EP2011/061119 WO2012010399A1 (en) | 2010-07-19 | 2011-07-01 | Fireproof ceramic impact absorber |
BR112012022297A BR112012022297B8 (en) | 2010-07-19 | 2011-07-01 | fireproof ceramic impact absorber. |
MA35493A MA34334B1 (en) | 2010-07-19 | 2011-07-01 | IMPACT POT IN REFRACTORY CERAMIC |
MYPI2012005014 MY150991A (en) | 2010-07-19 | 2011-07-01 | Fireproof ceramic impact pad |
EA201201479A EA022036B1 (en) | 2010-07-19 | 2011-07-01 | Fireproof ceramic impact absorber |
SG2012088860A SG186701A1 (en) | 2010-07-19 | 2011-07-01 | Fireproof ceramic impact pad |
US13/581,590 US8894922B2 (en) | 2010-07-19 | 2011-07-01 | Fireproof ceramic impact pad |
AU2011281821A AU2011281821B2 (en) | 2010-07-19 | 2011-07-01 | Fireproof ceramic impact absorber |
UAA201210422A UA103722C2 (en) | 2010-07-19 | 2011-07-01 | Fireproof ceramic impact absorber |
MX2012009791A MX335957B (en) | 2010-07-19 | 2011-07-01 | Fireproof ceramic impact absorber. |
RU2012137689/02A RU2012137689A (en) | 2010-07-19 | 2011-07-01 | FIRE RESISTANT CERAMIC SHOCK-ABSORBING GLASS |
CA2790857A CA2790857C (en) | 2010-07-19 | 2011-07-01 | Fireproof ceramic impact pad |
ARP110102530A AR082176A1 (en) | 2010-07-19 | 2011-07-14 | CERAMIC REFRACTORY SHOCK ABSORBER |
CL2012003337A CL2012003337A1 (en) | 2010-07-19 | 2012-11-28 | An impact pad, ceramic, fireproof with the following characteristics in its functional position, a bottom with a lower base area and an upper impact surface, a wall, a wall segment that has an opening, where the opening it has the following cross-sectional profile, a larger width bg adjacent to the free end segment, a smaller width bk adjacent to the bottom, bg is more than 5% of the total perimeter of the pad wall. |
ZA2012/09113A ZA201209113B (en) | 2010-07-19 | 2012-12-02 | Fireproof ceramic impact absorber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10007442.6A EP2418032B2 (en) | 2010-07-19 | 2010-07-19 | Flame-retardant ceramic impact absorber |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2418032A1 EP2418032A1 (en) | 2012-02-15 |
EP2418032B1 EP2418032B1 (en) | 2012-11-21 |
EP2418032B2 true EP2418032B2 (en) | 2016-04-06 |
Family
ID=43088391
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10007442.6A Active EP2418032B2 (en) | 2010-07-19 | 2010-07-19 | Flame-retardant ceramic impact absorber |
Country Status (22)
Country | Link |
---|---|
US (1) | US8894922B2 (en) |
EP (1) | EP2418032B2 (en) |
JP (1) | JP5833650B2 (en) |
CN (1) | CN102917817B (en) |
AR (1) | AR082176A1 (en) |
AU (1) | AU2011281821B2 (en) |
BR (1) | BR112012022297B8 (en) |
CA (1) | CA2790857C (en) |
CL (1) | CL2012003337A1 (en) |
EA (1) | EA022036B1 (en) |
ES (1) | ES2398511T5 (en) |
MA (1) | MA34334B1 (en) |
MX (1) | MX335957B (en) |
MY (1) | MY150991A (en) |
NZ (1) | NZ601837A (en) |
PL (1) | PL2418032T5 (en) |
RU (1) | RU2012137689A (en) |
SG (1) | SG186701A1 (en) |
SI (2) | SI2418032T2 (en) |
UA (1) | UA103722C2 (en) |
WO (1) | WO2012010399A1 (en) |
ZA (1) | ZA201209113B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2537609A1 (en) | 2011-06-23 | 2012-12-26 | Calderys Ukraine Ltd. | Metal-flow impact pad and diffuser for tundish |
ES2570867T3 (en) * | 2013-10-22 | 2016-05-20 | Refractory Intellectual Property Gmbh & Co Kg | Fireproof Ceramic Impact Plate |
CN111451489A (en) * | 2020-05-29 | 2020-07-28 | 南京钢铁股份有限公司 | Flow guiding impact pad |
TW202415468A (en) | 2022-07-28 | 2024-04-16 | 奧地利商防火技術智慧財產有限兩合公司 | Impact pot with vertical and horizontal barriers |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2873361Y (en) † | 2006-02-28 | 2007-02-28 | 王有志 | Continuous middle ladle punching groove |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4776570A (en) * | 1987-07-08 | 1988-10-11 | Sidbec Dosco Inc. | Ladle stream breaker |
US5188796A (en) * | 1990-05-29 | 1993-02-23 | Magneco/Metrel, Inc. | Tundish impact pad |
US5358551A (en) | 1993-11-16 | 1994-10-25 | Ccpi, Inc. | Turbulence inhibiting tundish and impact pad and method of using |
GB9607556D0 (en) * | 1996-04-11 | 1996-06-12 | Foseco Int | Tundish impact pad |
GB9913241D0 (en) * | 1999-06-08 | 1999-08-04 | Foseco Int | Impact pad for tundish |
US7004227B2 (en) * | 2001-05-22 | 2006-02-28 | Vesuvius Crucible Company | Impact pad for dividing and distributing liquid metal flow |
DE10202537C1 (en) | 2002-01-24 | 2003-01-23 | Intocast Ag Feuerfestprodukte | Metallurgical vessel used as a tundish having a determined baffle head comprises a plate-like base having an inner chamber formed on the base with a wall |
ZA200206261B (en) * | 2002-03-28 | 2003-04-07 | Foseco Int | Metallurgical impact pad. |
DE10235867B3 (en) | 2002-08-05 | 2004-04-08 | Refractory Intellectual Property Gmbh & Co.Kg | Refractory ceramic component |
JP4023289B2 (en) * | 2002-11-05 | 2007-12-19 | Jfeスチール株式会社 | Manufacturing method of high cleanliness steel slab by continuous casting |
DE10257395A1 (en) * | 2002-12-06 | 2004-06-24 | Weerulin Feuerfeste Produkte Gmbh & Co. Kg | Tundish fabricated of incombustible material has perforated steel cover protecting surrounding holding vessel from the impact of incoming molten metal |
US20090050285A1 (en) * | 2007-08-20 | 2009-02-26 | North American Refractories Company | Impact pad |
CN201376085Y (en) * | 2009-04-21 | 2010-01-06 | 陈红良 | Tundish dual effect flow-stabilizing cushion |
BRPI1002628A2 (en) * | 2010-07-27 | 2012-03-27 | Magnesita Refratarios S A | turbulence reducer for use in continuous casting steel distributors |
-
2010
- 2010-07-19 ES ES10007442.6T patent/ES2398511T5/en active Active
- 2010-07-19 SI SI201030133A patent/SI2418032T2/en unknown
- 2010-07-19 EP EP10007442.6A patent/EP2418032B2/en active Active
- 2010-07-19 PL PL10007442T patent/PL2418032T5/en unknown
- 2010-07-19 SI SI201030133T patent/SI2418032T1/en unknown
-
2011
- 2011-07-01 SG SG2012088860A patent/SG186701A1/en unknown
- 2011-07-01 CA CA2790857A patent/CA2790857C/en active Active
- 2011-07-01 RU RU2012137689/02A patent/RU2012137689A/en not_active Application Discontinuation
- 2011-07-01 JP JP2013520039A patent/JP5833650B2/en not_active Expired - Fee Related
- 2011-07-01 MX MX2012009791A patent/MX335957B/en unknown
- 2011-07-01 BR BR112012022297A patent/BR112012022297B8/en not_active IP Right Cessation
- 2011-07-01 EA EA201201479A patent/EA022036B1/en not_active IP Right Cessation
- 2011-07-01 MY MYPI2012005014 patent/MY150991A/en unknown
- 2011-07-01 UA UAA201210422A patent/UA103722C2/en unknown
- 2011-07-01 AU AU2011281821A patent/AU2011281821B2/en not_active Ceased
- 2011-07-01 WO PCT/EP2011/061119 patent/WO2012010399A1/en active Application Filing
- 2011-07-01 MA MA35493A patent/MA34334B1/en unknown
- 2011-07-01 US US13/581,590 patent/US8894922B2/en active Active
- 2011-07-01 NZ NZ601837A patent/NZ601837A/en not_active IP Right Cessation
- 2011-07-01 CN CN201180012751.XA patent/CN102917817B/en active Active
- 2011-07-14 AR ARP110102530A patent/AR082176A1/en active IP Right Grant
-
2012
- 2012-11-28 CL CL2012003337A patent/CL2012003337A1/en unknown
- 2012-12-02 ZA ZA2012/09113A patent/ZA201209113B/en unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2873361Y (en) † | 2006-02-28 | 2007-02-28 | 王有志 | Continuous middle ladle punching groove |
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2418032B2 (en) | Flame-retardant ceramic impact absorber | |
EP2971385B1 (en) | Flow regulator having baffle with ring-like walls | |
DE69602565T2 (en) | Immersion spout for introducing molten metal into a continuous casting mold | |
DE69514956T2 (en) | Immersion pipe for continuous casting | |
DE2240643A1 (en) | METHOD AND DEVICE FOR SHAPING A MELT STREAM FLOWING FROM A TAP HOLE | |
DE60310387T2 (en) | METALLURGICAL PLATE | |
DE2037571C3 (en) | Verrieselungsdiise for cooling towers | |
EP2978545B1 (en) | Cooling section with lower spray bar | |
DE2442915A1 (en) | POUR PIPE WITH CLOSED BOTTOM AND OPPOSITE LATERAL OPENINGS | |
DE2417512B2 (en) | INSERTING DEVICE FOR INSERTING STEEL INTO THE CASTING HEAD OF A CONTINUOUS CASTING CLOUD | |
DE10015597A1 (en) | Floor element for a device for treating particulate material | |
DE10235867B3 (en) | Refractory ceramic component | |
AT526023B1 (en) | Continuous steel casting plant | |
WO2007090375A2 (en) | Pouring crucible for receiving a molten metal flowing from a pouring ladle | |
DE2854144A1 (en) | DEVICE FOR HORIZONTAL CONTINUOUS CASTING | |
EP2355946B1 (en) | Immersion nozzle | |
EP3320266B1 (en) | Metal heat shield element with an optimized cooling air function | |
AT516150B1 (en) | CYLINDER HEAD OF AN INTERNAL COMBUSTION ENGINE | |
DE10115097A1 (en) | Device for preventing a vortex effect in the outlet area of a metallurgical melting vessel | |
DE102014117021B3 (en) | Casting nozzle, casting wheel and arrangement comprising a casting wheel and at least one casting nozzle | |
DE3520783C2 (en) | ||
DE102004011883B4 (en) | Impact plate for a casting vessel for casting metallic melts, pouring vessel and device for casting molten metal | |
DE102016113252A1 (en) | Insert body for protecting the impact surface of a pouring stream in a metallurgical vessel | |
EP1955794A1 (en) | Fixture units for distribution tanks | |
DE102007044126A1 (en) | Fireproof ceramic hole stone |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
17P | Request for examination filed |
Effective date: 20110309 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME RS |
|
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 |
|
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): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
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: CH Ref legal event code: NV Representative=s name: HANS RUDOLF GACHNANG PATENTANWALT, CH |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 584777 Country of ref document: AT Kind code of ref document: T Effective date: 20121215 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502010001658 Country of ref document: DE Effective date: 20130117 |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
REG | Reference to a national code |
Ref country code: RO Ref legal event code: EPE |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2398511 Country of ref document: ES Kind code of ref document: T3 Effective date: 20130319 |
|
REG | Reference to a national code |
Ref country code: NO Ref legal event code: T2 Effective date: 20121121 |
|
REG | Reference to a national code |
Ref country code: PL Ref legal event code: T3 Ref country code: GR Ref legal event code: EP Ref document number: 20130400138 Country of ref document: GR Effective date: 20130225 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: VDEP Effective date: 20121121 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HR 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: 20121121 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: 20121121 Ref country code: LT 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: 20121121 |
|
REG | Reference to a national code |
Ref country code: SK Ref legal event code: T3 Ref document number: E 13512 Country of ref document: SK |
|
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: 20130321 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20121121 Ref country code: EE 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: 20121121 |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20121121 |
|
26 | Opposition filed |
Opponent name: VESUVIUS GROUP S.A. Effective date: 20130808 |
|
PLAX | Notice of opposition and request to file observation + time limit sent |
Free format text: ORIGINAL CODE: EPIDOSNOBS2 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R026 Ref document number: 502010001658 Country of ref document: DE Effective date: 20130808 |
|
REG | Reference to a national code |
Ref country code: HU Ref legal event code: AG4A Ref document number: E017513 Country of ref document: HU |
|
PLAF | Information modified related to communication of a notice of opposition and request to file observations + time limit |
Free format text: ORIGINAL CODE: EPIDOSCOBS2 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20121121 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: GACHNANG AG PATENTANWAELTE, CH |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PLBB | Reply of patent proprietor to notice(s) of opposition received |
Free format text: ORIGINAL CODE: EPIDOSNOBS3 |
|
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 NON-PAYMENT OF DUE FEES Effective date: 20130719 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM 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: 20121121 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT 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: 20121121 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: 20121121 |
|
PLAB | Opposition data, opponent's data or that of the opponent's representative modified |
Free format text: ORIGINAL CODE: 0009299OPPO |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 6 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK 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: 20121121 |
|
R26 | Opposition filed (corrected) |
Opponent name: VESUVIUS GROUP S.A. Effective date: 20130808 |
|
APBM | Appeal reference recorded |
Free format text: ORIGINAL CODE: EPIDOSNREFNO |
|
APBP | Date of receipt of notice of appeal recorded |
Free format text: ORIGINAL CODE: EPIDOSNNOA2O |
|
APAH | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNO |
|
APBU | Appeal procedure closed |
Free format text: ORIGINAL CODE: EPIDOSNNOA9O |
|
PUAH | Patent maintained in amended form |
Free format text: ORIGINAL CODE: 0009272 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT MAINTAINED AS AMENDED |
|
27A | Patent maintained in amended form |
Effective date: 20160406 |
|
AK | Designated contracting states |
Kind code of ref document: B2 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R102 Ref document number: 502010001658 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: AELC |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: DC2A Ref document number: 2398511 Country of ref document: ES Kind code of ref document: T5 Effective date: 20160429 |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: RPEO |
|
REG | Reference to a national code |
Ref country code: SK Ref legal event code: T5 Ref document number: E 13512 Country of ref document: SK |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS 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: 20121121 |
|
REG | Reference to a national code |
Ref country code: NO Ref legal event code: TB2 |
|
REG | Reference to a national code |
Ref country code: GR Ref legal event code: EP Ref document number: 20160400740 Country of ref document: GR Effective date: 20160601 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 8 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL 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: 20121121 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LV Payment date: 20220721 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LU Payment date: 20230719 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: TR Payment date: 20230717 Year of fee payment: 14 Ref country code: RO Payment date: 20230711 Year of fee payment: 14 Ref country code: NO Payment date: 20230721 Year of fee payment: 14 Ref country code: IT Payment date: 20230724 Year of fee payment: 14 Ref country code: GB Payment date: 20230720 Year of fee payment: 14 Ref country code: ES Payment date: 20230926 Year of fee payment: 14 Ref country code: CZ Payment date: 20230711 Year of fee payment: 14 Ref country code: CH Payment date: 20230801 Year of fee payment: 14 Ref country code: BG Payment date: 20230719 Year of fee payment: 14 Ref country code: AT Payment date: 20230720 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SK Payment date: 20230710 Year of fee payment: 14 Ref country code: SI Payment date: 20230706 Year of fee payment: 14 Ref country code: SE Payment date: 20230719 Year of fee payment: 14 Ref country code: PL Payment date: 20230707 Year of fee payment: 14 Ref country code: HU Payment date: 20230721 Year of fee payment: 14 Ref country code: GR Payment date: 20230721 Year of fee payment: 14 Ref country code: FR Payment date: 20230725 Year of fee payment: 14 Ref country code: DE Payment date: 20230719 Year of fee payment: 14 Ref country code: BE Payment date: 20230719 Year of fee payment: 14 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PK Free format text: BERICHTIGUNGEN |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LV Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230719 |