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WO2009013014A1 - Cuve d'amortissement - Google Patents

Cuve d'amortissement Download PDF

Info

Publication number
WO2009013014A1
WO2009013014A1 PCT/EP2008/006163 EP2008006163W WO2009013014A1 WO 2009013014 A1 WO2009013014 A1 WO 2009013014A1 EP 2008006163 W EP2008006163 W EP 2008006163W WO 2009013014 A1 WO2009013014 A1 WO 2009013014A1
Authority
WO
WIPO (PCT)
Prior art keywords
projections
baffle
recesses
wall
bottom plate
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.)
Ceased
Application number
PCT/EP2008/006163
Other languages
German (de)
English (en)
Other versions
WO2009013014A8 (fr
Inventor
Günter Böcking
Andreas Viertauer
Peter Schrader
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pa-He-Ge Feuerfeste Erzeugnisse & Co KG GmbH
Original Assignee
Pa-He-Ge Feuerfeste Erzeugnisse & Co KG GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pa-He-Ge Feuerfeste Erzeugnisse & Co KG GmbH filed Critical Pa-He-Ge Feuerfeste Erzeugnisse & Co KG GmbH
Priority to BRPI0813834-6A2A priority Critical patent/BRPI0813834A2/pt
Publication of WO2009013014A1 publication Critical patent/WO2009013014A1/fr
Anticipated expiration legal-status Critical
Publication of WO2009013014A8 publication Critical patent/WO2009013014A8/fr
Ceased legal-status Critical Current

Links

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 present invention relates to a baffle with the features of the preamble of claim 1.
  • Impact pots are used in metallurgy when pouring molten metals from a ladle into an intermediate container.
  • the liquid metal in a ladle is subjected to a metallurgical treatment. After completion of the treatment, the melt is then filled from the pan into an intermediate container, a so-called distributor (tundish). Due to the height difference between the pan and the bottom of the intermediate container, the high density of the molten metal and the low viscosity of the molten metal, the jet has a high kinetic energy. Jerky rapid opening of the pan slide releases the opening and the statically stationary steel column is then poured into the distributor through the pan slider.
  • baffles or baffles are usually inserted into the intermediate container before the casting process, which are intended to reduce the turbulence at the first moment of the casting process and to protect the lining against the kinetic energy of the liquid melt.
  • baffles are known from the prior art, for example from the publications EP0729393 Bl, EP0790873 Bl and EP1526940 Bl.
  • the floors and walls are substantially smooth.
  • the function is to be achieved by a deflection of the jet of liquid melt in such a way that the deflected jet coincides with the incoming jet and that thereby energy is consumed.
  • the desired function depends on a very accurate positioning of the ladle and the baffle at the beginning of the casting process. Any deviation from the intended relative orientation leads to a disturbance of the desired flow conditions. The exact positioning of the ladle outlet centric to the "baffle" is not possible due to the inertia (turret and steel ladle with content).
  • a plate which is used at the bottom of a tundish.
  • the plate is arranged horizontally in the casting operation and smooth in the middle. It has at its outer periphery about cube-shaped, upwardly facing projections, which should divide the incoming pouring stream into partial streams.
  • This plate has no outer, upwardly facing circumferential wall on.
  • the published patent application DE 2643009 A1 shows an insert body in the manner of a grid, which can be laid on the bottom of a tundish.
  • the rust is open to the bottom of the tundish. He has no circumferential wall.
  • a baffle which has a bottom and peripheral walls.
  • the floor and the walls are provided with a wavy or knob-like structure. This structure deflects the incoming pouring stream in different directions. However, the flowing liquid is resisted only to a slight extent by a resistance which reduces the kinetic energy.
  • a similar baffle which contains dome-shaped or pointed inserts.
  • the inserts point from the bottom of the baffle upwards, ie into the interior.
  • the surrounding wall is smooth. It is expected that this design leads to a distribution of the incoming pouring stream on the ground. However, the design opposes the jet little flow resistance, so that the kinetic energy is not significantly reduced, especially in the wall area.
  • US 6929775 B2 shows a baffle with circumferential ribs at the bottom and an upwardly opening approximately conical wall. The wall is provided with dome-shaped elevations or depressions. These recesses are designed to catch splashes at the beginning of the casting process and to divert in different directions. The flow of the pouring stream directed upward in the area of the wall is set against only little flow resistance, so that the kinetic energy of the pouring stream is only slightly influenced even with this impact pot.
  • the side wall of the baffle is disposed at an angle of 90 ° to the plane of the floor and because the side wall, the floor or both surfaces carry a surface structure in the form of projections, apertures or recesses whose surfaces are substantially either at an angle of 90 ° to the plane of the ground or parallel to the plane of the bottom, the molten metal receives when hitting the projections, openings or recesses virtually no velocity component, which counteracts the incoming jet.
  • the incoming beam therefore does not or does not significantly participate in the desired dynamic process in the baffle.
  • the vertical walls further allow a consistently uniform opening cross section of the baffle pot upwards, which allows a free and smooth outlet of the molten metal from the baffle. This also applies to non-centric arrangement of the steel beam.
  • a simpler shape results when the surface structure is formed only on a part of the inner surface of the side wall and / or the bottom. So it may be sufficient, only the side wall with a few, a total of about five to ten horizontally oriented rows of projections or recesses to provide.
  • melt will soon enter the distributor at the beginning of the casting process. This can lead to a calmer course of the casting process, especially at the moment in which the baffle head overflows, because then the overflowing material does not hit the ground, but already existing melt.
  • Figure 1 a baffle according to the invention with a bottom structure and a wall structure in a cross section in a perspective view;
  • Figure 2 the baffle pot of Figure 1 in a side view in cross section
  • FIG 3 the baffle pot of Figure 1 and Figure 2 in a plan view
  • Figure 4 a wall projection in a cross section from the side
  • Figure 5 a wall projection in a plan view
  • Figure 6 a bottom projection in a cross section from the side; such as
  • Figure 7 a bottom projection in a plan view.
  • a baffle pot is shown in perspective in a cross section.
  • the baffle has a circular, substantially flat bottom plate 1.
  • the bottom plate carries near its outer periphery a cylinder jacket-shaped wall 2, which is aligned with respect to the plane of the bottom plate 1 at an angle of 90 °.
  • the wall 2 has an outer smooth outer surface 3 and one of the bottom plate. 1 opposite upper end face 4.
  • the front side 4 is also smooth and has the geometric shape of a flat ring which is parallel to the plane of the bottom plate 1.
  • the upper side 4 of the wall 2 is therefore oriented at an angle of 90 ° relative to the lateral surface 3.
  • the upper side 4 surrounds an opening which closes an inner space 6 defined by the base plate 1 and the wall 2 upwards.
  • the bottom plate 1 has a number of projections 7 within the surface 14 enclosed by the wall 2.
  • the projections 7 are formed frusto-conical, wherein the larger-diameter end is integrally connected to the bottom plate 1, while the smaller-diameter end of the opening faces.
  • the frustoconical projections 7 are rotationally symmetrical and aligned with their axis of symmetry perpendicular to the plane of the bottom plate 1. They cover in this Austechnologyuaysä example close to the entire surface 14 of the bottom plate 1, as far as it lies within the wall 2.
  • the wall 2 also carries a plurality of projections 8 on its inner surface 5 facing the inner space 6.
  • the projections 8 point radially inward from the wall 2.
  • Each individual projection 8 is formed in this embodiment as a trapezoidal prism.
  • the projection 8 has an integrally connected to the wall 2 base with a rectangular cross-section.
  • a top 9 and a bottom 10 of the projection 8 are trapezoidal, flat and aligned with respect to the plane of the bottom plate 1 parallel to this plane.
  • Side surfaces 11 and 12 are rectangular.
  • the side surfaces 11 and 12 are perpendicular to the plane of the bottom plate 1 and in their respective transition point to the inner wall 5 of the wall 2 also perpendicular to the surface 5.
  • an end face 13 is provided which is free in the interior. 6 protrudes.
  • the end face IJ is aligned essentially flat and parallel to the surface 5 of the wall 2.
  • the projections may also be formed with rounded edges or inclined surfaces.
  • the baffle pot of Figure 1 is made in one piece from a refractory material in a known manner.
  • FIG. 2 shows the baffle pot from FIG. 1 in a cross-section from the side. Same components bear the same reference numbers. On the labeling of the individual surfaces of the projections 8 was omitted to better overview of the part.
  • FIG. 3 shows a baffle pot according to FIG. 1 and FIG. 2 in a top view in a broken view.
  • the trapezoidal prisms of the projections 8 are trapezoidal in plan view of the top 9 and that they face the center of the circular bottom plate 1 in the manner of an internal toothing.
  • FIG. 4 shows a projection 8 in a cross-section from the side. Visible is the vertical wall 5, which is integrally formed under the projection 8.
  • the upper side 9 and the lower side 10 each form an oriented at right angles to the wall 5 surface, which is thus due to the also rectangular orientation of the wall 5 parallel to the bottom plate 1.
  • the interior 6 facing end face 13 is in turn aligned parallel to the wall 5.
  • FIG. 5 shows the projection 8 from FIG. 4 in a plan view.
  • the parallel to the plane of the bottom plate 1 aligned, trapezoidal top 9 of the projection 8 is visible.
  • the side surfaces 11 and 12 and the end face 13 define the trapezoidal top 11.
  • the area in which the projection 8 is integrally connected to the side wall 2 is shown in dashed lines.
  • FIG. 6 shows a bottom-side projection 7 in a cross-section from the side.
  • the projection 7 is integrally formed on the bottom plate 1.
  • Br has a frusto-conical shape with an outer peripheral surface 15 and a circular upper surface 16.
  • the projection 7 rises vertically and rotationally symmetrical about the bottom plate 1 in the interior 6 of the baffle inside.
  • FIG. 7 shows only schematically the projection 7 in a plan view perpendicular to the base plate 1.
  • the baffle pot described so far is made entirely of refractory material.
  • the dimensions can be varied depending on the application.
  • the orientation of the described surfaces 9 and 11, 11 and 12 and 13 is then adjusted accordingly. However, the orientation of the surfaces perpendicular or parallel to the bottom plate 1 ble.iht essentially the same.
  • a typical baffle of the construction illustrated in Figure 1 has a diameter of about 70 cm.
  • the height perpendicular to the bottom plate 1 is about 35 cm. This results in an internal volume of about 55 1.
  • the projections 8 have a height of 10 mm in the vertical direction.
  • the trapezoidal surfaces 9 and 10 are provided adjacent to the inner wall 5 with an edge length of 15 mm.
  • the edge length adjacent to the free-standing surface 13 is 10 mm.
  • the surface 13 is therefore square.
  • the bottom-side projections 7 have a diameter in the base circle of about 17 mm, while the upper boundary surface has a diameter of 10 mm.
  • the height of the projections 7 is also about 10 mm.
  • the wall-side projections 8 are, as shown in Figure 2, respectively in horizontal and vertical rows, that is arranged in rows and columns. The columns are aligned parallel to each other. In the row direction, ie in Circumferential direction of the wall surface, two successive projections a are offset from each other by 50% of their vertical distance. The projections 8 are therefore arranged circumferentially "on the gap.” This arrangement is presently preferred, but other patterns are also known in the art
  • the elaborate in the present example design of the inner surfaces of the baffle can be made simpler even with substantially the same good function.
  • a smaller number of projections or recesses may be arranged completely circumferentially on the wall, but only in 3 to 4 or 5 to 10 rows, while the present embodiment has 17 rows.
  • the smaller number of lines can be arranged at half the height of the wall 2 or in the immediately adjacent to the bottom plate 1 area.
  • Adaptation to other tundish geometries can also be made.
  • a shape with a rectangular or trapezoidal base plate and a correspondingly formed interior 6 is provided deviating from the circular shape shown in this embodiment.
  • the ratio of diameter to height can also be chosen according to the requirements.
  • both the side wall and the bottom are provided with projections, they may also be formed on only one of the two surfaces, if the application permits.
  • the surface structure shown in the embodiment is currently preferred because of their ease of manufacture. If according to an alternative embodiment, not projections but recesses are provided on the boundary walls, there is practically a negative form of the illustrated surface structure, which also has the desired effect can achieve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cookers (AREA)
  • Vibration Dampers (AREA)
  • Building Environments (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

L'invention concerne une cuve d'amortissement destinée à des applications métallurgiques, réalisée en matériau réfractaire, présentant une plaque de base (1) et une paroi (2) orientée perpendiculairement à la plaque de base (1), renfermant ensemble un espace intérieur (6). La paroi (2) présente une surface (5) orientée vers l'espace intérieur, et la plaque de base (1) présente un côté supérieur (14) orienté vers l'espace intérieur (6). La surface (5) porte des saillies (8) orientées vers l'espace intérieur (6), présentant respectivement des surfaces latérales (11, 12), au moins un côté supérieur (9), au moins un côté inférieur (10) et au moins un côté frontal (13), les surfaces latérales (11, 12) et le côté frontal (13) étant respectivement orientés perpendiculairement à la plaque de base, et le côté supérieur (9) et le côté inférieur (10) étant orientés parallèlement à la plaque de base (1).
PCT/EP2008/006163 2007-07-26 2008-07-25 Cuve d'amortissement Ceased WO2009013014A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BRPI0813834-6A2A BRPI0813834A2 (pt) 2007-07-26 2008-07-25 Absorvedor de impacto

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710035452 DE102007035452B4 (de) 2007-07-26 2007-07-26 Pralltopf
DE102007035452.7 2007-07-26

Publications (2)

Publication Number Publication Date
WO2009013014A1 true WO2009013014A1 (fr) 2009-01-29
WO2009013014A8 WO2009013014A8 (fr) 2010-04-22

Family

ID=39876776

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/006163 Ceased WO2009013014A1 (fr) 2007-07-26 2008-07-25 Cuve d'amortissement

Country Status (4)

Country Link
BR (1) BRPI0813834A2 (fr)
DE (1) DE102007035452B4 (fr)
RU (1) RU2010107045A (fr)
WO (1) WO2009013014A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4285063A1 (fr) * 2021-01-28 2023-12-06 Resco Products, Inc. Structure annulaire réfractaire et procédé associé

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI1002628A2 (pt) * 2010-07-27 2012-03-27 Magnesita Refratarios S A redutor de turbulência para uso em distribuidores de aço de lingotamento contìnuo
CA3139176C (fr) 2020-12-04 2024-07-02 Refractory Intellectual Property Gmbh & Co Kg Bague refractaire et systeme et methodes de bague refractaire aux fins d'assemblagee
TW202415468A (zh) * 2022-07-28 2024-04-16 奧地利商防火技術智慧財產有限兩合公司 具有垂直及水平阻體的衝擊匣缽
DE102024110531A1 (de) * 2024-04-15 2025-10-16 PAHAGE Feuerfeste Erzeugnisse GmbH & Co.KG. Pralltopf mit Strömungsführung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB754573A (en) * 1953-04-29 1956-08-08 Henri Jean Daussan Fitting for ingot moulds and other moulds
US4776570A (en) * 1987-07-08 1988-10-11 Sidbec Dosco Inc. Ladle stream breaker
EP0463257A1 (fr) * 1990-05-29 1992-01-02 Magneco/Metrel, Inc. Dalle d'impact pour récipient intermédiaire
US20040041312A1 (en) * 2002-09-04 2004-03-04 Connors Charles W Tundish impact pad
FR2846264A3 (fr) * 2002-10-29 2004-04-30 Tisirsa S L Perfectionnement a une digue d'impact

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2643009A1 (de) * 1976-09-24 1978-03-30 Odermath Gmbh Heinrich Einlegekoerper zum schutz der aufprallflaeche eines giesstrahls in einem metallurgischen gefaess
US5358551A (en) * 1993-11-16 1994-10-25 Ccpi, Inc. Turbulence inhibiting tundish and impact pad and method of using
ATE166814T1 (de) * 1994-11-09 1998-06-15 Foseco Int Prallplatte für zwischengefass
DE10235867B3 (de) * 2002-08-05 2004-04-08 Refractory Intellectual Property Gmbh & Co.Kg Feuerfestes keramisches Bauteil
DE102004011883B4 (de) * 2004-03-11 2005-12-08 Thyssenkrupp Stahl Ag Prallplatte für ein Gießgefäß zum Vergießen von metallischen Schmelzen, Gießgefäß und Vorrichtung zum Vergießen von Metallschmelzen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB754573A (en) * 1953-04-29 1956-08-08 Henri Jean Daussan Fitting for ingot moulds and other moulds
US4776570A (en) * 1987-07-08 1988-10-11 Sidbec Dosco Inc. Ladle stream breaker
EP0463257A1 (fr) * 1990-05-29 1992-01-02 Magneco/Metrel, Inc. Dalle d'impact pour récipient intermédiaire
US20040041312A1 (en) * 2002-09-04 2004-03-04 Connors Charles W Tundish impact pad
FR2846264A3 (fr) * 2002-10-29 2004-04-30 Tisirsa S L Perfectionnement a une digue d'impact

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4285063A1 (fr) * 2021-01-28 2023-12-06 Resco Products, Inc. Structure annulaire réfractaire et procédé associé

Also Published As

Publication number Publication date
WO2009013014A8 (fr) 2010-04-22
DE102007035452B4 (de) 2013-02-21
RU2010107045A (ru) 2011-09-10
BRPI0813834A2 (pt) 2015-01-06
DE102007035452A1 (de) 2009-01-29

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