EP1476262B1 - Cylindre de coulee et procede de production d'un cylindre de coulee - Google Patents

Cylindre de coulee et procede de production d'un cylindre de coulee Download PDF

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Publication number
EP1476262B1
EP1476262B1 EP02793061A EP02793061A EP1476262B1 EP 1476262 B1 EP1476262 B1 EP 1476262B1 EP 02793061 A EP02793061 A EP 02793061A EP 02793061 A EP02793061 A EP 02793061A EP 1476262 B1 EP1476262 B1 EP 1476262B1
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EP
European Patent Office
Prior art keywords
roll
casting
lateral surface
core
lateral
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.)
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EP02793061A
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German (de)
English (en)
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EP1476262A2 (fr
Inventor
Gerald Hohenbichler
Gerald Eckerstorfer
Thomas Reiter
Jean-Michel Damasse
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Primetals Technologies Austria GmbH
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Voest Alpine Industrienlagenbau GmbH
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Priority to AT02793061T priority Critical patent/ATE331578T1/de
Publication of EP1476262A2 publication Critical patent/EP1476262A2/fr
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Publication of EP1476262B1 publication Critical patent/EP1476262B1/fr
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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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • 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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/0648—Casting surfaces
    • B22D11/0651—Casting wheels

Definitions

  • the invention relates to a casting roll for the continuous casting of thin metallic strips, in particular steel strips, in a two-roll or Einwalzeng tellstrom, with a roll core having an outer surface and a surrounding, shrunk, annular roll shell with an inner circumferential surface and with a central casting roll axis, and a method for producing such a casting roll.
  • Casting rolls of this type are used for producing metal strip with a strip thickness of up to 10 mm, wherein liquid metal is applied to the casting roll surface of at least one casting roll where it is at least partially solidified and shaped into the desired strip format. If the molten metal is predominantly applied to a casting roll, this is called single-roll casting. If the molten metal is introduced into a casting gap, which is formed by two spaced-apart casting rolls, wherein the molten metal is solidified on the two casting roll surfaces and from these a metal strip is formed, it is called Zweiwalzeng veiclar. In these production methods, large amounts of heat have to be dissipated from the casting roll surface into the interior of the casting roll in a short time.
  • the casting roll is equipped with an outer roll shell of a particularly thermally conductive material, preferably copper or a copper alloy, and an internal cooling with a cooling water circuit.
  • a particularly thermally conductive material preferably copper or a copper alloy
  • an internal cooling with a cooling water circuit Such casting rolls are already described, for example, in US Pat. No. 5,191,925 or DE-C 41 30 202.
  • US Pat. No. 5,191,925 discloses a casting roll in which two annular roll shells are mounted on a roll core equipped with cooling channels and the two roll shells are joined together by a welded connection or a roll sheath is produced by electrolytic deposition on the other roll sheath.
  • a casting roll can be seen in which a connection between a roll core and a roll shell is prepared by brazing, wherein between the roll core and the roll shell prior to assembly a suitable solder, preferably in the form of a strip of this Solder, must be applied and fixed.
  • the roll mantle is drawn onto the roll core by a thermal shrinking process, thus achieving a temporary bond followed by the time-consuming brazing process.
  • a casting roll for a strip casting machine in which rods are inserted in axial grooves of the roll core between a roll core and a roll shell. These rods together with the roller core and the roll shell form a plurality of coolant channels. In order to ensure the cohesion of the components forms the inner roll shell surface with the radially outwardly facing surfaces of the rods used a shrink connection.
  • the proposed braze joint is not suitable in addition to the complex production in the occurring, locally high thermal loads, to prevent such migration of the roll shell sustainable.
  • At least one of the opposing a shrink joint forming lateral surfaces has elevations and depressions in the lateral surface, which are oriented at least partially in the direction of the casting roll axis and the radial extent is at least 2 ⁇ m and the elevations and depressions on at least one of the mutually opposite lateral surfaces form a surface structure in which the lateral surface has a roughness R z between 2 ⁇ m and 1500 ⁇ m, preferably between 10 ⁇ m and 500 ⁇ m.
  • the elevations and depressions on the lateral surface form support surfaces, which are predominantly oriented substantially parallel to the casting roll axis and having a radial minimum extent, produce an additional resistance to a traveling movement of the roll shell relative to the roll core in the circumferential direction.
  • support surfaces which are predominantly oriented substantially parallel to the casting roll axis and having a radial minimum extent, produce an additional resistance to a traveling movement of the roll shell relative to the roll core in the circumferential direction.
  • R z defined roughness
  • these elevations and depressions in and immediately around an axis-normal casting-roll plane of symmetry form on at least one of the mutually opposite lateral surfaces a surface structure in which the lateral surface has a roughness Rz between 2 ⁇ m and 1500 ⁇ m.
  • This effect is achieved in an optimum manner when the elevations and recesses substantially in the direction of the casting roll axis and directed radially with support surfaces form a longitudinal extension, which are smaller than or equal to the lateral surface length.
  • Such oriented support surfaces arise in an example mechanical machining of the lateral surface in the direction of the casting roll axis, such as by knurling.
  • the hereby adjusting approximately V-shaped groove formation on a lateral surface results in a firm connection with the further lateral surface, if the distance between the groove tips preferably between 0.1 and 1.7 mm and the distance between valley and tip between 0.06 and 0 , 8 lies.
  • the roll core and the annular roll shell are formed in the region of the opposite lateral surfaces made of materials of different hardness and at least the lateral surface of the component having the higher lateral surface hardness values is provided with the predetermined roughness.
  • the roughness pattern of the harder mantle surface is impressed into the softer mantle surface, resulting in a full-surface micro-mating fit which is clearly superior to the friction fit achievable in the conventional shrinking process.
  • a hardness difference between the edge layers in the region of the harder and the soft lateral surfaces should be at least 20%, but preferably more than 50%, the hardness of the softer lateral surface should be below 220 HB, preferably below 150 HB.
  • the steel roll core and the annular roll shell from copper or a copper alloy.
  • the formation of the roll core made of steel gives the cast roll construction the necessary operational stability and the formation of the roll mantle of copper or a copper alloy is absolutely necessary for a sufficient heat removal from the molten metal applied to it.
  • a bonding layer is preferably arranged between the roll core and the roll shell and the material forming the tie-layer on one of the two deposited associated with each other lateral surfaces.
  • the bonding layer consists of a metal or a metal alloy, wherein wear-resistant granules can be embedded in this bonding layer.
  • wear-resistant granules consist of grains or lamellae of metal oxides, such as aluminum oxide, zirconium oxide or similar materials or their mixtures.
  • the granules may also consist of grains or fins of carbides, such as titanium carbide, tungsten carbide, silicon carbide or similar materials with comparable properties or their mixtures. Mixtures of metal oxides and carbides are useful.
  • the connecting layer can also be formed by a very hard material, for example a plasma ceramic, wherein this material must be applied to one of the lateral surfaces such that the desired roughness also sets at the same time.
  • the bonding layer preferably has a layer thickness of 0.05 to 1.2 mm.
  • the wear-resistant granules embedded in them have a particle size of less than 40 ⁇ m, preferably less than 10 ⁇ m.
  • the roll core has grooves distributed parallel to the casting roll axis on its lateral surface, are inserted into the fuse strips, which project beyond the lateral surface of the roll core in the radial direction by at least 2 microns.
  • the over the lateral surface of the roll core protruding fuse strips press with the shrink connection in the lateral surface of the roll shell and form itself a support surface against the jacket twist and produce by their impression in the roll shell a counter-supported support surface in this.
  • these securing strips project beyond the lateral surface of the roller core no more than 1500 ⁇ m, since the possibilities of embossing in the roller shell are limited. If only by the pressing of the fuse strips in the roll shell a rich juxtaposition of the two lateral surfaces can not be achieved, it is preferably also possible to make shallow milled with shallow depth in the roll shell at the points that are opposite to the grooves in the roll core.
  • the securing strips project beyond the lateral surface of the roller core in the radial direction between 500 ⁇ m and 15 mm.
  • the securing strips are also in the inner circumferential surface of the roll mantle grooves milled, which lie opposite the grooves in the lateral surface of the roll core and wherein opposing grooves each receive a fuse strip.
  • the flanks of the securing strip and the flanks of the grooves form corresponding support surfaces oriented in the direction of the casting roll axis. A large-area shrinkage connection between the roll core and the roll shell is possible if the sum depth of two grooves is greater than the height of the fuse strip receiving them.
  • Typical groove depths are 2 to 15 mm in the roll core and 0.4 to 5 mm in the roll shell.
  • the width of the fuse strip is between 4 and 45 mm, preferably between 5 and 25 mm.
  • Usually less than 16, preferably less than 8 fuse strips or grooves are preferably distributed regularly distributed on the roll core at its periphery. At least 3 grooves are necessary for a sufficient rotation of the roll shell, if at the same time an uneven forces and stress distribution in the roll shell to be avoided.
  • the length of the grooves or the fuse strips is less than the lateral surface length of the roller core. Thus, the risk of slipping out of the fuse strips is avoided under operating load.
  • a casting roll which is suitable for the continuous casting of thin metallic strips, in particular steel strips, by the two-roll or Einwalzeng tellclar and consisting essentially of a roll core having an outer circumferential surface and a surrounding, shrunk, annular roll shell with an inner circumferential surface and a centric G manwalzenachse
  • the lateral surface of the roll core and the inner circumferential surface of the roll shell is prepared for a shrink connection and the roll shell is raised with respect to the roll core elevated temperature on the roll core.
  • the invention consists in that on at least one of the mutually associated jacket surfaces forming a shrink connection at least partially oriented in the direction of the casting roll axis elevations and depressions are produced with a radial extent of at least 2 ⁇ m by mechanical processing and on at least one of the mating surfaces produced mating surfaces and depressions form a surface structure in which the lateral surface has a roughness between 2 .mu.m and 1500 ⁇ m has. Subsequently, a controlled cooling of the casting roll takes place at room temperature.
  • the preparations for the formation of a shrink connection consist essentially in that a matched to the operating conditions of the casting roll fit selected and the roll core is made with a corresponding outer diameter and the roll shell with a corresponding inner diameter.
  • the feature essential to the invention consists in the design of one of the two cooperating lateral surfaces with a surface structure in the elevations and depressions form support surfaces, which are oriented substantially parallel to the casting roll axis and have a radial minimum extent to a corresponding resistance to a migration of the roll shell in the circumferential direction to ensure.
  • an oriented surface structure is incorporated in the lateral surface, which has a roughness R z between 10 .mu.m and 500 .mu.m.
  • the formation of a surface structure has proved to be particularly favorable, in which the elevations and depressions incorporated on at least one of the mutually associated lateral surfaces are produced with support surfaces oriented essentially radially and in the direction of the casting roll axis, which have a longitudinal extension which is less than or equal to Lateral surface length are.
  • the incorporated in one of the lateral surfaces oriented surface structure penetrates when producing the shrink connection with significantly reduced Abplattungstendenz in the surface of the mantle surface when the roll core and the annular roll shell are made of materials of different hardness and formed with a higher lateral surface hardness value component with the predetermined roughness R z is provided.
  • the hardness values of the component formed with a higher lateral surface hardness value can additionally be increased by hardening, nitriding, carburizing or a comparable method. This can be largely dispensed with adhesion-improving additional coating on one of the mating lateral surfaces.
  • the directional surface structure or the roughness Rz is produced in a simple manner by mechanical processing of the mantle surface, such as knurling, bumping or milling.
  • a correspondingly directed surface structure having a predetermined roughness can be produced in a simple manner, which is predominantly in the direction the casting roll axis oriented and a jacket twist counteracting support surfaces.
  • the bonding between the roll core and the roll shell can be further improved if a bonding layer is deposited on one of the mating surfaces, wherein the predetermined roughness is advantageously applied to one lateral surface and the bonding layer is applied in a layer thickness of 0.05 to 1.2 mm is deposited.
  • the compound layer of a metal or a metal alloy is preferably applied by electrodeposition or by plasma deposition on the lateral surface.
  • the granules already described above can be incorporated into the bonding layer.
  • a variant of the described method for producing a casting roll with a correspondingly stable rotation between the roll core and roll shell is prepared by the lateral surface of the roll core and the inner surface of the roll shell are prepared for a shrink connection, that incorporated on the lateral surface of the roll core parallel to the casting roll axis grooves and be used in these fuse strips, which projects beyond the lateral surface of the roll core in the radial direction at least 2 ⁇ m, preferably projecting from 500 microns to 15 mm, and that the roll jacket is mounted on the roll core with a temperature which is higher than that of the roll core, wherein a shrink connection is produced between the fuse bars and the roll shell and at least one tight connection between the roll core and the roll shell. Subsequently, a controlled cooling of the casting roll takes place at room temperature.
  • a casting roll according to the invention for the continuous casting of steel strips in a two-roll continuous casting is shown schematically in a partial section. It consists of a roller core 1 made of steel, which ends in roll neck 1 a, 1 b for support in G manwalzenlagern not shown.
  • a cylindrical roll shell 2 made of a copper alloy surrounds the roll core 1 and is fixed in rotation therewith by means of a shrink connection 3.
  • the shrink joint 3 is formed by the outer circumferential surface 4 of the roll core 2 and the inner circumferential surface 5 of the roll shell 2, wherein the two lateral surfaces 4 and 5 achieved by a directed surface structure increased compared to conventional shrink joints torsional resistance. Illustrated by way of example in FIG.
  • the lateral surface 4 is provided with a knurling 6, wherein the grooves 7 produced by the knurling are oriented in the direction of the casting roll axis 8 and form V-shaped support surfaces 9 extending substantially radially and in the direction of the casting roll axis 8, which act in large numbers as resistance surfaces against a relative rotation of the roll shell 2 to the roll core 1.
  • a metallic compound layer 10 is, for example, deposited electrolytically and forms a relatively soft, low hardness layer, in which the structured outer surface 4 of the roll core 1 in the manufacture of the shrink joint, without significantly altering its structure, penetrates.
  • the casting roll is provided with an internal circulating liquid cooling, wherein cooling liquid is supplied via a central supply line 11 and radial branch lines 12 to annular milled into the outer circumferential surface 4 of the roll core 1 coolant channels 13 and discharged via further radial stubs 14 and a central discharge line 15 again.
  • cooling liquid is supplied via a central supply line 11 and radial branch lines 12 to annular milled into the outer circumferential surface 4 of the roll core 1 coolant channels 13 and discharged via further radial stubs 14 and a central discharge line 15 again.
  • the casting roll is shown with a shrinkage connection 3 according to the invention according to a further embodiment in a cross section.
  • the roller core 1 is analogous as in Fig. 1 equipped with a coolant circuit, which consists of a central supply line 11, radial stub lines 12, radial stub lines 14 and a central discharge line 15.
  • the annular coolant channels 13 are rotated in the roll shell 2 in the embodiment shown in FIG.
  • Parallel to the casting roll axis 8 four grooves 7 are milled into the outer circumferential surface 4 of the roll core 1 and in each of these grooves 7 a fuse strip 17 is inserted, which projects beyond the outer surface 4 of the roll core 1 by a small piece.
  • 2 grooves 18 shallow depth are milled into the inner circumferential surface 5 of the roll shell, which lie opposite the grooves 7 in the roll core 1 and collect the fuse strips 17 together.
  • the lateral flanks 19, 20 of the securing strips 17 and the lateral flanks 21, 22 of the grooves 7, 18 milled in the circumferential cooling ribs in the roll core 1 and in the roll shell 2 (in the region of the cooling fins 24 extending in the circumferential direction) act as support surfaces against the jacket twisting.
  • the fuse strip 17 is shown in Fig. 3 in an oblique view.
  • the fuse strip 17 contains recesses 23 for the undisturbed coolant bushing, these recesses 23 are aligned in the installed position of the fuse strip with the annular coolant channels 13.
  • recesses 23 are each preferably flowed through in the opposite direction to ensure uniform roll jacket cooling. This is indicated by arrows.
  • casting roll is not limited to the embodiments shown in detail, but also includes casting rolls with a roll shell, with substantially central axial cooling holes, and casting rolls with incorporated into the roll core or the roll shell trapezoidal thread-like cooling channels, or on casting rolls in the roll core incorporated circumferential cooling ribs.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Continuous Casting (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Claims (33)

  1. Cylindre de coulée pour la coulée continue de minces feuillards métalliques, en particulier de feuillards en acier, dans une installation de coulée à deux cylindres ou à un cylindre, qui présente une âme (1) de cylindre dotée d'une surface extérieure d'enveloppe (4) et une enveloppe annulaire (2) de cylindre sertie sur la surface extérieure d'enveloppe et dotée d'une surface intérieure d'enveloppe (5), le cylindre de coulée présentant un axe central (8), caractérisé en ce qu'au moins l'une des surfaces d'enveloppe (4, 5) mutuellement opposées et formant une liaison sertie présente dans sa surface des reliefs et des creux dont au moins une partie est orientée dans la direction de l'axe (8) du cylindre de coulée et dont l'extension radiale est d'au moins 2 µm et en ce que les reliefs et les creux forment sur au moins l'une des surfaces d'enveloppe (4, 5) opposées l'une à l'autre une structure de surface qui donne à la surface d'enveloppe une rugosité (Rz) comprise entre 2 µm et 1 500 µm.
  2. Cylindre de coulée selon la revendication 1, caractérisé en ce qu'au moins l'une des surfaces d'enveloppe opposées l'une à l'autre présente une rugosité (Rz) comprise entre 10 µm et 500 µm.
  3. Cylindre de coulée selon l'une des revendications précédentes, caractérisé en ce qu'au moins l'une des surfaces d'enveloppe (4, 5) opposées l'une à l'autre présente des reliefs et des creux dans le plan de symétrie perpendiculaire à l'axe du cylindre de coulée et directement autour de ce plan sur toute la périphérie de l'une des surfaces d'enveloppe (4, 5), et qui sont orientées de préférence dans le sens de la périphérie avec une extension radiale d'au moins 2 µm.
  4. Cylindre de coulée selon la revendication 3, caractérisé en ce que les reliefs et les creux formant dans le plan de symétrie perpendiculaire à l'axe du cylindre de coulée et autour de ce plan sur au moins l'une des surfaces d'enveloppe (4, 5) opposées l'une à l'autre une structure de surface grâce à laquelle la surface d'enveloppe présente une rugosité (Rz) comprise entre 2 µm et 1 500 µm.
  5. Cylindre de coulée selon l'une des revendications précédentes, caractérisé en ce que les reliefs et les creux forment des surfaces d'appui (9) orientées essentiellement radialement et dans la direction de l'axe (8) du cylindre de coulée et dont l'extension longitudinale est inférieure ou égale à la longueur (L) de la surface d'enveloppe.
  6. Cylindre de coulée selon l'une des revendications précédentes, caractérisé en ce que l'âme (1) du cylindre et l'enveloppe annulaire (2) du cylindre sont formées de matériaux de duretés différentes dans la zone des surfaces d'enveloppe (4, 5) opposées l'une à l'autre, la surface d'enveloppe du composant qui présente la plus haute valeur de dureté étant dotée de la rugosité (Rz) prédéterminée.
  7. Cylindre de coulée selon l'une des revendications précédentes, caractérisé en ce que l'âme (1) du cylindre est constituée d'acier et l'enveloppe annulaire (2) du cylindre de Cu ou d'un alliage de Cu.
  8. Cylindre de coulée selon l'une des revendications précédentes, caractérisé en ce qu'une couche de liaison (10) est disposée entre l'âme (1) du cylindre et l'enveloppe (2) du cylindre et en ce que le matériau qui forme la couche de liaison (10) est déposé sur l'une des deux surfaces d'enveloppe (4, 5) associées l'une à l'autre.
  9. Cylindre de coulée selon la revendication 6, caractérisé en ce que l'une des surfaces d'enveloppe (4 ou 5) associées l'une à l'autre est dotée de la rugosité (Rz) prédéterminée et en ce que le matériau qui forme la couche de liaison (10) est déposé sur l'autre surface d'enveloppe.
  10. Cylindre de coulée selon l'une des revendications 8 ou 9, caractérisé en ce que la couche de liaison (10) est formée d'un métal ou d'un alliage de métaux.
  11. Cylindre de coulée selon l'une des revendications 8 à 10, caractérisé en ce que des granulés résistants à l'usure sont incorporés dans la couche de liaison (10).
  12. Cylindre de coulée selon la revendication 11, caractérisé en ce que les granulés résistants à l'usure sont constitués d'oxydes de métaux, par exemple d'oxyde d'aluminium, d'oxyde de zirconium ou de matériaux similaires.
  13. Cylindre de coulée selon la revendication 11, caractérisé en ce que les granulés résistants à l'usure sont formés de lamelles ou de grains de carbures, par exemple du carbure de titane, du carbure de tungstène, du carbure de silicium ou de matériaux similaires.
  14. Cylindre de coulée selon les revendications 12 ou 13, caractérisé en ce que la taille des grains des granulés résistants à l'usure est inférieure à 40 µm et de préférence inférieure à 10 µm.
  15. Cylindre de coulée selon l'une des revendications précédentes, caractérisé en ce que parallèlement à l'axe (8) du cylindre de coulée, l'âme (1) du cylindre présente des rainures (7) réparties sur sa surface d'enveloppe (4) et dans lesquelles des languettes de blocage (17) qui débordent dans la direction radiale de la surface d'enveloppe (4) de l'âme (1) du cylindre sur une distance comprise entre 2 µm et 1 500 µm et qui sont enfoncées dans la surface d'enveloppe (5) de l'enveloppe (2) du cylindre.
  16. Cylindre de coulée selon l'une des revendications 1 à 14, caractérisé en ce que parallèlement à l'axe (8) du cylindre de coulée, l'âme (1) du cylindre représente sur sa surface d'enveloppe (4) des rainures (7) dans lesquelles sont insérées des languettes de blocage (17) qui débordent de la surface d'enveloppe (4) de l'âme (1) du cylindre de 500 µm à 15 mm dans la direction radiale et en ce que la surface intérieure d'enveloppe (5) de l'enveloppe (2) du cylindre contient des rainures (18) qui sont situées face aux rainures (7) ménagées dans la surface d'enveloppe (4) de l'âme (1) du cylindre, les rainures (7, 18) opposées deux à deux reprenant chaque fois une languette de blocage (17), la somme des profondeurs des rainures (7, 18) opposées deux à deux étant supérieure à la hauteur de la languette de blocage (17) qu'elles reprennent.
  17. Cylindre de coulée selon les revendications 15 ou 16, caractérisé en ce que moins de 16 et de préférence moins de huit languettes de blocage (17) ou rainures (7) sont réparties sur l'âme (1) du cylindre.
  18. Cylindre de coulée selon l'une des revendications 15 à 17, caractérisé en ce que la longueur des rainures (7) et des languettes de blocage (17) est plus petite que la longueur (L) de la surface d'enveloppe de l'âme (1) du cylindre.
  19. Procédé de fabrication d'un cylindre de coulée pour la coulée continue de minces feuillards métalliques, en particulier de feuillards en acier, par un procédé de coulée à deux cylindres ou à un cylindre, lequel cylindre de coulée présente une âme (1) de cylindre dotée d'une surface extérieure d'enveloppe (4) et une enveloppe annulaire (2) de cylindre sertie sur la surface extérieure d'enveloppe et dotée d'une surface intérieure d'enveloppe (5), le cylindre de coulée présentant un axe central (8), la surface d'enveloppe (4) de l'âme (1) du cylindre et la surface intérieure d'enveloppe (5) de l'enveloppe du cylindre (2) étant préparées pour une liaison sertie (3) et l'enveloppe du cylindre (2) étant passée sur l'âme (1) du cylindre à une température plus élevée que celle de l'âme (1) du cylindre, caractérisé en ce que des reliefs et des creux dont au moins une partie est orientée dans la direction de l'axe (8) du cylindre de coulée et dont l'extension radiale est d'au moins 2 µm sont réalisés par usinage mécanique sur au moins l'une des surfaces d'enveloppe (4, 5) mutuellement opposées et formant une liaison sertie et en ce que les reliefs et les creux forment sur au moins l'une des surfaces d'enveloppe (4, 5) opposées l'une à l'autre une structure de surface qui donne à la surface d'enveloppe une rugosité (Rz) comprise entre 2 µm et 1 500 µm.
  20. Procédé selon la revendication 19, caractérisé en ce que les reliefs et les creux ménagés sur au moins l'une des surfaces d'enveloppe (4, 5) associées l'une à l'autre forment une structure de surface grâce à laquelle la surface d'enveloppe présente une rugosité (Rz) comprise entre 10 µm et 500 µm.
  21. Procédé selon les revendications 19 ou 20, caractérisé en ce que les reliefs et les creux ménagés sur au moins l'une des surfaces d'enveloppe (4, 5) associées l'une à l'autre sont réalisés avec des surfaces d'appui (9) orientées essentiellement radialement et dans la direction de l'axe (8) du cylindre de coulée et ont une extension en longueur inférieure ou égale à la longueur (L) de la surface d'enveloppe.
  22. Procédé selon l'une des revendications 19 à 21, caractérisé en ce que l'âme (1) du cylindre et l'enveloppe annulaire (2) du cylindre sont formées de matériaux de duretés différentes, si besoin est au moyen d'un durcissement, nitruration ou carburation supplémentaire, la surface d'enveloppe du composant qui présente la plus haute valeur de dureté étant dotée de la rugosité (Rz) prédéterminée.
  23. Procédé selon la revendication 22, caractérisé en ce que la rugosité (Rz) est réalisée par moletage, martelage ou fraisage.
  24. Procédé selon l'une des revendications 19 à 23, caractérisé en ce que l'âme (1) du cylindre est constituée d'acier et l'enveloppe annulaire (2) du cylindre de Cu ou d'un alliage de Cu.
  25. Procédé selon l'une des revendications 19 à 24, caractérisé en ce qu'une couche de liaison (10) est déposée sur l'une des surfaces d'enveloppe (4, 5) associées l'une à l'autre.
  26. Procédé selon l'une des revendications 19 à 25, caractérisé en ce que l'une des surfaces d'enveloppe (4, 5) associées l'une à l'autre est dotée de la rugosité (Rz) prédéterminée et en ce que le matériau qui forme la couche de liaison (10) est déposé sur l'autre surface d'enveloppe.
  27. Procédé selon l'une des revendications 25 et 26, caractérisé en ce que la couche de liaison (10) est déposée par électrolyse.
  28. Procédé selon l'une des revendications 25 et 26, caractérisé en ce que la couche de liaison (10) est formée par dépôt au plasma.
  29. Procédé selon l'une des revendications 25 à 28, caractérisé en ce que la couche de liaison (10) est réalisée en métal ou en un alliage de métaux.
  30. Procédé selon l'une des revendications 25 à 29, caractérisé en ce que des granulés résistants à l'usure sont incorporés dans la couche de liaison (10).
  31. Procédé selon la revendication 30, caractérisé en ce que comme granulés résistants à l'usure, des oxydes de métaux, par exemple de l'oxyde d'aluminium, de l'oxyde de zirconium ou des matériaux similaires sont incorporés dans la couche de liaison (10).
  32. Procédé selon la revendication 30, caractérisé en ce que comme granulés résistants à l'usure, des lamelles ou des grains de carbures, par exemple de carbure de titane, de carbure de tungstène, de carbure de silicium ou de matériaux similaires sont incorporés dans la couche de liaison (10).
  33. Procédé selon les revendications 31 ou 32, caractérisé en ce que des granulés résistants à l'usure en grains d'une taille inférieure à 40 µm et de préférence inférieure à 10 µm sont incorporés dans la couche de liaison (10).
EP02793061A 2002-01-11 2002-12-18 Cylindre de coulee et procede de production d'un cylindre de coulee Expired - Lifetime EP1476262B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT02793061T ATE331578T1 (de) 2002-01-11 2002-12-18 Giesswalze und verfahren zur herstellung einer giesswalze

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT472002 2002-01-11
AT0004702A AT411337B (de) 2002-01-11 2002-01-11 Giesswalze für das stranggiessen von dünnen metallischen bändern
PCT/EP2002/014468 WO2003057390A2 (fr) 2002-01-11 2002-12-18 Cylindre de coulee et procede de production d'un cylindre de coulee

Publications (2)

Publication Number Publication Date
EP1476262A2 EP1476262A2 (fr) 2004-11-17
EP1476262B1 true EP1476262B1 (fr) 2006-06-28

Family

ID=3567521

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02793061A Expired - Lifetime EP1476262B1 (fr) 2002-01-11 2002-12-18 Cylindre de coulee et procede de production d'un cylindre de coulee

Country Status (9)

Country Link
US (1) US7281567B2 (fr)
EP (1) EP1476262B1 (fr)
KR (1) KR20040066207A (fr)
CN (1) CN1304142C (fr)
AT (2) AT411337B (fr)
AU (1) AU2002358749B2 (fr)
DE (1) DE50207410D1 (fr)
MX (1) MXPA04006734A (fr)
WO (1) WO2003057390A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011055066A1 (de) 2011-11-04 2013-05-08 Hydro Aluminium Rolled Products Gmbh Walze mit Kühlsystem

Families Citing this family (8)

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DE10337174A1 (de) * 2003-08-13 2005-03-10 Km Europa Metal Ag Gießwalze
JP2006018139A (ja) * 2004-07-05 2006-01-19 Nitto Kogyo Co Ltd 画像形成装置用の回転体
US7820609B2 (en) * 2005-04-13 2010-10-26 The Procter & Gamble Company Mild, structured, multi-phase personal cleansing compositions comprising density modifiers
AU2008100847A4 (en) * 2007-10-12 2008-10-09 Bluescope Steel Limited Method of forming textured casting rolls with diamond engraving
CN102216002B (zh) * 2009-09-04 2015-03-04 乔格斯布林曼工业及采矿技术有限公司 用于连续铸造装置的滚轴及滚轴配置
KR101662230B1 (ko) 2010-03-26 2016-10-05 삼성전자주식회사 반사구조체, 이를 포함하는 표시장치 및 이들의 제조방법
US9896757B2 (en) 2015-07-02 2018-02-20 Shultz Steel Company Galling and corrosion resistant inner diameter surface in aluminum caster roll shell steels
CN107619919A (zh) * 2017-11-21 2018-01-23 泰州华祥冶金设备有限公司 一种无水冷型陶瓷辊

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US3135319A (en) * 1959-12-24 1964-06-02 Emery B Richards Leveling roll
JPS5835785B2 (ja) * 1979-06-11 1983-08-04 株式会社 富士工業所 ロ−ルロ−ラ
JPS5617169A (en) 1979-07-24 1981-02-18 Mitsubishi Heavy Ind Ltd Cooled rolling roll of direct rolling type continuous casting machine
ATE50715T1 (de) * 1986-05-14 1990-03-15 Larex Ag Giesswalze und verfahren zum ueberholen derselben.
US5209283A (en) * 1988-07-08 1993-05-11 Mannesmann Ag Roll and/or roller for machines of continuous casting
US5191925A (en) * 1989-10-02 1993-03-09 Usinor Sacilor Roll for a device for the direct continuous casting of thin strips of molten metal
DE4027225C2 (de) * 1990-08-24 1993-12-16 Mannesmann Ag Verfahren zur Herstellung einer Stütz- und Führungsrolle einer Stranggießanlage
FR2666756B1 (fr) * 1990-09-14 1993-08-13 Usinor Sacilor Cylindre pour la coulee continue de bandes de metal entre deux cylindres, notamment d'acier, et procede de fabrication de ce cylindre.
US5823926A (en) * 1995-02-22 1998-10-20 Norandal Usa, Inc. Caster roll core and shell assembly and method of manufacturing the same
AUPN811396A0 (en) * 1996-02-16 1996-03-07 Bhp Steel (Jla) Pty Limited Roll cooling structure for twin roll continuous caster

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011055066A1 (de) 2011-11-04 2013-05-08 Hydro Aluminium Rolled Products Gmbh Walze mit Kühlsystem
EP2589446A2 (fr) 2011-11-04 2013-05-08 Hydro Aluminium Rolled Products GmbH Rouleau avec système de refroidissement

Also Published As

Publication number Publication date
ATA472002A (de) 2003-05-15
WO2003057390A3 (fr) 2003-12-18
US20050039875A1 (en) 2005-02-24
KR20040066207A (ko) 2004-07-23
CN1615193A (zh) 2005-05-11
US7281567B2 (en) 2007-10-16
AU2002358749A1 (en) 2003-07-24
EP1476262A2 (fr) 2004-11-17
CN1304142C (zh) 2007-03-14
AU2002358749B2 (en) 2008-04-10
MXPA04006734A (es) 2004-11-10
DE50207410D1 (de) 2006-08-10
ATE331578T1 (de) 2006-07-15
WO2003057390A2 (fr) 2003-07-17
AT411337B (de) 2003-12-29

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