EP1196256B1 - Procede de laminage a chaud en ligne et de moulage continu integre, ainsi que procede correspondant avec bobinage intermediaire et deroulage du pre-feuillard - Google Patents

Procede de laminage a chaud en ligne et de moulage continu integre, ainsi que procede correspondant avec bobinage intermediaire et deroulage du pre-feuillard Download PDF

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Publication number
EP1196256B1
EP1196256B1 EP99917048A EP99917048A EP1196256B1 EP 1196256 B1 EP1196256 B1 EP 1196256B1 EP 99917048 A EP99917048 A EP 99917048A EP 99917048 A EP99917048 A EP 99917048A EP 1196256 B1 EP1196256 B1 EP 1196256B1
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EP
European Patent Office
Prior art keywords
strip
coiling
uncoiling
fact
plant according
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Expired - Lifetime
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EP99917048A
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German (de)
English (en)
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EP1196256A1 (fr
Inventor
Giovanni Arvedi
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ARVEDI, GIOVANNI
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/24—Transferring coils to or from winding apparatus or to or from operative position therein; Preventing uncoiling during transfer
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/68—Furnace coilers; Hot coilers
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab
    • C21D8/0215—Rapid solidification; Thin strip casting
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0242—Flattening; Dressing; Flexing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0252—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment with application of tension

Definitions

  • the present invention concerns an integrated continuous casting and in-line hot rolling process, as well as the relative plant, for the manufacture of ultrathin steel strip in gauges down to 0.6 mm with such characteristics that, for particular uses such as deep drawing for car body parts, the rolled product obtained may replace a cold rolled product
  • the coil box in substance contains a series of entry rolls for bending and inviting the flat product to coiling, as well as motorized rolls for giving the necessary rotation to the product for the formation-of the coil which in any case occurs freely, without a central core on which to be coiled and without a box shell.
  • the equipment used presents some drawbacks, the first of which is that of not being suitable for very thin gauges, for example of less than 15 mm, in which case there is an actual collapse of the coil.
  • patent US 4.703.640 tries to solve these problems by providing a box and the possibility of using a traditional mandrel, and that patent DE 4013582 supplies a possible solution with two coilers, each boxed in a casing, positioned one above the other, but both solutions have problems of technological and technical nature. Problems of the first type are due to the presence of heads and tails necessarily colder than the central part of the strip, which cause difficulties in the subsequent rolling, especially in the case of ultrathin gauges, giving rise in particular to:
  • the strip tail being coiled which corresponds to the leading edge in the subsequent rolling is subjected to a cooling that can reach about 100°C, in this way making the rolling of strips of any gauge, thin or ultrathin (> or ⁇ 1 mm) problematical.
  • the particular positioning of the coilers, placed one above the other makes maintenance of the lower one difficult, above all in terms of time, some days being needed to disassemble the upper coiler in order to be able to have access to the lower one.
  • WO 97/46332 discloses an integrated continuous casting and in-line hot rolling process to obtain coils of ultrathin strip adapted to replace, for particular applications, cold rolled coils, said process having the features of the preamble of the present claim 1, as well as a plant for carrying out such a process, having the features of the preamble of claim 3.
  • the plant includes a furnace of traditional type, without any means to control possible overheating, that may involve also other process steps, among wich the descaling which, in this case, is conventional.
  • JP-A-61-269925 discloses a descaling method in hot rolling through plastic stretching of the strip to mechanically break the scale before the conventional descaling by water
  • the present invention intends to provide an improved process of the type disclosed by WO 97/46332, provided with an induction heating step and a regulation algorithm for the controlled overheating of the pre-strip head and tail which involves the induction heating, coiling/uncoiling and descaling steps, whereby the pre-strip can be rolled in the austenitic, dual step or ferritic fields.
  • This object is achieved with the process of claim 1, while a preferred way of carrying out the process is described in claim 2.
  • the invention also provides a plant adapted to carry out the above-mentioned process, as claimed in the independent claim 3 and one or more of the claims depending thereon.
  • the integrated continuous casting and in-line hot rolling process of the present invention for the manufacture of ultrathin coils includes in sequence, between the initial thickness reduction step, partially with liquid core, and the hot finishing rolling, a coiling and subsequent uncoiling step of the pre-strip with a gauge of 6-15 mm, so that it may have the desired characteristics of constant profile and temperature both transversally (between centre and edges) and longitudinally (between head and tail, passing through the centre).
  • a plastic stretching step follows immediately, which facilitates the elimination of scale in the subsequent descaling step, in this way making it possible in the subsequent hot rolling step to manufacture ultrathin coils in gauges down to 0.6 mm, which, for certain applications, may replace cold rolled ones.
  • the pre-strip 10, downstream of the continuous caster 7 with simultaneous thickness reduction (not represented) and possible subsequent roughing 8, is subjected to coiling/uncoiling in at least one coiler 11 provided by a mandrel 20 which will be better described hereinafter with reference to figures 3-5.
  • a plastic stretching device 12 Downstream of the coiler 11, or more than one coiler placed horizontally on the same line, a plastic stretching device 12 is provided, composed of a battery of not less than three rolls (upper and lower) 18, such as to perform a stretching of the material.
  • the coiling/uncoiling device may preferably include auxiliary equipment to favour the entry or exit of the pre-strip in correspondence with the openings of the box casing, parallel to the pass-line, so as not to leave the final part of the pre-strip outside the casing.
  • the coiling device 11 includes, inside an insulated casing 31, a non-expandable fixed mandrel 20 presenting on its periphery a pocket 21 for inserting the head.
  • Wrapper rolls 33, 33' and 33" are also provided, represented in number of three in Figures 1c and 1d, being mounted on an oscillating arm and pushed inwards so as to be in contact with the outer layer of strip coiled both in complete coiling conditions and therefore at the maximum coil diameter, and at the start of coiling, a condition in which these wrapper rolls are practically in contact with the central mandrel 20.
  • the casing 11 presents two axial peripheral openings 34 and 35, respectively for the entry of the pre-strip 10 to be coiled (Fig. 1c) and its exit when uncoiling (Fig. Id).
  • the two openings 34 and 35 are preferably defined and included between two respective pairs of rolls for favouring the passage of the pre-strip from outside inwards and vice versa.
  • Suitable means of control cause rotation of a deviating element 36, pivoting on the roller table 1, until it is directed towards the opening 34 so as to invite the pre-strip 10 to enter the device 11 and, pushed by the wrapper rolls 33, 33', 33", to enter, inserting itself into pocket 21, and be held by the mandrel 20 which, rotating anti-clockwise, as shown in Figure 1c, determines coiling on itself.
  • an element 37 also having an end normally outside the opening, in a retracted position, can be caused to extend until it inserts this end into the opening so as to form the invitation to the tail of the pre-strip 10 to come out at the start of the uncoiling step, as shown in Fig. 1d, with the mandrel 20 rotating clockwise.
  • the deviating or coiling invitation element 36 as also the extendable and retractable element 37 for uncoiling the pre-strip 10, may of course be made in any other equivalent way suitable for this purpose.
  • the device 11 is provided movable in a parallel direction to its coiling axis along guide tracks 38 represented in cross-section in Figs. 1c and 1d, on which it can be blocked in fixed coiling and uncoiling positions by means of blocking devices 39.
  • the moving of device 11 may occur both for maintenance reasons and above all for transferring the coil into an uncoiling position different from the coiling one so as to allow various casting and/or roughing lines to be connected with a single heating and finishing line downstream.
  • the above-mentioned plastic bending is achieved preferably by also providing a relative penetration movement between the upper and lower rolls 18, such as to produce bending in plastic conditions which ensures a stretching of the material of more than 2%.
  • a control system for the position of the rolls 18 and the force impressed by the device 12 can be provided.
  • This control system preferably includes means able to keep stretching of the material within acceptable values ( ⁇ 0.7%) of length variation, by using a mass flow variation measuring device, obtained by means of two encoders connected to the entry and exit of the device 12.
  • the process of the present invention also includes, upstream of the coiler 11, a heating step obtained by means of an induction furnace 9, known already for example from patent EP 0415987.
  • a regulation algorithm is provided for the overheating of the pre-strip head and tail, and in particular temperature control which involves the induction furnace, the coiler and the descaler downstream, with the aim of making it industrially and continuously possible to have a pre-strip suitable for rolling in the austenitic, dual step or ferritic fields in order to obtain hot production of coils in gauges of ⁇ 1 mm with the qualities of cold rolled ones.
  • FIG. 3 shows in particular the hollow central shaft 21 of the mandrel inside a central body 22 at the sides of which two steel segments 23 are provided, suitably lightened as is the central body 22.
  • the shaft 21 is cooled by water flowing through the axial hole 24 and externally presents a layer of insulation 25 which, limiting the passage of heat between the shaft and the central body 22, reduces to a minimum cooling of the first section of the strip being coiled and corresponding to the uncoiling tail in subsequent rolling.
  • Figures 4 and 5 above all the first of these, show a preferred embodiment, of interlocking fit, to join the central body 22 to the side segments 23 by means of shaped fasteners 26, 26', which engage thicknesses 27 inserted to allow assembly, without the need for tie-rods or bolts as required in traditional constructions.
  • FIG. 3-5 not only has the purpose of increasing the reliability of the mandrel and its ease of execution, but also of making countertension possible between the coiler 11 and the downstream equipment, among which the first stand of the subsequent hot rolling mill. This also facilitates the so-called ferritic rolling in a hot rolling mill which, as stated before, can give the same results as those obtainable traditionally in the subsequent step in a cold rolling mill in order to produce coils of certain qualities, in particular in gauges of ⁇ 1 mm.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Continuous Casting (AREA)

Claims (15)

  1. Procédé de coulage en continu et de laminage à chaud en ligne intégré comportant, en séquence, entre une étape de coulage d'acier liquide et de réduction d'épaisseur consécutive jusqu'à ce qu'une pré-bande de 6 à 15 mm soit obtenue, et une étape de laminage de finition pour obtenir des bobines ultra-minces ayant un gabarit descendant jusqu'à 0,6 mm, une étape de bobinage et de débobinage consécutive de ladite pré-bande, de sorte que les bobines, constituées d'une bande ultra-mince obtenue de la sorte peuvent remplacer, pour certaines applications, des bobines laminées à froid, caractérisé en ce qu'il comporte également, entre l'étape de coulage et l'étape de bobinage/débobinage de pré-bande, une étape de chauffage par induction, à l'aide d'un algorithme de régulation pour le sur-chauffage commandé de la tête et de la queue de la pré-bande impliquant les étapes de chauffage par induction, de bobinage/débobinage et de décalaminage, de sorte que la pré-bande peut être laminée dans les champs austénitiques et à deux étapes ou ferritiques, ladite étape de bobinage/débobinage étant suivie par une étape d'étirage plastique pour faciliter l'élimination de calamine lors d'une étape de décalaminage suivante.
  2. Procédé selon la revendication 1, dans lequel ladite étape d'étirage plastique est effectuée par l'intermédiaire d'opérations d'incurvation concave-convexe consécutives de la pré-bande, pour former des arcs dirigés de manière contraire avec des déplacements de pénétration relatifs par rapport à l'axe de pré-bande.
  3. Installation pour mettre en oeuvre le procédé de la présente invention comportant, en séquence, le long d'au moins une ligne de passage (1), en aval d'une machine de coulage en continu (7) et d'un laminoir de dégrossissage suivant possible (8), en amont d'un laminoir de finition à chaud (14), des dispositifs de bobinage et de débobinage consécutif (11) pour une pré-bande (10) d'une épaisseur de 6 à 15 mm, caractérisée en ce que lesdits dispositifs de bobinage/débobinage (11) sont en aval d'un four à induction (9), et sont suivis par un dispositif d'étirage plastique (12) destiné à la pré-bande et d'un dispositif de décalaminage (13), des moyens de commande du four à induction (9) y étant agencés pour le sur-chauffage de la tête et de la queue de la pré-bande à travers une régulation de température basée sur un algorithme impliquant ledit four à induction (9), le dispositif de bobinage/débobinage (11) et le dispositif de décalaminage (13) en aval du dispositif (12), de sorte qu'une pré-bande est obtenue, adaptée pour être laminée à la fois dans le champ austénitique, et dans le champ à deux étapes ou ferritique.
  4. Installation selon la revendication 3, caractérisée en ce que lesdits dispositifs de bobinage/débobinage (11) comportent un équipement auxiliaire (36, 37) pour favoriser l'entrée et la sortie de la pré-bande (10) en correspondance avec les ouvertures respectives (34, 35) d'un carter de boíte (30) parallèlement à ladite ligne du passage (11).
  5. Installation selon la revendication 3 ou 4, caractérisée en ce que lesdits dispositifs de bobinage/débobinage (11) comportent, dans ledit carter de boíte (31), un mandrin non-extensible capable de supporter une contre-tension avec l'équipement en aval.
  6. Installation selon la revendication 5, caractérisée en ce que ledit mandrin (20) est constitué d'un corps central (22) et d'une paire de segments latéraux (23) qui peuvent être assemblés par l'intermédiaire d'un agencement de verrouillage mutuel sur ledit corps central (22) sans boulon et/ou tige de liaison.
  7. Installation selon la revendication 5 ou 6, caractérisée en ce que ledit mandrin (20) comporte, dans ce corps central (22), un arbre refroidi à l'eau (21) ayant une couche d'isolant extérieur (25) en direction dudit corps central (22).
  8. Installation selon la revendication 3, caractérisée en ce que ledit dispositif d'étirage plastique (12) est constitué d'une batterie de rouleaux supérieurs et inférieurs (18) d'un nombre total au moins égal à trois.
  9. Installation selon la revendication 8, caractérisée en ce que lesdits rouleaux supérieurs et inférieurs (18) sont entraínés avec un déplacement relatif de pénétration les uns entre les autres, de manière à produire une incurvation dans des conditions plastiques qui assurent un étirage du matériau supérieur à 2 %.
  10. Installation selon la revendication 8 ou 9, caractérisée en ce qu'elle comporte un programme de commande de la position des rouleaux (18) et de la force imprimée par ceux-ci dans le matériau de pré-bande (10).
  11. Installation selon la revendication 10, caractérisée en ce que ledit dispositif (12) comporte des moyens pour commander l'étirage du matériau dans une valeur maximum de 0,7 % de variation de la longueur, par l'intermédiaire d'un système de mesure de variation d'écoulement massique.
  12. Installation selon la revendication 11, caractérisée en ce que ledit système de mesure d'écoulement massique comporte deux encodeurs connectés à l'entrée et à la sortie dudit dispositif (12).
  13. Installation selon la revendication 3, caractérisée en ce qu'elle comporte deux lignes de coulage/dégrossissage (1, 1') et deux ou plus de deux dispositifs de bobinage/débobinage (11) pour chaque ligne, qui peuvent positionnés dans des postes de bobinage respectifs, parallèlement aux postes de bobinage correspondants de l'autre ligne, chaque dispositif situé sur une ligne occupant un poste de bobinage dans une position étagée, dans la direction d'alimentation, par rapport au poste occupé en même temps par le dispositif (11) sur l'autre ligne, lesdits dispositifs étant mobiles dans une direction axiale jusqu'à occuper les positions de débobinage respectives, parallèles les uns aux autres mais ne coïncidant pas, sur une ligne de chauffage et de finition centrale (1c).
  14. Installation selon l'une quelconque des revendications 5 à 7, caractérisée en ce que ledit mandrin non-extensible (20) est contenu dans un carter extérieur isolé (31), et peut supporter des poids de bobine ayant un poids spécifique > 100 kg/m, muni d'au moins trois rouleaux d'enveloppement périphériques (33, 33', 33") montés à l'extrémité d'un bras oscillant respectif et de deux dispositifs auxiliaires (36, 37) dans des positions fixes respectivement de bobinage et de débobinage pour favoriser l'entrée de la pré-bande (10) dans le dispositif (11), et sa sortie, respectivement en correspondance avec deux ouvertures (34, 35) pratiquées sur ledit carter (31) dans une direction parallèle à l'axe du mandrin (20).
  15. Installation selon la revendication 13, caractérisée en ce que chaque dispositif (11) est monté, mobile dans une direction parallèle à l'axe du mandrin (20), sur une paire de pistes (38).
EP99917048A 1999-04-07 1999-04-07 Procede de laminage a chaud en ligne et de moulage continu integre, ainsi que procede correspondant avec bobinage intermediaire et deroulage du pre-feuillard Expired - Lifetime EP1196256B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT1999/000082 WO2000059650A1 (fr) 1999-04-07 1999-04-07 Procede de laminage a chaud en ligne et de moulage continu integre, ainsi que procede correspondant avec bobinage intermediaire et deroulage du pre-feuillard

Publications (2)

Publication Number Publication Date
EP1196256A1 EP1196256A1 (fr) 2002-04-17
EP1196256B1 true EP1196256B1 (fr) 2003-07-02

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Country Link
EP (1) EP1196256B1 (fr)
AT (1) ATE244078T1 (fr)
AU (1) AU3532199A (fr)
DE (1) DE69909332T2 (fr)
WO (1) WO2000059650A1 (fr)

Families Citing this family (14)

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ITMI20021996A1 (it) * 2002-09-19 2004-03-20 Giovanni Arvedi Procedimento e linea di produzione per la fabbricazione di nastro a caldo ultrasottile sulla base della tecnologia della bramma sottile
US7823431B2 (en) 2003-06-13 2010-11-02 Siemens Industry, Inc. Method and apparatus for temporarily interrupting the passage of long products between upstream and downstream paths in a rolling mill
DE602004026200D1 (de) * 2004-10-28 2010-05-06 Giovanni Arvedi Verfahren und Produktionsanlage zur Herstellung von heissen ultradünnen Stahlbändern mit zwei Anlagen zum stranggiessen für eine einzelne kontinuierliche Waltzstrasse
DE102004062636B4 (de) 2004-12-21 2007-05-24 Salzgitter Flachstahl Gmbh Einrichtung zum horizontalen Bandgießen von Stahl
WO2007072516A1 (fr) * 2005-12-22 2007-06-28 Giovanni Arvedi Procede et installation associee pour la production de bandes d'acier avec solution de continuite
DE102006013607B4 (de) * 2006-03-22 2008-08-14 Thyssenkrupp Steel Ag Verfahren zum Erzeugen eines Magnesiumbands
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CN102747204B (zh) * 2012-07-13 2013-11-27 洛阳用功高频感应加热设备有限公司 一种薄钢带卷的感应加热装置及其热处理工艺方法
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DE69909332D1 (de) 2003-08-07
WO2000059650A1 (fr) 2000-10-12
AU3532199A (en) 2000-10-23
DE69909332T2 (de) 2004-05-27
EP1196256A1 (fr) 2002-04-17

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