EP3495086B1 - Procédé et dispositif de fabrication d'un matériau composite en forme de bande - Google Patents

Procédé et dispositif de fabrication d'un matériau composite en forme de bande Download PDF

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Publication number
EP3495086B1
EP3495086B1 EP18207429.4A EP18207429A EP3495086B1 EP 3495086 B1 EP3495086 B1 EP 3495086B1 EP 18207429 A EP18207429 A EP 18207429A EP 3495086 B1 EP3495086 B1 EP 3495086B1
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EP
European Patent Office
Prior art keywords
casting machine
thin slab
plating
carrier material
strip
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Application number
EP18207429.4A
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German (de)
English (en)
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EP3495086A1 (fr
Inventor
Axel Weyer
Thomas Runkel
Jochen Wans
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SMS Group GmbH
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SMS Group GmbH
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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
    • B22D11/008—Continuous casting of metals, i.e. casting in indefinite lengths of clad ingots, i.e. the molten metal being cast against a continuous strip forming part of the cast product
    • 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
    • B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
    • B21B2001/383—Cladded or coated products

Definitions

  • the invention relates to a method for the continuous production of a strip-shaped composite material according to the preamble of claims 1 and 2, and a corresponding device according to claim 22.
  • a casting and rolling plant For the production of hot strip, a casting and rolling plant is known according to the prior art, which in the Fig. 31 is shown in a principally simplified side view.
  • Such a casting and rolling plant comprises the following main components, viewed in the direction of transport of the cast strip: casting machine 1, roughing stand 3, heating unit 4, finishing stand 5, cooling section 6, flying shears 7, and finally a reel device 8 the roughing stand 3 and the finishing stand 5 can be arranged.
  • a method for producing a composite strip of steel by roll cladding a directly cast steel strip and the use of such a composite strip are known.
  • a core strip is cast directly using the two-roll process and then clad with a metal cladding strip with low-corrosion to corrosion-resistant cold-rolled strip properties.
  • the production speed and the resulting economic viability of this process are limited due to the casting of the core strip using the two-roll process.
  • a disadvantage of the technology according to DE 101 24 594 B4 consists in only a loose connection between the core strip and the cladding strip before the actual roll cladding, because these strips are introduced into the rolling mill without a connecting contact and can therefore shift relative to one another, especially at the beginning of roll cladding. The threading of the two strips into the rolling mill is therefore a source of interference.
  • Another disadvantage of the method according to DE 101 24 594 B4 is given by changing the layer thickness (cladding strip thickness) and by adjusting the steel quality of the cladding strip. This is because these material characteristics of the cladding tape cannot be flexibly adjusted or changed during production.
  • Another method for producing a composite material in a rolling mill is from DE 10 2015 110 361 A1 known, in which a material composite is produced in a sequence of several steps. First of all, a first workpiece and a second workpiece are made available in the form of a provisional composite. In a subsequent step, the provisional composite is rolled to form the composite material, with a planar connection between the first workpiece and the second workpiece being produced by pre-rolling prior to rolling.
  • a disadvantage of the method according to DE 10 2015 110 361 A1 consists in the fact that no continuous rolling process is carried out - instead, extensive, time-consuming partial work steps are required. As a result, there is no inexpensive production of clad tape. Complex quality assurance measures are also required. This includes the cleaning of the dating surface and the measure to prevent oxidation or re-oxidation of the plating surfaces, namely through the aforementioned process step of forming a provisional bond through the first and second workpiece.
  • this document does not consider the processing of a steel strip in which the side edges are already crimped up before a liquid plating material is applied and corresponding lateral melting limit strips are not required for the steel strip.
  • the technology DE 102 46 887 A1 For the composite material band, which is formed by solidification of the cladding material on the carrier material in the form of the steel band, no additional processing steps are provided after it leaves or exits the isothermal chamber in order to further change the connection quality of the cladding material on the steel carrier band.
  • DE 10 2010 026245 A1 discloses a method for producing hot strip by means of strip casting with material properties that can be adjusted via the strip cross-section.
  • two melts with different alloy compositions are placed on a circulating casting belt, whereby the degree of mixing of these two melts before solidification can be set using an electromagnetic transverse stirrer.
  • the invention is based on the object of making the continuous production of a metal strip in the form of a multilayer strip-shaped composite material more economical and of optimizing the connection quality of the materials or material partners used for this purpose with simple means.
  • the carrier material is produced in step (i) with a first casting machine as a continuous strand of molten steel, a thin slab being formed from the strand produced with the first casting machine by solidification.
  • a step (iii) the closed composite formed from the carrier material and the cladding material solidified on it is subjected to hot rolling, so that a single strip-shaped composite material or hot strip is continuously formed by roll cladding, which consists of the base material and the cladding material.
  • the carrier material is produced in step (i) with a first casting machine as a continuous strand of molten steel, a thin slab being formed from the strand produced with the first casting machine by solidification. Subsequently, in a step (iii) for the closed composite formed from the carrier material and the cladding material solidified thereon, hot rolling is carried out, so that a single strip-shaped composite material or composite material Hot strip is produced, which consists of the base material and the cladding material.
  • the invention provides a device for the continuous production of a metal strip in the form of a multilayer strip-shaped composite material.
  • This device comprises a first casting machine with which a continuous strand is produced from a base material consisting of steel, a thin slab moving in a transport direction being formed from this strand by solidification, and at least one roll stand that is in line with the first casting machine and downstream is arranged thereof, wherein the solidified thin slab of the strand produced with the first casting machine can be hot-rolled with this roll stand.
  • the device further comprises at least one second casting machine with which a liquid cladding material consisting of a cladding material can be applied from above onto a surface of a carrier material in the form of the solidified thin slab, the second casting machine - viewed in the transport direction of the thin slab - being arranged upstream of the roll stand is.
  • the roll stand is designed as a roll cladding device, by means of which a closed composite formed from the thin slab and the cladding material solidified on it can be hot-rolled, so that a single strip-shaped composite material is continuously formed by roll cladding, which consists of the base material and the cladding material.
  • the first casting machine is designed as a belt casting machine with a moving conveyor belt, with at least one electromagnetic transverse stirring device being provided adjacent to the conveyor belt, with which flows can be generated in the base material consisting of liquid steel, which can be applied to the moving conveyor belt, in the transverse direction to the conveyor belt, so that this creates excessive side edges for the thin slab that is formed by the solidification of the molten steel.
  • the invention is based on the essential knowledge that "cast-roll cladding" is implemented in this way, which is a combination of the individual process steps cast cladding and roll cladding, which are now carried out one after the other in a continuous process sequence on a casting and rolling plant adapted for this purpose.
  • the application of the liquid plating material to the carrier material is always carried out continuously and from above, possibly also several times, so that with the present invention not only a two-layer Hot strip, but also such a hot strip with three or possibly even more layers can be produced.
  • the base material from which the carrier material and the thin slab formed from it is produced is always steel (e.g. carbon steel) or stainless steel (e.g. austenitic steel, ferritic steel).
  • the plating material that is used for the liquid plating material that is applied to the carrier material can be steel (e.g. carbon steel) or stainless steel (e.g. austenitic steel, ferritic steel), in which case the base material and the Cladding material consist of different stainless steels.
  • steel e.g. carbon steel
  • stainless steel e.g. austenitic steel, ferritic steel
  • the base material and the Cladding material consist of different stainless steels.
  • non-ferrous metals for example aluminum or copper
  • nickel alloys for the cladding material.
  • a continuous process sequence is achieved with which a multi-layer hot strip or hot sheet is produced.
  • at least one further casting machine e.g. the second casting machine
  • an existing casting and rolling plant e.g. a CSP plant
  • This casting machine fulfills the function of a melt application device for the liquid plating material, which, as explained, is applied from above onto the carrier material.
  • hot strips with at least two layers, or possibly also with more than two layers can be produced, which are formed from the carrier material and the at least one cladding material.
  • a continuous supply of the carrier material (“ endless operation") is ensured in an advantageous development of the invention in that the carrier material is continuously produced in step (i) as a strand of steel with a first casting machine. This strand then solidifies to form a thin slab, onto the surface of which the liquid plating material is then applied from above.
  • the first casting machine for producing the continuous strand for the carrier material can function according to the principle of continuous casting, a mold with walls between which the base material is poured as liquid metal from above and down through an opening in the mold in a strand guide system with a Cooling leaks.
  • the first casting machine can be a vertical bending system (bending of the strand after it has solidified or bending of the non-solidified strand with the help of guide segments), curved continuous caster, oval continuous caster.
  • the first casting machine it is also possible for the first casting machine to be designed as a belt casting machine (BCT machine) with a moving conveyor belt, with the base material in the form of molten steel being poured or applied to the conveyor belt and then solidifying to form a thin slab .
  • BCT machine belt casting machine
  • the raised side edges for the thin slab can be formed in that the belt casting machine has at least one electromagnetic cross-stirring device with which a cross-flow occurs in the molten steel applied to the conveyor belt in the direction of the side edges, ie a flow is generated in the transverse direction to the conveyor belt.
  • This transverse flow in the direction of the side edges influences the solidification contour of the steel melt, as a result of which the elevated side edges of the thin slab formed by solidification are achieved.
  • the side delimitation devices which are positioned positively against the side edges of the thin slab, have circumferential side belts that are guided around rotating guide rollers.
  • the speed of these guide rollers is expediently synchronized with the process or transport speed for the thin slab, so that there is no relative movement between, on the one hand, the thin slab and the cladding material applied to it and, on the other hand, the engaged side bands.
  • suitable adjusting devices e.g. hydraulic cylinders or electric motor drives.
  • the amount of the liquid plating material that is applied to the carrier material from above with the second casting machine can be adjusted or regulated. This allows the desired plating height to be set.
  • the carrier material in the form of the thin slab moving through or moving in the direction of transport then appropriately absorbs the liquid cladding material in the continuous through-flow process.
  • the band width of the carrier material, the band speed and the camber of the edge, which is ensured with the side limiting devices can be used as variable process parameters, depending on which the amount of the liquid plating material applied to the carrier material is adjusted or regulated.
  • the plating height for the applied liquid plating material can be adjusted via the set quantity regulation up to the upper limit of the raised edge.
  • the quality of a connection of at least two material partners (carrier material, and at least one cladding material), from which the desired strip-shaped composite material is continuously produced, can be further improved by the fact that the closed composite, which is formed in the course of step (ii) by solidification of the Plating material forms on the carrier material, is guided in a protective gas atmosphere or within a closed inertisable limited space.
  • a protective gas device is provided which is either part of the second casting machine and / or - viewed in the direction of transport of the thin slab - is arranged downstream of the second casting machine.
  • the base material and / or the cladding material consist of steel or a steel alloy, this at least reduces or even eliminates the formation of scale, and in this respect the quality of the connection between the carrier material and the cladding material is improved.
  • a protective gas device is provided between the first and second casting machine, the carrier material then already before the application of the liquid plating material - thanks to the protective gas device - in an inert environment in the transport direction, namely is moved in the direction of the second casting machine. This prevents re-oxidation or scaling on the surface of the carrier material or the thin slab.
  • a cleaning device e.g. mechanical cleaning or descaling with high-pressure water
  • a solidification section is provided downstream of the second casting machine.
  • the length of this solidification path is expediently adapted to the transport speed of the thin slab and preferably corresponds to the longitudinal extent of the aforementioned protective gas device. This ensures that the composite formed from the carrier material in the form of the thin slab and the cladding material applied thereon is guided within the protective gas device at least until the cladding material has completely solidified on the surface of the thin slab.
  • connection of the individual material partners (carrier material and at least one plating material) when applying the liquid plating material to the carrier material according to step (ii) is optimized if the carrier material is suitably heated again before step (ii), e.g. to a temperature of 900 ° C.
  • This improves the formation of a closed composite formed from the carrier material and the plating material solidified on it, which is achieved by fusing, partial fusing, adhesion or a complete application of the plating material with or on the surface of the carrier material in the form of the thin slab.
  • the surface of the thin slab is cleaned before step (ii), preferably by a mechanical cleaning device, e.g. by blasting, brushing, grinding, planing, milling or the like.
  • rotating brushes can be provided for cleaning the surface of the thin slab.
  • the roll cladding of the individual material partners (carrier material and at least one cladding material) by means of hot rolling in step (iii) or by the roll cladding device is optimized in that the closed composite is formed from the carrier material and the cladding material solidified on it before step (iii), that is, upstream of the roll cladding device, is heated again in a targeted manner.
  • inductive heating, electrical heating or thermal heating can be provided, with which the closed composite is brought into interaction or passed through.
  • a multiple layering of cladding material is carried out on the carrier material in the form of the thin slab.
  • a further liquid plating material consisting of a plating material is then applied to the closed composite, which has formed from the plating material that has already solidified thereon.
  • a multilayer, strip-shaped composite material with at least three layers is continuously produced. This means that the further liquid plating material is applied from above onto the plating material which has already solidified beforehand.
  • the first pass or roll cladding according to step (iii) of the method according to the invention can be carried out for or with a total of three layers consisting of the carrier material in the form of the thin slab and the solidified layers of the cladding material thereon.
  • steps (ii) and (iii) of the method according to the invention are then carried out repeatedly for the carrier material moved in the transport direction, preferably - as explained - within a protective gas atmosphere, with a closed composite consisting of the first Carrying out step (iii) has formed the composite material produced and the further plating material then applied thereon, is then roll-clad into a single strip-shaped composite material with three layers in the repeated carrying out of step (iii).
  • the continuously produced strip-shaped composite material is severed or separated after step (iii) or downstream of a roll cladding device which directly adjoins the merging device.
  • the multi-layer strip produced can then be processed in further process steps, e.g. trimming the strip edges, cold rolling, hot-dip galvanizing, coating.
  • a furnace or heating device can be arranged in the function of a holding furnace, e.g. between the roughing train or the roll cladding device and the finishing train, in order to enable batch operation if necessary. This is advantageous in the event that a decoupling of the casting speed from the speed at which the composite material produced is processed, e.g. in the finishing train, is desired. A severing of the composite material produced by means of a severing device between the roughing train and the finishing train makes this possible.
  • this device 10 serving for the continuous production of a metal strip in the form of a multilayer strip-shaped composite material 11.
  • a device as such according to FIG Fig. 1-11 and according to the Fig. 21-30 not part of the present invention, but is suitable for carrying out a method according to the present invention.
  • the same features in the drawing are each provided with the same reference symbols. At this point it is pointed out separately that the drawing is only shown in a simplified manner and, in particular, without a scale.
  • the embodiments of the device 10 according to the invention are divided into three concepts, namely concept I ( Fig. 1-11 ), Concept II ( Fig. 12-20 ) and Concept III ( Fig. 21-30 ).
  • Fig. 1 a basically simplified side view of the device 10 according to a first embodiment of the first concept I is shown.
  • the device 10 comprises a first casting machine 12 with a mold 14. With the casting machine 12, liquid metal (steel) - as the base material - is poured in from above between the walls of the mold 14, the base material then being fed through an opening in the mold 14 as a continuous strand 13 exits into a strand guide system 15 with cooling. As a result of solidification, a thin slab 16 is then formed from the strand 13, which is moved or transported in a transport direction T (in the image area from left to right) over a roller table guide of the device 10.
  • the device 10 further comprises a second casting machine 20 and - in Fig.
  • a protective gas device 26 which is part of the second casting machine 20 or - in the transport direction T seen - is arranged downstream thereof.
  • a solidification section E is provided, the length of which can coincide with a longitudinal extension of the protective gas device 26 along the transport direction T.
  • the device 10 initially comprises a heating device 27, which can be designed as induction heating, and then at least one roll stand in the form of a roll cladding device 22.1, which is part of a roughing train 23.
  • the reference symbol “22.i” indicates that the roughing train 23 can include further roll cladding devices.
  • the number of two roll cladding devices shown for the roughing train 23 is only to be understood as an example.
  • the device 10 comprises a finishing train 24, the number of the four rolling stands shown here likewise being to be understood only as an example and also being larger or smaller than four.
  • a cooling section 36 is then provided downstream of the finishing rolling train 24, followed by a pair of shears 37, and finally a reel device 38 for winding up a continuous strip-shaped composite material 11 produced with the device 10.
  • a descaling device 29 for cleaning the thin slab 16 which has formed from the continuous strand 13 through solidification
  • a further heating device 27 e.g. inductive or thermal
  • a further cleaning device 28 arranged.
  • the cleaning device 28 preferably functions purely mechanically and is designed, for example, in the form of rotating brushes.
  • the device 10 can have separating devices 35 (e.g. in the form of drum shears), e.g. between the roughing train 23 and the finishing train 24 and / or immediately following the curved strand guide system 15.
  • separating devices 35 e.g. in the form of drum shears
  • the structure of the device 10 explained above and the arrangement of its components according to the first concept I are essentially based on a conventional casting and rolling plant (cf. Fig. 31 ), and come - with the exception of the first casting machine 12 - also in the device 10 according to the second concept II (see. For example Fig. 12 ) for use.
  • An essential feature of the present invention is that in such a conventional casting and rolling plant at least one second casting machine 20 is now integrated or supplemented, for example upstream of the roughing train 23 and its roll cladding device 22.1.
  • the device 10 according to the embodiment of FIG Fig. 1 comprises an upsetting roll stand 25 which - viewed in the transport direction T - is arranged upstream of the second casting machine 20.
  • the mode of operation and the intended use of this upsetting roll stand 25 are explained separately below.
  • the device 10 comprises a further heating device 27, for example in the form of induction heating, and a cleaning device 28, which preferably works mechanically and is designed, for example, in the form of rotating brushes.
  • FIG. 11 shows a basically simplified side view of the device 10 according to a second embodiment of the first concept I.
  • a further heating device 27 and an in particular mechanical cleaning device 28 are arranged between the edging roll stand 25 and the second casting machine 20.
  • the remaining system components of the device 10 in the second embodiment of FIG Fig. 2 correspond to the components of the first embodiment without change, so that the explanations should be referred to in order to avoid repetition Fig. 1 may be referred.
  • liquid steel as the base material, is cast with the first casting machine 12 to form a continuous strand 13, from which, after exiting the cooled strand guide system 15, a thin slab 16 is then formed, which is placed on the roller table guide of the device 10 in the transport direction T is moved.
  • the thin slab 16 formed therefrom is first cleaned with the descaling device 29, for example with water under high pressure.
  • the thin slab 16 is then heated again with the heating device 27 and then cleaned again by the cleaning device 28, for example by using brushes which are brought into contact with the surface of the thin slab 16 from above.
  • the use of the heating device 27 arranged upstream of the second casting machine 20 - viewed in the transport direction T - ensures that the thin slab 16, when it finally reaches the second casting machine 20 and is passed below it, has a temperature of at least 600 ° C., preferably of at least 900 ° C.
  • the side edges 18 of the thin slab 16 come laterally into contact with the edging rolls 25s of the edging roll stand 25.
  • the two side edges 18 of the thin slab 16 are accordingly plastically deformed and thereby increased.
  • This change in shape for the thin slab 16 is from a comparison of the FIGS. 5 and 6 can be seen in which the thin slab 16 is shown before and after the plastic deformation of the side edges 18.
  • Fig. 7 illustrates a possible configuration of the edging roll stand 25, wherein an angle of inclination ⁇ of the longitudinal axes L of the two edging rolls 25s relative to a horizontal H can be set.
  • the edging rollers 25s are thus inclined with their longitudinal axis L inclined against the thin slab 16, so that the profiling of the elevated side edges 18 as in FIG Fig. 6 shown results.
  • the edging rollers 25s are conical with their outer circumferential surface, a longitudinal axis L of the edging rollers 25s running vertically. In this way, the raised side edges 18h of the thin slab 16 can also be produced, as in FIG Fig. 6 shown.
  • FIG. 8 The change in shape that results for the thin slab 16 after passing through the edging stand 25 is shown in the cross-sectional view of FIG Fig. 8 illustrated again.
  • the thin slab 16 In the upper part of the Fig. 8 the thin slab 16 is shown after the plastic deformation, the thin slab 16 in the lower part of the illustration of FIG Fig. 8 shown before upsetting.
  • the thin slab 16 In the area of its central surface 17, the thin slab 16 has a height or thickness which is designated by "d".
  • the plastic deformation of the side edges 18 results in an edge height k, a so-called edge elevation being determined from the difference in the distance k (between the uppermost point of the elevation to the underside of the thin slab 16, after upsetting) and the aforementioned thickness d of the thin slab 16.
  • the raised side edges 18h of the thin slab 16 can also be produced in that several upsetting roll stands 25 are provided, which - viewed in the transport direction T - are arranged one behind the other. This is in Fig. 1 , Fig. 2 , Fig. 10 and Fig. 11 for the reference numeral 25 each indicated in a symbolically simplified manner with the two rectangles which are positioned next to one another. Correspondingly, the side edges of the thin slab 16 are then plastically deformed several times by these upsetting roll stands 25 in order to achieve the desired edge elevation (kd) for the thin slab 16 at its side edges as a result.
  • FIG. 10 shows, in a fundamentally simplified manner, part of the device 10 from FIG Fig. 1 or from Fig. 2 , namely for the second casting machine 20 and the solidification section E provided downstream thereof.
  • the second casting machine 20 comprises a quantity adjustment device 30, a pan 32 for receiving liquid cladding material consisting of a cladding material, an intermediate container 31 (tundish), and finally a melt feed system 33, which has a pouring nozzle 34 below the intermediate container 31.
  • the functioning of such a pouring nozzle 34 is, for example, from WO 2012/016922 A1 or DE 10 2015 114 725 B3 known, and therefore not explained in detail at this point.
  • the protective gas device 26 is also shown symbolically simplified by a dashed line. It is important here that the protective gas device 26 forms a restricted space that can be inerted at least for the second casting machine 20 and the adjoining solidification path E, which leads to an improved connection quality between the thin slab 16 and the liquid plating material applied to it.
  • a longitudinal extension of the protective gas device 26 - viewed in the transport direction T - can coincide with the length of the solidification path E.
  • the hot thin slab 16 (e.g. at a temperature of 900 ° C, thanks to the heating device 27) is passed in the transport direction T below the melt feed system 33 of the second casting machine 20, and serves as a carrier material, namely in the sense that the liquid cladding material through the casting nozzle 34 is applied to the surface 17 of the thin slab 16.
  • a lateral flowing down of the applied liquid plating material from the carrier material 16 is prevented by the raised side edges 18h.
  • the height or the amount with which the liquid plating material Pf is applied to the central surface 17 of the thin slab 16 and thus filled into the trough is in the Fig. 8 symbolized with the plating height p shown there.
  • FIGS 9a-9c Various cross-sectional views of the thin slab 16 are shown.
  • the thin slab 16 is shown at a point in time at which it arrives at the second casting machine 20.
  • the Figure 9b shows the thin slab 16 at a point in time when liquid plating material Pf “fresh” has been applied to the central surface 17 of the thin slab 16 between the raised side edges 18h and is still liquid.
  • the Figure 9c the thin slab 16 at the end of the solidification section E, the cladding material now being essentially completely solidified, which is denoted by the reference symbol “Pe”.
  • the interface between the thin slab 16 and the cladding material Pe solidified thereon is designated by “K” and is symbolized by a dash-dotted line.
  • a closed composite has formed from the carrier material in the form of the thin slab 16 and the cladding material Pe solidified on it, which is incorporated into the Figures 9 and 9c each designated by "21".
  • the quantity setting device 30 By means of the quantity setting device 30, in accordance with its name, the quantity of liquid plating material which is applied to the thin slab 16 on its surface 17 using the second casting machine 21 can be set or regulated.
  • the quantity setting device 30 can have a pressure chamber with a variable vacuum setting, and / or a movable slide or stopper rod which is provided, for example, inside the intermediate container 31.
  • Said variable vacuum setting for the quantity setting device 30 is, for example, off EP 1 428 599 A1 already known and therefore not further explained at this point.
  • this closed composite 21 is first heated again downstream of the solidification path E by a heating device 27, and then by the roll cladding device 22.1 is hot-rolled with a first pass.
  • a single strip-shaped composite material 11 which consists of the base material and the cladding material, is then continuously formed by roll cladding.
  • this composite material 11 can then be coiled up by the reel device 38.
  • Fig. 10 and Fig. 11 further embodiments for a device 10 according to the first concept I according to the present invention are shown and explained, with which a multiple layering of plating material on the carrier material in the form of the thin slab 16 is possible, for the continuous production of a strip-shaped composite material 11 with a total of three (or possibly . even more) layers.
  • FIG. 13 shows a third embodiment of the device 10, the components of which are essentially those of the first embodiment of FIG Fig. 1 so that to avoid repetition refer to the explanations Fig. 1 may be referred.
  • a further melt feed device for liquid plating material is provided, namely in the form of a third casting machine 40.
  • this third casting machine 40 in principle simplified within a box above the roller table guide of Fig. 1 shown.
  • the third casting machine 40 and the other components that are contained within said box are arranged at the point of the roller table guide of the device 10, which is indicated by the arrow pointing vertically downwards and - viewed in the transport direction T. - is upstream of the roll cladding device 22.1.
  • the third casting machine 40 and the further components provided for this purpose correspond to the second casting machine 20 of the first and second embodiment of FIG Fig. 1 or. Fig. 2 .
  • Fig. 11 shows a basically simplified side view of a device 10 according to a fourth embodiment according to the first concept I according to the present invention.
  • the components for the fourth embodiment of the device 10 are shown, which in comparison, for example, with the embodiment of FIG Fig. 2 are now additionally provided.
  • a third casting machine 40 in connection with a protective gas device 26 and the solidification section E provided downstream thereof.
  • the third casting machine 40 - viewed in the transport direction T - is arranged downstream of the roll cladding device 22.1, as indicated by the continuous arrow pointing vertically downwards.
  • a further upsetting roll stand 25 is arranged upstream of the third casting machine 40, with which - as in analogy to Fig. 5-7 already explained - the side edges of the composite material 11 can be plastically deformed.
  • a further heating device 27 and / or an in particular mechanical cleaning device 28 are arranged between the upsetting roll stand 25 and the third casting machine 40 (see upper box in Fig. 11 ).
  • a further heating device 27 and / or an in particular mechanical cleaning device 28 are arranged between the upsetting roll stand 25 and the third casting machine 40 (see upper box in Fig. 11 ).
  • a closed composite 21 which has formed from the composite material 11 previously produced and the further solidified cladding material 18e applied to it, is then again hot-rolled by means of a roll cladding device 22.1 arranged downstream of the third casting machine 40, so that a Composite material 11 is now produced with a total of three layers.
  • This embodiment can also be modified in such a way that the third casting machine 40 and the other components interacting therewith (see upper box) - viewed in the transport direction T - are arranged downstream of the roughing train 23.
  • Fig. 12 16 shows a basically simplified side view of the device 10 according to a first embodiment of the second concept II.
  • the arrangement of components along the roller table guide of the device 10 corresponds to the embodiment of FIG Fig. 1 so that reference may be made to this in order to avoid repetition.
  • the first casting machine 12 is designed in the form of a belt casting machine 120 which has a circulating or moving conveyor belt 121.
  • the cast steel is treated in such a way immediately after casting on the conveyor belt 121 that side edges with increased cross-section are set, and therefore an edging roll stand 25 as in FIG Fig. 1 provided is not required.
  • Fig. 13 shows the belt casting machine 120 and the adjoining circulating conveyor belt 121 in an enlarged side view, wherein Fig. 14 a top view of Fig. 13 indicates.
  • a total of three rollers R are provided for the conveyor belt 121, with which the conveyor belt 121 can rotate. The smaller of the two rollers shown on the left in the image area ensures that the conveyor belt 121 is evenly tensioned Fig. 13 are not shown.
  • a feed device 122 is arranged between the belt casting machine 120 and the beginning of the conveyor belt 121, with which liquid steel is poured or cast onto the conveyor belt 121.
  • the conveyor belt 121 is suitably cooled from below by spray nozzles (not shown for the sake of simplicity).
  • click DE 10 2013 214 940 A1 are referred to, the disclosure of which is hereby incorporated by reference.
  • At least one electromagnetic transverse stirring device 123 ( Fig. 13 ) arranged, comprising a first electromagnetic transverse stirrer 124 and a second electromagnetic transverse stirrer 125 arranged adjacent thereto ( Fig. 14 ).
  • These transverse stirrers 124, 125 each consist of a multiplicity of coils which are arranged across the conveyor belt 121 and the molten steel cast thereon. By passing a current through the respective coils, a magnetic field is induced which serves to generate a flow within the molten steel towards the side edges, ie in the transverse direction to the conveyor belt 121.
  • an electromagnetic longitudinal stirrer 126 Downstream of the two transverse stirrers 124, 125, an electromagnetic longitudinal stirrer 126 can also be arranged, which also consists of a plurality of coils.
  • the mode of operation of this electromagnetic stirrer 12-126 and its mode of operation is, for example, from EP 2 649 407 B1 known, for the purposes of the present invention the disclosure according to EP 2 649 407 B1 is comprehensively referred to.
  • the two transverse stirrers 124, 125 After the molten steel has been discharged by the feed device 122 onto the moving conveyor belt 121, the two transverse stirrers 124, 125, as explained, generate a flow within the molten steel towards the side, ie in the direction of the side edges. In other words, a surface flow is caused within the molten steel by the two transverse stirrers 124, 125 in the direction of the side edges of the conveyor belt 121 - as seen from the center of the conveyor belt. Specifically, in the molten steel 130 ( Fig.
  • the dam block chains ensure the necessary lateral guidance and thus limit the profile width b for the poured molten steel 130 Solidification distance E (cf. Fig. 13 ).
  • the solidification contour of the molten steel is influenced by the cross flow generated by means of the two transverse stirrers 124, 125 within the molten steel.
  • the cross-sectional views shown illustrate the course of the contour formation after the molten steel has been discharged onto the conveyor belt 121.
  • Fig. 15 shows a liquid flat profile 130 before the stirring process.
  • Fig. 16 shows the flat profile 16 after the action of the two transverse stirrers 124, 125, a thin slab 16 with raised side edges 18h being formed from the liquid steel as a result of incipient solidification.
  • FIG Fig. 17 the flat profile or the thin slab 16 formed from the steel melt by solidification at the end of the solidification section E (cf. Fig. 13 ), the location or position of the generated upper edges of the raised side edges 18h being provided with the reference symbol "18p".
  • FIG. 17 The cross-sectional view of Fig. 17 is in the Fig. 18 shown enlarged again. It can be seen from this that with the raised side edges 18h of the thin slab 16, an edge elevation is achieved which is determined from the difference between the edge height k and the thickness or height d of the thin slab 16. This gives the thin slab - viewed across its width b or in cross section - a central surface 17 which is laterally delimited by the two raised side edges 18h.
  • the thin slab 16 After solidification, ie when leaving the circulating conveyor belt 121 or at the end of the associated solidification section E, the thin slab 16 has the in the Fig. 16-18
  • the contour shown has the function of a trough for further processing within the device 10, into which a liquid plating material can be introduced, as will now be explained in detail below.
  • the thin slab 16 is after it in cross section the in Fig. 18 has received the contour shown, moved on the roller table guide of the device 10 further in the transport direction T, in the direction of the second casting machine 20. Before the thin slab 16 reaches the second casting machine, it can first be cleaned by the descaling device 29, and then by the heating device 27 heated in a targeted manner and, if necessary, cleaned again by the mechanically functioning cleaning device 28.
  • FIG Figures 19 and 19a-19c The subsequent process, after which a liquid plating material Pf is applied to the central surface 17 of the thin slab 16 by means of the second casting machine 20, is shown in FIG Figures 19 and 19a-19c shown, and corresponds identically to the sequence that was already described above with reference to Figures 9 and 9a-9c has been explained, so that reference is made to this in order to avoid repetition.
  • FIG. 11 shows a basically simplified side view of a second embodiment of the device 10 according to the second concept II.
  • a third casting machine 40 with further system components - in Fig. 20 shown in simplified form in a box above the roller table guide - arranged upstream of the roll cladding device 22.1, as indicated by the arrow pointing vertically downwards, which ends in front of or upstream of the roll cladding device 22.1.
  • the third casting machine 40 it is possible to apply further liquid plating material to the closed composite 21, which has previously formed from the carrier material 16 below solidified plating material Pe subsequent first stitch with the roll cladding device 22.1. Otherwise, this casting machine 40 is used in the same way as in the embodiment of FIG Fig. 10 according to the first concept I, so that reference is made to the explanations at the appropriate point.
  • FIG. 21 a basically simplified side view of the device 10 for a first embodiment according to the third concept III is shown.
  • the system components used here which - viewed in the transport direction T - are provided following the first casting machine 12 along the roller table guide, correspond to those of the embodiment from FIG Fig. 1 , with the exception of the edging mill stand 25 (at Fig. 21 not provided) and by institutions that are now part of the Fig. 21 downstream of the second molding machine 20 for side guiding the plating liquid material Pe, as explained below.
  • the thin slab 16 which has formed from the molten steel by solidification, has a rectangular cross-section when it arrives at or in front of the second casting machine 20 (cf. Fig. 24 ).
  • FIG. 10 shows an enlarged side view of part of the device 10 of FIG Fig. 21 , namely for the second casting machine 20 and the other components that serve to guide the liquid plating material Pe and are either part of the casting machine 20 or are located downstream thereof.
  • FIG. 23 FIG. 11 shows a plan view of the side view of Fig. 22 Specifically - viewed in the transport direction T of the thin slab 16 - a side delimitation device S is provided up or from the level of the second casting machine 20, which has circumferential side belts 19 which are guided on rotating guide rollers F. During the movement of the thin slab 16, the side belts 19 are positioned in a form-fitting manner on their side edges 18, so that a temporary side edge elevation or edge elevation is thereby formed.
  • a length of the side belts 19 - viewed in the transport direction T of the thin slab 16 - essentially corresponds to the length of the solidification path E (see top view of FIG Fig. 23 ).
  • a protective gas device 26 is provided (in Fig. 21 and Fig. 22 symbolized only in a simplified manner by dashed lines), in which the side delimitation device S is received in connection with the circumferential side belts 19. It is important here that the protective gas device 26 forms a restricted space that can be inerted at least for the second casting machine 20 and the adjoining solidification path E, which leads to an improved connection quality between the thin slab 16 and the liquid plating material applied to it.
  • the side delimitation device S with its circumferential side strips 19 is accommodated within the protective gas device 26, so that the application of the liquid plating material Pf and its subsequent solidification on the surface 17 of the thin slab 16 takes place accordingly in an inert environment.
  • the thin slab 16 is shown in each case in a cross-sectional view, a comparison of these figures making it clear how the guide rollers F, and thus the side belts 19, are attached to the side edges 18 of the thin slab ( Fig. 24 ) be employed.
  • the thin slab 16 With regard to the section in which the circumferential side belts 19 are in contact with the side edges 18 of the thin slab 16 moving synchronously with this, the thin slab 16 now has the function of a trough for further processing within the device 10, into which a Surface 17 of the thin slab 16 (cf. Fig. 25 ) liquid plating material can be introduced or cast, which will be explained in detail below.
  • the second casting machine 20 comprises the following additional components: a quantity adjustment device 30, a pan 32 for receiving liquid plating material consisting of a plating material, an intermediate container 31 (tundish), and finally a melt feed system 33, which is located below the intermediate container 31 Has pouring nozzle 34.
  • the application of liquid plating material to a surface 17 of the thin slab 16 now works as follows:
  • the thin slab 16 is passed in the transport direction T below the melt feed system 33 of the second casting machine 20 in the hot state, and serves here as a carrier material, namely in the sense that liquid plating material, which is formed from a plating material, through the pouring nozzle 34 onto the surface 17 of the thin slab 16 is applied.
  • This application of the liquid plating material Pf to the surface 17 of the thin slab 16 takes place within the inerted environment of the protective gas device 26.
  • a lateral downflow of the applied liquid plating material from the carrier material 16 is prevented by the circumferential side belts 19 (cf. Fig.
  • FIG Fig. 23 symbolically indicated by an arrow "Pf"
  • Pf the plating material
  • FIG. 28 shows the thin slab 16 at a point on the roller table guide which is located downstream of the side delimitation device S and in particular also downstream of the solidification section E.
  • the side delimitation device S located downstream of the side delimitation device S and in particular also downstream of the solidification section E.
  • there are no longer any side bands at the side edges 18 of the thin slab 16 because further processing of the thin slab 16 with the cladding material Pe solidified on it can now take place without further edge guidance.
  • the quantity setting device 30 By means of the quantity setting device 30 (cf. Fig. 22 ) the amount of liquid plating material which is applied to the thin slab 16 on its surface 17 with the second casting machine 20 can be set or regulated - in accordance with its name.
  • the quantity setting device 30 can have a pressure chamber with a variable vacuum setting, and / or a movable slide or stopper rod, which, for example, is inside the intermediate container 31 is provided.
  • Said variable vacuum setting for the quantity setting device 30 is, for example, off EP 1 428 599 A1 already known and therefore not further explained at this point.
  • the cladding material is only applied to the carrier material in the form of the thin slab 16 in such an amount as is possible with the raised edge realized by the side strips 19 of the side delimitation device S.
  • the closed composite 21 which, as explained, is formed from the carrier material 16 and the cladding material Pe solidified on it, it is important that this closed composite 21 is heated again downstream of the solidification section E by a heating device 27 before this composite 21 is then hot rolled by the roll cladding device 22.1 with a first pass.
  • a single strip-shaped composite material 11 which consists of the base material and the cladding material, is continuously formed by roll cladding.
  • the composite material 11 produced is then guided through the finishing rolling train 24 and the cooling section 36 and can be coiled up by the reel 38 at the end of the processing line.
  • Fig. 29 and Fig. 30 further embodiments for a device 10 according to the third concept III according to the present invention are shown and explained, with which a multiple layering of plating material on the carrier material in the form of the thin slab 16 is possible for the continuous production of a strip-shaped composite material 11 with a total of three (or possibly . even more) layers.
  • FIG. 11 shows a second embodiment of the device 10 according to the third concept III, the components of which are essentially those of the first embodiment from FIG Fig. 21 so that to avoid repetition refer to the explanations Fig. 1 may be referred.
  • a further melt feed device for liquid plating material is provided, namely in the form of a third casting machine 40.
  • this third casting machine 40 is simplified in principle inside a box above the roller table guide of Fig. 1 shown, in connection with further components, which are also provided in addition and interact with this third casting machine 40.
  • the third casting machine 40 and the other components that interact with it and that are shown inside the said box are arranged at the point of the roller table guide of the device 10, which is indicated by the arrow pointing vertically downwards and - in seen in the direction of transport T - upstream of the roll cladding device 22.1.
  • Fig. 29 correspond to the third casting machine 40 and the further components provided for this purpose (e.g. the protective gas device 26, the solidification section E and the side delimitation device S with the circumferential side belts 19) of the second casting machine 20 according to the first embodiment, so that to avoid repetition on the explanations to Fig. 21 may be referred.
  • the protective gas device 26 the solidification section E and the side delimitation device S with the circumferential side belts 19
  • step (iii) of the invention hot rolling in the form of a first pass according to step (iii) of the invention for a closed composite 41, which has formed from the thin slab 16 and the two solidified cladding materials Pe applied to it, with the roll cladding device 22.1 Process carried out, so that a tape-shaped composite material 11 with a total of three layers is thereby continuously produced.
  • Fig. 30 shows a basically simplified side view of a third embodiment for a device 10 according to the third concept III according to the present invention.
  • the components for the third embodiment of the device 10 are shown, which in comparison to the embodiment of FIG Fig. 21 are now additionally provided.
  • a third casting machine 40 in connection with a protective gas device 26, the solidification section E provided downstream thereof and the side delimitation device S with the circumferential side belts 19, which are positioned positively on the side edges 18 of the thin slab 16.
  • the third casting machine 40 - seen in the transport direction T - is arranged downstream of the (first) roll cladding device 22.1, and e.g. upstream of further roll cladding devices of the roughing mill train 23.
  • a lateral downward flow of the liquid plating material, which is now applied from above with the third casting machine 40 onto a surface of the composite material 11, is prevented, as already explained, by the circumferential side bands 19 that are positioned.
  • a further heating device 27 and / or an in particular mechanical cleaning device 28 are arranged upstream of the third casting machine 40.
  • a closed composite 42 (see upper box in Fig. 30 ), which has formed from the previously produced composite material 11 and the solidified further plating material Pe applied to it, then hot rolling again by means of a downstream
  • the roll cladding device 22.1 arranged by the third casting machine 40 is carried out, so that a composite material 11 with a total of three layers is now produced by roll cladding.
  • a protective gas device can also be provided between the first casting machine 20, 120 and the second casting machine 20.
  • the effective range of the protective gas device 26 shown in FIG Fig. 1 , Fig. 12 and Fig. 21 each shown in connection with the second casting machine 20 extend further upstream of the second casting machine 20, and thus also include, for example, the cleaning device 28 and possibly also the heating device 27.
  • the carrier material in the form of the thin slab 16 is moved in an inert environment thanks to the protective gas device even before the application of the liquid plating material Pf, which prevents re-oxidation or the like on the surface of the thin slab 16.
  • the method according to the invention for producing the continuous strip-shaped composite material 11 can be carried out.
  • This method can be carried out automatically and preferably in a regulated manner as a function of at least one of the process variables mentioned at the outset.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Claims (28)

  1. Procédé destiné à la fabrication en continu d'une matière composite en forme de bande (11) comportant plusieurs couches, qui présente les étapes dans lesquelles :
    (i) on procure une matière de support (16) qui se déplace en continu dans une direction de transport (T), qui est constituée d'un matériau de base en acier et qui présente, dans sa section transversale, une surface médiane (17) qui est délimitée des deux côtés par des bords latéraux surélevés (18h) ; et
    (ii) on applique au moins une matière de placage liquide (P-f), qui est constituée d'un matériau de placage, à partir du haut sur la surface (17) de la matière de support qui est mise en mouvement (16) entre les bords latéraux surélevés (18h) ; dans lequel, par l'intermédiaire de la solidification de la matière de placage liquide, on obtient la formation d'un composite fermé (20) sur la matière de support (16) ;
    caractérisé
    en ce que l'on génère la matière de support (16) à l'étape (i), avec une première machine de coulée (12), sous la forme d'une barre continue (13) à partir d'acier en fusion ; dans lequel, à partir de la barre (13) que l'on génère avec la première machine de coulée (12), on obtient la formation d'une brame mince (16) par solidification ; et
    en ce que, dans une étape (iii), on soumet le composite fermé (21) dont on obtient la formation à partir de la matière de support (16) et de la matière de placage (P-e) qui a été solidifiée par-dessus à un laminage à chaud, d'une manière telle que l'on obtient en continu par l'intermédiaire d'un placage par laminage l'émergence d'une matière composite individuelle en forme de bande (11), respectivement une bande chaude qui est constituée par le matériau de base et par le matériau de placage.
  2. Procédé destiné à la fabrication en continu d'une matière composite en forme de bande (11) comportant plusieurs couches, qui présente les étapes dans lesquelles :
    (i) on procure une matière de support (16) qui se déplace en continu dans une direction de transport (T), qui est constituée d'un matériau de base en acier ;
    (ii) on applique au moins une matière de placage liquide (P-f) qui est constituée d'un matériau de placage, à partir du haut, sur une surface (17) de la matière de support (16) qui est mise en mouvement entre des mécanismes de limitation latérale (S) qui sont placés par l'intermédiaire d'une complémentarité de forme contre les bords latéraux (18) de la matière de support (16), pour de cette manière obtenir la formation d'une élévation temporaire des arêtes latérales aux bords latéraux (18) de la matière de support (16) ; dans lequel, par l'intermédiaire de la solidification de la matière de placage liquide (P-f) sur la matière de support (16) on obtient la formation d'un composite fermé (21) ;
    caractérisé
    en ce que l'on génère la matière de support (16) à l'étape (i) avec une première machine de coulée (12) sous la forme d'une barre continue (13) à partir d'acier en fusion ; dans lequel, à partir de la barre (13) que l'on génère avec la première machine de coulée (12), on obtient la formation d'une brame mince (16) par solidification ; et
    en ce que, dans une étape (iii), on soumet le composite fermé (21) dont on obtient la formation à partir de la matière de support (16) et de la matière de placage (P-e) qui a été solidifiée par-dessus à un laminage à chaud, d'une manière telle que l'on obtient en continu par l'intermédiaire d'un placage par laminage l'émergence d'une matière composite individuelle en forme de bande (11), respectivement une bande chaude qui est constituée par le matériau de base et par le matériau de placage.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la première machine de coulée (12) présente une lingotière (14) équipée de parois, qui peut être remplie à partir du haut entre les parois en question avec le matériau de base sous la forme d'un métal en fusion, ce dernier quittant la lingotière vers le bas à travers une ouverture pour pénétrer dans un système de guidage de barre (15) comportant un refroidissement.
  4. Procédé selon la revendication 1 ou 2, caractérisé en ce que la première machine de coulée (12) est réalisée sous la forme d'une machine de coulage de bande (120 ; machine BCT) qui comprend une bande transporteuse (121) qui est mise en mouvement; dans lequel le matériau de base est appliqué sous la forme d'acier en fusion (130) sur la bande transporteuse (121) qui est mise en mouvement et dans lequel on obtient ensuite par solidification la formation d'une brame mince (16).
  5. Procédé selon l'une quelconque des revendications 2 à 4, caractérisé en ce que la matière de support est soumise à une déformation plastique sous la forme de la brame mince (16) solidifiée de bout en bout, contre les deux bords latéraux (18) par l'intermédiaire d'un contact avec des cylindres de déformation (25s), d'une manière telle que l'on obtient ainsi, avant l'étape (ii), la formation des bords latéraux surélevés (18h) de la matière de support (16).
  6. Procédé selon la revendication 5, caractérisé en ce que l'on génère, par l'intermédiaire d'un contact des cylindres de déformation (25s) avec les bords latéraux (18) de la matière de support (16), sur le côté supérieur (17) de cette dernière, une surélévation des arêtes (k-d) en se référant à l'équation k > d dans laquelle :
    "k" représente la hauteur d'arête, c'est-à-dire la distance entre l'endroit le plus élevé de la surélévation et le côté inférieur de la matière de support (16) après la déformation ; et
    "d" représente l'épaisseur de la matière de support sous la forme de la brame mince (16) solidifiée de bout en bout, avant la déformation.
  7. Procédé selon la revendication 5 ou 6, caractérisé en ce que les cylindres de déformation (25s) présentent un profilage avec lequel on génère les bords latéraux surélevés (18h) de la matière de support (16).
  8. Procédé selon l'une quelconque des revendications 5 à 7, caractérisé en ce que les cylindres de déformation (25s) sont réalisées pour prendre une forme cylindrique ; dans lequel on peut régler un angle d'inclinaison (a) formé par un axe longitudinal (L) des cylindres de déformation (25s) par rapport à l'horizontale (H), dans le but de générer la surélévation des arêtes (k-d).
  9. Procédé selon la revendication 4, dans la mesure où elle se rapporte à la revendication 1, caractérisé en ce que la machine de coulage de bande (120) comprend au moins un mécanisme d'agitation (123) dans la direction transversale de type électromagnétique avec lequel on génère, dans l'acier en fusion (130) qui est appliqué sur la bande transporteuse (121), un courant dans la direction transversale par rapport à la bande transporteuse (121) qui est mise en mouvement (121), d'une manière telle que l'on obtient ainsi, à l'étape (i), la formation des bords latéraux surélevés (18h) de la matière de support (16).
  10. Procédé selon la revendication 9, caractérisé en ce que le mécanisme d'agitation (123) dans la direction transversale de type électromagnétique comprend un premier dispositif d'agitation (124) dans la direction transversale de type électromagnétique et un deuxième dispositif d'agitation (125) dans la direction transversale de type électromagnétique ; de préférence, en ce que les dispositifs d'agitation (124, 125) dans la direction transversale de type électromagnétique présentent respectivement une multitude d'enroulements qui s'étendent dans la direction transversale par dessus la bande transporteuse (121) qui est mise en mouvement.
  11. Procédé selon la revendication 9 ou 10, caractérisé en ce que la machine de coulage de bande (120) comprend au moins un mécanisme d'agitation (126) dans la direction longitudinale, de type électromagnétique qui est disposé - lorsqu'on regarde dans la direction de transport (T) de la matière de support (16) - en aval par rapport aux mécanismes d'agitation (123) dans la direction transversale, tout en étant disposé en position directement adjacente à ces derniers ; dans lequel, on génère, avec le mécanisme d'agitation (126) dans la direction longitudinale, de type électromagnétique, dans l'acier en fusion (130) qui est appliqué sur la bande transporteuse (121) qui est mise en mouvement, un courant dans la direction longitudinale par rapport à la bande transporteuse (121).
  12. Procédé selon l'une quelconque des revendications 2 à 11, caractérisé en ce que les mécanismes de limitation latérale (S) sont réalisés sous la forme de bandes latérales périphériques (19) ou sous la forme de règles de guidage.
  13. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que, à l'étape (iii), on applique la quantité de la matière de placage liquide (P-f) en fonction d'au moins un paramètre de traitement qui a été prédéterminé, en particulier en fonction de la vitesse de passage, de la largeur du placage et de la hauteur du placage de la matière composite (11) en forme de bande que l'on a générée ; de préférence, en ce qu'on règle de manière régulée la quantité appliquée de la matière de placage liquide (P-f) en fonction dudit au moins un paramètre de traitement qui a été prédéterminé ; de manière préférentielle, en ce que l'on met en service, pour l'application de la matière de placage liquide, une deuxième machine de coulée (20) qui est disposée - lorsqu'on regarde dans la direction de transport (T) de la matière de support (16) - en aval par rapport à la première machine de coulée (12).
  14. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'on chauffe la matière de support (16) avant l'étape (ii) ; de préférence, en ce que l'on nettoie la matière de support (16) avant l'étape (ii).
  15. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'on chauffe le composite fermé (21) dont on obtient la formation à partir de la matière de support (16) et de la matière de placage solidifiée (P-e) avant l'étape (iii).
  16. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que, avant la mise en œuvre de l'étape (iii), on place des mécanismes de limitation latérale (S) contre les bords latéraux (18) du composite fermé (21) dont on obtient la formation à partir de la matière de support (16) et de la matière de placage (P-e) qui a été solidifiée par-dessus ; et en ce que l'on applique ensuite une matière de placage liquide supplémentaire (P-f) constituée d'un matériau de placage, à partir du haut, sur un composite fermé (41) dont on obtient la formation à partir de la matière de support (16) et de la matière de placage (P-e) déjà solidifiée par-dessus, entre les mécanismes de limitation latérale (S) qui ont été placés ; dans lequel on met ensuite en œuvre l'étape (iii) pour la matière de support (16) et les matières de placages qui ont été solidifiées par-dessus (P-e) et l'on obtient ainsi en continu l'émergence d'une matière composite individuelle en forme de bande (11), respectivement une bande chaude qui comprend au total trois couches.
  17. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que, après la mise en œuvre de l'étape (iii), pour la matière composite individuelle en forme de bande (11) qui a été générée de cette manière en continu, on met en œuvre de manière répéter les étapes (ii) et (iii), d'une manière telle que, au cours d'une mise en œuvre répéter de l'étape (iii), on obtient ainsi en continu l'émergence d'une matière composite individuelle en forme de bande (11), respectivement une bande chaude qui comprend au total trois couches.
  18. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'on guide la matière de support (16) que l'on a préparée à l'étape (i) et/ou le composite fermé (21, 41, 42) qui a été formé à l'étape (ii), avant la mise en œuvre de l'étape (iii), dans une atmosphère de gaz de protection (36).
  19. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le matériau de base est constitué d'acier inoxydable.
  20. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le matériau de placage pour ladite au moins une matière de placage est constitué d'acier inoxydable ; de préférence, en ce que le matériau de placage et le matériau de base sont constitués respectivement par des aciers inoxydables différents.
  21. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le matériau de placage pour une matière de placage est constitué d'un métal non ferreux, de préférence d'aluminium, de cuivre ou d'un alliage à base de nickel.
  22. Dispositif (10) destiné à la fabrication en continu d'une matière composite (11) en forme de bande comportant plusieurs couches, qui comprend :
    une première machine de coulée (12) avec laquelle on génère une barre continue (13) à partir d'un matériau de base constitué d'acier; dans lequel on obtient, à partir de cette barre (13), par solidification, la formation d'une brame mince (16) qui est mise en mouvement dans une direction de transport (T) ; et
    au moins une cage de laminoir qui est disposée en ligne avec la première machine de coulée (12) et en aval par rapport à cette dernière ; dans lequel la brame mince (16) qui a été solidifiée de bout en bout, de la barre qui a été générée avec la première machine de coulée (12), peut être soumise à un laminage à chaud avec cette cage de laminoir ;
    dans lequel on prévoit au moins une deuxième machine de coulée (20) avec laquelle on peut appliquer une matière de placage liquide (P-f) qui est constitué d'un matériau de placage, à partir du haut, sur une surface (17) d'une matière de support sous la forme de la brame mince (16) qui a été solidifiée de bout en bout ; dans lequel la deuxième machine de coulée (20) - lorsqu'on regarde dans la direction de transport (T) de la brame mince (16) - est disposée en amont par rapport à la cage de laminoir ;
    dans lequel la cage de laminoir est réalisée sous la forme d'un mécanisme de placage par laminage (22.1) au moyen duquel on peut soumettre à un laminage à chaud un composite fermé (21) dont on obtient la formation à partir de la brame mince (16) et de la matière de placage (P-e) qui a été solidifiée par-dessus, d'une manière telle que l'on obtient ainsi en continu, par l'intermédiaire d'un placage par laminage, l'émergence d'une matière composite individuelle (11) en forme de bande, qui est constituée du matériau de base et du matériau de placage ; et
    dans lequel la première machine de coulée (12) est réalisée sous la forme d'une machine de coulage de bande (120) qui comprend une bande transporteuse (121) qui est mise en mouvement ; dans lequel, en position limitrophe par rapport à la bande transporteuse (121) on prévoit au moins un mécanisme d'agitation (123) dans la direction transversale de type électromagnétique, avec lequel on peut générer, dans le matériau de base constitué d'acier en fusion (130) qui a été appliqué sur la bande transporteuse (121) mise en mouvement, des courants dans la direction transversale par rapport à la bande transporteuse (121), d'une manière telle que l'on obtient de cette manière, pour la brame mince (16) dont on obtient la formation par l'intermédiaire d'une solidification de l'acier en fusion, la formation des bords latéraux surélevés (18h).
  23. Dispositif (10) selon la revendication 22, caractérisé en ce que le mécanisme d'agitation (123) dans la direction transversale comprend un premier dispositif d'agitation (124) dans la direction transversale de type électromagnétique et un deuxième dispositif d'agitation (125) dans la direction transversale de type électromagnétique ; dans lequel, avec ces dispositifs d'agitation (124, 125) on peut générer des courants dans l'acier en fusion (130) dans des directions respectivement opposées dans la direction transversale par rapport à la direction longitudinale de la bande transporteuse (121).
  24. Dispositif (10) selon la revendication 23, caractérisé en ce que la première machine de coulée, sous la forme de la machine de coulage de bande (120), présente un mécanisme d'agitation (126) dans la direction longitudinale de type électromagnétique disposé en amont par rapport au mécanisme d'agitation (123) dans la direction transversale - lorsqu'on regarde dans la direction de transport (T) de la brame mince (16) - avec lequel, dans le matériau de base constitué d'acier en fusion (130), qui peut être appliqué sur la bande transporteuse (121) qui est mise en mouvement, un courant dans la direction longitudinale par rapport à la bande transporteuse (121).
  25. Dispositif (10) selon l'une quelconque des revendications 22 à 24, caractérisé en ce qu'un mécanisme de chauffage (27) et/ou un mécanisme de nettoyage (28, 29) est/sont disposés - lorsqu'on regarde dans la direction de transport (T) de la brame mince (16) - en amont par rapport à la deuxième machine de coulée (20), au moyen desquels on chauffe, respectivement on nettoie la brame mince (16) dont on obtient la formation par solidification à partir de la barre (13) qui a générée avec la première machine de coulée (12).
  26. Dispositif (10) selon l'une quelconque des revendications 22 à 25, caractérisé en ce qu'une troisième machine de coulée (40) est disposée - lorsqu'on regarde dans la direction de transport (T) de la brame mince (16) - en aval par rapport à la deuxième machine de coulée (20) ; dans lequel on peut appliquer avec la troisième machine de coulée (40) une matière de placage liquide supplémentaire (P-f) constituée d'un matériau de placage, à partir du haut, sur le composite fermé (21) dont on obtient la formation à partir de la brame mince (16) et de la matière de placage (P-e) qui a déjà été solidifiée.
  27. Dispositif (10) selon l'une quelconque des revendications 22 à 26, caractérisé en ce que la/les deuxième/troisième machine(s) de coulée (20/40) présente(nt) un mécanisme de réglage de la quantité (30), au moyen duquel on peut régler, de préférence on peut réguler une quantité de la matière de placage liquide (P-f) qui a été appliquée sur une surface (17) de la brame mince (16) qui a été solidifiée de bout en bout ; de manière préférentielle, en ce que le mécanisme de réglage de la quantité (30) comprend un récipient intermédiaire (31) qui présente un coulisseau mobile et/ou une tige de quenouille mobile et/ou une chambre de pression qui comprend un réglage du vide variable.
  28. Dispositif (10) selon l'une quelconque des revendications 22 à 27, caractérisé par un mécanisme (26) faisant office de gaz de protection, qui est prévu entre la première machine de coulée (12, 120) et la deuxième machine de coulée (20) et/ou qui représente une partie de la deuxième/troisième machine de coulée (20/40) et/ou qui est disposé - lorsqu'on regarde dans la direction de transport (T) de la brame mince (16) - en aval par rapport à la deuxième/troisième machine de coulée (20/40) ; dans lequel le composite fermé (21, 41), dont on obtient la formation à partir de la matière de support sous la forme de la brame mince (16) et de la matière de placage solidifiée par-dessus (P-e), est guidé au sein de ce mécanisme faisant office de gaz de protection (26) dans une atmosphère d'un gaz de protection.
EP18207429.4A 2017-12-05 2018-11-21 Procédé et dispositif de fabrication d'un matériau composite en forme de bande Active EP3495086B1 (fr)

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CN110369683B (zh) * 2019-08-09 2020-06-02 大连理工大学 一种轴瓦减摩层铜合金充型装置和一种轴瓦双金属复合材料的制备方法
CN110340321A (zh) * 2019-08-21 2019-10-18 大连理工大学 一种底注式浇铸装置和一种碳素钢-蒙乃尔合金层状复合材料的制备方法
CN111168035A (zh) * 2020-01-16 2020-05-19 青岛力晨新材料科技有限公司 一种不锈钢/碳钢复合板的浇注系统以及浇注工艺
CN111230073B (zh) * 2020-01-16 2021-09-28 青岛力晨新材料科技有限公司 一种不锈钢/碳钢复合板的制作方法

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