EP2627464B1 - Procédé et installation de production à efficacité énergétique pour une bande d'acier laminée à chaud - Google Patents

Procédé et installation de production à efficacité énergétique pour une bande d'acier laminée à chaud Download PDF

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Publication number
EP2627464B1
EP2627464B1 EP11771071.5A EP11771071A EP2627464B1 EP 2627464 B1 EP2627464 B1 EP 2627464B1 EP 11771071 A EP11771071 A EP 11771071A EP 2627464 B1 EP2627464 B1 EP 2627464B1
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EP
European Patent Office
Prior art keywords
strand
thickness
roughing
casting
guiding device
Prior art date
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Not-in-force
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EP11771071.5A
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German (de)
English (en)
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EP2627464A1 (fr
Inventor
Gerald Hohenbichler
Josef Watzinger
Gerald Eckerstorfer
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Primetals Technologies Austria GmbH
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Primetals Technologies Austria GmbH
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    • 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
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/043—Curved moulds
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • B22D11/1246—Nozzles; Spray heads
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1282—Vertical casting and curving the cast stock to the horizontal
    • 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
    • B22D11/14—Plants for continuous casting
    • B22D11/142—Plants for continuous casting for curved casting
    • 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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
    • 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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
    • B22D11/225—Controlling or regulating processes or operations for cooling cast stock or mould for secondary cooling
    • 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
    • B21B45/004—Heating the product

Definitions

  • the invention relates to a method for the continuous or semicontinuous production of steel hot strip, which is rolled starting from a guided through a strand guide strand in a roughing train to an intermediate belt and subsequently in a finishing train to an end belt, according to claim 1 and a corresponding plant for Implementation of this method according to claim 17.
  • the cast strands are divided after casting and fed the separated strands or slabs without intermediate storage and cooling to ambient temperature of the rolling mill.
  • the strand emerging from the mold of the casting plant first passes through a strand guiding device directly following the mold.
  • the strand guiding device also referred to as "strand guiding corset”
  • the support rollers are rotatable about an axis orthogonal to the transport direction of the strand.
  • individual guide elements may also be used as static, e.g. run skid-shaped components.
  • these are arranged on both sides of the strand broad sides, so that the strand is guided by upper and lower guide element series and conveyed to a roughing mill.
  • the strand is supported not only by the strand guiding device, but also by a lower end portion of the mold, which is why the mold could also be regarded as part of the strand guiding device.
  • the Strangerstarrung begins at the upper end of the (continuous) mold at the bathroom mirror, the so-called "meniscus", the mold is typically about 1m long (0.3 - 1, 5m).
  • the strand exits vertically downward from the mold and is deflected into the horizontal.
  • the strand guiding device therefore has a course substantially curved over an angular range of 90 °.
  • the emerging from the strand guide device strand is reduced in thickness in the roughing mill (HRM, High-Reduction Mill), the resulting intermediate band is heated by means of a heater and rolled finished in a finishing train.
  • HRM roughing mill
  • the finishing train is hot rolled, that is, the rolling stock has a temperature above its recrystallization temperature during rolling. For steel this is the range above about 750 ° C, usually is rolled at temperatures up to 1200 ° C warm.
  • the metal is usually in the austenitic state, where the iron atoms are arranged cubic face centered.
  • the austenite area of a steel depends on the steel composition, but is usually above 800 ° C.
  • the steel strips produced are processed, inter alia, for motor vehicles, household appliances and the construction industry.
  • EP 0 415 987 B1 EP 1 469 954 B1 and DE 10 2007 058 709 A1 and WO 2007/086088 A1 known.
  • a steel strip of less than 0.8 mm thickness can be produced without winding problems, whereby uniform and repeatable mechanical properties can be ensured over the entire width and length of the steel strip.
  • Arvedi comprises a continuous casting line following a continuous caster with three roughing stands, two strip cutters, an induction furnace for intermediate heating of the pre-rolled intermediate strip, followed by a finishing train with five finishing stands.
  • the end strip emerging from the roughing train is cooled in a cooling section and wound up by means of three underfloor reels to form rolls of tape with a weight of up to 32 tons.
  • the underfloor coiler is preceded by a separation device in the form of a high-speed shear.
  • Such a system allows the production of hot strips with a final thickness between 0.8 and 4 mm in continuous operation.
  • Steel strip coils can be produced in semi-continuous operation at final strip thicknesses between 4 and 12 mm, however, according to the inventors' calculations for low carbon steels in continuous operation, a minimum specific minimum throughput of about 450 mm * m / min is required to use all five finishing stands in the finishing train can.
  • an excessively long strand support length of 17 m proves to be disadvantageous, that is the distance between the spout area of the mold described more precisely as "metallurgical length", specifically between the bath level of the liquid steel designated as "meniscus” and the end of the pre-rolling line A strand guide device.
  • the strand guiding device forms between the guide elements or the strand support rollers a partially curved receiving shaft for receiving the freshly cast (still having a liquid core) strand.
  • end of the strand guiding device is thus understood in the present context intended for strand contacting guide surface or surface line of the last of the roughing facing guide element or the last support roller of the upper guide elements series.
  • a strand support length of 17 m has the consequence that the cross-sectional core of the strand is completely solidified even before the emergence of the strand, namely several meters before the end of the strand guiding device.
  • the known from the ISP process processing advantage of a hot steel strip core is thus not or only insufficiently given.
  • the rolling of a completely solidified or cooler cast strand requires a much higher energy consumption than rolling a cast strand with a very hot cross-sectional core.
  • a kokillenfernere "Sumpfspitze" of the liquid sump is defined as that central cross-sectional area of the strand, in which the temperature just corresponds to the steel solidus temperature and then drops below this.
  • the temperature of the sump tip therefore corresponds to the solidus temperature of the respective steel grade (typically between 1300 ° C and 1535 ° C.
  • the sump tip d.i. the just still doughy cross-sectional core of the strand transported in the strand guiding device, is always as close as possible to the end of the strand guiding device and thus as close as possible to the entrance to the rough rolling mill.
  • the invention is therefore based on the object for a variety of steel grades, cooling parameters and strand thicknesses to find those casting and plant parameters, under which the sump tip of the strand as far as possible far away from the mold, i. can be kept as close to the end of the strand guide device.
  • the casting speed or the volume flow passing through the strand guiding device may not be too large either In such a case, a shifting out of the sump tip on the strand guide device beyond and thus bulging and bursting of the strand could take place.
  • a combination of these casting parameters ensures that the bottom tip of the strand always reaches almost to the end of the strand guiding device, regardless of the respective material-quality-dependent maximum casting speeds.
  • the strand has a sufficiently hot cross-sectional core during its thickness reduction at least in the first of the strand guide device downstream rolling mill, to be rolled with relatively low energy consumption and ensuring high production quality.
  • a rough rolling of the strand into an intermediate strip in at least four rolling passes, ie using four roughing stands, preferably in five rolling passes, ie using five roughing stands. While in prior art methods usually a rough rolling of the billet takes place in three rolling passes, the energy efficiency of the casting / rolling process can be further increased by carrying out according to the invention four or five rolling passes. By four or five rolling passes are performed in rapid succession, the casting heat still in the strand is optimally utilized.
  • a very narrow thickness range of the intermediate strip (between 3 and 15 mm, preferably between 4 and 10 mm) is achieved, so that a heating device arranged downstream of the roughing line, eg Inductive Querfeldicarmungsofen, can be designed exactly to a specific thickness range of the intermediate band. Energy losses due to a too large dimensioning of the recording of the heater can thus be avoided.
  • the four or five rolling passes taking place in the rough rolling mill take place within a maximum of 80 seconds, preferably within a maximum of 50 seconds.
  • the first rolling pass in the rough rolling takes place within a maximum of 5.7 minutes, preferably within not more than 5.3 minutes from the beginning of solidification of the liquid strand in the casting plant. Ideally, the first one will happen Rolling pass in the roughing mill within a maximum of 4.8 minutes, even at casting speeds in the range of 4 m / min.
  • a reduction of the thickness of the strand by 35-60%, preferably by 40-55% takes place in the roughing mill per rolling pass.
  • an intermediate strip with a thickness of approximately 3 to 15 mm, preferably with a thickness of 4 to 10 mm leaves the rough rolling line 4.
  • the intermediate strip is rolled in a previously described ESP system according to the prior art to a thickness between 10 and 20 mm.
  • a temperature loss rate of the intermediate strip emerging from the rough rolling mill is below a maximum of 3 K / m, preferably below a maximum of 2.5 K / m. It would also be conceivable to realize a temperature loss rate ⁇ 2 K / m.
  • a heating of the leaked out of the roughing intermediate belt by means of a inductive heating, preferably in the transverse field heating method, starting at a temperature above 725 ° C, preferably above 850 ° C to a temperature of at least 1100 ° C, preferably to a temperature above 1180 ° C.
  • the heating of the intermediate band within a period of 4 to 30 seconds, preferably within a period of 5 to 15 seconds.
  • the passage of time between the first pass and the inlet into the heating device does not exceed 110 seconds for intermediate strip thicknesses of 5-10 mm, preferably not longer than 70 seconds.
  • rolling to final thicknesses of ⁇ 1 mm is also possible.
  • the rolling passes carried out within the finishing train through the five or four finishing stands take place within a maximum period of 12 seconds, preferably within a maximum period of 8 seconds.
  • liquid core reduction (LCR) thickness reduction of the strand to the contacting predetermined guide elements of the strand guiding device relative to a longitudinal axis of the strand (transversely) adjustable with an adjustment of the guide elements depending on the material of the strand and / or the casting speed is made to reduce the strand thickness by up to 30 mm.
  • the strand thickness quasi-static i. shortly after the start of pouring or the casting of a casting sequence, as soon as the "leading strand area", referred to as the "strand head”, has passed the guide elements intended for reducing the thickness, it is set once.
  • the strand thickness may be dynamically adjustable, ie to be arbitrarily variable during the casting process or during the passage of the strand through the strand guiding device.
  • the dynamic setting is then preferably set by the operating team depending on the steel grade and the actual casting speed, if this changes only on a case-by-case basis.
  • the LCR thickness reduction is between 0 and 30 mm, preferably between 3 and 20 mm.
  • this function can also be taken over by an automated device, especially if very frequent changes in thickness or speed would be usual or necessary.
  • Corridor areas are specified for the speed factor K, within which a casting operation can be carried out efficiently and meaningfully.
  • a coolant preferably water
  • the application of the coolant to the Strand takes place by means of an injection device, which may comprise any number of spray nozzles.
  • influencing factors for the speed of strand cooling are the design of the guide elements or strand support rollers of the strand guide device (internal or shell-cooled strand support rollers), the arrangement of the support rollers, in particular the ratio of the support roller diameter to the distance between adjacent support rollers, the spray character of the nozzles and the coolant or water temperature.
  • a specific speed factor K takes place in particular as a function of the steel grade or the cooling characteristic of the strand.
  • a speed factor K lying in the upper region of a corridor region proposed according to the invention can be used, while for slower steel grades a velocity factor K lying in the middle or lower region of a corridor region proposed according to the invention is used.
  • steady-state plant operation merely serves to delimit against a gating phase during which the molten steel initially passes through the strand guiding device and during which the casting speed is subject to extraordinary parameters or, on the other hand, also to intermediate acceleration phases for increasing throughput and / or operationally required Delay phases (when on the Liquid steel delivery must be maintained or because of the strand quality, lack of cooling water, ).
  • the detailed / refined choice of the speed factor is in addition to the strand support length in particular the carbon content of the cast steels, their solidification or conversion characteristics, their strength or ductility properties, etc. dependent.
  • An operation according to the inventively proposed speed factors K allows optimum utilization of the casting heat contained in the strand for the subsequent rolling process and an optimization of the material throughput and thus a productivity advantage (with operational decrease of the casting speed, the strand thickness can be increased and thereby the material throughput can be increased).
  • Claim 17 is directed to a system for carrying out the method according to the invention for the continuous or semi-continuous production of steel strip, comprising a casting plant with a mold, a subordinate strand guiding device, a downstream Vorwalz Sounds, one of these downstream, inductive heating and one of these downstream finishing train, said the strand guiding device has a lower series of guide elements and a parallel or converging arranged upper series of guide elements and between the two guide element series a for receiving the emerging from the caster strand provided receiving shaft is formed, which is at least partially tapered by forming different distances between opposing guide elements to each other in the transport direction of the strand and thereby the strand is Dickenreduzierbar.
  • the clear receiving width of the receiving shaft is between 95 and 110 mm, preferably between 102 and 108 mm at its input to the mold, that the receiving shaft at its end facing the roughing mill has a clear receiving width of between 60 and 60 mm corresponding to the thickness of the strand 95 mm, preferably between 70 and 85 mm, wherein a between the bath level of the caster and the Vorwalzides facing the end of the receiving shaft strand guide device measured strand support length between 12 m and 15.5 m, preferably in a range between 13 and 15 m, preferably between 14.2 m and 15 m, and wherein a control device is provided, by means of which the casting speed of the strand in a range between 3.8 - 7 m / min is durable, and that the roughing mill comprises four or five roughing stands.
  • a thermal cover is provided between the end of the receiving shaft and the strand guide device and an inlet region of the roughing, at least partially surrounding a conveyor device provided for transporting the strand and thus a Cooling of the strand delayed.
  • the Heating device is designed as an inductive transverse field heating furnace, by means of which the strand, starting at a temperature above 725 ° C, preferably above 850 ° C to a temperature of at least 1100 ° C, preferably to a temperature above 1180 ° C can be heated.
  • the finishing train comprises four or five finishing mills, by means of which an intermediate strip emerging from the roughing train can be reduced to an end strip with a thickness ⁇ 1.5 mm, preferably ⁇ 1.2 mm.
  • the finishing mills are arranged at intervals of ⁇ 7 m, preferably at intervals of ⁇ 5 m to each other, the distances between the working rolling axes of the finishing mills are measured.
  • certain guide elements are adjustable to reduce the thickness of the strand and thereby a clear receiving width of the receiving shaft is reduced or increased, the strand thickness or the clear receiving width depending on the material of the strand and / or the casting speed is adjustable.
  • the adjustable guide elements in one of the mold half facing the front half preferably in one of Mold facing front quarter of the longitudinal extent of the strand guide device are arranged.
  • a work roll axis of the strand guide device next adjacent first roughing stand of the roughing maximum 7 m, preferably maximum 5 m after the end of the strand guiding device is arranged.
  • a feed end of the heating device facing the rough rolling mill is arranged a maximum of 25 m, preferably a maximum of 19 m, of the work roll axis of the roughing stand closest to the heating device.
  • Fig.1 shows schematically a plant 1, by means of which a method according to the invention for the continuous or semi-continuous production of steel hot strip is feasible.
  • a vertical casting machine with a mold 2 are cast in the strands 3, which have a strand thickness d between 95 and 110 mm, preferably a strand thickness d between 102 and 108 mm at the end of the mold 2.
  • the mold 2 is preceded by a pan 39, which feeds a distributor 40 with liquid steel via a ceramic inlet nozzle.
  • the distributor 40 subsequently charges the mold 2, to which a strand guiding device 6 adjoins.
  • a rough rolling 4 which may consist of a - as here - or of several scaffolds and in which the strand 3 is rolled to an intermediate thickness.
  • a rough rolling 4 which may consist of a - as here - or of several scaffolds and in which the strand 3 is rolled to an intermediate thickness.
  • the transformation of cast structure into fine-grained rolling structure takes place.
  • the plant 1 further comprises a number of components such as descaling devices 41, 42 and Fig.1 Separation devices not shown, which essentially correspond to the prior art and which is therefore not discussed in detail at this point.
  • the severing devices for example in the form of high-speed shears, can be arranged at any position of the plant 1, in particular between the rough rolling mill 4 and the finishing train 5 and / or in a downstream region of the finishing train 5.
  • the heater 7 is designed in the present embodiment as an induction furnace.
  • a transverse field heating induction furnace is used, which makes the system 1 particularly energy efficient.
  • the heater 7 could also be used as a conventional oven, e.g. be performed with flame treatment, or as a mixing furnace, consisting of HC fuel-fired and inductive segments.
  • the intermediate band 3 ' is brought relatively uniformly over the cross section to a desired inlet temperature for the inlet to the finishing train 5, wherein the inlet temperature usually depending on the steel grade and subsequent rolling in the finishing train 5 between 1000 ° C and 1200 ° C is.
  • the finish rolling in the multi-stand finishing train 5 After the heating in the heating device 7, after an optional intermediate descaling, the finish rolling in the multi-stand finishing train 5 to a desired final thickness and final rolling temperature and then a belt cooling in a cooling section 18 and immediately before the underfloor reel 19, the end band 3 "clamped between driving rollers 20, the lead the end band" and keep under tension.
  • One between the meniscus 13, d.i. the bath level of the caster 2 and a strand support length L measured at the end of the strand guide device 6 facing the rough rolling mill 4 is less than or equal to 16.5 m and greater than or equal to 10 m, namely between 12 m and 15.5 m.
  • the strand support length L is in this case between the meniscus 13 of the mold or the casting plant 2 and the axis of the last, a Vorwalz No 4 facing support roller and described in more detail below upper guide elements series 10 (viewed in a side view of Appendix 1 to the Axes of the roles parallel viewing direction according to Fig.1 ).
  • the strand support length L is at a relation to the center of the radius of curvature of the strand 3 and the strand guide device 6 outer broad side of the strand 3 and the strand guiding device 6 (and a portion of the interior of the mold 2) measured.
  • Fig.2 a concentric to the strand support length L auxiliary dimension line L 'located.
  • a casting speed of the strand 3 (which is essentially also the speed of the strand 3 when passing through the strand guiding device 6, ie also the speed of the strand 3 at the end 14 of the strand guiding device) is measured during stationary continuous operation 6), in a range of 3.8-7 m / min, preferably in a range of 4.2-6.6 m / min.
  • a combination of these parameters ensures that an initially defined sump tip of the strand 3, regardless of the respective material quality-dependent maximum casting speeds, always approaches relatively close to the end of the strand guiding device and thereby the strand 3 with relatively low energy expenditure and ensuring high production quality to a desired intermediate thickness - And subsequently can also be finished.
  • the strand support length L is less than or equal to 15.5 m, preferably the strand support length L is in a range between 13 and 15 m.
  • the strand support length L is at least 12 m, preferably at least 13 m.
  • a roughing of the strand 3 to an intermediate strip 3 takes place in at least four rolling passes, that is, using, four roughing stands 4 1 , 4 2 , 4 3 , 4 4 , preferably in five rolling passes, ie using five roughing stands 4 1 , 4 2 , 4 3 , 4 4 , 4 5 takes place.
  • the four or five rolling passes taking place in the rough rolling mill 4 take place within a maximum of 80 seconds, preferably within a maximum of 50 seconds.
  • the first rolling pass in the roughing mill 4 takes place within a maximum of 5.7 minutes, preferably within a maximum of 5.3 minutes, from the start of solidification of the liquid strand present in the casting installation 2.
  • the first pass in the pre-rolling line 4 takes place within a maximum of 4.8 minutes, even at a low continuous casting speed of 4 m / min.
  • the surface of the strand 3 has in this area on average a temperature> 1050 ° C, preferably> 1000 ° C.
  • a preferably hinged thermal cover is provided to hold the heat as possible in the strand 3.
  • the thermal cover surrounds a conveying device provided for transporting the strand 3, usually designed as a roller belt, at least in sections.
  • the thermal cover can surround the conveying device from above and / or from below and / or laterally.
  • a temperature loss rate of the intermediate strip 3 'emerging from the roughing train 4 is below a maximum of 3 K / m, preferably below a maximum of 2.5 K / m. It would also be conceivable to realize temperature loss rates ⁇ 2 K / m. Such a temperature loss rate is achieved by heat radiation and / or convection from the intermediate belt and can be controlled by an appropriate choice of thermal boundary conditions (covers, tunnels, cold air, humidity, ...) and transport speed or mass flow.
  • the heating of the intermediate strip 3 'takes place within a period of 4 to 30 seconds, preferably within a period of 5 to 15 seconds.
  • a strand 3 which is 80 mm thick when emerging from the strand guiding device 6 and which in the rough rolling line 4 becomes an intermediate strip 3 'with a thickness is reduced by 5 mm, after 260 seconds at the latest, preferably after 245 seconds from exiting the mold 2 is introduced into the inductive heating device 7 and that at exit from the strand guide device 6 95 mm thick strand 3, which in the roughing mill 4 to an intermediate strip 3 'is reduced with a thickness of 5.5 mm, at the latest after 390 seconds, preferably after at the latest 335 seconds from the exit from the mold 2 in the inductive heating device 7 is introduced.
  • a finish rolling of the heated intermediate strip 3 'in the finishing train 5 is preferably carried out in four rolling passes, ie using four finishing stands 5 1 , 5 2 , 5 3 , 5 4 or in five rolling passes, ie using five finishing stands 5 1 , 5 second , 5 3 , 5 4 , 5 5 to an end band 3 "having a final thickness of ⁇ 1.5 mm, preferably ⁇ 1.2 mm, and rolling to final thicknesses of ⁇ 1 mm is also possible by means of a method according to the invention.
  • the finishing mills 5 1 , 5 2 , 5 3 , 5 4 , 5 5 are each arranged at intervals of ⁇ 7 m, preferably at intervals of ⁇ 5 m to each other (measured between the working rolling axes of the finishing mills 5 1 , 5 2 , 5 3 , 5 4 , 5 5 ).
  • the rolling passes carried out within the finishing train 5 carried out within a period of not more than 12 seconds, preferably within a maximum period of 8 seconds.
  • the end strip 3 is subsequently cooled to a reel temperature of between 500 ° C. and 750 ° C., preferably 550 ° C. and 650 ° C., and wound up into a bundle
  • the end strip 3 'or the intermediate strip is severed 3 'or the strand 3 in a direction transverse to the transport direction 15 extending Direction and a ready reeling of the rolling mill side loose end band 3 '.
  • a deflection and stacking of the end strip 3 " would also be possible.
  • the strand guiding device 6 comprises a plurality of predetermined for the passage of the strand 3 guide segments 16 according to Figure 3 , each one of (in Figure 3 not shown) lower series of guide elements 9 and a parallel or converging arranged upper series of guide elements 10 are constituted.
  • Each guide element of the lower guide element series 9 is assigned to an opposite guide element of the upper guide element series 10.
  • the guide elements are thus arranged in pairs on both sides of the broad sides of the strand 3.
  • the guide elements 9, 10 are designed as rotatably mounted support rollers.
  • the upper and lower einsetti- or support roller series 9, 10 can each be in turn divided into (sub-) series specific support rollers with different diameters and / or center distances.
  • the guide elements of the upper guide elements series 10 are selectively depth-adjustable or can be approximated to the guide elements of the lower guide elements series 9.
  • An adjustment of the guide elements of Upper guide elements series 10 and thus a change of the clear receiving cross-section 12 of the strand guide device 6 can be done for example by means of a hydraulic drive.
  • One of the desired strand thickness d corresponding and measured between opposing upper and lower guide elements clear receiving width 12 of the receiving shaft 11 of the strand guide device 6 could, for example, be reduced from 100 mm to a range between 70 and 90 mm.
  • the strand 3 e.g. three to eight guide elements (pairs) of one of the mold 2 facing - but not necessarily adjoining the mold 2 - first guide segment 16 'adjustable.
  • several juxtaposed guide segments 16 can be used for LCR thickness reduction, which connect directly or indirectly to the mold.
  • the strand thickness d or the light receiving width 12 can be set as a function of the material of the strand 3 and / or as a function of the casting speed.
  • the adjustment of the respective guide elements 9, 10 takes place in a direction substantially orthogonal to the transport direction of the strand extending direction, wherein both the upper guide elements 10 and the lower guide elements 9 can be adjustable.
  • upper guide elements 10 are hinged to corresponding support members 17, which are preferably hydraulically adjustable.
  • the (hydraulically) adjustable LCR guide elements 9, 10 are preferably arranged in one of the mold 2 facing the front half, preferably in a mold 2 facing the front quarter of the longitudinal extension of the strand guiding device 6.
  • the setting of the strand thickness d or the clear receiving width 12 can be quasi-static, ie once, shortly after casting start, as soon as one of the Vorwalz Sounds 4 facing head portion of the cast strand 3 reaches the end of the strand guide device 6 or has passed the LCR guide elements, or dynamically, ie during the casting process or during the continuous quasi-stationary passage of the strand 3 by the strand guiding device 6.
  • this is as often as possible during the passage of a strand 3 through the strand guiding device 6, using a bottom based on Figure 7 explained relationship as a guideline, changed.
  • Figure 4 shows a diagram for systems according to the prior art, based on which maximum allowable casting speeds for strands with different thicknesses are readable.
  • the casting speed in the unit [m / min] is plotted on the ordinate a material-specific solidification factor k, which carries the unit [mm / ⁇ min].
  • the solidification factor k is between 24-27 mm / ⁇ min, preferably between 25 and 26 mm / ⁇ min.
  • Figure 5 shows a diagram with Figure 4 corresponding abscissa and ordinate scales, but for strands which in a strand support device 6 according to the invention proposed, in metallurgical terms particularly advantageous strand support length L of 15.25 m to be poured.
  • the pouring characteristics according to the invention described below are chosen purely by way of example and are not intended to be limiting. In principle, there is no fixed speed value for each strand thickness, but always a corresponding velocity range under which the casting process can be reasonably conducted. Likewise, the strand support length L is not set to a certain value such as 15.25 m Figure 4 but the calculations and considerations of the inventors have shown that strand support lengths L in the range between 12 and 16.5 m already allow significant advantages over known systems.
  • Figure 6 shows a diagram plotted on the ordinate, the maximum casting speed in the unit [m / min], while on the abscissa, the strand support length L and the "metallurgical length" with the unit [m] is plotted.
  • Figure 7 illustrates the relationship of the strand thickness d with the casting speed v c , wherein an adjustment of (target) casting speeds v c or (target) strand thickness d can be determined using speed factors K proposed according to the invention.
  • the following information refers to a steady-state operation of the plant, which includes operating phases with a duration of> 10 minutes in the present context during which the casting speed v c (as opposed to, for example, a gating phase) remains substantially constant.
  • the choice of the speed factor K in addition to the strand support length L in particular depends on the C content of the cast steels or on their cooling characteristics.
  • Fast-setting steel grades allow the system to operate at relatively high casting speeds v c , while lower casting speeds v c are to be selected for slower-setting steel grades in order to prevent bulging and bursting of the strand in the area of the swamp tip.
  • the following tables refer to strands cast steel grades that are "hard” to cool, ie fast solidify and the "medium hard” to cool, ie solidify a little slower.
  • Corridor areas are specified for the speed factor K, within which a casting operation can be carried out efficiently and meaningfully.
  • a strand support length-specific corridor area is limited in each case by a speed factor K_upperLimit and a speed factor K_lowerLimit according to the following tables.
  • the choice of the speed factor K depends on the strand support length L and on the steel grade, in particular on the carbon content of the cast steels their solidification or conversion characteristics, their strength or ductility properties and other material characteristics.
  • a coolant preferably in the region of the strand guiding device 6 (between the lower end of the mold 2 and the end 14 of the strand guiding device 6 facing the rough rolling line 4), is preferably used Water, upset.
  • essentially the same construction and boundary conditions of the sprayer and the strand guide device 6 could be about 3 to 4 liters for realizing a hard cooling, 2 to 3 liters to realize a medium-hard cooling and 1 to 2 liters of coolant per to realize a soft cooling kg of extruded steel are applied.
  • Figure 7 shows a diagram with corresponding to the above-mentioned speed factors K curves 32-37.
  • the strand thickness d (measured at the end of the strand guiding device 6 or when entering the rough rolling mill 4) is plotted in the unit [mm], the ordinate represents the casting speed in the unit [m / min].
  • the uppermost characteristic curves for a specific strand support length L correspond to the speed factors K_upperLimit listed above in tabular form.
  • characteristic 32 corresponds to a speed factor K of 35200 and curve 35 a speed factor K of 44650.
  • the curves 32 and 35 thus correspond to rapidly solidifying steel grades, which under Compliance with standardized quality criteria allow a high casting speed and heat dissipation.
  • the grades 36 and 37 corresponding steel grades are not so "hard” due to their slower solidification, i. not as quickly coolable as a grade 35 corresponding steel grade.
  • the grades 33 and 34 corresponding steel grades are not as cool as a corresponding characteristic 32 steel grade.
  • the cooling speed significantly determines the position of the sump tip within the strand 3.
  • specific curves 32-37 lying casting speed ranges are to be avoided in order to avoid bulging and bursting of the strand 3 in the area of the sump tip.
  • the characteristics 32-37 represent limit casting speed curves for different grades of steel.
  • the casting speed v c for operational reasons is reduced to 5.5 m / min, would be done according to arrow 35 "raising the strand thickness d to approximately 90 mm to keep the bottom of the strand 3 strand at the end of the strand guide device 6 and an optimal utilization of the casting heat for the subsequent rolling process
  • raising the strand thickness d to approximately 93 mm is indicated in order to keep the sump tip of the strand 3 at the end of the strand guiding device 6 hold.
  • the strand thickness d must be correspondingly reduced in order to eliminate the risk of bulging of the strand 3 in the area of the sump tip.
  • these may be, for example, irregularities in the area of the slide or mold, in particular at the bath level of the mold or deviations in the line temperature from predetermined values, detected by sensors.
  • a change in the strand thickness d can be effected by a previously described dynamic LCR thickness reduction by means of the LCR guide segment 16 '.
  • the operating team is notified by an output device in order to reduce the liquid core reduction (LCR) so that the strand thickness d increases, and so the context of the invention or a respective Corridor area to reach again.
  • LCR liquid core reduction
  • a corresponding target casting speed v c can be selected or, starting from a desired casting speed v c the strand thickness d be varied accordingly.
  • the strand thickness d can be increased as the casting speed v c decreases, thereby increasing the material throughput and thus optimizing it.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Claims (26)

  1. Procédé de production continue ou semi-continue d'une bande d'acier laminée à chaud qui, en partant d'une barre de coulée (3) guidée à travers un dispositif de guidage de barre (6), est laminée dans un train dégrossisseur (4) pour obtenir une bande intermédiaire (3') et par la suite dans un train finisseur (5) pour obtenir une bande finie (3"), comprenant les étapes suivantes :
    - coulée d'une barre (3) dans une lingotière (2) d'une installation de coulée, la barre (3) sortant de la lingotière (2) et entrant dans le dispositif de guidage de barre (6) présentant une épaisseur (d) comprise entre 95 à 110 mm, de préférence une épaisseur (d) comprise entre 102 et 108 mm, et la barre (3) étant réduite selon un procédé de réduction sur coeur liquide (Liquid Core Réduction - LCR), au moyen du dispositif de guidage de barre (6) adjacent et à coeur liquide de la barre (3), à une épaisseur (d) comprise entre 60 et 95 mm, de préférence à une épaisseur (d) comprise entre 70 et 85 mm,
    - une longueur de soutien de la barre (L) mesurée entre le ménisque (13), c.-à-d. le niveau du bain dans la lingotière (2), et une extrémité (14) du dispositif de guidage de barre (6) orientée vers le train dégrossisseur (4) étant de 12 à 15,5 m, de préférence comprise entre 13 et 15 m, mieux encore entre 14,2 et 15 m,
    - et une vitesse de coulée (vc) étant comprise entre 3,8 et 7 m/min,
    - et un dégrossissage de la barre (3) dans le train dégrossisseur (4) pour obtenir une bande intermédiaire (3') est réalisé en au moins quatre passes de laminage, c.-à-d. en utilisant quatre cages dégrossisseuses (41, 42, 43, 44), de préférence en cinq passes de laminage, c.-à-d. en utilisant cinq cages dégrossisseuses (41, 42, 43, 44, 45),
    - les passes de laminage réalisées dans le train dégrossisseur (4) étant réalisées dans un délai d'au plus 80 secondes, de préférence dans un délai d'au plus 50 secondes.
  2. Procédé selon la revendication 1, caractérisé en ce que la première passe de laminage dans le train dégrossisseur (4) est réalisée dans un délai d'au plus 5,7 minutes, de préférence dans un délai d'au plus 5,3 minutes dès le début de la solidification de la barre liquide se trouvant dans la lingotière (2).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'entre l'extrémité (14) du dispositif de guidage de barre (6) et une zone d'entrée du train dégrossisseur (4), un seul refroidissement de la barre (3), du fait de la température ambiante, est autorisé.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce qu'une réduction de l'épaisseur (d) de la barre (3) de 35-60 %, de préférence de 40-55 % par passe de laminage est réalisée dans le train dégrossisseur (4).
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce qu'un taux de déperdition de température de la bande intermédiaire (3') sortant du train dégrossisseur (4) est inférieur à un maximum de 3 K/m, de préférence inférieur à un maximum de 2,5 K/m.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce qu'un réchauffement de la bande intermédiaire (3') sortant du train dégrossisseur (4) est réalisé au moyen d'un dispositif de chauffage (7) inductif, de préférence selon le procédé de chauffage par champ transversal, en commençant à une température supérieure à 725°C, de préférence supérieure à 850°C, jusqu'à une température d'au moins 1100°C, de préférence jusqu'à une température supérieure à 1180°C.
  7. Procédé selon la revendication 6, caractérisé en ce que le réchauffement de la bande intermédiaire (3') est réalisé durant une période de 4 à 30 secondes, de préférence durant une période de 5 à 15 secondes.
  8. Procédé selon les revendications 1 et 6, caractérisé en ce que, lorsque précisément 4 passes de laminage sont réalisées dans le train dégrossisseur (4), il est prévu que le temps s'écoulant entre la première passe et l'entrée dans le dispositif de chauffage (7), pour des épaisseurs de bande intermédiaire de 5-10 mm, ne dépasse pas 110 secondes, de préférence ne dépasse pas 70 secondes.
  9. Procédé selon l'une des revendications 1 à 8, caractérisé en ce qu'un laminage final de la bande intermédiaire (3') réchauffée dans le train finisseur (5) est réalisé en quatre passes de laminage, c.-à-d. en utilisant quatre cages finisseuses (51, 52, 53, 54), ou en cinq passes de laminage, c.-à-d. en utilisant cinq cages finisseuses (51, 52, 53, 54, 55), pour obtenir une bande finie (3") présentant une épaisseurs < 1,5 mm, de préférence < 1,2 mm.
  10. Procédé selon la revendication 9, caractérisé en ce que les passes de laminage effectuées dans le train finisseur (5) sont réalisées durant une période d'au plus 12 secondes, de préférence durant une période d'au plus 8 secondes.
  11. Procédé selon l'une des revendications 1 à 10, caractérisé en ce que pour réduire l'épaisseur de la barre (3) selon le procédé LCR, et pour venir en contact de ladite barre, des éléments de guidage (9, 10) prédéterminés du dispositif de guidage de barre (6) sont réglables par rapport à un axe longitudinal de la barre (3), un réglage desdits éléments de guidage (9, 10) étant opéré en fonction du matériau de la barre (3) et/ou de la vitesse de coulée.
  12. Procédé selon la revendication 11, caractérisé en ce que l'épaisseur de barre (d) est réglable de façon quasi statique après le début d'une séquence de coulée, c.-à-d. peu de temps après que la barre (3) soit sortie de la lingotière (2).
  13. Procédé selon la revendication 11, caractérisé en ce que l'épaisseur de barre est réglable de façon dynamique, c.-à-d. elle est variable selon le choix pendant le processus de coulée ou pendant le passage de la barre (3) dans le dispositif de guidage de barre (6).
  14. Procédé selon l'une des revendications 1 à 13, caractérisé en ce que, pour des barres d'acier devant être refroidies au moyen d'un système d'arrosage sous pression dans la région du dispositif de guidage de barre (6) jusqu'à l'état dur, c.-à-d. en appliquant 3 à 4 litres de réfrigérant par kg de barre d'acier, et en fonctionnement stationnaire-continu de l'installation, le rapport épaisseur de barre (d) mesurée en [mm] / vitesse de coulée (vc) mesurée en [m/min] est respecté selon la formule vc = K / d2, un facteur de vitesse (K) contenu dans la formule se situant pour une longueur de soutien de la barre (L) de 13 m dans une fourchette allant de 30000 à 35200, de préférence dans une fourchette allant de 32500 à 35200, tandis que pour une longueur de soutien de la barre (L)=16,5 m, le facteur de vitesse (K) se situe dans une fourchette allant de 38000 à 44650, de préférence dans une fourchette allant de 41000 à 44650, sachant que pour déterminer des vitesses de coulée (cible) (vc) ou épaisseurs de barre (cible) (d) pour des installations avec des longueurs de soutien de la barre (L) comprises entre les longueurs L=13 m et L=16,5 m, une interpolation entre les fourchettes ci-dessus peut être effectuée.
  15. Procédé selon l'une des revendications 1 à 13, caractérisé en ce que, pour des barres d'acier devant être refroidies au moyen d'un système d'arrosage sous pression dans la région du dispositif de guidage de barre (6) jusqu'à l'état mi-dur, c.-à-d. en appliquant 2 à 3,5 litres de réfrigérant par kg de barre d'acier, et en fonctionnement stationnaire-continu de l'installation, le rapport épaisseur de barre (d) mesurée en [mm] / vitesse de coulée (vc) mesurée en [m/min] est respecté selon la formule vc = K / d2, un facteur de vitesse (K) contenu dans la formule se situant pour une longueur de soutien de la barre (L) de 13 m dans une fourchette allant de 28700 à 33800, de préférence dans une fourchette allant de 31250 à 33800, tandis que pour une longueur de soutien de la barre (L)=16,5 m, le facteur de vitesse (K) se situe dans une fourchette allant de 36450 à 42950, de préférence dans une fourchette allant de 39700 à 42950, sachant que pour déterminer des vitesses de coulée (cible) (vc) ou épaisseurs de barre (cible) (d) pour des installations avec des longueurs de soutien de la barre (L) comprises entre les longueurs L=13 m et L=16,5 m, une interpolation entre les fourchettes ci-dessus peut être effectuée.
  16. Procédé selon l'une des revendications 1 à 13, caractérisé en ce que, pour des barres d'acier devant être refroidies au moyen d'un système d'arrosage sous pression dans la région du dispositif de guidage de barre (6) jusqu'à l'état doux, c.-à-d. en appliquant moins de 2,2 litres de réfrigérant par kg de barre d'acier, et en fonctionnement stationnaire-continu de l'installation, le rapport épaisseur de barre (d) mesurée en [mm] / vitesse de coulée (vc) mesurée en [m/min] est respecté selon la formule vc = K / d2, un facteur de vitesse (K) contenu dans la formule se situant pour une longueur de soutien de la barre (L) de 13 m dans une fourchette allant de 26350 à 32359, de préférence dans une fourchette allant de 29350 à 32359, tandis que pour une longueur de soutien de la barre (L)=16,5 m, le facteur de vitesse (K) se situe dans une fourchette allant de 34850 à 41200, de préférence dans une fourchette allant de 38000 à 41200, sachant que pour déterminer des vitesses de coulée (cible) (vc) ou épaisseurs de barre (cible) (d) pour des installations avec des longueurs de soutien de la barre (L) comprises entre les longueurs L=13 m et L=16,5 m, une interpolation entre les fourchettes ci-dessus peut être effectuée.
  17. Installation pour la mise en oeuvre d'un procédé de production continue ou semi-continue d'une bande d'acier laminée à chaud selon l'une des revendications 1 à 16, comprenant une lingotière (2), en aval de celle-ci un dispositif de guidage de barre (6), en aval de celui-ci un train dégrossisseur (4), en aval de celui-ci un dispositif de chauffage (7) de préférence inductif, et en aval de celui un train finisseur (5), le dispositif de guidage de barre (6) comportant une série d'éléments de guidage bas (9) et, disposée de façon parallèle ou convergente à celle-ci, une série d'éléments de guidage hauts (10), et entre les deux séries d'éléments de guidage (9, 10) étant prévu un puits de réception (11) destiné à recevoir une barre (3) sortant de la lingotière (2), lequel puits se rétrécit, au moins par tronçons, dans le sens de transport par la formation de distances différentes séparant les éléments de guidage (9, 10) les uns des autres, permettant ainsi de réduire l'épaisseur de la barre (3), caractérisé
    en ce que la largeur de réception intérieure (12) du puits de réception (11) au niveau de sa zone d'entrée orientée vers la lingotière (2) est comprise entre 95 et 110 mm, de préférence entre 102 et 108 mm,
    en ce que le puits de réception (11) présente à son extrémité (14) orientée vers le train dégrossisseur (4) une largeur de réception intérieure (12) correspondant à l'épaisseur (d) de la barre (3) comprise entre 60 et 95 mm, de préférence entre 70 et 85 mm, une longueur de soutien de la barre (L) mesurée entre le ménisque (13), c.-à-d. le niveau du bain dans la lingotière (2), et l'extrémité (14), orientée vers le train dégrossisseur (4), du puits de réception (11) du dispositif de guidage de barre (6) étant de 12 à 15,5 m, de préférence comprise entre 13 et 15 m, mieux encore entre 14,2 et 15 m, et
    un dispositif de commande étant prévu, au moyen duquel la vitesse de coulée (vc) de la barre (3) peut être maintenue dans une plage comprise entre 3, 8 - 7 m/min, et en ce que le train dégrossisseur (4) comprend quatre ou cinq cages dégrossisseuses (41, 42, 43, 44, 45).
  18. Installation selon la revendication 17, caractérisée en ce qu'entre l'extrémité (14) du puits de réception (11) ou du dispositif de guidage de barre (6) et une zone d'entrée du train dégrossisseur (4), aucun dispositif de refroidissement n'est prévu, mais une couverture thermique.
  19. Installation selon l'une des revendications 17 à 18, caractérisée en ce qu'au moyen de cages dégrossisseuses (41, 42, 43, 44, 45) agencées dans le train dégrossisseur (4), une réduction de l'épaisseur (d) de la barre (3) de 35-60%, de préférence de 40-55 % par cage dégrossisseuse (41, 42, 43, 44, 45) est réalisable, permettant ainsi de produire une bande intermédiaire (3') d'une épaisseur de 3 à 15 mm, de préférence d'une épaisseur de 4 à 10 mm.
  20. Installation selon l'une des revendications 17 à 19, caractérisée en ce que le dispositif de chauffage (7) est réalisé sous forme de four de réchauffage inductif par champ transversal, au moyen duquel la barre (3), en commençant à une température supérieure à 725°C, de préférence supérieure à 850°C, peut être portée à une température d'au moins 1100°C, de préférence à une température supérieure à 1180°C.
  21. Installation selon l'une des revendications 17 à 20, caractérisée en ce que le train finisseur (5) comprend quatre cages finisseuses (51, 52, 53, 54) ou cinq cages finisseuses (51, 52, 53, 54, 55), au moyen desquelles une bande intermédiaire (3') sortant du train dégrossisseur (4) peut être réduite en une bande finie (3") d'une épaisseur < 1,5 mm, de préférence < 1,2 mm.
  22. Installation selon la revendication 21, caractérisée en ce que les cages finisseuses (51, 52, 53, 54, 55) sont disposées à des distances < 7m, de préférence à des distances < 5m l'une de l'autre, étant mesurées les distances entre les axes des cylindres de travail des cages finisseuses (51, 52, 53, 54, 55).
  23. Installation selon l'une des revendications 17 à 22, caractérisée en ce que pour réduire l'épaisseur de la barre (3), certains éléments de guidage (9, 10) sont réglables, permettant ainsi de diminuer ou agrandir une largeur de réception intérieure (12) du puits de réception (11), l'épaisseur de barre (d) ou ladite largeur de réception intérieure (12) étant réglable en fonction du matériau de la barre (3) et/ou de la vitesse de coulée (vc).
  24. Installation selon la revendication 23, caractérisée en ce que les éléments de guidage réglables (9, 10) sont agencés dans une moitié avant tournée vers la lingotière (2), de préférence dans un quart avant tourné vers la lingotière (2) de l'extension longitudinale du dispositif de guidage de barre (6).
  25. Installation selon l'une des revendications 17 à 24, caractérisée en ce qu'un axe de cylindre de travail de la première cage dégrossisseuse (41) du train dégrossisseur (4) la plus proche du dispositif de guidage de barre (6) se trouve au maximum 7 m, de préférence au maximum 5 m après l'extrémité (14) du dispositif de guidage de barre (6).
  26. Installation selon l'une des revendications 17 à 25, caractérisée en ce qu'une extrémité d'entrée (7a) du dispositif de chauffage (7) tournée vers le train dégrossisseur (4) se trouve au maximum 25 m, de préférence au maximum 19 m après l'axe de cylindre de travail de la cage dégrossisseuse la plus proche du dispositif de chauffage (7).
EP11771071.5A 2010-10-12 2011-10-11 Procédé et installation de production à efficacité énergétique pour une bande d'acier laminée à chaud Not-in-force EP2627464B1 (fr)

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EP10187232A EP2441540A1 (fr) 2010-10-12 2010-10-12 Procédé et installation de production à efficience énergétique d'une bande chaude en acier
PCT/EP2011/067670 WO2012049135A1 (fr) 2010-10-12 2011-10-11 Procédé et installation de production à efficacité énergétique pour une bande d'acier laminée à chaud
EP11771071.5A EP2627464B1 (fr) 2010-10-12 2011-10-11 Procédé et installation de production à efficacité énergétique pour une bande d'acier laminée à chaud

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EP2627464B1 true EP2627464B1 (fr) 2016-03-23

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US (1) US9296027B2 (fr)
EP (2) EP2441540A1 (fr)
KR (1) KR101809108B1 (fr)
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EP2441540A1 (fr) 2010-10-12 2012-04-18 Siemens VAI Metals Technologies GmbH Procédé et installation de production à efficience énergétique d'une bande chaude en acier
EP2441539A1 (fr) 2010-10-12 2012-04-18 Siemens VAI Metals Technologies GmbH Procédé à sortie d'énergie optimisée et installation de production d'une bande chaude en acier
DE102013214939A1 (de) * 2013-07-30 2015-02-05 Sms Siemag Ag Gießwalzanlage zum Herstellen von Metallbändern
WO2015188278A1 (fr) 2014-06-13 2015-12-17 M3 Steel Tech Inc. Micro broyeur modulaire et procédé de fabrication d'un produit long en acier
JP6263094B2 (ja) * 2014-06-30 2018-01-17 新日鉄住金エンジニアリング株式会社 連続鋳片加熱装置の芯出し用ゲージ及び芯出し方法
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CN103228377A (zh) 2013-07-31
US9296027B2 (en) 2016-03-29
KR101809108B1 (ko) 2018-01-18
RU2013121553A (ru) 2014-11-20
CN103228377B (zh) 2015-06-03
US20130192790A1 (en) 2013-08-01
RU2579723C2 (ru) 2016-04-10
EP2627464A1 (fr) 2013-08-21
WO2012049135A1 (fr) 2012-04-19
EP2441540A1 (fr) 2012-04-18
KR20130109157A (ko) 2013-10-07

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