EP3434383A1 - Dispositif de refroidissement de cage permettant le refroidissement d'un feuillard en acier dans une cage de laminoir - Google Patents

Dispositif de refroidissement de cage permettant le refroidissement d'un feuillard en acier dans une cage de laminoir Download PDF

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Publication number
EP3434383A1
EP3434383A1 EP17182794.2A EP17182794A EP3434383A1 EP 3434383 A1 EP3434383 A1 EP 3434383A1 EP 17182794 A EP17182794 A EP 17182794A EP 3434383 A1 EP3434383 A1 EP 3434383A1
Authority
EP
European Patent Office
Prior art keywords
cooler
scaffold
cooling
rolling
steel strip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17182794.2A
Other languages
German (de)
English (en)
Inventor
Thomas Lengauer
Bernd Linzer
Alois Seilinger
Michael Zahedi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Primetals Technologies Austria GmbH
Original Assignee
Primetals Technologies Austria GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Primetals Technologies Austria GmbH filed Critical Primetals Technologies Austria GmbH
Priority to EP17182794.2A priority Critical patent/EP3434383A1/fr
Priority to PCT/EP2018/069668 priority patent/WO2019020492A1/fr
Priority to EP18743776.9A priority patent/EP3658305B1/fr
Priority to CN201880049721.8A priority patent/CN110891702B/zh
Priority to RU2020105861A priority patent/RU2766925C2/ru
Priority to US16/620,896 priority patent/US11331704B2/en
Publication of EP3434383A1 publication Critical patent/EP3434383A1/fr
Priority to US17/722,436 priority patent/US11712725B2/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
    • 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
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • 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
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B2001/225—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length by hot-rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
    • B21B2203/06—Cassettes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
    • B21B2203/28—Mounting or dismounting bearing and chock as a unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/20—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • 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
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0239—Lubricating
    • B21B45/0245—Lubricating devices
    • B21B45/0248—Lubricating devices using liquid lubricants, e.g. for sections, for tubes
    • B21B45/0251—Lubricating devices using liquid lubricants, e.g. for sections, for tubes for strips, sheets, or plates

Definitions

  • the present invention relates to rolling mill technology, in particular to hot rolling and cooling a metallic strip, e.g. a steel strip, or sheet in a rolling mill.
  • the rolling mill may, for example, be a finishing train for strip production or a hot rolling mill for sheet metal production.
  • the invention relates to a scaffold cooler for cooling a steel strip in a roll stand, which can be installed in the mill stand instead of chocks and an upper and a lower work roll.
  • the invention relates to a method for installing a scaffold cooler in a rolling stand, as well as a method for removing a scaffold cooler from a rolling stand.
  • a roll stand with removed chocks and removed work rolls is referred to as a roll stand in this document. This nomenclature is obvious to the person skilled in the art and increases the clarity.
  • the hot rolling stock is plastically deformed in a roll gap by so-called work rolls, whereby, for example, the thickness of the rolled stock is reduced.
  • the rolled stock is typically cooled in a cooling line and then discharged from the mill train, eg as a coil or sheet.
  • the material properties of a hot-rolled strip are not only dependent on its chemical composition, but also depend very much on the chronological sequence of the processing steps in the hot rolling mill.
  • a cast-rolling compound plant e.g. an Arvedi ESP system
  • finished strip the hot-rolled strip after finish rolling is referred to as finished strip
  • the time interval between the last roll pass in a rolling stand of the rolling train and the beginning of the cooling of the strip also plays a decisive role. In many cases, this time span should be as short as possible.
  • Hot rolling mills have a fixed number of rolling mills, so that due to the high technical complexity of these mills, it is not possible to remove one or more mills of the mill in the production of thick strip, and to add removed mills in the production of thin strip.
  • a rolling mill i.A. Both suitable for the production of thicker and thinner tapes.
  • the object of the invention is to modify the existing state of the art by means of an innovative solution for a hot rolling mill, in particular a cast-rolled composite plant and here in particular for an endlessly operated cast-rolled composite plant, such that the time span between the last Rolling during hot rolling and the beginning of the strip cooling can be reduced without one or more stands have to be removed from the hot rolling mill or rebuilt before the subsequent production of thin strips, distant rolling stands before the production of thick tapes.
  • the solution aims to expand the product mix of the hot rolling mill and produce a wide range of high quality hot strip.
  • the solution is carried out by a scaffold cooler, which is suitable for cooling a hot strip in a rolling stand, wherein the scaffold cooler can be installed instead of chocks and an upper and lower work roll through an operator-side roll stand of the rolling mill in the rolling mill.
  • the term "scaffold cooler” refers to a cooling device that cools a variable intensity hot strip and can be installed in a mill stand instead of chocks and work rolls. The designation explicitly does not refer to a cooling device that cools the rolls of a rolling stand!
  • Scaffolding coolers according to the invention may also have a combination of a plurality of cooling nozzles or cooling tubes and one or more cooling slots.
  • the scaffold cooler can be installed in the mill instead of chocks and upper and lower work rolls, so that the mill stand with the scaffold cooler can cool the top and bottom of a hot strip with a given intensity.
  • a cooling which is comparable to the cooling in one of the rolling mill downstream cooling section.
  • the scaffold cooler has at least two guide surfaces, wherein the guide surfaces are connected to the lower or upper water tank, so that the scaffold cooler in the width direction of the rolling mill or the hot strip introduced into the rolling mill (For example, inserted) can be and preferably the scaffold cooler rests in the built state on the guide surfaces.
  • the scaffold cooler can be easily mounted in the width direction of the rolling stand, e.g. also rails, are brought into the rolling stand. After retraction of the scaffold cooler it may remain on the rails or e.g. be supported by the bending block. Preferably, the scaffold cooler is in the installed state on the guide surfaces.
  • Replacing the chocks and upper and lower work rolls with the scaffold cooler can reduce the time span between the finish rolling (ie the last rolling pass in the hot rolling mill) and the beginning of the strip cooling are drastically shortened, so that, for example, thick hot strips reach the necessary metallurgical properties (eg structure) and can be produced with high quality.
  • the distance between the last rolling mill and the cooling section is already used for cooling.
  • the scaffold cooler is installed or removed mainly during a stoppage of the rolling operation (e.g., when changing work rolls), it is advantageous if the scaffold cooler is made in one piece, preferably with the lower and upper water boxes interconnected by posts. In this embodiment, the scaffold cooler can be installed and removed as a unit.
  • the scaffold cooler can also be installed or removed during the rolling operation, it is advantageous for the scaffold cooler to be designed in at least two parts, with the lower and upper water tank each having two guide surfaces.
  • the upper part of the scaffold cooler can be installed with the upper water tank independent of the lower part of the scaffold cooler with the lower water box in the roll stand, whereby the installation is facilitated during the continuous rolling operation.
  • a one-piece design would also be possible, e.g. with a "C" shape of the scaffold cooler.
  • the lower water tank can be introduced eg on exchange rails in the rolling mill and then remain on this or raised or lowered by these, whereas the upper water tank can be supported in operation on the bending blocks and raised or lowered by these can be.
  • the gap be set between the outlet openings of the water tanks and the steel strip.
  • the lower water tank and the upper water tank have at least two terminals.
  • the cooling nozzles associated with the edge regions are supplied with a lower pressure than the cooling nozzles assigned to the center region.
  • connections can be made, for example, by means of flange connections, manually operated lever-arm couplings with hose connections or by automatic coupling when the scaffolding cooler is inserted.
  • a connection is supplied by a coolant under an overpressure of 2 to 5 bar.
  • a connection is supplied by a coolant under an overpressure of 0.1 to 0.8 bar.
  • connection or the connections of the lower water box with a higher pressure than the connection or the connections of the upper water box.
  • This can be done by separate pressure controls for the upper and the lower connection.
  • this can also be done by flow controls so that the flow rate to the lower plenum is higher than to the upper plenum (e.g., 60% of the total amount of water is supplied to the lower plenum and 40% to the upper plenum).
  • the edge region of the hot strip can be cooled by a first connection with a coolant under a pressure of 0.1 to 0.8 bar, whereas the center region can be cooled by a second connection with a coolant under a pressure of 2 to 5 bar.
  • a steel strip is carried out according to claim 13, wherein first rolled a first steel strip in at least two rolling stands of a hot rolling mill is then cooled, the first steel strip in a cooling section and the cooled first steel strip is discharged as a plate or reel. Then, a scaffold cooler according to the invention is installed in a rolling stand of the rolling train. After installation of the scaffold cooler in the rolling stand, a second steel strip is rolled in at least one rolling stand of the rolling mill, cooled the second steel strip in at least one roll stand by means of the scaffold cooler, cooled the cooled second steel strip in the cooling section, and discharged the cooled second steel strip.
  • the disconnection of the terminals may in turn be e.g. by flange connections, manually operated lever arm couplings with hose connection or by the automatic coupling when pushing out the scaffold cooler.
  • the scaffolding cooler can be removed during operation or during an interruption in the operation of a rolling train.
  • the cooling performance of the scaffold cooler depending on the material (in particular the chemical composition), the rolling parameters (thickness and speed of the steel strip) as well as to be achieved Set steel quality model-controlled.
  • a cooling model delivers online, ie during operation of the hot rolling mill, one cooling water quantity each and possibly also a width-dependent cooling water distribution for the top and bottom of the hot strip.
  • the pressure and / or the flow rate of the cooling medium through the scaffold cooler are controlled or adjusted so that the steel strip reaches the desired properties as best as possible after passing through the rolling stands with the built-in scaffold coolers and cooling in the cooling section.
  • the Fig. 1 left shows a side view of a rolling stand 11 with built-in chocks 4a, 4b for an upper and lower support roller 4 and built-in chocks 5a, 5b for an upper and lower work roll 5.
  • the right representation of Fig. 1 shows the roll stand 11 in a schematic sectional view without chocks.
  • a hot strip, not shown, here a steel strip is rolled in the rolling stand 11 by the work rolls 5, wherein the work rolls 5 are supported on the underlying support rollers 4.
  • a bending block 6 can bend the work rolls 5 and thus adjust the profile or the flatness of the rolled hot strip.
  • AGC (short for Automatic Gap Control) cylinder 3 and the bending block 6 are installed in the two stator windows 2 of the roll stand 1.
  • the hot strip is guided on a rolling table 10 and brought to the work rolls 5.
  • at least one (here two) upper cooling head 8a and at least one (here two) lower cooling head 8b of the work roll cooling are provided before and after the work rolls 5.
  • an upper and a lower cooling head of the intermediate stand cooling can also be arranged before and after the roll stand 11, respectively.
  • a pivotable looper roller 9 can adjust the train in the hot strip.
  • rolling stands 11 are known with so-called scaffold installations, a further description of the state of the art is dispensed with.
  • Fig. 2 On the left is a side view and on the right a front view of a chock 5a with an upper work roll 5 and a chock 5b with a lower work roll 5 shown.
  • the chocks 5a, 5b the work rolls are mounted displaceably in the rolling stand.
  • the Fig. 3 shows the rolling stand 11 from Fig. 1 in a rolling mill.
  • An unillustrated steel strip is fed in the transport direction TR on a roller table 12 to the rolling stand 11 and rolled in the nip between the two work rolls. After hot rolling, the rolled strip is again guided on the subsequent roller table 12 to a cooling section 45 with a plurality of cooling manifolds 13 and cooled there with adjustable intensity.
  • the Fig. 4 shows a possible situation when rolling a thick hot strip in a rolling mill 40 designed as a finishing train with five rolling stands 11. Since it is a thick hot strip, the last roll pass already in the third (ie in the middle) rolling mill 11 instead. The thickness of the hot strip is reduced from 45 mm to 20 mm. After rolling, the rolled finished strip leaves the middle stand 11 at a speed of 0.4 m / s. In the areas marked C, the finished strip can be cooled by the upper and lower cooling heads of the inter-frame cooling 7a, 7b. In the rolling stands 11 itself, the finished strip can not be cooled. The uncooled areas are marked NC.
  • the rolled hot strip requires 50 s until it reaches the cooling section 45. This time is already too long for certain types of steel, so that the steel strip can no longer achieve the desired structure or phase properties.
  • the interstage cooling (marked C in the figure) with the upper and lower cooling heads 7a, 7b (see Fig. 1 ) does not change anything because the cooling capacity is too low and the rolled hot strip on the way to the cooling section 45 is mostly not cooled.
  • the Fig. 5 shows the situation when hot rolling a thick steel strip in a rolling mill 40 designed as a finish rolling mill originally with five rolling stands 11.
  • the chocks 5a, 5b and the work rolls 5 see Fig. 1
  • each a scaffold cooler 20 (details in the Fig. 6 to 11 ) installed per roll stand 1.
  • the last roll pass takes place in the second rolling stand 11 from the left; the finished strip is intensively cooled in each of the three subsequent roll stands 1 by a scaffold cooler 20.
  • the finished strip is already cooled on the middle roll stand 1. This makes it possible to produce thick strips of special steel grades (eg sophisticated tube grades) that would not be producible without scaffold cooler 20.
  • FIG. 6 two views of a scaffold cooler 20 are shown, namely left in a side view and right in a sectional view.
  • the scaffold cooler 20 has an upper header 21a and a lower header 21b.
  • the underside of the upper water box 21a and the upper side of the lower water box 21b are equipped with cooling nozzles 23, so that a hot strip, not shown here in the width direction B can be cooled.
  • seven cooling nozzles each are arranged one behind the other in the transport direction (see Fig. 6 right).
  • the water boxes 21a, 21b have lateral support tabs 25, wherein the support tabs 25 of the water box 21b each have a guide surface 26.
  • the illustrated scaffold cooler 20 is made in one piece, wherein the upper and the lower water tank 21 a, 21 b are connected to each other by uprights 27.
  • the cooling nozzles 23 are supplied with coolant by a total of four ports 22, with two ports 22 each supplying the upper and lower water tanks 21a, 21b.
  • Fig. 7 is in addition a front view of the scaffold cooler of Fig. 6 shown.
  • the cooling nozzles 23 are typically supplied with an overpressure of 2 to 5 bar.
  • the cooling intensity is pressure-dependent and adjustable via the overpressure of the cooling medium.
  • Fig. 8 is a roll stand 1 with a scaffold cooler 20 shown in a side view on the left and a sectional view on the right.
  • the scaffold cooler 20 from the FIGS. 6 and 7 is in the installed state on the two guide surfaces 26 of the lower support plates 25 on guide rails in the roll stand 1 or on the opposite guides of the chock 4b of the lower support roller and can be on this and removed.
  • FIGS. 9a and 9b show one to the FIGS. 6 and 7 alternative scaffold cooler 20, which has cooling slots 24 instead of cooling nozzles. Since the steel strip 50 is not cooled differently in its width direction B or in the depth direction T of the scaffold cooler 20, it suffices if the upper and lower water boxes 21 a, 21 b each have only one connection 22. The uprights 7 and the support straps are like in the FIGS. 6 and 7 executed.
  • FIG. 10 a water line plan for the coolant supply of a roll stand 11 with a built-in scaffold cooler 20 is shown.
  • a pump 30 fed from a tank 31 represents the coolant supply.
  • the pressure of the cooling medium water is reduced by the pressure regulating valve 28 from 13 bar to 4 bar and after passing the open switching valve 29 and the flow control valves 32 via connections to the upper and the lower water tank 21a, 21b supplied.
  • the top and bottom of a hot strip, not shown here, are cooled by cooling nozzles 23.
  • the switching valves 29 are closed for the supply of the cooling medium to the cooling heads for the work roll cooling.
  • Fig. 11 schematically the installation of a scaffold cooler 20 in the roll stand 1 of a roll stand 11 is shown.
  • the scaffold cooler 20 is horizontally in the width direction B of Rolling stand 11 inserted through the operator-side roll stand (shown here on the right).
  • the connections 22 of the scaffold cooler 20 are connected to a coolant supply, so that an upper and a lower side of a hot strip, not shown, are cooled by the cooling nozzles 23.
  • FIG. 12 shows a schematic section through a scaffold cooler 20 with cooling tubes 23a instead of cooling nozzles 23 (see Fig. 6 right).
  • Cooling tubes 23a are typically operated with an overpressure between 0.1 and 1 bar, so that they can easily realize a so-called laminar cooling.
  • Fig. 13 is the covering of the edge regions of a steel strip 50, engl. edge masking, shown.
  • at least one edge region of the steel strip 50 in the figure, there are four edge regions, by the insertion of a Abweiseblechs 33 or a groove between the cooling nozzles 23, cooling tubes 23 a (see Fig. 12 ) or the cooling slot 24 (see Fig. 9b ) of the scaffold cooler 20 and the surface of the steel strip 50, so that the edge portion is not cooled.
  • the cooling water of the cooling nozzles 23 and cooling tubes is discharged to the outside in the width direction of the steel strip 50.
  • the position of the Abweiseblechs 33 or the channel can be adjusted to manual or automatic (for example, by an actuator, not shown, which shifts the Abweiseblech 33 in the arrow direction) fine, so that overcooling of the edge regions is reliably prevented.
  • FIG. 14 is an alternative scaffold cooler 20 to the scaffold cooler of Fig. 7 shown in C-shape. Since the C-shaped scaffold cooler 20 is open at one end in the widthwise direction B, the scaffold cooler 20 may be opened during the The rolling mill can be easily inserted and removed in a rolling stand.
  • the connections 22 of the upper and lower water box 21a, 21b, the cooling nozzles 23 and the guide surfaces 26 are identical to Fig. 7 , As an alternative to the guide surfaces, the scaffold cooler 20 could also have wheels for guiding on a rail.
  • the uprights 27 are arranged only at one end of the scaffold cooler, for example, the user-side end.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
EP17182794.2A 2017-07-24 2017-07-24 Dispositif de refroidissement de cage permettant le refroidissement d'un feuillard en acier dans une cage de laminoir Withdrawn EP3434383A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP17182794.2A EP3434383A1 (fr) 2017-07-24 2017-07-24 Dispositif de refroidissement de cage permettant le refroidissement d'un feuillard en acier dans une cage de laminoir
PCT/EP2018/069668 WO2019020492A1 (fr) 2017-07-24 2018-07-19 Cage de laminage présentant un refroidisseur de cage pour le refroidissement d'un feuillard en acier
EP18743776.9A EP3658305B1 (fr) 2017-07-24 2018-07-19 Dispositif de refroidissement de cage permettant le refroidissement d'un feuillard en acier dans une cage de laminoir
CN201880049721.8A CN110891702B (zh) 2017-07-24 2018-07-19 具有用于冷却钢带的框架式冷却器的辊框架
RU2020105861A RU2766925C2 (ru) 2017-07-24 2018-07-19 Прокатная клеть, имеющая устройство охлаждения клети для охлаждения стальной полосы
US16/620,896 US11331704B2 (en) 2017-07-24 2018-07-19 Roller framework having a framework cooler for cooling a steel band
US17/722,436 US11712725B2 (en) 2017-07-24 2022-04-18 Roller framework having a framework cooler for cooling a steel band

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17182794.2A EP3434383A1 (fr) 2017-07-24 2017-07-24 Dispositif de refroidissement de cage permettant le refroidissement d'un feuillard en acier dans une cage de laminoir

Publications (1)

Publication Number Publication Date
EP3434383A1 true EP3434383A1 (fr) 2019-01-30

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP17182794.2A Withdrawn EP3434383A1 (fr) 2017-07-24 2017-07-24 Dispositif de refroidissement de cage permettant le refroidissement d'un feuillard en acier dans une cage de laminoir
EP18743776.9A Active EP3658305B1 (fr) 2017-07-24 2018-07-19 Dispositif de refroidissement de cage permettant le refroidissement d'un feuillard en acier dans une cage de laminoir

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP18743776.9A Active EP3658305B1 (fr) 2017-07-24 2018-07-19 Dispositif de refroidissement de cage permettant le refroidissement d'un feuillard en acier dans une cage de laminoir

Country Status (5)

Country Link
US (2) US11331704B2 (fr)
EP (2) EP3434383A1 (fr)
CN (1) CN110891702B (fr)
RU (1) RU2766925C2 (fr)
WO (1) WO2019020492A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
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WO2020187774A1 (fr) 2019-03-18 2020-09-24 Sms Group Gmbh Installation et procédé pour fabriquer un feuillard à chaud métallique
EP4101552A1 (fr) * 2021-06-09 2022-12-14 Primetals Technologies Austria GmbH Procédé de fabrication d'acier micro-allié, acier micro-allié fabriqué selon le procédé et installation combinée de coulée et de laminage
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WO2023011790A1 (fr) * 2021-08-04 2023-02-09 Sms Group Gmbh Procédé de production d'une bande d'aluminium et système de coulée-laminage pour la production d'une bande d'aluminium

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EP3658305A1 (fr) 2020-06-03
CN110891702B (zh) 2021-10-15
US20220241833A1 (en) 2022-08-04
EP3658305B1 (fr) 2022-06-29
WO2019020492A1 (fr) 2019-01-31
US11712725B2 (en) 2023-08-01
RU2020105861A3 (fr) 2021-11-09
RU2020105861A (ru) 2021-08-25
US20200156130A1 (en) 2020-05-21
CN110891702A (zh) 2020-03-17
US11331704B2 (en) 2022-05-17

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