EP3554727A2 - Système de refroidissement servant au refroidissement de produits à laminer - Google Patents

Système de refroidissement servant au refroidissement de produits à laminer

Info

Publication number
EP3554727A2
EP3554727A2 EP17804569.6A EP17804569A EP3554727A2 EP 3554727 A2 EP3554727 A2 EP 3554727A2 EP 17804569 A EP17804569 A EP 17804569A EP 3554727 A2 EP3554727 A2 EP 3554727A2
Authority
EP
European Patent Office
Prior art keywords
coolant
cooling
bypass line
line
supply
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.)
Granted
Application number
EP17804569.6A
Other languages
German (de)
English (en)
Other versions
EP3554727B1 (fr
EP3554727B2 (fr
Inventor
Christian Lehner
Erich Opitz
Lukas PICHLER
Florian POESCHL
Alois Seilinger
Klaus Weinzierl
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
Primetals Technologies Germany GmbH
Original Assignee
Primetals Technologies Austria GmbH
Primetals Technologies Germany 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
Family has litigation
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Application filed by Primetals Technologies Austria GmbH, Primetals Technologies Germany GmbH filed Critical Primetals Technologies Austria GmbH
Publication of EP3554727A2 publication Critical patent/EP3554727A2/fr
Publication of EP3554727B1 publication Critical patent/EP3554727B1/fr
Application granted granted Critical
Publication of EP3554727B2 publication Critical patent/EP3554727B2/fr
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Links

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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/667—Quenching devices for spray quenching

Definitions

  • Cooling system for cooling rolling The invention relates to a cooling system for cooling of rolled ⁇ well, comprising a plurality of cooling bars for applying a coolant to the rolling, exactly ownméffenersslei ⁇ processing for each of the cooling bars, and a supply system for directing the coolant to the coolant supply lines, wherein each of the chilled beams is connected to the supply system via its own coolant supply line.
  • Such a cooling system is used to achieve a defined cooling of rolling stock.
  • the rolling stock is fed to the cooling system.
  • a coolant usually water
  • the so-called hot rolling is defined cooling of the rolling stock of central importance in order to achieve desired material properties of the rolling stock, such as a ge ⁇ wished microstructure.
  • the coolant supply to the cooling bars is usually interrupted.
  • one or more shut-off devices of the cooling system are typically used.
  • JP S54 79817 A JP S62 67605 U and JP S52 56052 A various cooling systems for cooling rolling stock are known, the plurality of cooling bars or coolant nozzles for applying coolant to the rolling stock, coolant supply lines and supply systems for conducting coolant to the coolant supply lines comprises.
  • An object of the invention is to provide an improvedméanla ⁇ ge for cooling of rolling stock.
  • the cooling system comprises a plurality of cooling bars for applying a coolant to the rolling stock.
  • the cooling system also has its own coolant supply line for each of the chilled beams. That is, the cooling system has a plurality of coolant supply lines, wherein for each of the cooling bars exactly one separate coolant supply line is provided. Furthermore, the cooling system comprises a supply system for conducting the coolant to the coolant supply lines.
  • each of the cooling bars is connected via its own coolant supply line to the supply system.
  • each of the cooling bars is connected via the exactly one coolant supply line, which is assigned to the respective cooling beam or is provided for it, connected to the supply line system.
  • the cooling system has a bypass line for discharging a coolant flow from the supply system, which is connected on the input side to a connection element, in particular a connecting piece, of the supply system.
  • the cooling system has a coolant reservoir, to which the supply system is connected, a tinder channel, a tinder tank connected to the tundish and another bypass line, which is connected on the input side to another connection element of the supply system, wherein one of the two bypass lines is on the output side the coolant reservoir or to another connection element of the supply system is connected and the other Re the two bypass lines on the output side opens into the tinder channel or in the scale settling tank.
  • the invention is based on the consideration that at a rapid interruption of the coolant supply pressure surges in the cooling system, in particular in their lines, may arise, which may damage components of the cooling system and may possibly lead to failure of the cooling system.
  • the occurrence of pressure surges, which could harm the cooling system is particularly problematic when the cooling system is operated in the so-called intensive cooling mode because typically higher coolant pressure in the pipes of the cooling system of master ⁇ rule in this mode, as in an operation of the cooling system in the so-called La ⁇ minarkühlmodus.
  • the invention allows for an interruption of the coolant supply to the chilled beam, a drainage of the coolant from the supply system via the bypass line.
  • the coolant is thus provided by the bypass line an alternative flow path.
  • components of the cooling system can be spared and their respective life can be increased. Expediently is released upon a break in the coolant supply ⁇ went to the cooling bar, the bypass line.
  • bypass line is connected to a connection element of the supply system, via the bypass line several chilled beams at a time, ie severaldebal ⁇ ken with the same bypass line bridged. Its own bypass line for each of the coolant supply lines - and optionally a separate shut-off device for each such bypass line - is therefore not required. This allows a structurally simple and cost-effective Aus ⁇ management of the cooling system. In addition, a control ⁇ technically simple operation of the cooling system is made possible.
  • a pipe, a pipe section or a system of pipes connected to one another can be understood as a line.
  • connection can be understood as a short form of the term "fluidly linked”.
  • One element of the cooling system can then be considered as connected to another element of the cooling system, when a fluid, in particular the above-mentioned coolant to flow to the other of the two elements from one of the two Ele ⁇ elements.
  • an application speed of the coolant can be understood on a surface of the roll ⁇ guts.
  • the coolant can be applied to the rolling stock from one or more sides. Preference ⁇ example, the coolant is applied to the rolling stock from above and from below.
  • the bypass line is preferably connected directly to the AnSchlusselement of the supply system. That is, the bypass line may be directly connected to the supply system.
  • the respectivedeffenersslei ⁇ device (the output side) is directly connected with its associated cooling beams.
  • a coolant supply line may be a line which supplies exactly one of the cooling bars with the coolant. Further, it is be ⁇ vorzugt when the respective chilled beam system is connected exclusively via its own coolant supply line to the Zu effets-.
  • the respective coolant supply line (input side) is connected directly to the supply system. About the supply system, preferably all of the aforementioned cooling bars are supplied with the coolant.
  • the Zulei ⁇ tion system may include one or more lines.
  • the supply system comprises at least one main ⁇ line and at least one distribution line. Conveniently, the main line is the output side indirectly or directly connected to the distribution line.
  • coolant supply lines are connected on the input side indirectly or directly to the distributor line.
  • the JE stays awhile coolant supply line is advantageously un ⁇ indirectly connected to its associated cooling beams.
  • the cooling system comprises a coolant pump for increasing a coolant pressure in the supply system. It is expedient if the coolant pump is arranged in the aforementioned ⁇ th main line.
  • the wording that the coolant pump is expediently be ⁇ arranged in the main line, is not necessarily the effect to verste ⁇ hen that the coolant pump is enclosed in such an arrangement of the main line.
  • the main line may have a first line section which is connected to an input of the coolant pump.
  • the main line may have a second line section which is connected to an outlet of the coolant pump.
  • the coolant pump can be used to control the cooling ⁇ performance of the cooling system.
  • other elements of the cooling system such as one or more control valves, may be used in the control of the cooling capacity.
  • the bypass line makes it possible by the Be ⁇ riding provide an alternate flow path upon interruption of the coolant supply to the cooling bar, the coolant To keep moving tel in the cooling system, it is not he ⁇ required to switch off the coolant pump in the interruption of the coolant supply. Rather, even if the coolant supply to the cooling beam is interrupted, a predetermined minimum volume flow of coolant, which is conveyed through the coolant pump, can be ensured.
  • the coolant pump is equipped with a fre ⁇ quenzregulated drive.
  • a pump With such a pump, the pumped through the pump coolant flow can be precisely adjusted.
  • a pump Under a coolant pump with frequency-controlled drive, a pump can be understood in which their speed is used as a control variable.
  • the cooling system can have a plurality of coolant pumps, in particular a plurality of coolant pumps of the previously described type.
  • a preferred embodiment of the invention provides that the cooling system has a high tank for storing the coolant.
  • the supply system in particular its main line, the input side connected directly to the coolant reservoir or to a connection element of the coolant reservoir.
  • the coolant can be derived from the coolant reservoir.
  • connection element of the supply system may be an element of the main line or the distribution line. That is, the bypass line may be connected on the input side, in particular to the main line or the distribution line of the supply system.
  • the bypass line on the input side is advantageously downstream of the before mentioned ⁇ to the coolant pump to the main line is Schlos ⁇ sen.
  • the bypass line is connected on the output side to the coolant reservoir, in particular directly connected to the coolant reservoir.
  • bypass line is connected on the output side to a further connection element of the supply system, in particular is connected directly to the further connection element.
  • the cooling system is equipped with an additional connecting element, which is disposed upstream ⁇ before mentioned coolant pump.
  • a preferred embodiment of the invention provides that the bypass line is the output side ⁇ joined to the additional connecting element is in particular directly connected.
  • This additional connection element may be, for example, the further connection element of the supply system mentioned above or a connection element of the coolant reservoir.
  • a fluid introduced into the tundish in particular the coolant, can flow out of the tinder trough into the tinder settling basin.
  • the bypass line opens into the tinder channel on the output side or into the detonator settling basin.
  • the must Bypass line may not necessarily be connected to the tundish or tinder tank.
  • the formulation that "the bypass line on the output side in the tundish or in the Zunderabsetzbecken opens" be understood to the effect that the output of the bypass line is arranged such that the coolant flow from the Bypasslei ⁇ tion can flow into the tinder channel or in the scale settling tank.
  • the outlet of the bypass line can be arranged above the tundish or the tinder-settling basin.
  • the coolant contained therein optionally after it has passed through a treatment plant, in said coolant reservoir and / or in the supply system (back) are performed.
  • the further bypass line is connected directly to the other connection element on the input side. It is expedient if the cooling system has a shut-off device, in particular ⁇ a valve, which is arranged in the bypass line. Further, it is advantageous if the cooling system comprises at least a further shut-off device, in particular a Ven ⁇ til, for interrupting a cooling medium supply to at least one of the cooling beams.
  • the shut-off device arranged in the bypass line and the further shut-off device advantageously have at least substantially the same switching times. In this way, the opening of the bypass line can be performed synchronously with the interruption of the coolant supply to the chilled beams. Conversely, closing the bypass line thereby can be performed in synchronism with the (re) release of the coolant supply to the chilled beams.
  • the switching time of a shut-off device can be understood as meaning the time required by the shut-off device (after issuing a blocking or unlocking command) to produce a line cross-section of that line in which the obturator is arranged to close completely from a fully open state forth ⁇ or to completely open the line cross-section from a fully closed state out.
  • the further shut-off device is arranged in the supply system, in particular in the aforementioned main line of the supply system, or in one of the coolant supply lines.
  • the cooling system can have multiple shut-off alswei ⁇ sen, each adapted for interrupting a cooling medium supply to at least one of the cooling beams.
  • a common shut-off device can be provided for several of the cooling bars.
  • a separate shut-off device may be provided for each of the chilled beams.
  • a shut-off device can be arranged in each of the coolant supply lines.
  • an additional obturator in particular a valve, is arranged in the further bypass line.
  • the blocking member arranged in the other bypass line from additional ⁇ may be formed identical to the first-mentioned is arranged in the bypass line shut-off device.
  • the additional shut-off device may have the same switching time as the shut-off element arranged in the first-mentioned bypass line.
  • the shut-off devices are using a STEU ⁇ ervorraum control or actuated.
  • the respective obturator can be actuated in particular electrically, pneumatically and / or hydraulically.
  • the respective shut-off device can not only be completely opened and completely closed, but can also assume intermediate positions, in particular continuous intermediate positions, between these two states.
  • the shut-off devices can be continuously adjustable.
  • At least one of the bypass lines may comprise several Kausab ⁇ sections, which are connected in parallel.
  • the parallel line sections ge ⁇ switched open the input side in a common ⁇ seed lead portion of the respective bypass line.
  • the parallel maral ⁇ ended line sections open on the output side in a common line section of the respective bypass line.
  • a shut-off device in particular a valve, can be arranged in each case.
  • One advantage of such an embodiment is that the shut-off devices - compared to the case where the respective bypass line has a single obturator - can be made relatively small and with short switching times.
  • the invention relates to a method for operating a cooling system.
  • the cooling system according to the invention in particular ⁇ sondere to one of its advantageous developments described above.
  • the subject elements mentioned in connection with the method may be the elements already mentioned above.
  • the input side is connected to a Ranele ⁇ ment of the feed system.
  • the former coolant flow is guided via the first-mentioned bypass line into the coolant reservoir of the cooling system or returned to the supply system, insbesonde ⁇ re led directly into the coolant reservoir or returned directly into the supply system.
  • the further flow of coolant is advantageously achieved via the Tere bypass line out in the tinder channel or in the Zunderab ⁇ setting basin of the cooling system, in particular led directly into the tinder channel or directly into the Zunderabsetzbecken the cooling system.
  • the coolant flow is discharged in the absence of the rolling stock to be cooled in the refrigerator over the ⁇ By fitting line from the supply system.
  • the coolant flow which is discharged from the supply system via the bypass line may be a partial flow of a total coolant flow flowing through the supply system or just said total coolant flow.
  • the coolant flow is discharged via the bypass line from the supply system such that the coolant flow bypasses the coolant supply lines.
  • thedemit ⁇ telstrom over the bypass line is guided so that the coolant flow, instead of flowing into the supply lines, flows elsewhere, for example, in another Ele ⁇ ment the cooling system or out of the cooling system out.
  • the coolant flow can be conducted from the bypass line, for example into a coolant inlet of the cooling system, which is positioned upstream of a coolant pump arranged in the supply system.
  • the coolant flow from the bypass line directly into the Returned supply system is thereby re-established upstream of a system arranged in Zu effetssys ⁇ coolant pump in the delivery system.
  • the coolant flow can in particular from the bypass line in front of an input of the
  • Coolant pump are returned to the supply system.
  • An advantageous variant of the invention provides that the white ⁇ tere coolant flow is guided from the other bypass line immediate cash to scale gutter or into the Zunderabsetzbecken.
  • the left channel in the scaledemit ⁇ tel is preferably passed from the scale in the gutter Zunderabsetzbe ⁇ CKEN.
  • the coolant contained therein can be returned to the coolant reservoir and / or into the supply line system from the scale-down tank.
  • the coolant contained in the scale settling tank Before the coolant contained in the scale settling tank is led (returned) into the coolant reservoir and / or into the supply system, it may optionally be treated in a treatment plant, in particular cleaned of foreign bodies.
  • the coolant stream is preferably removed downstream of the coolant pump, in particular between the coolant pump and the coolant supply lines, via the bypass line from the supply line system.
  • a cooling system with a bypass line in which the bypass line is connected on the input side to a distribution line and the output side opens into a scale settling tank;
  • another cooling system with a bypass line in which the bypass line is connected on the input side to a distribution line and the output side is connected to a coolant reservoir;
  • FIG. 4 shows another cooling system with a bypass line, in which the bypass line is connected to a main line both on the input side and on the output side;
  • FIG. 5 shows yet another cooling system with a first and a second bypass line, wherein the first bypass line is connected on the input side to a main line and the output side is connected to a coolant reservoir and the second bypass line is connected on the input side to a distribution line and the output side ends in a scale settling tank.
  • FIG. 1 shows a circuit diagram of a cooling system 2 for cooling a (not shown figuratively) hot-rolled rolling stock.
  • the cooling system 2 comprises a coolant reservoir 4 designed as a high tank for storing a coolant 6.
  • the coolant 6 is water.
  • the cooling system 2 comprises a plurality of cooling bars 8 for applying the coolant 6 to the rolling stock.
  • the cooling system 2 has a supply system 9.
  • the supply system 9 comprises a first main line 10 and a first distribution line 12.
  • the first main line 10 is connected directly to the coolant reservoir 4 on the input side.
  • the first main line 10 is connected directly to the first distribution line 12.
  • the supply system 9 comprises a second
  • Main line 14 and a second distribution line 16 The second main line 14 is the input side connected directly to the coolant reservoir 4. On the output side is the second main line 14 is connected directly to the second distribution line 16. Furthermore, the first and the second main line 10, 14 are connected to each other via a connecting line 18.
  • the cooling system 2 comprises a coolant pump 20, wel ⁇ che is arranged in the second main line 14 and has a frequency-controlled drive.
  • the coolant pump 20 is disposed between a first service door 22 and a second maintenance opening 24, which are arranged in the second processing Hauptlei ⁇ fourteenth Said maintenance flaps 22, 24 ⁇ nen to isolate the coolant pump 20 for maintenance and / or Repa ⁇ ratur purposeen and thereby wait, repair or replace can, without having to omit the coolant 6.
  • a valve designed as a shut-off device 26 is arranged for opening and closing the connecting line 18.
  • a valve obturator 28 is arranged for opening and closing the second main line 14.
  • the cooling bars 8 of the cooling system 2 are arranged along a cooling section 30, through which the rolling stock is led to its cooling ⁇ ment, the cooling section 30 is divided in the present embodiment into a first cooling section 32 and a second cooling section 34.
  • first and second in connection with the term “cooling section” serve only to distinguish the two cooling sections 32, 34 of the cooling section 30.
  • the two cooling sections 32, 34 may be arranged so that the rolling stock to be cooled ( at least during its first pass through the cooling section 30) first through the first cooling section 32 and then through the first section second cooling section 34 is guided.
  • the two cooling sections 32, 34 may be arranged so that the rolling stock (at least in its first passage through the cooling section 30), for example, first through the second cooling section 34 and then through the first
  • Cooling section 32 is guided. Basically al ⁇ so the cooling system 2 may be formed such that the second cooling section 34 is arranged in the running direction of the rolling stock in front of or behind the first cooling section 32.
  • a pluralitydeffenver ⁇ supply lines 36 of YOUR OWN wherein a ne coolant supply line 36 is provided for supplying the cooling bars 8 with the coolant, for each of the cooling bars 8 accurately.
  • Each of the chilled beams 8 of the first cooling path section 32 is connected via its own coolant supply line 36 to the first distribution line 12 of the supply system 9.
  • each of the chilled beams 8 of the second cooling path section 32 is connected via its own coolant supply line 36 to the first distribution line 12 of the supply system 9.
  • Cooling section 34 is connected via its ownméffenversor ⁇ supply line 36 with the second distribution line 16 of the supply system 9.
  • the cooling bars 8 of the first cooling path section 32 is thus supplied via the first distributor conduit 12 with the coolant 6, whereas the cooling bars 8 of the second cooling path section 34 supplied by the second manifold 16 to the coolant 6 ⁇ the.
  • one half of the cooling bars 8 is adapted to apply the coolant 6 from above to the rolling stock to be cooled, while the other half of the cooling bars 8 is adapted to the coolant 6 from below onto the rolling stock to be cooled to raise.
  • all the cooling bars 8 of the second cooling section 34 cooling bars are the same Design type. These cooling bars 8 have nozzles from which the coolant 6 exits during cooling operation of the cooling system 2. Dage ⁇ conditions, the cooling bars 8 of the first cooling section 32 differ from each other in terms of their design. Thus, for example, have some of the cooling bars 8 of the first cooling path section 32 gooseneck similarly shapeddemit ⁇ telauslas srohre on. In principle, all cooling bars 8 of the same design could also be in the first cooling ⁇ stretch section 32.
  • a service door 38 is disposed in each of the coolant supply lines 36.
  • a shut-off device 40 is arranged in each of the coolant supply lines 36, which is designed as a continuously adjustable valve and serves to regulate a coolant flow through the respective coolant supply line 36.
  • the cooling system 2 comprises a below the cooling ⁇ stretch 30 arranged tundra 42 for collecting the exiting the cooling bar 8 coolant 6 and for collecting scale particles. Furthermore, the cooling system 2 comprises a scale settling basin 44 for scale particle deposition.
  • the Zunderabsetzbecken 44 is connected via a discharge line 46 with the tundish 42, via which introduced into the tundish 42 coolant 6 with the therein
  • cooling system 2 has a bypass line 48 and a shut-off device 50 arranged therein, which is designed as a continuously adjustable valve.
  • the bypass line 48 is connected on the input side directly to a connection element 51 of the distribution line 16. On the output side, the bypass line 48 opens into the scaling basin 44. Furthermore, the obturator 50 arranged in the bypass line 48 and the shut-off elements 40 arranged in the coolant supply lines 36 have at least substantially the same switching times.
  • the second cooling section 34 of the cooling system 2 can optionally be operated in a laminar cooling mode, in a quasi-silica cool mode or in an intensive cooling mode.
  • the coolant 6 is conducted from the coolant ⁇ memory 4 via the first main line 10 to the coolant supply lines 36 of the first cooling section 32 and to the coolant supply lines 36 of the second cooling section 34.
  • the arranged in the connection line 18 ⁇ obturator 26 is thereby opened, while the second is arranged in the main line 14 shut-off device is closed 28th
  • the coolant pump 20 is turned off in this cooling mode.
  • the coolant 6 is led from the coolant reservoir 4 via the first main line 10 to the coolant supply lines 36 of the first cooling section 32 and via the second main line 14 to the coolant supply lines 36 of the second cooling section 34.
  • the arranged in the Verbin ⁇ dung line 18 shut-off member 26 is closed ⁇ ge, whereas arranged in the second main line 14 shut-off device is open 28th
  • the coolant pump 20 is operated with ei ⁇ ner speed at which a flowing through the coolant pump 20 resulting pressure drop in the coolant. 6 is at least substantially compensated.
  • the cooling ⁇ pressure is increased in the second main pipe 14 via the resulting through the coolant pressure memory 4 in addition intensive cooling mode using the refrigerant pump 20th
  • the coolant is applied to the rolling stock by both cooling bars 8 of the first cooling stretch section 32 and cooling bars 8 of the second cooling stretch section 34.
  • the cooling bars 8 of the first cooling path section 32 are always on the first
  • the coolant pump 20 is in this case not turned off, son ⁇ countries kept running to avoid later new approach to the coolant pump 20th Optionally, its speed is reduced to reduce the coolant flow through the second main conduit 14.
  • a coolant flow is discharged from the second main line 14, so that the coolant flow bypasses the coolant supply lines 36 of the second cooling section 34. That is, the coolant flow flows into the bypass line 48, instead of flowing into said distri ⁇ ler lines 36.
  • the coolant flow from the bypass line 48 is not discharged directly from the second main line 14, but via the second main line 14 connected to the second distribution line 16. From the bypass line 48, the coolant flow is performed directly in the Zunderabsetzbecken 44.
  • the coolant 6 therein can be conveyed into the coolant reservoir 4 for reuse either directly or via a coolant preparation system (not shown in the figure).
  • FIG 2 shows another cooling system 2 for the cooling of warmge ⁇ rolled rolling stock.
  • bypass line 48 is connected directly to the coolant reservoir 4 on the output side. Consequently, in the present embodiment, the discharged from the second main line 14 via the bypass line 48 coolant flow from the bypass line 48 directly into the coolant reservoir 4 (instead of the Zunderabsetzbecken 44) out. Any treatment of the introduced via the bypass line 48 into the coolant reservoir 4 coolant can be omitted here.
  • FIG 3 shows a further cooling system 2 for the cooling of warmge ⁇ rolled rolling stock.
  • the bypass line 48 on the input side directly connected to a connecting element 53 of the two ⁇ th main line fourteenth Accordingly, in the present case, the coolant flow is discharged via the bypass line 48 directly from the second main line 14.
  • bypass line 48 is connected on the output side directly to the coolant reservoir 4. Consequently, in the present exemplary embodiment, the coolant flow discharged from the second main line 14 via the bypass line 48 is led out of the bypass line 48 directly into the coolant reservoir 4 (instead of into the scaling basin 44). Any treatment of the introduced via the bypass line 48 into the coolant reservoir 4 coolant can be omitted here.
  • FIG 4 shows yet another cooling system 2 for cooling hot-rolled rolling stock.
  • the bypass line 48 is connected on the input side directly to a connection element 53 of the second main line 14. Accordingly, in the present case, the coolant flow is discharged via the bypass line 48 directly from the second main line 14. Furthermore, the bypass line 48 is on the output side to a mare ⁇ res connection element 55 of the second main line 14 anschlös ⁇ sen, the first-mentioned connection element 53 of the second main line 14 downstream of the coolant pump 20 angeord ⁇ net and the other connection element 55 of the second main line 14 upstream of the coolant pump 20 angeord ⁇ net is.
  • the coolant flow discharged from the second main line 14 via the bypass line 48 from the bypass line 48 is again returned directly to the second main line 14 (instead of being guided into the scale settling tank 44).
  • the obturator 50 of the bypass line 48 is opened and the shut-off valves 40 of the coolant supply lines 36 of the second cooling section 34 are closed, thedemit ⁇ telstrom circulates in the bypass line 48 and in the second main line 14 via the coolant pump 20th
  • the cooling system 2 comprises an additional bypass line 52 with a shut-off device 54, which is designed as a continuously adjustable valve.
  • this bypass line 52 is connected directly to a connecting element 53 of the second main line 14.
  • this bypass line 52 is connected directly to the coolant reservoir 4.
  • the obturator 50 of the first bypass line 50 is first opened. Thereafter, the obturator 54 of the additional bypass line 52 is slowly opened and in turn the obturator 50 of the first bypass line 48 closed again so that no further coolant is introduced into the Zunderabsetzbecken 44, as a return of the introduced into the Zunderabsetzbecken 44 coolant in the coolant reservoir 4 with a higher energy input than a direct supply returning the coolant from the second main line 14 into the coolant reservoir 4.
  • bypass line 48 may be provided as in FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Metal Rolling (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

L'invention concerne un système de refroidissement (2) servant au refroidissement de produits à laminer, comprenant plusieurs poutres de refroidissement (8) servant à appliquer un fluide de refroidissement sur le produit à laminer, exactement une conduite d'alimentation en fluide de refroidissement (36) propre à chaque poutre de refroidissement (8) ainsi qu'un système d'amenée (9) acheminant le fluide de refroidissement vers les conduites d'alimentation en fluide de refroidissement (36), chacune des poutres de refroidissement (8) étant raccordée au système d'amenée (9) par l'intermédiaire de sa propre conduite d'alimentation en fluide de refroidissement (36). Le système de refroidissement (2) présente par ailleurs une conduite de dérivation (48, 52) servant à l'évacuation d'un flux de fluide de refroidissement hors du système d'amenée (9) et raccordée côté entrée à un élément de raccordement (51, 53) du système d'amenée (9).
EP17804569.6A 2016-12-14 2017-11-28 Système de refroidissement servant au refroidissement de produits à laminer Active EP3554727B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16204004.2A EP3335812A1 (fr) 2016-12-14 2016-12-14 Installation de refroidissement de laminés
PCT/EP2017/080669 WO2018108518A2 (fr) 2016-12-14 2017-11-28 Système de refroidissement servant au refroidissement de produits à laminer

Publications (3)

Publication Number Publication Date
EP3554727A2 true EP3554727A2 (fr) 2019-10-23
EP3554727B1 EP3554727B1 (fr) 2020-12-30
EP3554727B2 EP3554727B2 (fr) 2024-01-31

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP16204004.2A Withdrawn EP3335812A1 (fr) 2016-12-14 2016-12-14 Installation de refroidissement de laminés
EP17804569.6A Active EP3554727B2 (fr) 2016-12-14 2017-11-28 Système de refroidissement servant au refroidissement de produits à laminer

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP16204004.2A Withdrawn EP3335812A1 (fr) 2016-12-14 2016-12-14 Installation de refroidissement de laminés

Country Status (7)

Country Link
US (1) US11103906B2 (fr)
EP (2) EP3335812A1 (fr)
JP (1) JP7210450B2 (fr)
CN (1) CN110049830A (fr)
MX (1) MX2019005854A (fr)
RU (1) RU2755133C2 (fr)
WO (1) WO2018108518A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3335812A1 (fr) * 2016-12-14 2018-06-20 Primetals Technologies Austria GmbH Installation de refroidissement de laminés
DE102022210057A1 (de) * 2022-09-23 2024-03-28 Sms Group Gmbh Verfahren und Computerprogramm zum Betreiben einer Produktionsanlage für ein Metallprodukt
DE102022128358A1 (de) 2022-10-26 2024-05-02 Sms Group Gmbh Kühlmodul, Kühlgruppe, Kühlsystem, Verfahren, warmgewalztes metallisches bandförmiges Produkt und Verwendung

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5256052A (en) * 1975-11-04 1977-05-09 Hitachi Ltd Roll coolant device
JPS5479817A (en) * 1977-12-07 1979-06-26 Mitsubishi Heavy Ind Ltd Water supplying device used pure fluidic control element without movable part
SU1224031A1 (ru) 1983-12-30 1986-04-15 Всесоюзный Научно-Исследовательский И Проектный Институт По Очистке Технологических Газов,Сточных Вод И Использованию Вторичных Энергоресурсов Предприятий Черной Металлургии "Вниипичерметэнергоочистка" Устройство дл вод ного охлаждени проката и оборудовани стана
JPS6267605A (ja) * 1985-09-20 1987-03-27 Hitachi Ltd シ−ケンシヤル制御装置
JPS6267605U (fr) * 1985-10-14 1987-04-27
SU1703213A1 (ru) 1989-12-11 1992-01-07 Научно-Производственное Объединение По Защите Атмосферы, Водоемов, Использованию Вторичных Энергоресурсов И Охлаждению Металлургических Агрегатов На Предприятиях Черной Металлургии "Энергосталь" Устройство дл вод ного охлаждени проката и оборудовани
JP5210136B2 (ja) * 2008-12-05 2013-06-12 株式会社神戸製鋼所 条鋼圧延設備の水冷装置における冷却水供給制御方法
CN202192104U (zh) 2011-07-06 2012-04-18 安徽精诚铜业股份有限公司 一种热轧机的供水电控系统
EP2644718A1 (fr) * 2012-03-27 2013-10-02 Siemens Aktiengesellschaft Procédé de stabilisation de pression
CN103624093A (zh) 2012-08-29 2014-03-12 江苏博际喷雾系统有限公司 钢坯中间坯冷却系统
DE102012215599A1 (de) 2012-09-03 2014-03-06 Sms Siemag Ag Verfahren und Vorrichtung zur dynamischen Versorgung einer Kühleinrichtung zum Kühlen von Metallband oder sonstigem Walzgut mit Kühlmittel
JP6024407B2 (ja) * 2012-11-15 2016-11-16 Ｊｆｅスチール株式会社 鋼板の冷却装置および冷却方法
CN203750996U (zh) 2014-01-14 2014-08-06 中冶南方工程技术有限公司 一种热轧棒、线材生产线轧机浊环水供水系统
EP2921239A1 (fr) * 2014-03-21 2015-09-23 Siemens VAI Metals Technologies GmbH Refroidissement d'un produit de laminage laminé à chaud
EP3335812A1 (fr) * 2016-12-14 2018-06-20 Primetals Technologies Austria GmbH Installation de refroidissement de laminés

Also Published As

Publication number Publication date
WO2018108518A3 (fr) 2018-11-01
WO2018108518A2 (fr) 2018-06-21
US11103906B2 (en) 2021-08-31
RU2019120028A3 (fr) 2021-05-27
JP7210450B2 (ja) 2023-01-23
US20200331046A1 (en) 2020-10-22
RU2019120028A (ru) 2021-01-15
EP3554727B1 (fr) 2020-12-30
EP3554727B2 (fr) 2024-01-31
MX2019005854A (es) 2019-08-12
JP2020513328A (ja) 2020-05-14
EP3335812A1 (fr) 2018-06-20
CN110049830A (zh) 2019-07-23
RU2755133C2 (ru) 2021-09-13

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