EP2583772B1 - Strangführungsvorrichtung - Google Patents

Strangführungsvorrichtung Download PDF

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Publication number
EP2583772B1
EP2583772B1 EP12199706.8A EP12199706A EP2583772B1 EP 2583772 B1 EP2583772 B1 EP 2583772B1 EP 12199706 A EP12199706 A EP 12199706A EP 2583772 B1 EP2583772 B1 EP 2583772B1
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EP
European Patent Office
Prior art keywords
cooling
cooling zone
segment
volume flow
guide device
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.)
Active
Application number
EP12199706.8A
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German (de)
English (en)
French (fr)
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EP2583772A1 (de
Inventor
Dr. Erich Hovestädt
Dr. Markus Reifferscheid
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.)
SMS Group GmbH
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SMS Group 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.)
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Priority claimed from DE102010052247A external-priority patent/DE102010052247A1/de
Priority claimed from DE102011003194A external-priority patent/DE102011003194A1/de
Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Priority to EP12199706.8A priority Critical patent/EP2583772B1/de
Publication of EP2583772A1 publication Critical patent/EP2583772A1/de
Application granted granted Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—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

Definitions

  • the invention relates to a strand guiding device for guiding a metal strand after its exit from a mold in a continuous casting plant.
  • a strand guiding device of the type mentioned is in the prior art, for example from the Japanese publication JP 57 139460 known.
  • the strand guiding device disclosed therein serves to guide a metal strand after it leaves a mold in a continuous casting plant.
  • the strand guiding device is equipped with a secondary cooling device for cooling the metal strand in the strand guiding device.
  • the secondary cooling device comprises a pump device for pumping a cooling medium, for example cooling water, through a cooling line network to individual cooling zones distributed along the strand guide.
  • the cooling zones each form part of the cooling line network.
  • the cooling water is injected by means of nozzle devices onto the metal strand to be cooled in the strand guiding device.
  • Each cooling zone is individually associated with valves for adjusting the volume flow or the pressure of the cooling water in the respective cooling zone.
  • the pump device is assigned a pump control loop for regulating the pressure of the pumped by the pump cooling water.
  • strand guiding devices in which the pairs of rollers typically used for guiding the strand in so-called segments are summarized as structural units.
  • the segments may, but need not, have variable pitch adjustment actuators; see for example DE 10 2008 009 136 A1 , From the German publication DE 10 2008 004 911 A1 the use of two-fluid nozzles within secondary cooling devices is known.
  • the dual-fluid nozzles advantageously allow a variable adjustment of the proportions of two different cooling media used, for example air and cooling water.
  • the German Offenlegungsschrift DE 101 04 348 A1 discloses a strand guide segment with a roller carrier for guiding the casting strand. Also arranged on the roller carrier is a series of spray nozzles through which coolant is sprayed onto the strand.
  • the cooling medium is conducted via pipelines to these nozzles.
  • the pipelines can be connected via flanges or clamping plates to a further coolant supply network of the strand guiding device.
  • the Japanese publication JP 2009195959 discloses a strand guiding apparatus for guiding a metal strand after its exit from the mold in a continuous casting plant.
  • the individual roller segments of the strand guide are associated with cooling lines, each having at least one valve and a nozzle device for spraying a coolant between two adjacent segments on the guided metal strand.
  • the valve is also arranged on the segment via the pipes attached to the segment.
  • the invention has the object of developing a known strand guiding device with a secondary cooling device to the effect that the design complexity for the secondary cooling device is reduced and the secondary cooling is improved.
  • the strand guiding device preferably also has, in addition to at least one first roller segment with at least partially associated cooling zone, at least one second roller segment with at least one actuator for variably setting the jaw width of the rollers of the roller segment.
  • the actuator is, for example, a hydraulic cylinder.
  • the actuators serve to realize a targeted thickness adjustment of the strand when passing through the strand guiding device.
  • the actuators are optional for the individual segments, which means that they are not mandatory.
  • the actuators can be arranged both on segments with associated cooling zone as well as on segments without associated cooling zone.
  • the length of the cooling lines between the valve and the nozzle means or the aforementioned cooling zones specific devices and the nozzle devices shortened compared to an arrangement of these components in the distribution space.
  • the friction and flow losses are reduced within the cooling zone, thereby advantageously a more precise adjustment of the nozzle devices and their spray patterns is possible.
  • the complex cooling lines for the secondary cooling device were located at least predominantly within a distributor space away from the strand guiding device.
  • the casting of more demanding grades however, increasingly requires a greater majority of cooling zones along the strand guide, in order to be able to set the most individual spray pattern and cooling behavior of the cooling zones when guiding the metal strand within the strand guiding device.
  • the distribution space traditionally provided for the valves and the cooling lines reaches its limits in a purely capacitive manner with a larger number of intended cooling zones.
  • valves for the individual cooling zones are arranged in each case in the region of the segment carrier in front of the clamping plates, because this advantageously allows a displacement of the valves and the complex cooling lines per cooling zone at least largely out of the confined distribution space under utilization from further available space, just in the area of the segment carrier.
  • the secondary cooling of the metal strand takes place within the strand guide device after the metal strand has exited the mold.
  • the metal strand is further cooled by spraying cooling water from outside under pressure onto the strand shell.
  • the metal strand heat is further withdrawn and the strand shell continues to grow until the metal strand is finally completely solidified.
  • a (number word) cooling zone per roller segment can be provided.
  • a plurality of the cooling zones may be provided which are distributed over a single one of the roller segments.
  • the individual cooling zones can be arranged distributed in and / or transversely to the conveying direction of the metal strand above the roller segment.
  • the at least one valve - viewed in the flow direction of the cooling water - is arranged in front of the clamping plate, the at least one cooling zone also be formed so that it extends over a plurality of roller segments.
  • the cooling medium can be either volume flow or pressure controlled.
  • the strand guiding device and in particular the secondary cooling device comprises a cooling zone volume flow measuring device for detecting the actual volume flow of the cooling medium in the cooling zone and a cooling zone volume flow control device for determining a cooling zone volume flow control difference as the difference between a predetermined cooling zone Volume flow setpoint and the actual volume flow. Furthermore, the volume flow control device is used to control the valve of the cooling zone in accordance with the determined cooling zone volume flow control difference for controlling the volume flow to the predetermined cooling zone volume flow setpoint.
  • the cooling zone volume flow control device and / or the cooling zone volume flow measuring device can be arranged in front of the clamping plate or on the roller segment in the region of the segment carrier, as viewed in the flow direction of the cooling medium.
  • the strand guiding device and in particular the secondary cooling device in the case of pressure control of the cooling zone comprises a cooling zone pressure measuring device for detecting the actual pressure of the cooling medium in the cooling zone and a cooling zone pressure control device for determining a cooling zone pressure control difference as the difference between a predetermined cooling zone pressure setpoint and the actual pressure.
  • the pressure control device is used to control the valve of the cooling zone in accordance with the determined cooling zone pressure control difference for the purpose of regulating the pressure to the predetermined cooling zone pressure setpoint.
  • the strand guiding device comprises a conversion device for converting a predetermined cooling zone volume flow setpoint using a predetermined pressure-volume flow characteristic of the cooling zone in the cooling zone pressure setpoint.
  • the cooling zone pressure regulating device and / or the cooling zone pressure measuring device and / or the conversion device can each be arranged in front of the clamping plate or on the roller segment in the area of the segment carrier - viewed in the flow direction of the cooling medium.
  • volume flow or pressure control can be provided per cooling zone, but within the strand guide device and in particular on a roller segment or in the region of the segment carrier, depending on the design of the local cooling zone (s), both volume flow as well as pressure controls be provided equally.
  • the nozzle device of the present invention may comprise either at least one single-fluid nozzle and / or at least one dual-fluid nozzle.
  • the single-component nozzle is typically used for the use of cooling water as a cooling medium.
  • the two-component nozzle typically the two cooling media cooling water and air are swirled by means of a special mixing body to a water-air mixture and then injected by means of the two-fluid nozzle on the metal strand.
  • the two-fluid nozzle produces a finer cooling water mist and, with the correct dosage, a higher cooling impulse of the water droplets striking the metal strand.
  • the nozzle device is advantageously designed as a nozzle bar with a plurality of nozzles.
  • reference numeral 500 denotes a fictitious dividing line between a water distribution space 250 and a segment carrier or segment.
  • the cooling medium is preferably cooling water.
  • FIG. 1 1 shows a continuous caster 200 having a mold 210 and a strand guiding device 100 arranged downstream of the mold.
  • the strand guiding device serves to guide a metal strand after it leaves the mold 210.
  • the strand guiding device 100 consists essentially of a plurality of roller segments 120-k with 1 ⁇ k ⁇ K and with k, K elements from N (set of natural numbers). Upper frame and lower frame of each segment are clamped together, for example via tie rods, that is screwed, or via actuators 195, preferably hydraulic cylinder.
  • the individual roller segments 120-k are supported by at least one segment carrier 220.
  • the segment carriers 220 can, as in FIG. 1 shown for a group of segments designed as a structural unit.
  • a secondary cooling device 110 is provided for cooling the metal strand 300 during its passage through the strand guiding device 100 in the conveying direction F.
  • a pump device 116 is preferably arranged according to the present invention, optionally together with elements of a pump control loop for setting a predetermined pressure or flow rate set point of the cooling water at the outlet of the pump device.
  • FIG. 2 1 shows a first embodiment of the secondary cooling device 110 according to the invention.
  • the secondary cooling device comprises the pump device 116 with a preferably associated pump control device 117.
  • the pump control device 117 can be designed to control either the pressure or the volume flow of a cooling medium, typically cooling water, in the cooling line 112 at the outlet Pump device to each set target values to regulate.
  • the reference numeral 119 represents a pressure measuring device and in the case of a volume flow control, it represents a volumetric flow meter.
  • the pump device 116 together with the pump control device 117 is typically arranged in a water distribution space 250 away from the strand guiding device.
  • the cooling medium delivered by the pump device 116 is conveyed via a network of cooling lines 112 to cooling zones 114-i with 1 ⁇ i ⁇ I and i, I elements from N of the associated nozzle devices 115.
  • the nozzle devices are typically designed as nozzle bars, each with a plurality of individual nozzles either in the form of single-fluid or two-fluid nozzles.
  • two-fluid nozzles is in addition to the in FIG. 2 shown and ensured via the network of cooling lines supply the nozzles with cooling water also the supply of the nozzles with a second medium, for example air, required.
  • a possibly required for the second cooling medium parallel cooling pipe network is in FIG. 2 Not shown.
  • the segments 120-1, ...- 5 are each assigned cooling zones. Specifically, two cooling zones 114-1 and 114-2 are associated with the first roller segment 120-1.
  • the second roller segment 120-2 is associated with exactly one (number word) cooling zone 114-3.
  • the roll segments 120-3, 120-4 and 120-5 are each assigned the same cooling zone 114-4; that is, this cooling zone is distributed over the three said segments.
  • Each cooling zone is characterized in that the volume flow or the pressure of the cooling medium, typically cooling water, in the cooling zone via its own, the cooling zone associated valve 118 is individually adjustable.
  • the valves 118 are pressure-controlled by way of example. Accordingly, the pressure of the cooling medium is respectively detected at the outlet of the valve 118 by means of a cooling zone pressure measuring device 170 and controlled by means of a cooling zone pressure control device 180 to a predetermined cooling zone pressure setpoint.
  • valves and preferably also their associated cooling zone pressure measuring devices 170 and cooling zone pressure control devices 180, are arranged neither in the distributor space 250 nor on the segments, but in the region II of the segment carrier 220 , This means in any case that the said elements - viewed in the direction of flow of the cooling water - in front of the respective clamping plates 140-I, with 1 ⁇ I ⁇ L and I, L elements of N, are arranged.
  • a conversion device 190 can be provided for converting an actual predetermined cooling zone volume flow setpoint with the aid of a predetermined pressure / flow characteristic for the respective cooling zone 114-i in FIG the cooling zone pressure setpoint. This will then, as in FIG. 2 shown transferred from the conversion device 190 to the cooling zone pressure controller 180.
  • the conversion device 190 can be implemented as a software or hardware module in a central automation computer for the continuous casting plant, in particular for the strand guiding device. Alternatively, however, according to the present invention, it may also be arranged in the region II. Of the segment carrier 220 or directly on the segment 120, preferably together with the cooling zone pressure or volumetric flow controller 160, 180 and the valve 118.
  • roller segments and actuators 195 may be assigned, preferably in the form of hydraulic cylinders, for variably setting the jaw width of the respective roller segments 120-K.
  • These actuators 195 can be arranged both on segments, which is associated with a cooling zone, as well as on segments, which is associated with no cooling zone.
  • at least one hydraulic valve 197 with the associated mouth width control device 198 for actuating the hydraulic valve 197 in the region II. of the segment carrier 220 - seen in the flow direction of the hydraulic fluid through the hydraulic valve 197 - is arranged in front of a hydraulic clamping plate 199.
  • the hydraulic clamping plate 199 serves as a detachable coupling point between one of the segments 120-k and the segment carrier for the hydraulic line 113. Notwithstanding the illustration in FIG. 2 for example, a plurality of hydraulic valves 197 may be provided in region II. of the segment carrier, which are individually controlled by the jaw width control device 198 for individual activation / adjustment of the individual hydraulic cylinders 195.
  • FIG. 3 shows a second embodiment of the inventive secondary cooling device 110. It differs from that in the FIG. 2 shown embodiment only in that the valves 118 in the area II.
  • the segment carrier 220 are not pressure, but volume flow controlled. To this Purpose of the valves 118 at their outputs each cooling zone volume flow measuring devices 150 for detecting the local volume flows and cooling zone volume flow control devices 160 assigned, the latter for driving the valves 118 so that sets a predetermined volume flow setpoint for each cooling zone.
  • the cooling zone volume flow measuring devices 150 and / or the cooling zone volume flow control devices 160 are arranged according to the second exemplary embodiment together with the valves 118 in the region II.
  • the segment carrier 220 in front of the clamping plates 140-I.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP12199706.8A 2010-05-19 2011-02-01 Strangführungsvorrichtung Active EP2583772B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12199706.8A EP2583772B1 (de) 2010-05-19 2011-02-01 Strangführungsvorrichtung

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE102010020937 2010-05-19
DE102010052247A DE102010052247A1 (de) 2010-11-23 2010-11-23 Vorrichtung und Verfahren zur geregelten Sekundärkühlung einer Stranggießanlage
DE102011003194A DE102011003194A1 (de) 2010-05-19 2011-01-26 Rolleneinrichtung
EP2011000359 2011-01-27
EP11704533.6A EP2571641B1 (de) 2010-05-19 2011-02-01 Strangführungsvorrichtung
EP12199706.8A EP2583772B1 (de) 2010-05-19 2011-02-01 Strangführungsvorrichtung

Related Parent Applications (3)

Application Number Title Priority Date Filing Date
EP11704533.6A Division-Into EP2571641B1 (de) 2010-05-19 2011-02-01 Strangführungsvorrichtung
EP11704533.6A Division EP2571641B1 (de) 2010-05-19 2011-02-01 Strangführungsvorrichtung
EP11704533.6 Division 2011-02-01

Publications (2)

Publication Number Publication Date
EP2583772A1 EP2583772A1 (de) 2013-04-24
EP2583772B1 true EP2583772B1 (de) 2015-10-21

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ID=43984149

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EP11704533.6A Active EP2571641B1 (de) 2010-05-19 2011-02-01 Strangführungsvorrichtung

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EP (2) EP2583772B1 (zh)
CN (2) CN103170595B (zh)
WO (1) WO2011144266A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3354372A1 (de) * 2017-01-25 2018-08-01 SMS Group GmbH Kühlsystem, hüttentechnische anlage und verfahren zum betreiben eines kühlsystems

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103480812B (zh) * 2013-08-16 2016-03-02 中国重型机械研究院有限公司 一种配有幅切支路的二冷水支路系统
AT517772B1 (de) * 2015-09-07 2018-12-15 Primetals Technologies Austria GmbH Sekundärkühlung eines Strangs in einer Stranggießanlage
DE102018205685A1 (de) * 2018-04-13 2019-10-17 Sms Group Gmbh Kühleinrichtung und Verfahren zu deren Betrieb
DE102022206953A1 (de) 2022-07-07 2024-01-18 Sms Group Gmbh Strangführungsvorrichtung und Verfahren für deren Umrüstung

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Publication number Priority date Publication date Assignee Title
DE1961507A1 (de) 1969-12-08 1971-06-16 Marotta Scientific Controls Durchflussregelsystem fuer gleichbleibende Fluessigkeitsabgabe
DE2344438A1 (de) 1972-09-06 1974-04-11 Concast Ag Verfahren zum steuern der kuehlung eines aus einer durchlaufkokille austretenden stranges und vorrichtung zur durchfuehrung dieses verfahrens
JPS57139460A (en) 1981-02-20 1982-08-28 Kawasaki Steel Corp Control method for secondary cooling water in continuous casting installation
US4433717A (en) 1980-04-02 1984-02-28 Nippon Steel Corporation Process for bow type continuous casting
US4658882A (en) 1981-01-22 1987-04-21 Nippon Steel Corporation Machine for direct rolling of steel casting and producing steel product therefrom
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EP1807230A1 (de) 2004-11-09 2007-07-18 SMS Demag AG Steuer- und/oder regeleinrichtung für ein stützrollengerüst einer stranggiessvorrichtung für metalle, insbesondere für stahlwerkstoffe
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DE2344438A1 (de) 1972-09-06 1974-04-11 Concast Ag Verfahren zum steuern der kuehlung eines aus einer durchlaufkokille austretenden stranges und vorrichtung zur durchfuehrung dieses verfahrens
US4433717A (en) 1980-04-02 1984-02-28 Nippon Steel Corporation Process for bow type continuous casting
US4658882A (en) 1981-01-22 1987-04-21 Nippon Steel Corporation Machine for direct rolling of steel casting and producing steel product therefrom
JPS57139460A (en) 1981-02-20 1982-08-28 Kawasaki Steel Corp Control method for secondary cooling water in continuous casting installation
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EP1807230A1 (de) 2004-11-09 2007-07-18 SMS Demag AG Steuer- und/oder regeleinrichtung für ein stützrollengerüst einer stranggiessvorrichtung für metalle, insbesondere für stahlwerkstoffe
DE102009012334A1 (de) 2008-05-13 2009-11-26 Siemens Vai Metals Technologies Gmbh & Co. Verfahren zur Kühlmittelaufbringung auf einen gegossenen Metallstrang in einer Stranggießanlage und Stranggießanlage dazu

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3354372A1 (de) * 2017-01-25 2018-08-01 SMS Group GmbH Kühlsystem, hüttentechnische anlage und verfahren zum betreiben eines kühlsystems

Also Published As

Publication number Publication date
EP2571641B1 (de) 2015-07-08
CN103003008A (zh) 2013-03-27
EP2571641A1 (de) 2013-03-27
EP2583772A1 (de) 2013-04-24
CN103003008B (zh) 2015-12-02
WO2011144266A1 (de) 2011-11-24
CN103170595A (zh) 2013-06-26
CN103170595B (zh) 2016-01-20

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