EP2777836A1 - Dispositif de refroidissement doté de poutres de pulvérisation avec sorties allongées - Google Patents

Dispositif de refroidissement doté de poutres de pulvérisation avec sorties allongées Download PDF

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Publication number
EP2777836A1
EP2777836A1 EP13159145.5A EP13159145A EP2777836A1 EP 2777836 A1 EP2777836 A1 EP 2777836A1 EP 13159145 A EP13159145 A EP 13159145A EP 2777836 A1 EP2777836 A1 EP 2777836A1
Authority
EP
European Patent Office
Prior art keywords
cooling device
spray bar
cooling
outlets
finishing train
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Withdrawn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
EP13159145.5A
Other languages
German (de)
English (en)
Inventor
Florian Pöschl
Jian Dr. Chen
Sieglinde Ehgartner
Reinhard Dr. Karl
Erich Opitz
Alois Seilinger
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
Siemens VAI Metals Technologies GmbH Austria
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 Siemens VAI Metals Technologies GmbH Austria filed Critical Siemens VAI Metals Technologies GmbH Austria
Priority to EP13159145.5A priority Critical patent/EP2777836A1/fr
Publication of EP2777836A1 publication Critical patent/EP2777836A1/fr
Withdrawn legal-status Critical Current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
    • 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

Definitions

  • the present invention relates to a cooling device for cooling a metal hot strip, in particular a steel strip, wherein the cooling device has a spray bar, which is arranged above a pass line of the metal hot strip and on its underside has outlets over which the metal hot strip from above with a liquid cooling medium - in particular water - can be acted upon.
  • Cooling devices of the type mentioned are well known. As a rule, above a passing line of the metal hot strip - in some cases additionally below the passing line of the metal hot strip - spray bars, via which the metal strip is acted upon by a liquid cooling medium (usually water).
  • a liquid cooling medium usually water
  • the spray bar runs empty when it is turned off, so it is no longer charged with the cooling medium.
  • the emptying of the spray bar can not be influenced. Furthermore passes when switching on the spray bar, so when re-controlling the corresponding spray bar, a relatively large time until the spray bar is filled with the cooling medium again. Furthermore, the air in the spray bar exits uncontrollably from the spray bar via the outlets. This results in significant variations in the actual resulting spray pattern and the amount of cooling medium actually applied to the metal hot strip.
  • the object of the present invention is to develop a cooling device for intensive cooling in such a way that the above-mentioned problems are at least partially eliminated.
  • a cooling device of the aforementioned type is configured in that the outlets have tubular extensions which project upwards into the spray bar. This ensures that the spray bar after switching off not completely, but only partially empty runs. Corresponding thereto, on the one hand, the amount of cooling medium can be reduced, which emerges uncontrollably after switching off the corresponding spray bar from the spray bar. Furthermore, the time required to close the spray bar after reconnecting can be shortened the spray bar back to fill with the cooling medium.
  • the spray bar has a clear height.
  • a vertical length of the tubular extensions at least 50%, better at least 75%, the clear height.
  • a distance of the upper edge of the tubular extensions from the top of the spray bar at about 15 mm to about 25 mm.
  • the spray bar on its upper side on a venting device can escape via the air contained in the injection bar in the injection bar, but not the injected into the spray bar cooling medium.
  • escapes when switching on the spray bar so when starting again the supply of cooling medium, the air in the spray bar completely or at least almost completely through the venting, but not via the spray nozzles.
  • the cooling device may be part of a finishing train.
  • the cooling device is arranged in front of a rolling stand of a finishing train.
  • the named roll stand can be the single or the first roll stand of the finishing train.
  • the rolling stand of the finishing train it is furthermore possible for the rolling stand of the finishing train to be a rear rolling stand of the finishing train and for the cooling device to be arranged behind a front rolling stand of the finishing train, ie between two rolling stands of the finishing train.
  • the cooling device can be arranged behind the finishing train, ie be part of a (pure) cooling section.
  • FIG. 1 shows schematically various treatment steps in producing a metal hot strip 1.
  • the metal hot strip 1 may be in particular a steel strip. Alternatively, it may be, for example, an aluminum band, a copper band or a brass band or other non-ferrous band.
  • the metal hot strip 1 is usually rolled at least in a finishing train 2.
  • the finishing train 2 has for rolling of the metal hot strip 1 usually a plurality of rolling stands 3.
  • the metal hot strip 1 passes through the finishing train 2 in a strip running direction x.
  • the metal hot strip 1 is rolled before rolling in the finishing train 2 in a roughing 4.
  • the metal hot strip 1 - alternatively or additionally - before the finishing train 2 or between the rolling stands 3 of the finishing train 2 with the liquid cooling medium 6 is cooled.
  • the cooling medium 6 water is often used.
  • the cooling device 7 can - depending on requirements - in front of the finishing train 2, between the rolling stands 3 of the finishing train 2 or in the cooling section 5 (in which no reshaping of the metal hot strip 1 more occurs) may be arranged.
  • cooling devices 7 will be explained in more detail. However, the corresponding embodiments may also be valid for the other cooling devices 7.
  • the cooling device 7 has an upper spray bar 8.
  • the upper spray bar 8 is arranged above a pass line (pass line), on which the hot metal strip 1 passes through the cooling device 7.
  • the cooling device 7 may additionally have a lower spray bar 9, which is arranged below the pass line.
  • the lower spray bar 9 is of minor importance in the context of the present invention. The following statements always refer to the upper spray bar. 8
  • the cooling medium 6 is supplied to the upper spray bar 8 from the side, ie horizontally and transversely to the strip running direction x.
  • the upper spray bar 8 acts on the metal hot strip 1 via outlets 10 from above with the cooling medium 6.
  • the outlets 10 are according to the 4 and 5 arranged on the underside 11 of the upper spray bar 8.
  • the outlets 10, as shown in FIG. 4 tubular extensions 14 on.
  • the tubular extensions 14 project upwardly into the upper spray bar 8.
  • the upper spray bar 8 has a clear height h.
  • the tubular extensions 14 have a vertical length 1.
  • the vertical length 1 of the tubular extensions 14 is preferably at least 50% of the clear height h. It can be even larger and even be at least 75% of the clear height h. It has proven to be optimal if a distance a of the upper edges of the outlets 10 from the upper side 12 of the upper spray bar 8 is approximately 15 mm to approximately 25 mm.
  • the outlets 10 are introduced from below into the upper spray bar 8, for example screwed.
  • the tubular extensions 14 are preferably arranged on the outlets 10, so are introduced together with the outlets 10 in the upper spray bar 8 and optionally removed again. Accordingly, an outer diameter d of the tubular extensions 14 is at most as large as a clear width w of passage openings 15 into which the outlets 10 are introduced.
  • the upper spray bar 8 may additionally have a ventilation device 13 on its upper side 12.
  • the air located in the upper spray bar 8 can escape via the venting device 13.
  • the liquid cooling medium 6 fed into the upper spray bar 8 can not escape via the venting device 13.
  • the venting device 13 may be designed for this purpose as an automatically operating valve - for example with a float - or as a controlled valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP13159145.5A 2013-03-14 2013-03-14 Dispositif de refroidissement doté de poutres de pulvérisation avec sorties allongées Withdrawn EP2777836A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13159145.5A EP2777836A1 (fr) 2013-03-14 2013-03-14 Dispositif de refroidissement doté de poutres de pulvérisation avec sorties allongées

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13159145.5A EP2777836A1 (fr) 2013-03-14 2013-03-14 Dispositif de refroidissement doté de poutres de pulvérisation avec sorties allongées

Publications (1)

Publication Number Publication Date
EP2777836A1 true EP2777836A1 (fr) 2014-09-17

Family

ID=47900794

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13159145.5A Withdrawn EP2777836A1 (fr) 2013-03-14 2013-03-14 Dispositif de refroidissement doté de poutres de pulvérisation avec sorties allongées

Country Status (1)

Country Link
EP (1) EP2777836A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111801174A (zh) * 2018-02-26 2020-10-20 Sms集团有限公司 用于冷却待冷却的物件的冷却装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5970417A (ja) * 1982-10-14 1984-04-20 Nippon Kokan Kk <Nkk> フラツトラミナ−フロ−用ノズルヘツダ−
DE3428462A1 (de) * 1984-08-02 1986-02-13 W M S - B. Brams Gmbh, 4100 Duisburg Verfahren und vorrichtung zum kuehlen von bandfoermigem gut mittels wasservorhang
EP1938911A1 (fr) * 2006-12-27 2008-07-02 VAI Industries (UK) Ltd. Dispositif et procédé pour refroidissement contrôlé
EP2540404A1 (fr) * 2011-06-27 2013-01-02 Siemens Aktiengesellschaft Procédé de commande pour un laminoir à bandes à chaud
EP2540407A1 (fr) * 2010-07-22 2013-01-02 Nippon Steel & Sumitomo Metal Corporation Système de refroidissement de plaque d'acier et procédé de refroidissement de plaque d'acier

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5970417A (ja) * 1982-10-14 1984-04-20 Nippon Kokan Kk <Nkk> フラツトラミナ−フロ−用ノズルヘツダ−
DE3428462A1 (de) * 1984-08-02 1986-02-13 W M S - B. Brams Gmbh, 4100 Duisburg Verfahren und vorrichtung zum kuehlen von bandfoermigem gut mittels wasservorhang
EP1938911A1 (fr) * 2006-12-27 2008-07-02 VAI Industries (UK) Ltd. Dispositif et procédé pour refroidissement contrôlé
EP2540407A1 (fr) * 2010-07-22 2013-01-02 Nippon Steel & Sumitomo Metal Corporation Système de refroidissement de plaque d'acier et procédé de refroidissement de plaque d'acier
EP2540404A1 (fr) * 2011-06-27 2013-01-02 Siemens Aktiengesellschaft Procédé de commande pour un laminoir à bandes à chaud

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111801174A (zh) * 2018-02-26 2020-10-20 Sms集团有限公司 用于冷却待冷却的物件的冷却装置

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