EP0924003A2 - Dispositif de refroidissement pour refroidir une bande métallique chaude en mouvement - Google Patents

Dispositif de refroidissement pour refroidir une bande métallique chaude en mouvement Download PDF

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Publication number
EP0924003A2
EP0924003A2 EP98122254A EP98122254A EP0924003A2 EP 0924003 A2 EP0924003 A2 EP 0924003A2 EP 98122254 A EP98122254 A EP 98122254A EP 98122254 A EP98122254 A EP 98122254A EP 0924003 A2 EP0924003 A2 EP 0924003A2
Authority
EP
European Patent Office
Prior art keywords
coolant
cooling device
shut
coolant discharge
lines
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
EP98122254A
Other languages
German (de)
English (en)
Other versions
EP0924003A3 (fr
EP0924003B1 (fr
Inventor
Gerlinde Dipl.-Ing. Djumlija
Jian Ing. Dr. Chen
Andreas Dipl.-Ing. Schweighofer
Johann Oberhumer
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
Voest Alpine Industrienlagenbau 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 Voest Alpine Industrienlagenbau GmbH filed Critical Voest Alpine Industrienlagenbau GmbH
Publication of EP0924003A2 publication Critical patent/EP0924003A2/fr
Publication of EP0924003A3 publication Critical patent/EP0924003A3/fr
Application granted granted Critical
Publication of EP0924003B1 publication Critical patent/EP0924003B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • 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

Definitions

  • the invention relates to a cooling device for cooling a hot moving metal strip by means of laminar coolant jets, consisting of at least one transverse to the tape running direction arranged water box into which at least one coolant supply line opens and from which a plurality of spaced-apart coolant outlets emerge.
  • the hot strip is cooled by laminar cooling water jets, whereby the cooling effect depends very much on the formation of these cooling water jets.
  • a Laminar cooling water jet leads to a much stronger cooling than a turbulent one Jet, since a laminar cooling water jet is able to stick to the hot strip surface break through forming vapor layer and thus achieve a higher cooling effect.
  • a laminar cooling water section essentially consists of several in a row arranged, extending transversely to the tape running water boxes, each Water box has a variety of cooling water drains.
  • Such Cooling device is already known from DE-OS 21 07 664.
  • the cooling water drains formed by siphon tubes arranged next to one another transversely to the direction of tape travel, through which the cooling water is applied to the belt surface.
  • the object of the invention is therefore to avoid these disadvantages and a cooling device to propose to cool a hot moving metal strip by means of laminar coolant jets, which not only during operation but also in the switch-on and Shutdown phase of the cooling device uniform flow conditions in the coolant jets occur and especially after switching off an uncontrolled flow of Coolant is safely avoided.
  • each coolant discharge has a shut-off device on the outlet side assigned.
  • the shut-off device is designed as a slide or ball valve.
  • a significant simplification of the cooling device results from the fact that several or all shut-off devices assigned to the individual coolant discharge lines are mechanically coupled and are connected to a common adjustment drive.
  • the mechanically coupled shut-off devices are formed by a shift shaft which is transverse to the longitudinal axis of the shift shaft at a distance of Coolant discharges to each other through openings and that with an adjustment drive from a position in which the through openings with the coolant drains aligned in a position in which the selector shaft blocks the coolant discharge is adjustable and vice versa.
  • the selector shaft is mounted in a multi-part housing, in which the coolant drains open, and in the area penetrated by through openings Switching shaft in the housing shells inserted annular sealing shells are arranged, which with the coolant discharge lines and the through openings penetrating the selector shaft have aligned through openings.
  • a further stabilization of the flow conditions is achieved in that each coolant drain a diffuser for bundling the coolant jet is assigned, the Shut-off device is arranged downstream of the diffuser and the diameter of the through opening is larger than the diameter of the outlet opening in the diffuser.
  • the coolant discharge lines are downpipes trained, which project substantially vertically upwards in the water tank.
  • the coolant discharge lines are downpipes trained, which project substantially vertically upwards in the water tank.
  • the from DE-OS 21 07 664 known U-tubes result in manufacturing advantages that lead to a substantial reduction in the cost of the cooling device. Overall, one emerges significantly more compact assembly, eliminating the risk of damage from rising or getting stuck Band is significantly reduced.
  • a flow stabilizer is installed in each Coolant drainage.
  • This flow stabilizer is formed by at least one insert, preferably of two at right angles to each other, inserted in the coolant drain and the cross-sectional area of the Coolant drainage in segments dividing guide elements, preferably composed of sheets is.
  • Fig. 1 shows a possible embodiment of the cooling device according to the invention for Cooling a moving hot metal strip 1 by means of laminar coolant jets.
  • the hot Metal strip 1 is in this case on a transport roller table indicated by a roller table roller 2 challenged from a rolling mill, not shown, or a single roll stand and at a distance below the cooling device with a preselected transport speed transported.
  • the cooling device consists of several in a row Water boxes 3 arranged in the direction of belt travel, one of which is shown in FIGS. 1 and 2 is shown.
  • the water tank 3 has a central coolant supply 4 and a large number of coolant discharge lines 5 arranged in two rows (FIG.
  • shut-off devices 6 which serve as downpipes are formed and protrude vertically upwards inside the water box 3. Exit side connect to the coolant discharge lines 5 shut-off devices 6, with which the exit of Coolant from all coolant discharge lines 5 interrupted or started at the same time can be.
  • the type of shut-off device is largely arbitrary. Is restrictive only to be taken into account here that the coolant jet leaving the shut-off device 6 must have laminar flow properties.
  • the shut-off devices 6 can for example be designed as a slide or ball valves.
  • the shut-off elements 6 are shown in FIGS. 1 and 2 coupled by a common switching shaft 7, which is connected to a common adjustment drive 9 is connected.
  • Fig. 3 this is by a continuous shift shaft 7 and a multi-part housing 10, 11, 12 to a single compact component shutoff 6 shown in detail.
  • the control shaft 7 is at a distance from the central axes 13, 14 of the coolant lines 5 from Passages through 15, which in the open position of the shift shaft 7 with the Coolant lines 5 are aligned.
  • the selector shaft 7 With the adjustment drive 9, the selector shaft 7 is in a 90 ° pivoted closed position blocking the flow of the coolant is rotatable.
  • the Switch shaft 7 is in a two-part housing formed by two housing shells 10, 11 via rotary bearings 16, 17 rotatably mounted and by means of axial bearings 18 in position to Coolant discharges 5 set.
  • the coolant discharge lines 5 open into the housing 12, each coolant discharge line 5 a diffuser 21 inserted into the housing 12 for sealing the bundling of the Coolant jets is assigned.
  • the clear width of the passage opening takes in the diffuser 21 linearly in the direction of flow and then expands in the shut-off device 6 erratic, so that the diameter of the through hole 15 is larger than the diameter the passage channel in the diffuser 21.
  • a flow stabilizer 22 is located in each coolant discharge line 5 to stabilize the flow built-in, of two guide elements standing cross-shaped at right angles to each other 23, 24, preferably sheet metal is formed, through which the open cross-sectional area of the coolant drain is divided into four segments of equal size over a limited distance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP98122254A 1997-12-18 1998-11-23 Dispositif de refroidissement pour refroidir une bande métallique chaude en mouvement Expired - Lifetime EP0924003B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0213897A AT406834B (de) 1997-12-18 1997-12-18 Kühlvorrichtung zum kühlen eines heissen bewegten metallbandes
AT213897 1997-12-18

Publications (3)

Publication Number Publication Date
EP0924003A2 true EP0924003A2 (fr) 1999-06-23
EP0924003A3 EP0924003A3 (fr) 2000-08-16
EP0924003B1 EP0924003B1 (fr) 2002-10-16

Family

ID=3528593

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98122254A Expired - Lifetime EP0924003B1 (fr) 1997-12-18 1998-11-23 Dispositif de refroidissement pour refroidir une bande métallique chaude en mouvement

Country Status (4)

Country Link
US (1) US6178768B1 (fr)
EP (1) EP0924003B1 (fr)
AT (2) AT406834B (fr)
DE (1) DE59805962D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008010062A1 (de) * 2007-06-22 2008-12-24 Sms Demag Ag Verfahren zum Warmwalzen und zur Wärmebehandlung eines Bandes aus Stahl
CN102266831B (zh) * 2011-07-08 2012-11-07 东北大学 一种可形成高密度喷射流的冷却装置及制造方法
CN108941222A (zh) * 2018-09-28 2018-12-07 南京先河工程技术有限公司 一种模块化设计密闭冷却水箱装置及快换方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51111411A (en) * 1975-03-27 1976-10-01 Nippon Steel Corp Variable spray length spray header
JPS5554210A (en) * 1978-10-16 1980-04-21 Ishikawajima Harima Heavy Ind Co Ltd Cooler for hot rolled material
JPS55153615A (en) * 1979-05-21 1980-11-29 Nippon Steel Corp Method and apparatus for cooling hot steel sheet
JPS61162223A (ja) * 1985-01-10 1986-07-22 Mitsubishi Heavy Ind Ltd 加速冷却装置におけるノズルヘツダ
JPS62118914A (ja) * 1985-11-19 1987-05-30 Kawasaki Steel Corp 熱金属板の冷却装置
EP0247021A2 (fr) * 1986-05-22 1987-11-25 VOEST-ALPINE Eisenbahnsysteme Gesellschaft m.b.H. Dispositif pour le traitement thermique commandé de pièces d'aiguillages
JPS6313610A (ja) * 1986-07-03 1988-01-20 Nippon Steel Corp 熱鋼板の冷却方法
JPH0760331A (ja) * 1993-08-30 1995-03-07 Nippon Steel Corp パイプラミナノズル
JPH08155527A (ja) * 1994-12-09 1996-06-18 Nkk Corp 熱間圧延金属帯の冷却装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2319309A (en) * 1940-07-15 1943-05-18 United Eng Foundry Co Apparatus for rolling metal strip
US3025817A (en) * 1959-03-25 1962-03-20 Western Electric Co Apparatus for dispensing fluid material
BE648850A (fr) * 1963-06-04
US3294107A (en) * 1964-03-02 1966-12-27 Jones & Laughlin Steel Company Apparatus for cooling hot bodies
NL156068B (nl) 1970-02-17 1978-03-15 Koninklijke Hoogovens En Staal Koelsysteem voor een bewegende metaalband.
SU910266A1 (ru) * 1980-01-04 1982-03-07 Магнитогорский государственный институт по проектированию металлургических заводов Устройство дл охлаждени гор чекатанной полосы
US4497180A (en) * 1984-03-29 1985-02-05 National Steel Corporation Method and apparatus useful in cooling hot strip
IT1177873B (it) 1984-07-04 1987-08-26 Centro Speriment Metallurg Dispositivo per il raffredamento di laminati a caldo piani
DE3704599A1 (de) * 1987-02-13 1988-08-25 Schloemann Siemag Ag Verfahren und vorrichtung zur kuehlung von walzband
JPS642648A (en) * 1987-06-26 1989-01-06 Lion Corp Absorbent article
US4899547A (en) * 1988-12-30 1990-02-13 Even Flow Products, Inc. Hot strip mill cooling system
US4880032A (en) * 1989-06-20 1989-11-14 Doutt Kingsley A Multiple port valve

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51111411A (en) * 1975-03-27 1976-10-01 Nippon Steel Corp Variable spray length spray header
JPS5554210A (en) * 1978-10-16 1980-04-21 Ishikawajima Harima Heavy Ind Co Ltd Cooler for hot rolled material
JPS55153615A (en) * 1979-05-21 1980-11-29 Nippon Steel Corp Method and apparatus for cooling hot steel sheet
JPS61162223A (ja) * 1985-01-10 1986-07-22 Mitsubishi Heavy Ind Ltd 加速冷却装置におけるノズルヘツダ
JPS62118914A (ja) * 1985-11-19 1987-05-30 Kawasaki Steel Corp 熱金属板の冷却装置
EP0247021A2 (fr) * 1986-05-22 1987-11-25 VOEST-ALPINE Eisenbahnsysteme Gesellschaft m.b.H. Dispositif pour le traitement thermique commandé de pièces d'aiguillages
JPS6313610A (ja) * 1986-07-03 1988-01-20 Nippon Steel Corp 熱鋼板の冷却方法
JPH0760331A (ja) * 1993-08-30 1995-03-07 Nippon Steel Corp パイプラミナノズル
JPH08155527A (ja) * 1994-12-09 1996-06-18 Nkk Corp 熱間圧延金属帯の冷却装置

Non-Patent Citations (8)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch, Week 198302 Derwent Publications Ltd., London, GB; Class M21, AN 1983-03788K XP002140413 -& SU 910 266 A (MAGN METAL WKS DES), 7. März 1982 (1982-03-07) *
PATENT ABSTRACTS OF JAPAN vol. 004, no. 096 (M-020), 11. Juli 1980 (1980-07-11) -& JP 55 054210 A (ISHIKAWAJIMA HARIMA HEAVY IND CO LTD), 21. April 1980 (1980-04-21) *
PATENT ABSTRACTS OF JAPAN vol. 005, no. 025 (M-055), 14. Februar 1981 (1981-02-14) -& JP 55 153615 A (NIPPON STEEL CORP), 29. November 1980 (1980-11-29) *
PATENT ABSTRACTS OF JAPAN vol. 010, no. 368 (M-543), 9. Dezember 1986 (1986-12-09) -& JP 61 162223 A (MITSUBISHI HEAVY IND LTD), 22. Juli 1986 (1986-07-22) *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 208 (M-709), 15. Juni 1988 (1988-06-15) -& JP 63 013610 A (NIPPON STEEL CORP), 20. Januar 1988 (1988-01-20) *
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 06, 31. Juli 1995 (1995-07-31) -& JP 07 060331 A (NIPPON STEEL CORP), 7. März 1995 (1995-03-07) *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 10, 31. Oktober 1996 (1996-10-31) -& JP 08 155527 A (NKK CORP), 18. Juni 1996 (1996-06-18) *
PATENT ABSTRACTS OF JAPAN vol. 33 (M-638), 4. November 1987 (1987-11-04) -& JP 62 118914 A (KAWASAKI STEEL CORP), 30. Mai 1987 (1987-05-30) *

Also Published As

Publication number Publication date
US6178768B1 (en) 2001-01-30
ATA213897A (de) 2000-02-15
EP0924003A3 (fr) 2000-08-16
DE59805962D1 (de) 2002-11-21
AT406834B (de) 2000-09-25
ATE226118T1 (de) 2002-11-15
EP0924003B1 (fr) 2002-10-16

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