EP0695590B1 - Dispositif de refroidissement des tÔles et des bandes laminées à chaud - Google Patents

Dispositif de refroidissement des tÔles et des bandes laminées à chaud Download PDF

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Publication number
EP0695590B1
EP0695590B1 EP95810449A EP95810449A EP0695590B1 EP 0695590 B1 EP0695590 B1 EP 0695590B1 EP 95810449 A EP95810449 A EP 95810449A EP 95810449 A EP95810449 A EP 95810449A EP 0695590 B1 EP0695590 B1 EP 0695590B1
Authority
EP
European Patent Office
Prior art keywords
strips
air
nozzle
water
flat
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.)
Expired - Lifetime
Application number
EP95810449A
Other languages
German (de)
English (en)
Other versions
EP0695590A1 (fr
Inventor
Miroslaw Plata
Malcom Hill
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.)
3A Composites International AG
Original Assignee
Alusuisse Lonza Services Ltd
Alusuisse Technology and Management Ltd
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 Alusuisse Lonza Services Ltd, Alusuisse Technology and Management Ltd filed Critical Alusuisse Lonza Services Ltd
Publication of EP0695590A1 publication Critical patent/EP0695590A1/fr
Application granted granted Critical
Publication of EP0695590B1 publication Critical patent/EP0695590B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0861—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with one single jet constituted by a liquid or a mixture containing a liquid and several gas jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0884—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being aligned
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon

Definitions

  • the invention relates to a device for cooling hot-rolled plates and strips made of metal according to the preamble of claim 1.
  • a hot rolling strip points out of a hot rolling mill usually a temperature in the range between about 300 and 500 ° C. For the production of plates this immediately after the hot-rolled strip emerges cut from the hot rolling mill. Since it is not a suitable one Sealing material for vacuum suction cups is there at temperatures can be used above 300 ° C the hot plates for stacking with gripping tools from Roller table can be taken. This handling of the plates is on the one hand personnel-intensive, on the other hand, the Plate surface unwanted traces from the gripping tools stay behind. A quick cooling of the plates could in principle by the roller emulsion when it is carried out of empty runs without stitch acceptance. The one from it resulting large temperature differences on the hot rolled strip would, however, lead to unacceptable deviations from the Lead flatness of the plates.
  • EP-A-0 343 103 describes a method for cooling pressed profiles and rolled strips are known, in which by means of spray nozzles a water mist is generated. This procedure is however, for the rapid inline cooling of hot rolled plates Thickness of more than about 5 mm due to insufficient heat transfer not suitable. This previously known cooling process spray nozzles are used for cooling in EP-A-0 429 394 Metal strands described.
  • a hot-rolled metal strip becomes the surface of the strip to be cooled supplied with cooling water via flat jet nozzles.
  • the flat jet nozzles are of axially parallel, on Scope of a collector rotatably mounted in a housing educated.
  • the collector rotates around its in the direction of belt travel lying axis of rotation are the planes from the Slitting escaping water jets according to the Rotation speed of the collector rotated and perform a wiping movement from the middle of the belt towards the edge of the belt out.
  • EP-A-0 578 607 describes an inline process for cooling profiles emerging from an extruder, at which the spray nozzles known from EP-A-0 343 103 in Modules are installed.
  • the inventors have the Task given a device of to create the type mentioned, with which plates and Tapes checked and brought to a temperature as quickly as possible can be cooled from a maximum of about 250 ° C without flatness deviations occur on the plates.
  • the flat jet nozzle is used escaping water jet preferably at an angle pivoted in a range between 30 and 120 °.
  • the distance from the outlet opening of the flat jet nozzle to Plate or tape surface is preferably from about 100 to 200 mm set.
  • the impact surface of the water jet on the plate or Band surface has a preferably width of about 5 to 10 mm, with the ratio length: width between about 5: 1 and 100: 1.
  • An appropriate frequency for the wiping movement is between about 0.1 and 20 Hz.
  • the nozzle strips can be separated into water-feedable modules be divided or built up from such modules.
  • the nozzle strips or modules preferably have a device extruded base body, in which the Flat jet nozzles are used interchangeably.
  • the Flat jet nozzles are used interchangeably.
  • air chamber covers forming the base body with one directed towards the nozzle outlet openings Air gap placed and the air chambers via connecting channels connected to the air ducts.
  • a hot rolling strip emerges from a hot rolling mill 10 according to FIG. 1a 12, which by means of scissors or saw 14 too Plates 16 cut to length and via a roller table 18 in the transport direction x is moved by a cooling station 20.
  • the in the Cooling station 20 cooled plates 16 are pending further processing temporarily stored as a stack 22.
  • a cut hot rolled strip 12a passes through Cooling station 20, which here in front of the tandem mill stand 21 Finished street is arranged.
  • the tandem mill stand 21 could also be a reversing scaffold.
  • lower and upper nozzle strips 24 in the plate or tape transport direction x arranged. 3 and 4 are modules 26 with three Flat jet nozzles 52 shown.
  • the flat jet nozzles 52 visible nozzle outlet openings 53, one Distance of, for example, 150 mm to the surface 32 of the plate 16 or of the band 12a are regular Intervals of, for example, 100 to 200 mm.
  • the Covers are adjacent to nozzle outlet openings 52 on both sides 34, 36 visible for air chambers 38, 40.
  • Optional additional water nozzles 60 are provided. These water jets 60 are switched on when thicker plates are used 16 or belts 12a at the predetermined transport speed the cooling effect of the flat jet nozzles 52 is insufficient is.
  • each module 26 With their end faces 27 directly adjacent or in The modules 26 form a short distance from one another the lower and upper nozzle bars 24.
  • Each module is 26 Can be fed separately with water and air. How especially out 5, the module 26 preferably has one extruded base body 42 with a longitudinal central water channel 46 and on both sides of the water channel 46 arranged longitudinal air channels 48, 50.
  • Air chambers 38, 40 are connected via connecting channels 62, 64 Air chambers 38, 40 connected. These air chambers 38, 40 are by covers 34, 36 screwed to the base body 42 educated. Between the cover 34, 36 and the by about 45 ° inclined surface of the base body 42 is on the nozzle outlet opening 53 directed air gap 54, 56 arranged.
  • the water channel 46 is via branch channels 58 with the flat jet nozzles 52 connected.
  • the feeding of the additional water jets 60 takes place via another, if necessary the drawing not shown water channel.
  • the air pressure ratios for the two air jets A, B depending on the time t are shown in FIGS. 6 and 7.
  • the air pressure p is set in each case corresponding air duct 48 or 50.
  • the water jet W is first from its normal position by the first air jet A deflected to the maximum and returned to the normal position. Now the deflection of the water jet W follows through the second air jet B in the other direction up to maximum deflection and then back to the normal position. This mutual periodic excursion with a period T takes place, for example, with a Frequency of about 1 Hz.
  • the air jets A and B for deflecting the water jet W can basically be replaced by water jets, in which case the water jet W and the deflecting water jets composing total amount of water is preferably kept constant.
  • the wiping movement runs of the water jet emerging from the flat jet nozzles 52 W transverse to the transport direction x of the plates 16 or of the band 12a, successive nozzles each counter-rotating Carry out wiping movements.
  • the length 1 of the impact surface 30 of the water jet W on the Surface 32 of the plates 16 or the band 12a is, for example 200 mm, the width b for example 5 mm.
  • the Flat jet nozzles 52 are in the nozzle strips 24 or modules 26 arranged such that the impact surfaces 30 are adjacent Touch water jets W when wiping.

Landscapes

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

Claims (4)

  1. Dispositif de refroidissement de tôles (16) et de bandes (12a), en métal, en particulier en aluminium ou en alliage d'aluminium, laminées à chaud, dans lequel le dispositif comporte des moyens (18) pour le transport continu des tôles ainsi qu'une station de refroidissement (20) avec des buses à jet plat (52),
       caractérisé par le fait
       que des buses à jet plat (52) sont disposées sur des barreaux porte-buses (24) orientés selon la direction d'avance (x) des tôles (16) ou des bandes (12a), que les barreaux porte-buses (24) comportent une gaine d'eau (46) orientée longitudinalement et deux gaines d'air (48, 50) orientées longitudinalement et disposées des deux côtés de la gaine d'eau (46), que de la gaine d'eau (46), des gaines de dérivation (58) dérivent en direction des buses à jet plat (52), et que les gaines d'air (48, 50) se terminent dans des fentes (54, 56) orientées en direction des ouvertures de sortie des buses (53), le jet d'eau pouvant, pour l'exécution du mouvement de balayage, être périodiquement et alternativement dévié hors de sa position normale, immédiatement après sa sortie de la buse à jet plat (52), au moyen de jets d'air ou d'eau.
  2. Dispositif selon la revendication 1, caractérisé par le fait que les barreaux porte-buses (24) se divisent en modules (26) alimentés séparément en eau, ou sont constitués de tels modules (26).
  3. Dispositif selon la revendication 1 ou 2, caractérisé par le fait que les barreaux porte-buses (24) ou les modules (26) présentent un corps de base (42) qui est obtenu de préférence par extrusion et dans lequel les buses à jet plat (52) sont insérées avec liberté d'échange.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé par le fait que sur le corps de base (42) sont posés des couvercles (34, 36), formant chambres à air (38, 40), avec une fente (54, 56) orientée vers les ouvertures de sortie des buses (53) et que les chambres à air (38, 40) sont réunies aux gaines d'air (38, 40) par l'intermédiaire de gaines de liaison (32, 64).
EP95810449A 1994-07-20 1995-07-07 Dispositif de refroidissement des tÔles et des bandes laminées à chaud Expired - Lifetime EP0695590B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2297/94 1994-07-20
CH229794 1994-07-20

Publications (2)

Publication Number Publication Date
EP0695590A1 EP0695590A1 (fr) 1996-02-07
EP0695590B1 true EP0695590B1 (fr) 1999-03-03

Family

ID=4230491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95810449A Expired - Lifetime EP0695590B1 (fr) 1994-07-20 1995-07-07 Dispositif de refroidissement des tÔles et des bandes laminées à chaud

Country Status (7)

Country Link
US (1) US5640872A (fr)
EP (1) EP0695590B1 (fr)
AT (1) ATE177031T1 (fr)
CA (1) CA2154044A1 (fr)
DE (1) DE59505170D1 (fr)
HU (1) HUT72285A (fr)
NO (1) NO311203B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016102093B3 (de) * 2016-02-05 2017-06-14 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Durchlaufkühlvorrichtung und Verfahren zum Abkühlen eines Metallbandes

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0839918B1 (fr) 1996-11-01 2002-02-27 Alcan Technology & Management AG Procédé et dispositif pour refroidir un objet
DE10207584A1 (de) * 2002-02-22 2003-09-11 Vits Maschb Gmbh I Ins Verfahren zum Abkühlen von Bändern oder Platten aus Metall und Kühlvorrichtung
AT414102B (de) * 2004-08-04 2006-09-15 Ebner Ind Ofenbau Vorrichtung zum kühlen eines blechbandes
CN100485050C (zh) * 2005-03-24 2009-05-06 南车株洲电力机车有限公司 钢结构组件火焰加热后的冷却方法
CN101293229B (zh) * 2008-01-16 2010-06-02 东北大学 一种喷气、喷雾两用式冷却装置
ITMI20111092A1 (it) * 2011-06-17 2012-12-18 Eagle Tech S R L Cappa perfezionata per il raffreddamento controllato di profili estrusi di alluminio o di altri metalli in uscita dalla linea di estrusione.
DE102015112293A1 (de) 2015-07-28 2017-02-02 Hydro Aluminium Rolled Products Gmbh Verfahren und Vorrichtung zur planheitsadaptiven Temperaturänderung von Metallbändern
FR3060021B1 (fr) * 2016-12-14 2018-11-16 Fives Stein Procede et section de refroidissement rapide d'une ligne continue de traitement de bandes metalliques
DE102017107549A1 (de) * 2017-04-07 2018-10-11 Schwartz Gmbh Temperierstation zur partiellen Wärmebehandlung eines metallischen Bauteils
DE102018109579A1 (de) * 2018-04-20 2019-10-24 Schwartz Gmbh Temperiervorrichtung zur partiellen Kühlung eines Bauteils
CN109439883A (zh) * 2018-12-12 2019-03-08 中冶南方工程技术有限公司 能改善带材板形的喷淋冷却装置
WO2023148771A1 (fr) 2022-02-03 2023-08-10 Hindalco Industries Limited Appareil pour le refroidissement de bobines de tôle laminées à chaud

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SU509315A1 (ru) * 1974-12-02 1976-04-05 Всесоюзный Научно-Исследовательскийи Проектный Институт По Очистке Тех-Нологических Газов, Сточных Вод Ииспользованию Вторичных Энергоресур-Сов Предприятий Черной Металлургии Способ охлаждени гор чего проката,преимущественно листового
US4047985A (en) * 1976-02-09 1977-09-13 Wean United, Inc. Method and apparatus for symmetrically cooling heated workpieces
US4132393A (en) * 1976-06-30 1979-01-02 Nippon Steel Corporation Apparatus for cooling hot steel plate and sheet
JPS599072U (ja) * 1982-07-07 1984-01-20 川崎製鉄株式会社 ノズルヘツダ−
GB8311167D0 (en) * 1983-04-25 1983-06-02 Jenkins W N Directed spray
DE3316992C2 (de) * 1983-05-10 1985-05-02 Mannesmann AG, 4000 Düsseldorf Vorrichtung zum Stabilisieren des Wasservorhanges in Kühlvorrichtungen für Bleche und Bänder
SU1237285A1 (ru) * 1984-12-06 1986-06-15 Украинский Ордена Трудового Красного Знамени Научно-Исследовательский Институт Металлов Устройство дл принудительного охлаждени сортового проката
EP0343103B1 (fr) 1988-05-19 1992-11-11 Alusuisse-Lonza Services Ag Procédé et dispositif pour refroidir un objet
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016102093B3 (de) * 2016-02-05 2017-06-14 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Durchlaufkühlvorrichtung und Verfahren zum Abkühlen eines Metallbandes
WO2017133867A1 (fr) 2016-02-05 2017-08-10 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Dispositif de refroidissement en continu et procédé de refroidissement d'une bande métallique

Also Published As

Publication number Publication date
NO952845D0 (no) 1995-07-18
HUT72285A (en) 1996-04-29
NO952845L (no) 1996-01-22
NO311203B1 (no) 2001-10-29
ATE177031T1 (de) 1999-03-15
CA2154044A1 (fr) 1996-01-21
DE59505170D1 (de) 1999-04-08
HU9502139D0 (en) 1995-09-28
US5640872A (en) 1997-06-24
EP0695590A1 (fr) 1996-02-07

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