EP0130721A2 - Dispositif de refroidissement - Google Patents

Dispositif de refroidissement Download PDF

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Publication number
EP0130721A2
EP0130721A2 EP84304053A EP84304053A EP0130721A2 EP 0130721 A2 EP0130721 A2 EP 0130721A2 EP 84304053 A EP84304053 A EP 84304053A EP 84304053 A EP84304053 A EP 84304053A EP 0130721 A2 EP0130721 A2 EP 0130721A2
Authority
EP
European Patent Office
Prior art keywords
coolant
plate
piston
pad
cylinder
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Withdrawn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
EP84304053A
Other languages
German (de)
English (en)
Other versions
EP0130721A3 (fr
Inventor
Christopher David Collinson
Peter George Grocock
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.)
Davy Mckee Poole Ltd
Original Assignee
Davy Mckee Poole 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
Priority claimed from GB838317184A external-priority patent/GB8317184D0/en
Priority claimed from GB848409203A external-priority patent/GB8409203D0/en
Application filed by Davy Mckee Poole Ltd filed Critical Davy Mckee Poole Ltd
Publication of EP0130721A2 publication Critical patent/EP0130721A2/fr
Publication of EP0130721A3 publication Critical patent/EP0130721A3/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Withdrawn legal-status Critical Current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
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • 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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/068—Accessories therefor for cooling the cast product during its passage through the mould surfaces
    • B22D11/0682—Accessories therefor for cooling the cast product during its passage through the mould surfaces by cooling the casting wheel
    • 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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
    • B21B37/32—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls
    • 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

  • This invention is concerned with means for applying coolant fluid and is particularly concerned with applying a coolant liquid during the rolling of metals.
  • coolant liquid In metal rolling, it is customary to apply a coolant liquid to the work rolls and/or back-up rolls to control the temperature of those rolls and thus the thermal crown of the rolls in order to maintain the correct shape or profile of the strip material being rolled.
  • the coolant is conventionally applied by spraying from nozzles either in the form of jets or water curtains. In either case a great amount of coolant, either water or kerosene, is used.
  • the volume of coolant which is jetted on to the surface of the rolls does not necessarily relate to the amount of heat extracted from the rolls and this is due to the fact that only that coolant which is in close contact with the roll is effective in extracting heat from the roll. It is found in fact that a thin layer of water passed at high velocity over part of the roll effects much higher heat transfer than the hitherto normal spray system.
  • the invention provides a coolant applicator comprising a flexible, apertured plate which is hydraulically loaded so that a surface of the plate becomes close to the surface to be cooled; the apertures allowing passage of coolant and the coolant forming a hydrostatic bearing layer between the said surface of the plate and the surface to be cooled.
  • the invention provides a hydraulically loaded pad for applying coolant to a surface, comprising a piston-cylinder assembly for connection to a supply of coolant under pressure, the piston being apertured to allow passage of the coolant, characterised by a flexible plate which is movable with the piston, has apertures in fluid connection with the cylinder via the piston, and is arranged so that, in use, coolant passing through the apertures in the plate forms a hydrostatic bearing layer between the plate and the surface.
  • a series of pads may be located across the width of the roll surface and each one, or a group, of the pads may be so controlled to effect cooling of the roll in zones as required.
  • a rolling mill roll 2 is provided with a series of coolant applying devices 4.
  • Each device comprises a hydraulic cylinder 6 formed in a beam 8 and a capping piece 10.
  • the cylinder is provided with an inlet port 12 through which coolant is fed under pressure.
  • a hollow piston 14 is slideable within a bore 16, leading from the cylinder 6 and a spring 18 surrounds the piston between the bottom of the cylinder 6 and a circlip 20 fast on the piston.
  • the lower end of the piston is formed as a ball-end 22 and mounted thereon by means of a spherical seating 24 is a support member 26.
  • the support member is formed with a central bore 28 and passageways 30 lead from the bore 28 to bores 32.
  • the bore 28 is in communication with the cylinder 6 through the hollow piston 14, as seen clearly in Figure 1.
  • a hollow piston 34 to which is secured a thin flexible plate 36 and a passageway 38 in the piston 34 connects with a cavity 40 in the plate 36.
  • the plate 36 extends across the entire width of the roll and as seen clearly in Figures 2 and 3 is connected to each of the pistons 34.
  • the coolant system is pressurised urging the pistons 14 towards the mill roll 2 until the flexible plate 36 is close to the roll.
  • coolant fluid passes into the bores 28, 32 through passages 38 into cavities 40 and passes between the plate 36 and the surface of the roll 2.
  • the piston 34 and the cavities 40 are so dimensioned that the gap between the plate 36 and roll 2 is between 0.2 and 0.5 millimetres. All the coolant is forced to flow through this gap at high velocity thus providing highly efficient cooling.
  • Each coolant applying device 4 is separately fed with coolant via an independent valve, and so the roll temperature can be controlled in zones across its width to vary the roll camber in e.g. a shape control system.
  • Supply of coolant to each device is then controlled by signals issuing from a suitable shapemeter located downstream of the mill stand.
  • the flexible plate 36 readily conforms in shape to match the surface of the roll, the change in shape being effected by the advance of the pistons 34 until the plate closely approaches the roll surface.
  • a coolant applicator as broadly described above is employed in a machine for continuously casting metal in elongate form, in order to cool the rolls of the machine and/or the cast metal.
  • the casting machine 50 comprises a pair of rolls 52, a nozzle 54, tundish 56 and feed channel 58.
  • Molten metal 60 e.g. alumi-nium
  • the metal is shown as being in a "mushy" state, i.e. a mixture of liquid and solid, and then frozen into a solid state at'64 before the full nip of the rolls is encountered.
  • the resulting cast strip S then passes over a guide roll (not shown) to a coiler (not shown), or directly to a rolling mill.
  • hydrostatic coolant applying devices 104 are provided on either side of the cast strip and each comprises a beam 108 having formed therein cylinders 106, 106A, each being fed with coolant under pressure through ports 112, 112A respectively.
  • Hollow pistons 114, 114A are slideable within bores 116, l16A and springs 118, 118A surround the pistons between the closed ends of the cylinders 106, 106A and circlips 120, 120A fast on the pistons.
  • the outermost ends of the pistons are formed as ball-ends 122, 122A and carry support members 126, 126A formed with passageways, bores and thin flexible plates 136, 136A identical with those described above, except that the support members 126A and their plates 136A are flat to conform to the shape of the strip, rather than arcuate as is the case of the members and plates 126 and 136.
  • the beams 108 and the plates 136, 136A extend across the entire width of the rolls 52 and the strip S, and the plates are connected to the pistons 114, 114A in the same way as described above.
  • the operation of the coolant applying device is the same as that described above, the dimensions being so chosen that the hydraulic loading on the pistons 114, 114A is countered by the pressure of the liquid acting between the rolls or strip and the plates 136, 136a so that the gaps between the plates and the rolls and strip are maintained constant.
  • the roll gap can be varied by the application of coolant from selected devices 104 across the width.
  • Roll contour control in this way can be effected in response to signals from sensors which detect either the roll contour itself or the contour of the cast strip.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
EP84304053A 1983-06-24 1984-06-15 Dispositif de refroidissement Withdrawn EP0130721A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB838317184A GB8317184D0 (en) 1983-06-24 1983-06-24 Coolant appliance
GB8317184 1983-06-24
GB848409203A GB8409203D0 (en) 1984-04-10 1984-04-10 Coolant appliance
GB8409203 1984-04-10

Publications (2)

Publication Number Publication Date
EP0130721A2 true EP0130721A2 (fr) 1985-01-09
EP0130721A3 EP0130721A3 (fr) 1985-06-26

Family

ID=26286469

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84304053A Withdrawn EP0130721A3 (fr) 1983-06-24 1984-06-15 Dispositif de refroidissement

Country Status (1)

Country Link
EP (1) EP0130721A3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3616070A1 (de) * 1985-05-17 1986-12-18 Hitachi, Ltd., Tokio/Tokyo Walzenkuehlvorrichtung und -verfahren
DE3607527A1 (de) * 1986-03-07 1987-09-10 Achenbach Buschhuetten Gmbh Vorrichtung zum regeln der planheit und dicke von walzband in einem mehrwalzen-bandwalzgeruest
FR2730431A1 (fr) * 1995-02-13 1996-08-14 Achenbach Buschhuetten Gmbh Laminoir a froid pour feuillard mince et pour feuillard a feuille
EP0998993A2 (fr) * 1998-11-04 2000-05-10 Sms Schloemann-Siemag Aktiengesellschaft Procédé et dispositif pour refroidir des produits de laminage chauds, notamment des bandes larges laminées à chaud
EP1027941A2 (fr) * 1999-02-12 2000-08-16 Thyssen Krupp AG Dispositif pour l'introduction de lubrifiant dans l'emprise d'un laminoir à chaud

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357224A (en) * 1965-02-26 1967-12-12 Inland Steel Co Roll cooling
DE1809328A1 (de) * 1967-11-17 1969-06-12 Kaiser Aluminium Chem Corp Vorrichtung zum Kuehlen eines Walzwerkes
JPS5524774A (en) * 1978-08-14 1980-02-22 Hitachi Ltd Roll cooling equipment
DE3049490A1 (de) * 1975-07-26 1982-07-29 Achenbach Buschhütten GmbH, 5910 Kreuztal Vorrichtung zum zonenweisen aufbringen von fliessfaehigen stoffen auf die walzenballen bei walzwerken
JPS5847502A (ja) * 1981-09-18 1983-03-19 Hitachi Ltd 圧延機のロ−ル冷却装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357224A (en) * 1965-02-26 1967-12-12 Inland Steel Co Roll cooling
DE1809328A1 (de) * 1967-11-17 1969-06-12 Kaiser Aluminium Chem Corp Vorrichtung zum Kuehlen eines Walzwerkes
DE3049490A1 (de) * 1975-07-26 1982-07-29 Achenbach Buschhütten GmbH, 5910 Kreuztal Vorrichtung zum zonenweisen aufbringen von fliessfaehigen stoffen auf die walzenballen bei walzwerken
JPS5524774A (en) * 1978-08-14 1980-02-22 Hitachi Ltd Roll cooling equipment
JPS5847502A (ja) * 1981-09-18 1983-03-19 Hitachi Ltd 圧延機のロ−ル冷却装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 4, no. 57, 26 April 1980, page (M-9)(539); & JP-A-55 024774 (HITACHI) 22-02-1980 *
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 128, 3 June 1983, page (M-220)(1273); & JP-A-58 047502 (HITACHI) 19-03-1983 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3616070A1 (de) * 1985-05-17 1986-12-18 Hitachi, Ltd., Tokio/Tokyo Walzenkuehlvorrichtung und -verfahren
US4741193A (en) * 1985-05-17 1988-05-03 Hitachi, Ltd. Method and apparatus for cooling rolling mill rolls
DE3607527A1 (de) * 1986-03-07 1987-09-10 Achenbach Buschhuetten Gmbh Vorrichtung zum regeln der planheit und dicke von walzband in einem mehrwalzen-bandwalzgeruest
FR2730431A1 (fr) * 1995-02-13 1996-08-14 Achenbach Buschhuetten Gmbh Laminoir a froid pour feuillard mince et pour feuillard a feuille
EP0998993A2 (fr) * 1998-11-04 2000-05-10 Sms Schloemann-Siemag Aktiengesellschaft Procédé et dispositif pour refroidir des produits de laminage chauds, notamment des bandes larges laminées à chaud
EP0998993A3 (fr) * 1998-11-04 2001-11-14 SMS Demag AG Procédé et dispositif pour refroidir des produits de laminage chauds, notamment des bandes larges laminées à chaud
EP1027941A2 (fr) * 1999-02-12 2000-08-16 Thyssen Krupp AG Dispositif pour l'introduction de lubrifiant dans l'emprise d'un laminoir à chaud
EP1027941A3 (fr) * 1999-02-12 2002-07-10 ThyssenKrupp Stahl AG Dispositif pour l'introduction de lubrifiant dans l'emprise d'un laminoir à chaud

Also Published As

Publication number Publication date
EP0130721A3 (fr) 1985-06-26

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Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

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Inventor name: COLLINSON, CHRISTOPHER DAVID

Inventor name: GROCOCK, PETER GEORGE

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Inventor name: COLLINSON, CHRISTOPHER DAVID

Inventor name: GROCOCK, PETER GEORGE