EP0565586B1 - Rouleau de refroidissement - Google Patents

Rouleau de refroidissement Download PDF

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Publication number
EP0565586B1
EP0565586B1 EP92902452A EP92902452A EP0565586B1 EP 0565586 B1 EP0565586 B1 EP 0565586B1 EP 92902452 A EP92902452 A EP 92902452A EP 92902452 A EP92902452 A EP 92902452A EP 0565586 B1 EP0565586 B1 EP 0565586B1
Authority
EP
European Patent Office
Prior art keywords
sleeve structure
roll
sleeve
arbor
passages
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
EP92902452A
Other languages
German (de)
English (en)
Other versions
EP0565586A1 (fr
Inventor
Robert Maidens Perry
Barry Graham Corlett
Timothy Reynolds
David Alan Preshaw
Edward Alexander Winder
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 Distington Ltd
Original Assignee
Davy Distington 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 Davy Distington Ltd filed Critical Davy Distington Ltd
Publication of EP0565586A1 publication Critical patent/EP0565586A1/fr
Application granted granted Critical
Publication of EP0565586B1 publication Critical patent/EP0565586B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F5/00—Elements specially adapted for movement
    • F28F5/02—Rotary drums or rollers
    • 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
    • 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
    • B21B27/08—Lubricating, cooling or heating rolls internally
    • 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

Definitions

  • This invention relates to a roll suitable for transferring heat between the roll and the material in contact with it.
  • a particular, but not sole, application of the invention is to a roll suitable for use in a two-roll strip caster.
  • a strip caster usually consists of a pair of rolls, arranged side-by-side with their axes of rotation horizontal, and which are spaced apart to provide a gap between them.
  • the ends of the roll barrels can be provided with dams to form a space above the roll gap into which molten metal is poured.
  • the rolls are usually liquid cooled to absorb heat from the molten metal which come into contact with them and form solidified skins which thicken as the rolls rotate. As the rolls are rotated they force the solidified skins of metal together and through the gap between the rolls to form a continuous metal strip.
  • An object of the present invention is to provide an improved roll construction which permits greater throughput together with a stable roll design, which can readily be refurbished at the end of its useful life.
  • a cooling roll to comprise a rotatable arbor with an annular sleeve structure mounted on the arbor with a shrink fit interface between the outer peripheral surface of the arbor and the inner surface of the annular sleeve structure.
  • the annular sleeve structure comprises an inner annular sleeve with an outer annular sleeve mounted on the inner annular sleeve with a shrink fit interface between them.
  • the sleeve structure is supplied with liquid coolant at the interface between the inner and outer sleeves to form a thermal barrier at the interface.
  • a cooling roll comprises
  • the internal passages in the sleeve structure conveniently extend parallel to the longitudinal axis of the arbor. These passages may be formed by boring holes through the sleeve parallel to the longitudinal axis thereof.
  • the passages connect with two annular channels, one in each of the end faces of the sleeve structure.
  • the part of the roll which contacts the molten material In order to absorb as much heat as possible from the molten material, it is necessary for the part of the roll which contacts the molten material to be of a high conductivity metal, such as steel, copper, or any of their alloys.
  • the surface of the high conductivity metal may be covered with a protective surface layer, which for example could be a stainless steel with good thermal fatigue properties or a nickel or nickel/chrome layer or a metal matrix composite layer such as tungsten carbide/cobalt alloy or chrome carbide/nickel-chrome composite.
  • a protective surface layer which for example could be a stainless steel with good thermal fatigue properties or a nickel or nickel/chrome layer or a metal matrix composite layer such as tungsten carbide/cobalt alloy or chrome carbide/nickel-chrome composite.
  • the sleeve may be removed from the arbor by externally heating to expand the sleeve whilst omitting all sleeve cooling.
  • the sleeve could then be refurbished prior to re-assembly.
  • the sleeve serves as the roll barrel and, since an external force can be exerted upon it, there has to be a shrink fit between the sleeve and the arbor to prevent it rotating around the arbor.
  • the temperature of the sleeve relative to that of the arbor is not such that will cause differential expansion between the arbor and the sleeve so as to remove the interface joint between them.
  • a thermal barrier to be located between the outer surface of the sleeve and the interface between sleeve and the arbor, a limited minimum amount of the heat applied to the outer surface of the sleeve penetrates to the interface between the sleeve and the arbor.
  • the liquid cooled sleeve efficiently removes heat from the outer surface of the sleeve thereby permitting rapid cooling of the material which is in contact with it.
  • the interference fit between the sleeve and the arbor provides a tensile stress in the sleeve which helps to negate the thermally induced compressive stresses.
  • a roll suitable for use in a metal caster comprises an elongate arbor 1 having cylindrical portions 3 adjacent each end for receiving bearing assemblies (not shown). Substantially at the centre of the arbor there is a cylindrical surface 5 on to which an annular copper-alloy sleeve 7 is shrunk. At one end of the surface 5 there is an annular rib 9 which is integral with the arbor. An annular recess 10 is formed in the adjacent end wall 11 of the sleeve and a plurality of fitted bolts (not shown) extend through the rib into the sleeve 11 to provide additional securement for the sleeve on to the arbor. The recess 10 is closed off by an annular ring 12 which is secured to the rib 9 by a plurality of bolts 13.
  • An axial bore 15 extends into the arbor 1 from the non-drive end 16.
  • a pair of annular channels 17A, 17B are formed in the surface 5 of the arbor beneath the sleeve 7.
  • a plurality of radial bores 19 extend from the channel 17A to the bore 15 and, similarly, a plurality of radial bores 21 extend from the channel 17B to the bore 15.
  • the two channels 22, 23 are connected by a multiplicity of passages 25 which extend between them in a direction substantially parallel to the longitudinal axis of the arbor 1.
  • the passages 25 are spaced apart around the entire annular sleeve.
  • channel 22 is connected to the channel 17B by a bore 27 within the sleeve and, similarly, the channel 23 is connected to the channel 17A by an internal bore 28.
  • the channels 22, 23 are closed off by cover plates 29 which may be of the same material as the sleeve 7 and fixed in position by any convenient means such as welding along lines 30.
  • a tube 34 with a central enlarged outer diameter and seal 35 is located within bore 15 and provides a barrier between two annular areas 17A and 17B one of which communicates with radial bores 19 and the other communicates with radial bores 21 for the passage of outgoing and incoming liquid coolant.
  • liquid coolant usually water
  • water is passed along the space between the tube 34 the bore 15 and into each of the bores 19 where it flows to the channel 17A at the interface between the sleeve and the arbor.
  • the water then flows along the bore 28 to the channel 23 extending around the adjacent end face of the sleeve.
  • the water flows through the multiplicity of bores 25 to the channel 22 in the end face 11 of the sleeve.
  • the water flowing through the passageways 25 cools the adjacent parts of the sleeve and, consequently, a cooled zone extends around the sleeve in the vicinity of the passageways.
  • This cooled zone serves as a barrier which reduces the flow of heat from the outer surface of the sleeve to the interface between the sleeve and the arbor, thus preventing the temperature of the sleeve in the vicinity of the interface with the arbor from rising to a level where the shrink fit interface between the sleeve and the arbor is destroyed.
  • the cooled zone serves to cool the outer surface of the sleeve thereby causing metal to solidify in contact with the surface.
  • a rotary coupling (not shown) is coupled to the end 16 of the arbor to permit coolant to circulate through the roll as the roll is rotated.
  • An annular seal 33 is located at each end of and between the sleeve and the arbor to prevent leakage of coolant from between the arbor and the sleeve. These seals can be fitted after assembly of the sleeve which will aid maintenance in the event of failure as well as negate the requirement to assemble the seals prior to the shrink fitting of the sleeve 7 on to the arbor 1.
  • the sleeve can have a hard facing layer 31 on its outer periphery.
  • This layer may comprise of chrome on nickel or stainless steel or a metal matrix composite such as tungsten carbide/cobalt alloy or chrome carbide/nickel-chrome composite.
  • the barrel ends of sleeve 7 also can have similar hard facing layer 32.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Replacement Of Web Rolls (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Coating With Molten Metal (AREA)

Claims (9)

  1. Rouleau de refroidissement comprenant :
    un mandrin rotatif (1) possédant une surface cylindrique ;
    une structure de manchon annulaire (7) montée sur le mandrin avec une interface à emmanchement à chaud entre la surface cylindrique du mandrin et la surface intérieure de la structure de manchon annulaire ;
    des moyens de canalisation (17a, 17b) formés à l'interface ;
    ledit mandrin renfermant des conduites (15 ; 19 ; 21) qui sont en communication avec l'extérieur du rouleau et lesdits moyens de canalisation ;
    ladite structure de manchon possédant des passages internes (25) pour permettre l'écoulement du liquide de refroidissement, lesdits passages étant en communication avec les moyens de canalisation ;
    lesdites conduites, lesdits moyens de canalisation et passages étant agencés de telle sorte que, en utilisation, le liquide de refroidissement s'écoule entre l'extérieur du rouleau et les passages par l'intermédiaire des moyens de canalisation et des conduites pour former une barrière thermique dans la structure de manchon ;
       caractérisé en ce que la structure de manchon comprend un élément annulaire unique (7) et en ce que ladite barrière thermique est située entre la surface périphérique extérieure de la structure de manchon et l'interface.
  2. Rouleau de refroidissement selon la revendication 1, caractérisé en ce que lesdits passages s'étendent dans une direction sensiblement parallèle à l'axe longitudinal du mandrin et rejoignent deux canaux annulaires (22), un sur chacune des faces d'extrémité de la structure de manchon.
  3. Rouleau selon la revendication 1 ou 2, dans lequel la structure de manchon est en acier.
  4. Rouleau selon la revendication 1 ou 2, dans lequel la structure de manchon est en cuivre ou en alliage de cuivre.
  5. Rouleau selon la revendication 3 ou 4, dans lequel la périphérie de la structure de manchon est protégée par un matériau thermiquement résistant qui est plus dur que la structure de manchon.
  6. Rouleau selon la revendication 5, dans lequel la structure de manchon est protégée par une couche d'acier inoxydable.
  7. Rouleau selon la revendication 5, dans lequel la structure de manchon est protégée par une couche de nickel/chrome.
  8. Rouleau selon la revendication 5, dans lequel la structure de manchon est protégée par une couche composite à matrice métallique telle qu'une couche de carbure de chrome/nickel-chrome.
  9. Rouleau selon la revendication 5, dans lequel la structure de manchon est protégée par une couche de carbure de tungstène/cobalt.
EP92902452A 1991-01-04 1992-01-03 Rouleau de refroidissement Expired - Lifetime EP0565586B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9100151 1991-01-04
GB919100151A GB9100151D0 (en) 1991-01-04 1991-01-04 Strip caster roll
PCT/GB1992/000008 WO1992011959A1 (fr) 1991-01-04 1992-01-03 Rouleau de refroidissement

Publications (2)

Publication Number Publication Date
EP0565586A1 EP0565586A1 (fr) 1993-10-20
EP0565586B1 true EP0565586B1 (fr) 1998-04-15

Family

ID=10687966

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92902452A Expired - Lifetime EP0565586B1 (fr) 1991-01-04 1992-01-03 Rouleau de refroidissement

Country Status (8)

Country Link
EP (1) EP0565586B1 (fr)
JP (1) JPH06507121A (fr)
KR (1) KR100229977B1 (fr)
AT (1) ATE165028T1 (fr)
CA (1) CA2099884A1 (fr)
DE (1) DE69225131T2 (fr)
GB (1) GB9100151D0 (fr)
WO (1) WO1992011959A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06182499A (ja) * 1992-12-22 1994-07-05 Mitsubishi Heavy Ind Ltd 連続鋳造装置の冷却ドラム及びその製造方法
EP0748502A1 (fr) * 1994-03-03 1996-12-18 Cirrus Logic, Inc. Procede et appareil geres par table s'appliquant a un traitement automatique a champ divise
JP2953304B2 (ja) * 1994-05-18 1999-09-27 関東特殊製鋼株式会社 薄板連続鋳造機用ロール外筒材
DE69425960T2 (de) * 1994-06-13 2001-03-22 Mitsubishi Jukogyo K.K., Tokio/Tokyo Kühlwalze zum kontinuierlichen Giessen und deren Herstellung
CN1051262C (zh) * 1994-06-20 2000-04-12 三菱重工业株式会社 连续铸造装置的冷却筒及其制造方法
FR2723014B1 (fr) * 1994-07-29 1996-09-20 Pechiney Rhenalu Procede et dispositif de correction de l'ovalisation de cylindres de coulee continue de bande metallique
AUPN053695A0 (en) * 1995-01-13 1995-02-09 Bhp Steel (Jla) Pty Limited Casting roll
GB2324488A (en) * 1997-04-24 1998-10-28 Kvaerner Tech & Res Ltd A casting roll with an interference fit between its inner core and outer shell
AUPO832897A0 (en) * 1997-07-30 1997-08-28 Bhp Steel (Jla) Pty Limited Twin roll casting
CH690903A5 (de) * 1999-08-20 2001-02-28 Main Man Inspiration Ag Bandgiessmaschine mit zwei Giessrollen.
FR2799399B1 (fr) * 1999-10-06 2002-02-08 Pechiney Rhenalu Cylindre de coulee continue de bande metallique comprenant un circuit de refroidissement
KR100648232B1 (ko) * 2005-05-23 2006-11-23 주식회사 동방플랜텍 제철설비용 가이드롤러의 냉각구조
JP4686288B2 (ja) * 2005-07-25 2011-05-25 キャストリップ・リミテッド・ライアビリティ・カンパニー 鋳造用ロール
JP2007136485A (ja) * 2005-11-16 2007-06-07 Ishikawajima Harima Heavy Ind Co Ltd 鋳造用ロール
KR100784150B1 (ko) 2006-12-18 2007-12-10 주식회사 포스코 괴성체 제조 장치 및 이를 구비한 용철 제조 장치
CN113430754A (zh) * 2021-07-19 2021-09-24 福建福田纺织印染科技有限公司 一种改善针织布折痕的生产工艺
CN116197240B (zh) * 2023-02-24 2023-08-15 浙江豪环新材料有限公司 一种高性能钢材的加工工艺及轧机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4019846A (en) * 1975-06-05 1977-04-26 Wean United, Inc. Rolls in a briquetting machine or like machines
JPS56151149A (en) * 1980-04-23 1981-11-24 Kubota Ltd Assembling type roll for continuous casting of slab
AU560682B2 (en) * 1982-07-13 1987-04-16 Allied Corporation Two piece chilled casting wheel
JPH07121440B2 (ja) * 1987-11-19 1995-12-25 株式会社日立製作所 双ロール式連続鋳造装置
FR2654372B1 (fr) * 1989-11-16 1992-01-17 Siderurgie Fse Inst Rech Cylindre pour un dispositif de coulee continue sur un ou entre deux cylindres.

Also Published As

Publication number Publication date
CA2099884A1 (fr) 1992-07-05
DE69225131T2 (de) 1998-08-06
EP0565586A1 (fr) 1993-10-20
KR100229977B1 (ko) 1999-11-15
GB9100151D0 (en) 1991-02-20
DE69225131D1 (de) 1998-05-20
ATE165028T1 (de) 1998-05-15
WO1992011959A1 (fr) 1992-07-23
JPH06507121A (ja) 1994-08-11
KR930703096A (ko) 1993-11-29

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