EP1122004A1 - Stranggiesswalze - Google Patents

Stranggiesswalze Download PDF

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Publication number
EP1122004A1
EP1122004A1 EP01101191A EP01101191A EP1122004A1 EP 1122004 A1 EP1122004 A1 EP 1122004A1 EP 01101191 A EP01101191 A EP 01101191A EP 01101191 A EP01101191 A EP 01101191A EP 1122004 A1 EP1122004 A1 EP 1122004A1
Authority
EP
European Patent Office
Prior art keywords
roll
central portion
jacket
continuous casting
cooling
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
EP01101191A
Other languages
English (en)
French (fr)
Other versions
EP1122004B1 (de
Inventor
Valerio Presezzi
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.)
Officine Meccaniche Bruno Presezzi Srl
Original Assignee
Officine Meccaniche Bruno Presezzi Srl
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 Officine Meccaniche Bruno Presezzi Srl filed Critical Officine Meccaniche Bruno Presezzi Srl
Publication of EP1122004A1 publication Critical patent/EP1122004A1/de
Application granted granted Critical
Publication of EP1122004B1 publication Critical patent/EP1122004B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B22D11/0648—Casting surfaces
    • B22D11/0651—Casting wheels
    • 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

  • the present invention relates to a continuous casting roll particularly for producing aluminum or aluminum alloy strips.
  • the resulting metal strip is then subjected to cold rolling in order to gradually bring the strip to the required thickness.
  • Hot-rolling rolls are generally constituted by a body which has a substantially cylindrical central portion and two end portions which are also substantially cylindrical but have a smaller diameter than the central portion, protrude coaxially from the two ends of said central portion and are used to support the roll so that it can rotate about its own axis and to connect it to actuation means which turn the roll about its own axis.
  • the central portion is covered with a jacket which is constituted by a hollow cylinder which is open at its ends and is the part of the roll that makes direct contact with the molten metal.
  • the roll is cooled by circulating a cooling fluid, generally constituted by water, in cooling ducts formed in the body of the roll.
  • a cooling fluid generally constituted by water
  • the cooling ducts are constituted by circumferential grooves which are formed in the cylindrical surface of the central portion of the body of the roll.
  • the circumferential grooves generally have, in a cross-section taken along a radial plane, a semicircular shape and are closed, on their side directed away from the axis of the roll, by the internal surface of the jacket, which mates with the cylindrical surface of the central portion of the body of the roll.
  • the jacket is cooled mostly by direct contact of the jacket with the cooling fluid and to a much smaller extent by virtue of the contact of the jacket with the cylindrical surface of the central portion of the body of the roll.
  • the cooling of the roll is in fact often insufficient to adequately dissipate the heat transmitted from the molten metal to the roll.
  • the jacket can wear rapidly, forcing to stop the rolling plant in order to replace it.
  • the gradual heating of the roll can produce deformations of the roll which cause irregularities in the thickness of the rolled metal strip. Accordingly, the thickness of the rolled strip cannot be reduced below a certain limit, as instead would be desirable in order to reduce the cold-rolling cycles and thus speed up production.
  • Another problem is constituted by the times and costs required to restore, during the replacement of the jacket, the profile of the central portion of the body of the roll.
  • the edge regions of the circumferential grooves adjacent to the cylindrical surface of said portion are often broken or seized and require machining in order to restore the correct profile of the portion of the body of the roll.
  • the aim of the present invention is to solve the above problems, by providing a continuous casting roll, particularly for producing aluminum or aluminum alloy strips, which can be cooled more effectively than conventional continuous casting rolls.
  • an object of the invention is to provide a continuous casting roll which allows to achieve higher rolling speeds and thus allows to increase the productivity of rolling lines.
  • Another object of the invention is to provide a roll which achieves a longer life for the jacket and thus reduces maintenance for replacing it.
  • Another object of the invention is to provide a roll which, by virtue of better cooling, is less deformable and thus allows to obtain a rolled strip which has a more uniform thickness.
  • Another object of the invention is to provide a roll which allows simpler and faster jacket replacement operations.
  • a continuous casting roll particularly for producing aluminum or aluminum alloy strips, which comprises a roll body which has a substantially cylindrical central portion and a jacket for cladding said central portion of the roll body which is designed to be contacted by the molten material, means for cooling said jacket being provided, characterized in that said cooling means comprise cooling ducts which are formed at least partially in said jacket and can be supplied with a cooling fluid.
  • the continuous casting roll according to the invention comprises a body 2 of the roll which has a central portion 3 which covers most of the axial extension of the roll 1 and is substantially cylindrical.
  • Two end portions 4a and 4b protrude from the two ends of the central portion 3 and are coaxial to the central portion 3; by virtue of said end portions, the roll 1 is supported, in a per se known manner, so that it can rotate about its own axis 5, which constitutes the common axis of the portions 3, 4a and 4b; by virtue of said end portions, furthermore, the roll 1 is connected to actuation means which turn it about the axis 5.
  • the roll 1 also comprises a jacket 6 which clads the central portion 3 and is provided with means for cooling the jacket 6.
  • the cooling means comprise cooling ducts which are formed at least partially in the jacket 6 and can be supplied with a cooling fluid which can be simply constituted by water, optionally corrected with known types of additive.
  • the jacket 6 is constituted by a hollow cylinder which is open at its ends and is fitted coaxially around the central portion 3 of the body 2 of the roll.
  • the cooling ducts comprise a plurality of circumferential grooves 7 which are formed on the internal surface of the jacket and run around the axis 5 of said jacket.
  • the circumferential grooves 7 are closed, on their side directed toward the axis 5, by the cylindrical surface of the central portion 3 of the body 2 of the roll 1 which mates with the internal surface of the jacket 6.
  • the circumferential grooves 7 preferably have, in a radial cross-section, a substantially rectangular shape, in which one side is closed by the cylindrical surface of the central portion 3 of the body 2 of the roll and the edges that are not adjacent to said side are radiused.
  • the circumferential grooves 7 can have, in radial cross-section, a substantially semicircular shape.
  • the central portion 3 of the body 2 of the roll has, on its cylindrical surface mated with the internal surface of the jacket 6, axial grooves 8 for connecting the cooling ducts constituted by the circumferential grooves 7.
  • the supply duct 9 and the discharge duct 10 run parallel to the axis 5 and are connected to the grooves 7 through connecting ducts 11 which are formed radially in the central portion 3 of the body 2 of the roll and have an inlet or an outlet in the axial grooves 8.
  • the supply ducts 9 and the discharge ducts 10 are provided with an inlet or an outlet at one of the axial ends of the body 2 of the roll 1 and are connected, by virtue of said inlets or outlets, to a line for circulating the cooling fluid, in a per se known manner.
  • Sealing means are conveniently interposed between the jacket 6 and the central portion 3 of the body 2 of the roll.
  • said sealing means comprise, for each axial end of the central portion 3 of the body 2 of the roll 1, as shown in particular in Figure 4, an annular gasket 12 which is partially accommodated in a circumferential seat 13 formed coaxially in the cylindrical surface of the central portion 3 of the body 2 of the roll proximate to its axial ends.
  • the jacket 6 is locked axially on the central portion 3 of the body of the roll 2 by two disk-like bodies 14a and 14b which are fixed, by virtue of screws 15, to the two opposite ends of the central portion 3 of the body 2 of the roll 1.
  • the circumferential seat 13 is delimited axially, toward the outside of the central portion 3, by an annular protrusion 16 of the corresponding disk-like body 14a or 14b.
  • An additional annular gasket 17 can be interposed between the gasket 12 and the annular protrusion 16.
  • the cooling ducts constituted by the circumferential grooves 7 are formed in the jacket 6 instead of in the central portion of the body of the roll as in conventional rolls, the surface of the jacket that is in direct contact with the cooling fluid is greater for an equal passage section for the cooling fluid.
  • the cooling of the continuous casting roll according to the invention is better than the cooling that can be obtained in conventional types of continuous casting roll.
  • the jacket 6 of the continuous casting roll according to the invention can be cooled to a greater extent and more uniformly than conventional types of continuous casting roll. This allows to achieve higher rolling speeds and reduce the wear of the jacket.
  • the central portion 3 of the body 2 of the roll 1 clad by the jacket 6 has a substantially continuous cylindrical profile which, during the replacement of the jacket 6, does not have to be subjected to mechanical operations in order to repair breakages or seizures, thus allowing to replace the jacket 6 in a shorter time.
  • the better cooling achieved in the continuous casting roll according to the invention considerably limits the deformation of the roll during its operation and therefore provides a rolled product which has a more uniform thickness. This allows to also reduce the thickness of the rolled product and therefore to consequently reduce the subsequent cold-rolling cycles required to bring the rolled product to the intended thickness. All these advantages lead to an increase in the productivity of the entire rolling line and therefore ultimately lead to a reduction in the production costs of the rolled product.
  • the materials employed may be any according to requirements and to the state of the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Materials For Medical Uses (AREA)
  • Undergarments, Swaddling Clothes, Handkerchiefs Or Underwear Materials (AREA)
  • Prostheses (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP01101191A 2000-02-01 2001-01-24 Stranggiesswalze Expired - Lifetime EP1122004B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI000148 2000-02-01
IT2000MI000148A IT1316320B1 (it) 2000-02-01 2000-02-01 Rullo di colata continua, particolarmente per la produzione di nastroin alluminio o in lega di alluminio.

Publications (2)

Publication Number Publication Date
EP1122004A1 true EP1122004A1 (de) 2001-08-08
EP1122004B1 EP1122004B1 (de) 2005-12-14

Family

ID=11443851

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01101191A Expired - Lifetime EP1122004B1 (de) 2000-02-01 2001-01-24 Stranggiesswalze

Country Status (5)

Country Link
EP (1) EP1122004B1 (de)
AT (1) ATE312674T1 (de)
DE (1) DE60115734T2 (de)
ES (1) ES2250232T3 (de)
IT (1) IT1316320B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104785740A (zh) * 2014-01-17 2015-07-22 唐山市润捷机械设备制造有限公司 连铸机螺旋水冷输送辊
CN110449558A (zh) * 2019-08-29 2019-11-15 中冶赛迪工程技术股份有限公司 一种用于高速铸轧机的铸轧辊

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5942160A (ja) * 1982-09-02 1984-03-08 Nippon Steel Corp 非晶質合金薄帯製造用冷却ロ−ル
JPS609561A (ja) * 1983-06-29 1985-01-18 Sumitomo Heavy Ind Ltd 連続鋳造機
US4671340A (en) * 1985-09-17 1987-06-09 Institut De Recherches De La Siderurgie Francaise Roller for continuous casting between rollers, with circulation of cooling fluid
EP0429385A1 (de) * 1989-11-22 1991-05-29 USINOR SACILOR Société Anonyme Zylinder für Bandstranggiessanlage
EP0490800A1 (de) * 1990-12-07 1992-06-17 Usinor Sacilor Zylinder für Einzel- oder Doppelrollenstranggiessen.
US5887644A (en) * 1996-02-16 1999-03-30 Ishikawa Jima-Harima Heavy Industries Company Limited Roll cooling structure for twin roll continuous caster
WO2001017712A1 (de) * 1999-09-06 2001-03-15 Voest-Alpine Industrieanlagenbau Gmbh Giesswalze

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5942160A (ja) * 1982-09-02 1984-03-08 Nippon Steel Corp 非晶質合金薄帯製造用冷却ロ−ル
JPS609561A (ja) * 1983-06-29 1985-01-18 Sumitomo Heavy Ind Ltd 連続鋳造機
US4671340A (en) * 1985-09-17 1987-06-09 Institut De Recherches De La Siderurgie Francaise Roller for continuous casting between rollers, with circulation of cooling fluid
EP0429385A1 (de) * 1989-11-22 1991-05-29 USINOR SACILOR Société Anonyme Zylinder für Bandstranggiessanlage
EP0490800A1 (de) * 1990-12-07 1992-06-17 Usinor Sacilor Zylinder für Einzel- oder Doppelrollenstranggiessen.
US5887644A (en) * 1996-02-16 1999-03-30 Ishikawa Jima-Harima Heavy Industries Company Limited Roll cooling structure for twin roll continuous caster
WO2001017712A1 (de) * 1999-09-06 2001-03-15 Voest-Alpine Industrieanlagenbau Gmbh Giesswalze

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 146 (M - 307) 7 July 1984 (1984-07-07) *
PATENT ABSTRACTS OF JAPAN vol. 009, no. 124 (M - 383) 29 May 1985 (1985-05-29) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104785740A (zh) * 2014-01-17 2015-07-22 唐山市润捷机械设备制造有限公司 连铸机螺旋水冷输送辊
CN110449558A (zh) * 2019-08-29 2019-11-15 中冶赛迪工程技术股份有限公司 一种用于高速铸轧机的铸轧辊
CN110449558B (zh) * 2019-08-29 2024-05-14 中冶赛迪工程技术股份有限公司 一种用于高速铸轧机的铸轧辊

Also Published As

Publication number Publication date
ATE312674T1 (de) 2005-12-15
ITMI20000148A0 (it) 2000-02-01
DE60115734T2 (de) 2006-08-10
IT1316320B1 (it) 2003-04-10
EP1122004B1 (de) 2005-12-14
ES2250232T3 (es) 2006-04-16
ITMI20000148A1 (it) 2001-08-01
DE60115734D1 (de) 2006-01-19

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