EP1506828A1 - Cylindre de coulée - Google Patents

Cylindre de coulée Download PDF

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Publication number
EP1506828A1
EP1506828A1 EP04016402A EP04016402A EP1506828A1 EP 1506828 A1 EP1506828 A1 EP 1506828A1 EP 04016402 A EP04016402 A EP 04016402A EP 04016402 A EP04016402 A EP 04016402A EP 1506828 A1 EP1506828 A1 EP 1506828A1
Authority
EP
European Patent Office
Prior art keywords
core
casting
jacket
casting roll
roller according
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Withdrawn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
EP04016402A
Other languages
German (de)
English (en)
Inventor
Hans-Günter Dr. Wobker
Dietmar Kolbeck
Gerhard HUGENSCHÜTT
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.)
KME Special Products GmbH and Co KG
Original Assignee
KM Europa Metal AG
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 KM Europa Metal AG filed Critical KM Europa Metal AG
Publication of EP1506828A1 publication Critical patent/EP1506828A1/fr
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a casting roll for a continuous casting plant for the continuous casting of metal strips according to the features in the preamble of patent claim 1.
  • Casting involves pouring liquid steel or other non-ferrous metals between two horizontally or vertically stacked, counter-rotating, laterally sealed casting rolls. During this process, the strip solidifies between the two casting rolls and continues to run continuously in the process.
  • Casting rollers of the common type have a cylindrical core, usually made of Steel and a jacket connected to it.
  • material for the coat come for Steel casting usually uses high thermal conductivity materials such as copper or copper alloys used.
  • non-ferrous metals Usually steel jackets applied.
  • the shrinking process creates tensile stresses in the jacket.
  • In the operational Use during the casting process may depend on the rigidity of the Construction and the forces acting to a deflection or rebound of the Casting roller come.
  • Load voltages that are related to the acting stresses from the shrinking process overlap. These stresses can be under load at the acting Alternating stress lead to cracking.
  • the invention is based on the prior art, the object of a, for the operational use improved casting roll to create, in the stress is reduced during operation.
  • the solution of this problem consists according to the invention in a casting roll according to the features of claim 1.
  • a relaxation zone is provided between the core and the shell of the casting roll, through which a local reduction of the shrinkage stresses takes place. This results in a reduction in the reference voltages in the areas under heavy load. In this way, the formation of fatigue and the formation of cracks due to stress is prevented, resulting in an increase in the life of a casting roll. In addition, this improves the running properties of the casting roll.
  • the relaxation zone is formed by a profiling of the outer diameter of the core and / or the inner diameter of the shell.
  • the relaxation zone is formed by a partial reduction of the outer diameter of the core
  • claim 3 provides that the relaxation zone is formed by a partial enlargement of the inner diameter of the shell.
  • a particularly advantageous embodiment of the basic concept of the invention is according to the features of claim 4 in that the relaxation zone is located in the central longitudinal region of the core and / or the jacket. In this case, the invention makes the knowledge that the maximum stress resulting from the superposition of the shrinkage stresses and the load stresses is established in the middle region of the casting roll.
  • FIGS 1 and 2 each show a casting roll 1 and 2 for a casting mill for continuous casting of metal strips.
  • Each casting roll 1, 2 has a cylindrical core 3, 4 made of steel and a shrunk thereon 5, 6 made of a copper alloy.
  • the sheath 5 and 6 and the core 3 and 4 are connected by shrinking techniques. By the shrinking process arise in the jacket 5, 6 tensile stresses. These interfere with the operational load voltages to the so-called reference voltage. This maximum stress arises in the central region B of a casting roll 1 and 2, respectively. In these regions B, crack formation under load occurs in the acting alternating stress.
  • a relaxation zone E is provided.
  • This relaxation zone E is introduced specifically in the area B, in which in the operational use of the casting roll 1, 2 can be expected under load with the highest stress.
  • the expansion zone E is provided in the middle length region of the shell 5, 6.
  • the expansion zone E is formed by a region-wise enlargement of the inside diameter D I of the shell 5.
  • the relaxation zone E here has a radial extent s of 0.6 to 2.0 mm, preferably 1 mm.
  • the expansion zone E is formed by a partial reduction of the outer diameter D A of the core 4 (see also FIG.
  • the outer diameter D A is partially reduced radially in the middle length region of the core 4.
  • the relaxation zone E has an extension s between 0.6 and 2.0 mm, preferably 1 mm.
  • the relaxation zone E depending on the embodiment of a casting roll 1, 2 and use case of different lengths.
  • the length L E of the relaxation zone E between 0.2 to 0.8 x the total length L of the core 3, 4 and / or the jacket 5, 6 are.
  • the relaxation zone E is in the embodiments shown here for Clarification of the invention shown oversized. In practice, according to the Do not shrink any gap between sheath 5, 6 and core 3, 4. Through the targeted in the Areas of highest stress relaxation zone E becomes a partially achieved reduction of shrinkage stresses. These lead into the high burdened areas to a reduction of the maximum load.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP04016402A 2003-08-13 2004-07-13 Cylindre de coulée Withdrawn EP1506828A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10337174A DE10337174A1 (de) 2003-08-13 2003-08-13 Gießwalze
DE10337174 2003-08-13

Publications (1)

Publication Number Publication Date
EP1506828A1 true EP1506828A1 (fr) 2005-02-16

Family

ID=33560309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04016402A Withdrawn EP1506828A1 (fr) 2003-08-13 2004-07-13 Cylindre de coulée

Country Status (4)

Country Link
US (1) US7178578B2 (fr)
EP (1) EP1506828A1 (fr)
JP (1) JP2005059095A (fr)
DE (1) DE10337174A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4773468A (en) * 1986-05-14 1988-09-27 Larex Ag Casting roll
EP0429385A1 (fr) * 1989-11-22 1991-05-29 USINOR SACILOR Société Anonyme Cylindre pour dispositif de coulée continue de bandes minces de métal
WO2003057390A2 (fr) * 2002-01-11 2003-07-17 Voest-Alpine Industrieanlagenbau Gmbh & Co Cylindre de coulee et procede de production d'un cylindre de coulee

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4722212A (en) * 1985-11-06 1988-02-02 United Engineering Rolling Mills, Inc. Self-compensating roll
US4813258A (en) * 1987-01-14 1989-03-21 United Engineering, Inc. Assembled flexible edge roll
US5093974A (en) * 1990-04-12 1992-03-10 United Engineering Inc. Bendable sleeved roll

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4773468A (en) * 1986-05-14 1988-09-27 Larex Ag Casting roll
EP0429385A1 (fr) * 1989-11-22 1991-05-29 USINOR SACILOR Société Anonyme Cylindre pour dispositif de coulée continue de bandes minces de métal
WO2003057390A2 (fr) * 2002-01-11 2003-07-17 Voest-Alpine Industrieanlagenbau Gmbh & Co Cylindre de coulee et procede de production d'un cylindre de coulee

Also Published As

Publication number Publication date
DE10337174A1 (de) 2005-03-10
US20050034839A1 (en) 2005-02-17
JP2005059095A (ja) 2005-03-10
US7178578B2 (en) 2007-02-20

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