US20070289716A1 - Device for Accommodating a Continuous Casting Mold on an Elevating Table - Google Patents

Device for Accommodating a Continuous Casting Mold on an Elevating Table Download PDF

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Publication number
US20070289716A1
US20070289716A1 US11/587,221 US58722105A US2007289716A1 US 20070289716 A1 US20070289716 A1 US 20070289716A1 US 58722105 A US58722105 A US 58722105A US 2007289716 A1 US2007289716 A1 US 2007289716A1
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United States
Prior art keywords
elevating table
frame
strand
cast
continuous casting
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Abandoned
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US11/587,221
Inventor
Axel Weyer
Juergen Mueller
Axel Stavenow
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SMS Siemag AG
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Individual
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Assigned to SMS DEMAG AG reassignment SMS DEMAG AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MUELLER, JUERGEN, WEYER, AXEL
Publication of US20070289716A1 publication Critical patent/US20070289716A1/en
Abandoned legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/053Means for oscillating the moulds

Definitions

  • the present invention relates to a device for accommodating a continuous casting mold on an elevating table for casting molten metals, in particular molten steel materials, which is set in an oscillatory motion with several hydraulic oscillation drives during drawing out of a partially solidified cast strand, wherein frequency and amplitude are adapted to a respective cross-section, e.g., of slab, thin strand, bloom, beam blank or billet strand cross-section, and to a respective cast material and/or cast parameter (cast speed), and guide members are connected with stationary articulated means for an optimal oscillation curve of the elevating table.
  • the above-described device is disclosed in EP 1 029 616 A1.
  • This device serves in particular for casting thin strands from steel. It includes an oscillating continuous casting mold positioned on two elevating tables arranged on opposite sides of the cast strand.
  • the oscillation drive is formed by piston-cylinder units in form of servocylinders supported on a base frame. Each elevating table side is hingedly connected with a head of a piston-cylinder unit. The foots of the piston cylinder units are hingedly connected, respectively, with the base frame.
  • Each elevating table side is guided with respect to the base frame with a hingedly connected guide bar.
  • the axes of the hinges and of hinges at the heads of the piston-cylinder units and the axes of the hinges of the guide bars extend parallel to each other.
  • Periodic oscillation movements of the continuous casting mold cause friction between the continuous casting mold and the cast strand or its strand shell and which can be prevented with lubricating anti-seizure means.
  • an oscillating excitation of the entire cast strand and/or the bath level in the continuous casting mold take place, in particular at sinusoidal oscillations, which is undesirable.
  • Such oscillation can be damped with oscillation curves that deviate from sinusoidal curves.
  • Such deviating curves advantageously influence also oscillation marks, their depth and shape on the strand surface and improve the surface quality.
  • a prerequisite for generation and transmission of suitable oscillation curves is the construction and the system of the device itself that accommodates the continuous casting mold.
  • the generation of oscillation (e.g., described in EP 0 121 622 B1) is effected with a function generator which produces oscillations with a preselected oscillation amplitude signal at a frequency that is greater than the natural frequency of the device.
  • An object of the invention is to provide a combination of an elevating table and a continuous casting mold and which would be capable to provide for transmission of functionally correct oscillations with a high precision.
  • the stated object is achieved according to the invention by forming the elevating table as a one-piece frame-shaped table with an inner space for passing through the cast strand and correspondingly dimensioned, and in that the oscillation drives are arranged in corners inside a frame surface and are controlled in a fully synchronized manner with a lateral pairwise offset with regard to an arched, or together, for a perpendicular straight, draw-out motion.
  • the oscillation drives are arranged in corners inside a frame surface and are controlled in a fully synchronized manner with a lateral pairwise offset with regard to an arched, or together, for a perpendicular straight, draw-out motion.
  • the continuous casting mold with its cooling units is directly placed on the frame-shaped elevating table.
  • the frame-shaped elevating table provides therefore a satisfactory bearing surface.
  • the frame-shaped elevating table is provided with cooling channels connected with a cooling medium network.
  • the advantage consists in a narrow inner space of rings about the cast strand cross-section with a small spacing. At a smaller cooling capacity, the spacing from a hot cast strand is increased. In addition, the cooling capacity is increased to a certain extent as a result of the otherwise available, spray cooling.
  • a further improvement consists in that the stationary articulation means of the guide members consists of leaf springs in form of an assembly hingedly supported on the elevating table and a stationary base frame.
  • the single drawing FIGURE shows a perspective view of a combination continuous casting mold/elevating table which are supported on a base frame.
  • a device for accommodating a continuous casting mold 1 with a water box 1 a and a narrow side 1 b includes, according to the state of the art, two separate elevating tables 2 and 2 for casting molten metals, in particular molten steel materials.
  • the elevating tables 2 , 2 are set in an oscillatory motion by several oscillation drives 3 upon drawing out of a partially solidified cast strand 4 .
  • the frequency and the amplitude are adapted to a strand cross-section 5 of, e.g., slab strand, thin strand, bloom strand, beam blank strand or billet strand, cross-section 5 and in accordance with a respective cast material.
  • guide members 6 which connect the elevating tables 2 , 2 with a stationary articulation joint 7 for an optimal oscillation curve.
  • the present invention modifies the known system by formation of one-piece, frame-shaped elevating table 8 . Therefore, the elevating table 8 has an inner space 8 a which is kept open for passing of the cast strand 4 and is accordingly dimensioned.
  • the oscillation drives 3 are formed as piston-cylinder units 3 a , with those formed as servo-cylinder units 3 b being arranged in corners 8 b inside the frame surface 8 c , and are controlled with a pairwise lateral offset with regard to an arched, or together, for a perpendicular, straight, draw-out movement 9 .
  • the synchronization of two or more hydraulic drives was proved to be practical with such a construction and is, therefore, possible.
  • the deviation of several hundredth mm between both elevating table sides can be achieved.
  • the so-formed elevating table 8 lifts the continuous casting mold 1 with all its cooling units 10 and, therefore, can be easily formed as a frame-shaped elevating table 8 .
  • the frame-shaped elevating table 8 is provided with cooling channels connected with a cooling medium network.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

A device for accommodating a continuous casting mold (1) on an elevating table for casting molten metals, in particular molten steel materials, which is set in an oscillatory motion with several hydraulic oscillation drives, is modified from having two separate elevating table sides so that the elevating table (8) is formed as one-piece frame-shaped table with an inner space (8 a) for passing through the cast strand (4) and correspondingly dimensioned, and in that the oscillation drives (3) are arranged in corners (8 b) inside a frame surface (8 c) and are controlled in a fully synchronized manner with a lateral pairwise offset with regard to an arched, or together, for a perpendicular straight, draw-out movement.

Description

  • The present invention relates to a device for accommodating a continuous casting mold on an elevating table for casting molten metals, in particular molten steel materials, which is set in an oscillatory motion with several hydraulic oscillation drives during drawing out of a partially solidified cast strand, wherein frequency and amplitude are adapted to a respective cross-section, e.g., of slab, thin strand, bloom, beam blank or billet strand cross-section, and to a respective cast material and/or cast parameter (cast speed), and guide members are connected with stationary articulated means for an optimal oscillation curve of the elevating table.
  • The above-described device is disclosed in EP 1 029 616 A1. This device serves in particular for casting thin strands from steel. It includes an oscillating continuous casting mold positioned on two elevating tables arranged on opposite sides of the cast strand. The oscillation drive is formed by piston-cylinder units in form of servocylinders supported on a base frame. Each elevating table side is hingedly connected with a head of a piston-cylinder unit. The foots of the piston cylinder units are hingedly connected, respectively, with the base frame. Each elevating table side is guided with respect to the base frame with a hingedly connected guide bar. The axes of the hinges and of hinges at the heads of the piston-cylinder units and the axes of the hinges of the guide bars extend parallel to each other.
  • Periodic oscillation movements of the continuous casting mold cause friction between the continuous casting mold and the cast strand or its strand shell and which can be prevented with lubricating anti-seizure means. At different speeds between the continuous casting mold and the cast speed, an oscillating excitation of the entire cast strand and/or the bath level in the continuous casting mold take place, in particular at sinusoidal oscillations, which is undesirable. Such oscillation can be damped with oscillation curves that deviate from sinusoidal curves. Such deviating curves advantageously influence also oscillation marks, their depth and shape on the strand surface and improve the surface quality.
  • A prerequisite for generation and transmission of suitable oscillation curves is the construction and the system of the device itself that accommodates the continuous casting mold. The generation of oscillation (e.g., described in EP 0 121 622 B1) is effected with a function generator which produces oscillations with a preselected oscillation amplitude signal at a frequency that is greater than the natural frequency of the device.
  • An object of the invention is to provide a combination of an elevating table and a continuous casting mold and which would be capable to provide for transmission of functionally correct oscillations with a high precision.
  • The stated object is achieved according to the invention by forming the elevating table as a one-piece frame-shaped table with an inner space for passing through the cast strand and correspondingly dimensioned, and in that the oscillation drives are arranged in corners inside a frame surface and are controlled in a fully synchronized manner with a lateral pairwise offset with regard to an arched, or together, for a perpendicular straight, draw-out motion. Thereby an increased stiffness of the device is achieved, so that the influence of the device on the oscillation behavior of the continuous casting mold has changed in such a way that critical frequencies are not reached any more, and the predetermined frequencies and amplitudes are reliably and precisely implemented. The practical experience has shown that a complete synchronization of two or more hydraulic drives can be achieved. An overall low height of the device, e.g., contributes thereto. In addition, another advantage is a possibility of subsequent modernization of the existing devices into new ones.
  • According to one of the embodiments, the continuous casting mold with its cooling units is directly placed on the frame-shaped elevating table. The frame-shaped elevating table provides therefore a satisfactory bearing surface.
  • According to a further development, the frame-shaped elevating table is provided with cooling channels connected with a cooling medium network. The advantage consists in a narrow inner space of rings about the cast strand cross-section with a small spacing. At a smaller cooling capacity, the spacing from a hot cast strand is increased. In addition, the cooling capacity is increased to a certain extent as a result of the otherwise available, spray cooling.
  • A further improvement consists in that the stationary articulation means of the guide members consists of leaf springs in form of an assembly hingedly supported on the elevating table and a stationary base frame.
  • In the drawing, an embodiment, which will be described in detail below, is shown.
  • The single drawing FIGURE shows a perspective view of a combination continuous casting mold/elevating table which are supported on a base frame.
  • A device for accommodating a continuous casting mold 1 with a water box 1 a and a narrow side 1 b includes, according to the state of the art, two separate elevating tables 2 and 2 for casting molten metals, in particular molten steel materials. The elevating tables 2, 2 are set in an oscillatory motion by several oscillation drives 3 upon drawing out of a partially solidified cast strand 4. The frequency and the amplitude are adapted to a strand cross-section 5 of, e.g., slab strand, thin strand, bloom strand, beam blank strand or billet strand, cross-section 5 and in accordance with a respective cast material. In addition, there are provided guide members 6 which connect the elevating tables 2, 2 with a stationary articulation joint 7 for an optimal oscillation curve.
  • The present invention modifies the known system by formation of one-piece, frame-shaped elevating table 8. Therefore, the elevating table 8 has an inner space 8 a which is kept open for passing of the cast strand 4 and is accordingly dimensioned. The oscillation drives 3 are formed as piston-cylinder units 3 a, with those formed as servo-cylinder units 3 b being arranged in corners 8 b inside the frame surface 8 c, and are controlled with a pairwise lateral offset with regard to an arched, or together, for a perpendicular, straight, draw-out movement 9. The synchronization of two or more hydraulic drives was proved to be practical with such a construction and is, therefore, possible. The deviation of several hundredth mm between both elevating table sides can be achieved.
  • The so-formed elevating table 8 lifts the continuous casting mold 1 with all its cooling units 10 and, therefore, can be easily formed as a frame-shaped elevating table 8.
  • For protection from the radiating heat of the cast strand 4, the frame-shaped elevating table 8 is provided with cooling channels connected with a cooling medium network.
  • From many possible embodiments of guide means of the elevating table 8, an advantageous construction was selected according to which the articulated join of the guide members 6 is formed of leaf springs 7 a in form of spring assemblies 7 b hingedly supported on the elevating table 8 and a stationary base frame 11.
  • LIST OF REFERENCE NUMERALS
    • 1. Continuous Casting Mold
    • 1 a. Water box
    • 1 b. Narrow side
    • (2, 2. Known elevating tables)
    • 3. Oscillation drive
    • 3 a. Piston-cylinder unit
    • 3 b. Servo-cylinder unit
    • 4. (partially solidified) cast strand
    • 5. Strand cross-section
    • 6. Guide member
    • 7. Stationary articulated joint
    • 7 a. Leaf spring
    • 7 b. Assembly
    • 8. Frame-shaped one-piece elevating table
    • 8 a. Inner space
    • 8 b. Corners
    • 8 c. Frame surface
    • 9. Draw-out movement
    • 10. Cooling units
    • 11. Base frame

Claims (4)

1. A device for accommodating a continuous casting mold (1) on an elevating table (2) for casting molten metals, in particular molten steel materials, which is set in an oscillatory motion with several hydraulic oscillation drives (3) during drawing out of a partially solidified cast strand (4), wherein frequency and amplitude are adapted to a respective cross-section (5), e.g., of slab, thin strand, bloom, beam blank or billet strand cross-section (5), and to a respective cast material and/or cast parameter such as, e.g., cast speed, guide member (6) are connected with stationary articulated means (7) for an optimal oscillation curve of the elevating table,
characterized in that
the elevating table (8) is formed as one-piece frame-shaped table with an inner space (8 a) for passing through the cast strand (4) and correspondingly dimensioned, and in that the oscillation drives (3) are arranged in corners (8 b) inside a frame surface (8 c) and are controlled in a fully synchronized manner with a lateral pairwise offset with regard to an arched, or together, for a perpendicular straight draw-out movement.
2. A device according to claim 1,
characterized in that
the continuous casting mold (1) with its cooling units (1 a) is directly placed on the frame-shaped elevating table (8).
3. A device according to claim 1,
characterized in that
the frame-shaped elevating table (8) is provided with cooling channels connected with a cooling medium network.
4. A device according to claim 1,
characterized in that
the stationary articulation means (7) of the guide members (6) consists of leaf springs (7 a) in form of an assembly (7 b) hingedly supported on the elevating table (8) and a stationary base frame (11).
US11/587,221 2004-04-24 2005-04-08 Device for Accommodating a Continuous Casting Mold on an Elevating Table Abandoned US20070289716A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004020130A DE102004020130A1 (en) 2004-04-24 2004-04-24 Apparatus for receiving a continuous casting mold on a lifting table for casting liquid metals, in particular liquid steel materials
DE102004020130.7 2004-04-24
PCT/EP2005/003726 WO2005105342A1 (en) 2004-04-24 2005-04-08 Device for accommodating a continuous casting mold on an elevating table for casting molten metals, particularly molten steel materials

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US20070289716A1 true US20070289716A1 (en) 2007-12-20

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US (1) US20070289716A1 (en)
EP (1) EP1750871A1 (en)
JP (1) JP2007534497A (en)
KR (1) KR20070001192A (en)
CN (1) CN1946498A (en)
CA (1) CA2563230A1 (en)
DE (1) DE102004020130A1 (en)
RU (1) RU2006134288A (en)
WO (1) WO2005105342A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102328888B (en) * 2011-09-15 2013-12-25 莱芜钢铁集团有限公司 Hydraulic servo synchronous lifting device and control method thereof
ITMI20112292A1 (en) * 2011-12-16 2013-06-17 Arvedi Steel Engineering S P A SUPPORT AND OSCILLATION DEVICE FOR LINGOTTER IN CONTINUOUS CASTING SYSTEMS
CN103331424B (en) * 2013-05-08 2015-02-25 中国重型机械研究院股份公司 Double-vibrating unit arc slab continuous casting machine crystallizer hydraulic vibrating mechanism
AT514495B1 (en) * 2013-06-27 2016-05-15 Primetals Technologies Austria GmbH Two-dimensional oscillation of a continuous casting mold
KR101594654B1 (en) * 2013-12-20 2016-02-16 주식회사 포스코 Mold vibrated apparatus for continuous caster
DE102014202404A1 (en) 2014-02-11 2015-08-13 Sms Siemag Ag Oscillation device for a continuous casting mold and various test methods
DE102017201496A1 (en) * 2017-01-31 2018-08-02 Sms Group Gmbh An oscillating system for a continuous casting mold, and a method for generating an oscillatory movement of a continuous casting mold
CN108145102A (en) * 2017-12-18 2018-06-12 中冶连铸技术工程有限责任公司 A kind of hydraulic vibration device applied to multislab conticaster
CN113680981B (en) * 2021-07-30 2023-10-27 上海二十冶建设有限公司 Positioning tool for crystallizer vibration device of continuous casting machine and use method

Citations (4)

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Publication number Priority date Publication date Assignee Title
US3703923A (en) * 1970-11-12 1972-11-28 United States Steel Corp Balancing mechanism and method for continuous casting molds
US4532975A (en) * 1983-04-28 1985-08-06 United States Steel Corporation Continuous casting mold oscillator load indication system
US5522450A (en) * 1993-12-20 1996-06-04 Voest-Alpine Industrieanlagenbau Gmbh Continuous casting plate mold
US6138743A (en) * 1998-04-21 2000-10-31 Sms Schloemann-Siemag Aktiengesellschaft Lifting table with oscillation drive for a continuous casting plant

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Publication number Priority date Publication date Assignee Title
AT382540B (en) * 1985-06-27 1987-03-10 Voest Alpine Ag CONTINUOUS CASTING MACHINE WITH A CHOCOLATE STORED ON AN OSCILLATING LIFTING TABLE
AT383521B (en) * 1985-12-23 1987-07-10 Voest Alpine Ag Guide arrangement for an oscillating mould of a continuous casting plant
DE19845357A1 (en) * 1998-10-02 2000-04-06 Schloemann Siemag Ag Method and device for the continuous control of the basic setting and oscillation parameters of a continuous casting mold
DE19946069A1 (en) * 1999-09-25 2001-03-29 Sms Demag Ag Management of mold lifting tables in a continuous caster
DE10022598A1 (en) * 2000-05-10 2001-11-15 Sms Demag Ag Continuous metal casting mold with a profiled casting cross section is mounted in a swing frame on leaf springs with an adjustable oscillating drive for profiled continuous casting

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3703923A (en) * 1970-11-12 1972-11-28 United States Steel Corp Balancing mechanism and method for continuous casting molds
US4532975A (en) * 1983-04-28 1985-08-06 United States Steel Corporation Continuous casting mold oscillator load indication system
US5522450A (en) * 1993-12-20 1996-06-04 Voest-Alpine Industrieanlagenbau Gmbh Continuous casting plate mold
US6138743A (en) * 1998-04-21 2000-10-31 Sms Schloemann-Siemag Aktiengesellschaft Lifting table with oscillation drive for a continuous casting plant

Also Published As

Publication number Publication date
DE102004020130A1 (en) 2005-11-17
EP1750871A1 (en) 2007-02-14
CN1946498A (en) 2007-04-11
KR20070001192A (en) 2007-01-03
CA2563230A1 (en) 2005-11-10
WO2005105342A1 (en) 2005-11-10
JP2007534497A (en) 2007-11-29
RU2006134288A (en) 2008-04-10

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AS Assignment

Owner name: SMS DEMAG AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WEYER, AXEL;MUELLER, JUERGEN;REEL/FRAME:019631/0584

Effective date: 20061025

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION