US20100288462A1 - Casting system with a device for applying fluid onto a cast strip - Google Patents

Casting system with a device for applying fluid onto a cast strip Download PDF

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Publication number
US20100288462A1
US20100288462A1 US12/734,761 US73476108A US2010288462A1 US 20100288462 A1 US20100288462 A1 US 20100288462A1 US 73476108 A US73476108 A US 73476108A US 2010288462 A1 US2010288462 A1 US 2010288462A1
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United States
Prior art keywords
casting system
dispensing chamber
fluid
liquid metal
application device
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.)
Abandoned
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US12/734,761
Inventor
Norbert Vogl
Joerg Bausch
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SMS Siemag AG
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Individual
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.)
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Assigned to SMS SIEMAG AKTIENGESELLSCHAFT reassignment SMS SIEMAG AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BAUSCH, JOERG, VOGL, NORBERT
Publication of US20100288462A1 publication Critical patent/US20100288462A1/en
Abandoned legal-status Critical Current

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    • 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
    • B22D11/064—Accessories therefor for supplying molten metal
    • B22D11/0642—Nozzles

Definitions

  • the invention relates to a casting system with an application device for applying fluid such as, in particular, liquid metal onto a cast strip, in particular, according to preamble of claim 1 .
  • the liquid steel is fed from the reservoir into the dispensing chamber more or less continuously and therefrom by the application device, essentially without a large height difference, onto a cooled movable continuous strip that, as a rule, is a metal strip. There, the liquid metal is carried with a casting speed and cooled and is so processed in a metal strip.
  • the applied liquid metal is applied uniformly with respect to the casting width and thickness and with a thin layer onto the movable strip because otherwise a non-uniform cast metal strip is produced.
  • this is effected by having the width of the dispensing chamber to correspond to the predetermined strip width, and the liquid metal then flows parallel from the dispensing chamber through the application device onto the movable strip.
  • This requires dispensing chambers with an increased width, so that different dispensing chambers in accordance with respective strip width were required.
  • the application can be effected with the dispensing chamber having a smaller width than the width of the casting strip, so that the liquid metal is widened to the predetermined casting width in the application device and is so distributed.
  • the drawback consists in that the uniform thickness and distribution is not optimally achievable, and damaging thickness variations occur. This is also a result of heat losses by the liquid metal as it flows from then dispensing chamber toward the movable strip, which causes irregular casting behavior of the partially cooled liquid, with the liquid metal not being adequately spreadable and, therefore, non-uniformly cooled.
  • the produced surface waves reduce the quality which basically affects the value and usefulness of the end product.
  • this object is achieved with a casting system having in particular, a reservoir for a fluid, such as, in particular, liquid metal, a dispensing chamber connectable by a connection with the reservoir, and an application device which spreads the fluid to a predetermined width and with which it is spread on a movable strip, and wherein the connection between the dispensing chamber and the application device is formed as a closed tubular connection.
  • a fluid such as, in particular, liquid metal
  • a dispensing chamber connectable by a connection with the reservoir
  • an application device which spreads the fluid to a predetermined width and with which it is spread on a movable strip
  • the tubular connection is a closed pipe.
  • the tubular connection includes a plurality of closed pipes. With closed pipes, the free surface of the fluid is reduced. Thereby, an increased measure of heat insulation is achieved and, therefore, the liquid metal is not cooled very much.
  • the plurality of closed pipes is arranged beneath and/or next to each other. According to a further embodiment, it may be appropriate when the plurality of closed pipes is arranged parallel to each other. According to yet another embodiment it may be appropriate when the plurality of closed pipes is arranged relative to each other in a fan-like manner.
  • the inlet for the fluid, or for liquid metal is located, during operation of the system, in a region of the dispensing chamber beneath the surface of the fluid or the fluid metal in the dispensing chamber.
  • FIG. 1 a schematic view of a casting system according to the present invention with a device for applying a fluid, in particular liquid metal or liquid steel onto a cast strip;
  • FIG. 2 a schematic view of the application device
  • FIG. 3 a cross-sectional view of the application device shown in FIG. 2 .
  • FIG. 1 shows schematically a casting system 1 according to the present invention.
  • the casting system 1 has a reservoir 2 in which preferably a fluid such as fluid metal is produced, e.g., warmed up and/or liquefied or made available.
  • a fluid such as fluid metal
  • the liquid metal reaches a dispensing chamber 5 from which it is fed to the application device 7 and is distributed over a predetermined width 8 and is applied to a movable metal strip 9 .
  • the metal strip 9 is a continuous strip movable around a pair of rollers 10 , with only one roller 10 being shown in FIG. 1 . The other roller cannot be seen.
  • the continuous metal strip 9 is wound about both rollers 10 , forming a closed strip.
  • the pipe 6 is closed so that the free surface of the fluid is reduced.
  • the pipe serves as heat insulation and, therefore, the flowing-through liquid metal hardly cools before it spreads toward the application device 7 and is applied to the movable metal strip 9 and is cooled there further. Thereby, essentially, a uniformly cast metal strip 11 is produced.
  • connection as the closed pipe 6 because inserting of the liquid metal 3 in the region of the closed pipe 6 can be dispensed with because apart from then application device 7 , hardly any or no free surface is available that could lead to cooling or oxidation of the liquid metal.
  • the advantages of the inventive device consists in that the pipe 6 with its inlet 12 is located in the region of the dispensing chamber 5 beneath the surface of the liquid metal, so that during the operation, the pipe 6 is located beneath the level of the liquid metal.
  • pipes 6 can be used which are arranged between the application device 7 and the dispensing chamber 5 .
  • two or more pipes 6 can be arranged parallel to each other and/or above each other.
  • pipes 6 can be provided which spread somewhat in a fan-shaped manner.
  • Pipe 6 or pipes 6 advantageously have a discharge geometry of the end profile 13 which insures a uniform discharge of the liquid metal. Thereby, it can be achieved that the pipe 6 at an end of the end profile 13 is flattened and/or widened in the plane of the application device 7 .
  • the pipe 6 can be formed as a heat-insulating pipe 6 , e.g., as a double-wall pipe, so that the liquid metal that flows through the pipe 6 , retains its temperature substantially unaffected, and an unavoidable temperature reduction is advantageously minimized.
  • FIG. 2 shows schematically an application device 20
  • FIG. 3 shows its cross-section.
  • the device 20 has a bottom 21 and two opposite side walls 22 , 23 .
  • the liquid metal flows from the pipe 6 conventionally over the bottom 21 in the direction of arrow R toward a remote wall 25 the height of which is so selected that it is lower than both side walls 22 , 23 .
  • the liquid metal flows over the wall 25 and flows between the wall 25 and a closure wall 26 through an opening 27 , so that the stream of the liquid metal is essentially deflected downwardly by 90°.
  • the closure wall 26 is so formed that it extends essentially perpendicular to the flow direction of the liquid metal with respect to the bottom 21 . Viewing perpendicular to the bottom, the closure wall height is so selected that it is essentially equal to the height of both side walls 22 , 23 .
  • the side walls 22 , 23 advantageously are so formed that they spread from the region 24 , in which the liquid metal is fed to the device 20 , in the direction toward the both walls 25 , 26 transverse to the expanding direction or flow direction R of the metal.
  • the sidewise demarcation of the spread can be staggered or continuous.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Coating Apparatus (AREA)
  • Coating With Molten Metal (AREA)
  • Metal Rolling (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Casting Devices For Molds (AREA)

Abstract

The invention relates to a casting system (1) having a reservoir (2) for a fluid (3), such as, in particular, liquid metal, a dispensing chamber (5) connectable by a connection (4) with the reservoir, and an application device (7) with which the fluid is spreadable to a predetermined width and with which it is spread on a movable strip (9), wherein the connection between the dispensing chamber and the application device is formed as a closed tubular connection (6).

Description

    TECHNICAL FIELD
  • The invention relates to a casting system with an application device for applying fluid such as, in particular, liquid metal onto a cast strip, in particular, according to preamble of claim 1.
    • STATE OF THE ART
  • In the state of the art, known are horizontal casting systems in which liquid steel as fluid is fed from a reservoir in a dispensing chamber and from the dispensing chamber to an application device for applying liquid metal onto a movable about rollers, continuous strip.
  • The liquid steel is fed from the reservoir into the dispensing chamber more or less continuously and therefrom by the application device, essentially without a large height difference, onto a cooled movable continuous strip that, as a rule, is a metal strip. There, the liquid metal is carried with a casting speed and cooled and is so processed in a metal strip.
  • It is essential that the applied liquid metal is applied uniformly with respect to the casting width and thickness and with a thin layer onto the movable strip because otherwise a non-uniform cast metal strip is produced.
  • Advantageously, this is effected by having the width of the dispensing chamber to correspond to the predetermined strip width, and the liquid metal then flows parallel from the dispensing chamber through the application device onto the movable strip. This, however, requires dispensing chambers with an increased width, so that different dispensing chambers in accordance with respective strip width were required.
  • The application can be effected with the dispensing chamber having a smaller width than the width of the casting strip, so that the liquid metal is widened to the predetermined casting width in the application device and is so distributed.
  • The drawback consists in that the uniform thickness and distribution is not optimally achievable, and damaging thickness variations occur. This is also a result of heat losses by the liquid metal as it flows from then dispensing chamber toward the movable strip, which causes irregular casting behavior of the partially cooled liquid, with the liquid metal not being adequately spreadable and, therefore, non-uniformly cooled. The produced surface waves reduce the quality which basically affects the value and usefulness of the end product.
  • The devices described above are disclosed, e.g., in European Patent EPO 962 271 B1. This document discloses a system of casting metal strips with a reservoir for supplying a dispensing chamber with fluid metal, with the liquid metal flowing from the dispensing chamber through a channel to a widening device for applying metal on a movable continuous strip. Here, the above-mentioned problems of unevenly cast strips occur.
    • DISCLOSURE OF THE INVENTION, OBJECTS, SOLUTION, ADVANTAGES
  • It is an object of the present invention to provide a casting system with a device for applying fluid, in particular, metal onto a cast strip and with which the drawbacks of the state of the art are minimized or even completely eliminated.
  • According to the invention, this object is achieved with a casting system having in particular, a reservoir for a fluid, such as, in particular, liquid metal, a dispensing chamber connectable by a connection with the reservoir, and an application device which spreads the fluid to a predetermined width and with which it is spread on a movable strip, and wherein the connection between the dispensing chamber and the application device is formed as a closed tubular connection.
  • In such casting system, it is advantageous when the tubular connection is a closed pipe. According to another embodiment, it may be appropriate when the tubular connection includes a plurality of closed pipes. With closed pipes, the free surface of the fluid is reduced. Thereby, an increased measure of heat insulation is achieved and, therefore, the liquid metal is not cooled very much.
  • It is further advantageous when the plurality of closed pipes is arranged beneath and/or next to each other. According to a further embodiment, it may be appropriate when the plurality of closed pipes is arranged parallel to each other. According to yet another embodiment it may be appropriate when the plurality of closed pipes is arranged relative to each other in a fan-like manner.
  • Those can be so formed that the pipes at their end adjacent to the dispensing chamber lie closer to each other than at their opposite ends.
  • With regard to the discharge of fluid, it is advantageous when the end profile of the at least one pipe is flattened and/or spread, so that an optimal discharge can take place.
  • According to still a further advantageous embodiment, it may be appropriate when the inlet for the fluid, or for liquid metal, is located, during operation of the system, in a region of the dispensing chamber beneath the surface of the fluid or the fluid metal in the dispensing chamber.
  • Further improvements are described in the subclaims.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • Below the invention will be described in detail based on an exemplary embodiment with reference to the drawings.
  • The drawings show:
  • FIG. 1 a schematic view of a casting system according to the present invention with a device for applying a fluid, in particular liquid metal or liquid steel onto a cast strip;
  • FIG. 2 a schematic view of the application device; and
  • FIG. 3 a cross-sectional view of the application device shown in FIG. 2.
    •  PREFERRED EMBODIMENT OF THE INVENTION
  • FIG. 1 shows schematically a casting system 1 according to the present invention. The casting system 1 has a reservoir 2 in which preferably a fluid such as fluid metal is produced, e.g., warmed up and/or liquefied or made available. Through the pipe 4, the liquid metal reaches a dispensing chamber 5 from which it is fed to the application device 7 and is distributed over a predetermined width 8 and is applied to a movable metal strip 9. The metal strip 9 is a continuous strip movable around a pair of rollers 10, with only one roller 10 being shown in FIG. 1. The other roller cannot be seen. The continuous metal strip 9 is wound about both rollers 10, forming a closed strip.
  • According to the inventive embodiment of the casting system shown in FIG. 1, the pipe 6 is closed so that the free surface of the fluid is reduced. Inasmuch as the pipe serves as heat insulation and, therefore, the flowing-through liquid metal hardly cools before it spreads toward the application device 7 and is applied to the movable metal strip 9 and is cooled there further. Thereby, essentially, a uniformly cast metal strip 11 is produced. By forming the closed pipe 6 as connection between the dispensing chamber 5 and the application device 7, the heat losses of the liquid flowing-through metal are reduced because the free surface is reduced. It is further advantageous to form the connection as the closed pipe 6 because inserting of the liquid metal 3 in the region of the closed pipe 6 can be dispensed with because apart from then application device 7, hardly any or no free surface is available that could lead to cooling or oxidation of the liquid metal.
  • Further, the advantages of the inventive device consists in that the pipe 6 with its inlet 12 is located in the region of the dispensing chamber 5 beneath the surface of the liquid metal, so that during the operation, the pipe 6 is located beneath the level of the liquid metal. Thereby, the surface waves, which are produced upon flow of the liquid metal in the dispensing chamber, cannot spread sufficiently strongly against the liquid metal in the pipe, so that the casting process is not influenced very strongly, and the cast product thereby is advantageously influenced with respect to the surface evenness. It is also advantageous that based on the arrangement of the inlet 12 of the tube in the region of the dispensing chamber beneath the liquid surface, upon flowing through, the pressure loss takes place, which also causes decoupling of fluid oscillation and flows in the chamber 5 from those in pipe 6, so that fluid oscillations and flows in the pipe are again reduced. It is further advantageous that because of all of this, the volume of the dispensing chamber can be retained small.
  • Instead of the shown pipe 6, several pipes 6 can be used which are arranged between the application device 7 and the dispensing chamber 5. E.g., two or more pipes 6 can be arranged parallel to each other and/or above each other. Also, pipes 6 can be provided which spread somewhat in a fan-shaped manner.
  • Pipe 6 or pipes 6 advantageously have a discharge geometry of the end profile 13 which insures a uniform discharge of the liquid metal. Thereby, it can be achieved that the pipe 6 at an end of the end profile 13 is flattened and/or widened in the plane of the application device 7.
  • Advantageously, the pipe 6 can be formed as a heat-insulating pipe 6, e.g., as a double-wall pipe, so that the liquid metal that flows through the pipe 6, retains its temperature substantially unaffected, and an unavoidable temperature reduction is advantageously minimized.
  • FIG. 2 shows schematically an application device 20, and FIG. 3 shows its cross-section. The device 20 has a bottom 21 and two opposite side walls 22, 23. The liquid metal flows from the pipe 6 conventionally over the bottom 21 in the direction of arrow R toward a remote wall 25 the height of which is so selected that it is lower than both side walls 22, 23. The liquid metal flows over the wall 25 and flows between the wall 25 and a closure wall 26 through an opening 27, so that the stream of the liquid metal is essentially deflected downwardly by 90°. The closure wall 26 is so formed that it extends essentially perpendicular to the flow direction of the liquid metal with respect to the bottom 21. Viewing perpendicular to the bottom, the closure wall height is so selected that it is essentially equal to the height of both side walls 22, 23.
  • The side walls 22, 23 advantageously are so formed that they spread from the region 24, in which the liquid metal is fed to the device 20, in the direction toward the both walls 25, 26 transverse to the expanding direction or flow direction R of the metal. The sidewise demarcation of the spread can be staggered or continuous.
    • LIST OF REFERENCE NUMERALS
  • 1 Casting system
  • 2 Reservoir
  • 3 Fluid, liquid metal
  • 4 Pipe
  • 5 Dispensing chamber
  • 6 Closed pipe
  • 7 Application device
  • 8 Width
  • 9 Movable metal strip
  • 10 Roller
  • 11 Cast metal strip
  • 12 Inlet
  • 13 End profile
  • 20 Application device
  • 21 Bottom
  • 22 Side wall
  • 23 Side wall
  • 24 Region
  • 25 Wall
  • 26 Closure wall
  • 27 Opening
  • 28 Flow direction
  • 29 Section
  • 30 Region

Claims (12)

1. A casting system (1), comprising, in particular, a reservoir (2) for a fluid (3), such as, in particular, liquid metal; a dispensing chamber (5) connectable by a connection (4) with the reservoir; and an application device (7) with which the fluid is spreadable to a predetermined width and with which it is spread onto a movable strip (9), characterized in that
the connection between the dispensing chamber and the application device is formed as a closed tubular connection (6), and the application device (20) has a bottom (21) with side walls (22, 23), wherein at the end of the device (20) remote from the dispensing chamber, a closure wall (26) is provided, and between the closure wall (26) and a remote wall (25), an outlet opening (27) is provided.
2. A casting system according to claim 1, characterized in that
the tubular connection (6) is a closed pipe.
3. A casting system according to claim 1, characterized in that
the tubular connection (6) includes a plurality of closed pipes.
4. A casting system according to claim 3, characterized in that
pipes of the plurality of closed pipes (6) are arranged beneath and/or next to each other.
5. A casting system according to claim 3, characterized in that
the plurality of closed pipes (6) is arranged parallel to each other.
6. A casting system according to claim 3, characterized in that
the plurality of closed pipes (6) is arranged relative to each other in a fan-like manner.
7. A casting system according to claim 1, characterized in that
the end profile (13) of at least one pipe (6) is flattened and/or spread.
8. A casting system according to claim 1, characterized in that
the inlet (12) for the fluid, for such as liquid metal, is located, during operation of the system, in a region of the dispensing chamber (5) beneath the surface of the fluid (3) in the dispensing chamber (5).
9. (canceled)
10. A casting system according to claim 1, characterized in that
the outlet opening (27) is provided in the bottom (21).
11. A casting system according to claim 1, characterized in that
the side walls (22, 23) and the closure wall (26) have essentially the same height.
12. A casting system according to claim 1, characterized in that
the remote wall (25) has a smaller height than the side walls (22, 23) and/or the closure wall (26).
US12/734,761 2007-11-19 2008-11-14 Casting system with a device for applying fluid onto a cast strip Abandoned US20100288462A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102007055346.5 2007-11-19
DE102007055346A DE102007055346A1 (en) 2007-11-19 2007-11-19 Casting machine with a device for application to a casting belt
PCT/EP2008/009662 WO2009065531A1 (en) 2007-11-19 2008-11-14 Casting system with a device for applying a casting strip

Publications (1)

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US20100288462A1 true US20100288462A1 (en) 2010-11-18

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US12/734,761 Abandoned US20100288462A1 (en) 2007-11-19 2008-11-14 Casting system with a device for applying fluid onto a cast strip

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US (1) US20100288462A1 (en)
EP (1) EP2222425A1 (en)
JP (1) JP2011511882A (en)
KR (1) KR101207237B1 (en)
CN (1) CN101965239A (en)
CA (1) CA2705297C (en)
DE (1) DE102007055346A1 (en)
RU (1) RU2471588C2 (en)
UA (1) UA99749C2 (en)
WO (1) WO2009065531A1 (en)

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WO2019104029A1 (en) * 2017-11-22 2019-05-31 Acupac Packaging, Inc. Method and apparatus for coating a substrate

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DE102009054218A1 (en) * 2009-10-21 2011-05-19 Sms Siemag Ag Method and device for lateral flow guidance of a molten metal during strip casting
CN111421118B (en) * 2020-04-27 2023-07-21 贵州莹月帆铝制品有限公司 Aluminum alloy casting and rolling machine double-casting-nozzle structure convenient for grain control

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US7905272B2 (en) * 2006-12-14 2011-03-15 Mkm Mansfelder Kupfer Und Messing Gmbh Method and device for the production of wide strips of copper or copper alloys

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WO2019104029A1 (en) * 2017-11-22 2019-05-31 Acupac Packaging, Inc. Method and apparatus for coating a substrate

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JP2011511882A (en) 2011-04-14
CN101965239A (en) 2011-02-02
WO2009065531A1 (en) 2009-05-28
EP2222425A1 (en) 2010-09-01
KR20100057923A (en) 2010-06-01
RU2471588C2 (en) 2013-01-10
DE102007055346A1 (en) 2009-05-20
UA99749C2 (en) 2012-09-25
CA2705297A1 (en) 2009-05-28
RU2010125223A (en) 2011-12-27
KR101207237B1 (en) 2012-12-03
CA2705297C (en) 2012-07-17

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AS Assignment

Owner name: SMS SIEMAG AKTIENGESELLSCHAFT, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:VOGL, NORBERT;BAUSCH, JOERG;SIGNING DATES FROM 20100506 TO 20100526;REEL/FRAME:024704/0164

STCB Information on status: application discontinuation

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