EP0761343A1 - Verfahren und Vorrichtung zum Anfahren einer Giesswalzenstranggussanlage - Google Patents

Verfahren und Vorrichtung zum Anfahren einer Giesswalzenstranggussanlage Download PDF

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Publication number
EP0761343A1
EP0761343A1 EP96420255A EP96420255A EP0761343A1 EP 0761343 A1 EP0761343 A1 EP 0761343A1 EP 96420255 A EP96420255 A EP 96420255A EP 96420255 A EP96420255 A EP 96420255A EP 0761343 A1 EP0761343 A1 EP 0761343A1
Authority
EP
European Patent Office
Prior art keywords
injector
law
tank
liquid metal
cylinders
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
EP96420255A
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English (en)
French (fr)
Other versions
EP0761343B1 (de
Inventor
Pierre-Yves Mente
Marcel Cortes
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.)
Constellium Issoire SAS
Original Assignee
Pechiney Rhenalu SAS
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 Pechiney Rhenalu SAS filed Critical Pechiney Rhenalu SAS
Publication of EP0761343A1 publication Critical patent/EP0761343A1/de
Application granted granted Critical
Publication of EP0761343B1 publication Critical patent/EP0761343B1/de
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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
    • 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
    • B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels

Definitions

  • the invention relates to the field of continuous casting between rolls (generally known in English as rollcasting) of aluminum and its alloys.
  • the invention relates more particularly to the casting of aluminum or aluminum alloy strips of thickness less than or equal to 4.5 mm.
  • strips are then cold rolled to the final thickness which depends on the intended application.
  • a strip intended for the beverage can application will be cold rolled from the thickness 6/10 mm from the continuous casting machine up to approximately 0.3 mm.
  • the injectors usually used in the continuous casting between cylinders of thicker strips (6-10 mm) can be used.
  • These injectors have a wide variety of shapes, with or without baffles and spacers and are generally made from refractory materials such as ceramic fibers for example.
  • a conventional injector is shown in fig. 3a.
  • An injector has an upper part (15) and a lower part (16) between which the liquid metal flows.
  • the injector has three zones: an upstream zone called tank (11) which receives the liquid metal coming from the furnace (31), a central zone (12) which can include a number of baffles and spacers and an end zone , cylinder side, which is usually designated by the term lips (13).
  • FIG. 3b Such an injector is shown in FIG. 3b.
  • the tank (11) which receives the liquid metal from the furnace and distributes it in the central area of the injector (12) may have a width less than the width of the central area of the injector (12). This is the case shown in fig. 4a. But in this case, "dead" zones are created in the flow of the liquid metal which make it more difficult to control the temperature of the liquid metal during the start-up period. For starting a thin strip casting ( ⁇ 4.5 mm), it is more advantageous to use a tank whose width is equal to the width of the central area of the injector (fig. 4b). This tank may or may not be equipped with an electromagnetic stirrer intended to homogenize the temperature of the metal contained.
  • FIG. 5a represents a configuration where the injector is drawn in such a way that the passage between the tank (11) and the central area (12) is completely free over the entire width of the injector.
  • the corresponding dam (14) is constituted by a plate in one piece over the entire width.
  • FIG. 5b represents a configuration where the passage between the tank (11) and the central zone of the injector (12) is obstructed by a spacer forming an integral part of the injector. This spacer is pierced with several passage orifices distributed over the entire width of the injector. To the right of each of the orifices is a dam (14).
  • the materials used for this dam (s) are all the materials usually used in the casting of aluminum such as refractory or potey steel.
  • the control of the temperatures of the liquid metal all along the chain which goes from the oven to the cylinders is an essential point for a successful start-up.
  • the thermal inertia of the furnace or the presence of continuous treatment and / or filtration devices make this control more difficult.
  • the optimal conditions for starting with regard to the temperature of the liquid metal are significantly different from the conditions of the steady state and the transition from the start regime to the steady state requires a lot of time which affects the productivity of the machine. and the regularity of the quality of the tape. It is useful in this case to provide a reserve of extra liquid metal in an oven or an annex pocket, maintained at a precise temperature. This make-up liquid metal replaces or is added to the liquid metal coming from the oven during the start-up period.
  • the sensor (21) can be inductive or capacitive or laser.
  • the actuator (23) can be a stopper or hatch actuator.
  • the law of evolution of the level given as a setpoint to the regulator (23) is, in a simplified version of the invention, a law predetermined by prior experiments and simply a function of time. It is also possible to give the regulator (23), as a setpoint, a level law dependent on the casting speed and not on the time. Finally, it is possible to adopt a mixed solution where the level law is a pre-established law as a function of time, possibly corrected by the speed measurement when it deviates from a given range.
  • the law of displacement of the injector support given as a setpoint to the regulator (44) is in a simplified version of the invention a law predetermined by prior experiments and simply a function of time. It is also possible to give the regulator (44) as a setpoint a law of displacement of the injector support depending on the measurement of the tightening of the cylinders or a law of displacement depending on a measurement in situ of the position of the injector . Finally, it is possible to adopt mixed solutions where the displacement law is a pre-established law and a function of time, possibly corrected by measuring the tightening of the cylinders and / or measuring the position of the injector when these parameters are 'deviate from a given range.
  • the aim of this permanent adjustment of the position of the injector is to maintain between 0.1 and 0.5 mm the distance between the lips of the cylinders and to make the central plane of the injector coincide with the casting plane ( 53) equidistant from the two cylinders.
  • the starting method and device according to the invention find their full effectiveness when all of the operations are automated, thus avoiding the risks of human failure.
  • the method according to the invention can also be used while maintaining manual interventions such as for example the opening of the dam (s).
  • Figure 1 is a schematic sectional view of a casting machine between rolls.
  • Figure 2 is a schematic top view of a casting machine between rolls.
  • Figure 3a shows in section a conventional tank / injector assembly.
  • Figure 3b shows in section a tank / injector assembly according to a preferred version of the invention.
  • FIG. 4a represents in perspective a tank / injector assembly where the tank has a width less than the width of the central zone of the injector.
  • FIG. 4b represents in perspective a tank / injector assembly according to a preferred version of the invention where the width of the tank is equal to the width of the central area of the injector.
  • FIG. 5a represents in perspective a tank / injector assembly where the passage between tank and central area of the injector is closed by a spacer itself pierced with passages spaced over the entire width.
  • Figure 5b shows in perspective an injector tank assembly according to a preferred version of the invention where the passage between tank and central area of the injector is completely free and where the dam consists of a plate in one piece over all the width.
EP96420255A 1995-08-03 1996-07-25 Verfahren und Vorrichtung zum Anfahren einer Giesswalzenstranggussanlage Expired - Lifetime EP0761343B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9509645A FR2737430B1 (fr) 1995-08-03 1995-08-03 Procede et dispositif de demarrage d'une machine de coulee continue entre cylindres
FR9509645 1995-08-03

Publications (2)

Publication Number Publication Date
EP0761343A1 true EP0761343A1 (de) 1997-03-12
EP0761343B1 EP0761343B1 (de) 2002-02-27

Family

ID=9481813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96420255A Expired - Lifetime EP0761343B1 (de) 1995-08-03 1996-07-25 Verfahren und Vorrichtung zum Anfahren einer Giesswalzenstranggussanlage

Country Status (12)

Country Link
EP (1) EP0761343B1 (de)
JP (1) JP3047162B2 (de)
KR (1) KR100301692B1 (de)
AT (1) ATE213676T1 (de)
BR (1) BR9603259A (de)
CZ (1) CZ230096A3 (de)
DE (1) DE69619445T2 (de)
ES (1) ES2172647T3 (de)
FR (1) FR2737430B1 (de)
NO (1) NO963204L (de)
RU (1) RU2153406C2 (de)
TW (1) TW317517B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999010119A1 (en) * 1997-08-27 1999-03-04 Kaiser Aluminum & Chemical Corporation Apparatus for adjusting the gap in a strip caster
WO1999041031A1 (fr) * 1998-02-13 1999-08-19 Pechiney Rhenalu Bandes en alliage d'aluminium a grande homogeneite de surface et procede de fabrication de ces bandes
FR2775916A1 (fr) * 1998-03-13 1999-09-17 Pechiney Rhenalu Procede et dispositif de controle du profil d'epaisseur d'une bande metallique mince obtenue par coulee continue entre moules mobiles
WO2023192797A1 (en) * 2022-03-30 2023-10-05 Novelis Inc. Automatic dam positioning systems and methods for controlling molten metal distribution to continuous casters

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPO591697A0 (en) * 1997-03-27 1997-04-24 Bhp Steel (Jla) Pty Limited Casting metal strip
KR100957038B1 (ko) 2007-12-21 2010-05-13 한국기계연구원 판재 연속 주조장치
DE102015114725B3 (de) * 2015-09-03 2016-12-08 Salzgitter Flachstahl Gmbh Schmelzenaufgabesystem für eine horizontale Bandgießanlage
CN108480577A (zh) * 2018-03-13 2018-09-04 闻喜县远华冶金材料有限公司 铸轧镁合金型材的生产方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB897412A (en) * 1958-01-31 1962-05-30 Pechiney Continuous casting of metals and other fusible materials
US3405757A (en) * 1967-04-12 1968-10-15 Harvey Aluminum Inc Method and apparatus for continuous casting of metal between oppositely rotatable cooling rolls set generally one above the other
FR2398565A1 (fr) * 1977-07-27 1979-02-23 Scal Gp Condit Aluminium Busette d'alimentation en metal liquide pour machine de coulee continue de bande
US4550767A (en) * 1984-04-09 1985-11-05 Aluminum Company Of America Roll caster apparatus having uniform flow of molten metal into novel nozzle tip assembly
EP0443204A1 (de) * 1990-02-19 1991-08-28 Lauener Engineering AG Metallschmelzezuführung in einer Bandgiessvorrichtung
EP0596202A1 (de) * 1992-10-06 1994-05-11 Reynolds Metals Company Einstellbare Fliess-Kontrolleinrichtung zum Stranggiessen von Metallbändern
US5343932A (en) * 1993-04-26 1994-09-06 Reynolds Metals Company System for feeding molten metal stream to continuous strand caster

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB897412A (en) * 1958-01-31 1962-05-30 Pechiney Continuous casting of metals and other fusible materials
US3405757A (en) * 1967-04-12 1968-10-15 Harvey Aluminum Inc Method and apparatus for continuous casting of metal between oppositely rotatable cooling rolls set generally one above the other
FR2398565A1 (fr) * 1977-07-27 1979-02-23 Scal Gp Condit Aluminium Busette d'alimentation en metal liquide pour machine de coulee continue de bande
US4550767A (en) * 1984-04-09 1985-11-05 Aluminum Company Of America Roll caster apparatus having uniform flow of molten metal into novel nozzle tip assembly
EP0443204A1 (de) * 1990-02-19 1991-08-28 Lauener Engineering AG Metallschmelzezuführung in einer Bandgiessvorrichtung
EP0596202A1 (de) * 1992-10-06 1994-05-11 Reynolds Metals Company Einstellbare Fliess-Kontrolleinrichtung zum Stranggiessen von Metallbändern
US5343932A (en) * 1993-04-26 1994-09-06 Reynolds Metals Company System for feeding molten metal stream to continuous strand caster

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999010119A1 (en) * 1997-08-27 1999-03-04 Kaiser Aluminum & Chemical Corporation Apparatus for adjusting the gap in a strip caster
US6044896A (en) * 1997-08-27 2000-04-04 Alcoa Inc. Method and apparatus for controlling the gap in a strip caster
WO1999041031A1 (fr) * 1998-02-13 1999-08-19 Pechiney Rhenalu Bandes en alliage d'aluminium a grande homogeneite de surface et procede de fabrication de ces bandes
FR2774930A1 (fr) * 1998-02-13 1999-08-20 Pechiney Rhenalu Bandes en alliage d'aluminium a grande homogeneite de surface et procede de fabrication de ces bandes
US6834708B1 (en) 1998-02-13 2004-12-28 Pechiney Rhenalu Aluminium alloys strips with high surface homogeneity and method for making same
FR2775916A1 (fr) * 1998-03-13 1999-09-17 Pechiney Rhenalu Procede et dispositif de controle du profil d'epaisseur d'une bande metallique mince obtenue par coulee continue entre moules mobiles
WO1999047293A1 (fr) * 1998-03-13 1999-09-23 Pechiney Rhenalu Procede et dispositif de controle du profil d'epaisseur d'une bande metallique mince obtenue par coulee continue entre moules mobiles
WO2023192797A1 (en) * 2022-03-30 2023-10-05 Novelis Inc. Automatic dam positioning systems and methods for controlling molten metal distribution to continuous casters

Also Published As

Publication number Publication date
TW317517B (de) 1997-10-11
JP3047162B2 (ja) 2000-05-29
ES2172647T3 (es) 2002-10-01
EP0761343B1 (de) 2002-02-27
DE69619445T2 (de) 2002-10-24
DE69619445D1 (de) 2002-04-04
CZ230096A3 (en) 1997-02-12
BR9603259A (pt) 1998-04-28
FR2737430A1 (fr) 1997-02-07
ATE213676T1 (de) 2002-03-15
NO963204D0 (no) 1996-07-31
KR100301692B1 (ko) 2001-11-22
FR2737430B1 (fr) 1997-09-05
NO963204L (no) 1997-02-04
JPH09103851A (ja) 1997-04-22
RU2153406C2 (ru) 2000-07-27

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