EP0422056B1 - Procede et installation de fabrication d'une bande metallique d'au maximum 10 mm d'epaisseur - Google Patents

Procede et installation de fabrication d'une bande metallique d'au maximum 10 mm d'epaisseur Download PDF

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Publication number
EP0422056B1
EP0422056B1 EP89907154A EP89907154A EP0422056B1 EP 0422056 B1 EP0422056 B1 EP 0422056B1 EP 89907154 A EP89907154 A EP 89907154A EP 89907154 A EP89907154 A EP 89907154A EP 0422056 B1 EP0422056 B1 EP 0422056B1
Authority
EP
European Patent Office
Prior art keywords
strip
plastic deformation
thickness
takes place
plant
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.)
Revoked
Application number
EP89907154A
Other languages
German (de)
English (en)
Other versions
EP0422056A1 (fr
Inventor
Friedrich Nordmeyer
Ingo Nix
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.)
SUNDWIGER EISENHUETTE MASCHINENFABRIK GMBH & CO.
Original Assignee
Sundwiger Eisenhuette Maschinenfabrik & Co GmbH
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
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Application filed by Sundwiger Eisenhuette Maschinenfabrik & Co GmbH filed Critical Sundwiger Eisenhuette Maschinenfabrik & Co GmbH
Priority to AT89907154T priority Critical patent/ATE81314T1/de
Publication of EP0422056A1 publication Critical patent/EP0422056A1/fr
Application granted granted Critical
Publication of EP0422056B1 publication Critical patent/EP0422056B1/fr
Anticipated expiration legal-status Critical
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1213—Accessories for subsequent treating or working cast stock in situ for heating or insulating strands
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab
    • C21D8/0215—Rapid solidification; Thin strip casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0071—Levelling the rolled product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B9/00—Measures for carrying out rolling operations under special conditions, e.g. in vacuum or inert atmosphere to prevent oxidation of work; Special measures for removing fumes from rolling mills
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0231—Warm rolling

Definitions

  • the tape has an uneven structure in this production. Especially in the case of alloys with a multi-phase solidification structure, dendrites extend from the edge zones to the middle of the strand. This unwanted microstructure cannot be removed by subsequent rolling alone. It is therefore customary, after casting, to temporarily store the strip and to subject it to a structure-refining treatment in a separate process.
  • the invention has for its object to provide a method with which a metal strip with a fine-grained or homogenized structure can be produced continuously.
  • the invention is also based on the object of creating a suitable system.
  • the invention is based on a method for producing a metal strip with a thickness of up to 10 mm, in which a molten metal is cast into a strip and the strip is thereby subjected to a plastic deformation and heat treatment and then passes through a cooling section.
  • a method of this type is part of the generally known prior art.
  • the strip is cast in a thickness close to the final dimensions and that the plastic deformation of the strip takes place at an elevated temperature which enables a change in structure and almost without a reduction in thickness.
  • the temperature at which the plastic deformation takes place is lower than the temperature at which an annealing treatment then takes place.
  • the plastic deformation can take place simultaneously with the annealing treatment.
  • the annealing treatment should take place in a protective gas atmosphere. Even if the annealing treatment does not take place simultaneously with the plastic deformation and therefore at a lower temperature, it is advantageous if the plastic deformation also takes place in a protective gas atmosphere.
  • the plastic deformation without a substantial reduction in the thickness of the strip is preferably carried out by repeatedly bending the strip around axes parallel to the strip plane and perpendicular to the strip running direction.
  • the invention further relates to a system for producing the metal strip with a thickness of up to 10 mm.
  • a plant consists of a plant part arranged in a line, namely a belt casting device, a heat treatment line and / or heat compensation line, a forming unit which plastically deforms the band and a cooling line arranged at the end of the line.
  • a plant of this type belongs to the general state of the art.
  • the deformation unit is set up for a passage of the strip for an at least two-fold bending of the strip in the opposite direction at an elevated temperature which enables a change in structure.
  • the temperature compensation section is preferably arranged in front of the deformation unit. If the heat treatment section is set up for annealing, it is either integrated into the deformation unit or arranged downstream of it.
  • the parts of the plant should be thermally separated from one another.
  • the temperatures to which the strip is to be set in the temperature compensation section and the heat treatment section depend on the material of the strip and on whether the strip is to be subjected to a recrystallization annealing or whether it is to be Structural homogenization should be annealed. If a fine-grain structure is sought for steel, for example, a temperature range of 700 to 1000 o C has proven itself for the recrystallization annealing. In the case of annealing for the purpose of structural homogenization, however, the annealing should take place at a temperature above 1000 o C.
  • Molten metal is applied from a casting vessel 1 filled with molten metal via an outlet gap with an adjustable gap width to the smooth, cooled outer surface of a rotating cooling wheel 2.
  • the thickness of the band 3 which solidifies on the lateral surface can be adjusted to a thickness of up to 10 mm.
  • Forming a loop, the band 3 reaches the area of a first pair of rollers 4.
  • the casting vessel 1 with its outlet gap, the cooling wheel 2 and the pair of rollers 4 are accommodated in a chamber 5 which is closed to the outside atmosphere and filled with protective gas.
  • a line of the first chamber 5 accommodating the casting device 1, 2 there are further chambers 6, 7, 8 which are closed off from the outside atmosphere and in which the strip material is subjected to various treatments.
  • the order of the chambers 6 and 7 is different in the two exemplary embodiments.
  • the strip material is brought to a temperature dependent on the strip material in the chamber 6, which temperature is favorable for the plastic deformation in the subsequent chamber 7.
  • the band 3 is meandered over rollers 9 and plastically deformed, which are arranged between a pair of brake rollers 10 and a pair of traction rollers 11.
  • This type of treatment of tape 3 corresponds to the treatment of one Tape in a straightener.
  • recrystallization annealing can be carried out, which, however, is then preferably carried out in a protective gas atmosphere.
  • the strip is then cooled in accordance with a predetermined program.
  • the treatment takes place in the same chamber 7 immediately after casting the strip in chamber 5.
  • the plastic deformation is not associated with a recrystallization annealing, rather the temperature of the chamber 7 is increased to that for the plastic Deformation set favorable temperature.
  • the treatment should also be carried out under a protective gas atmosphere.
  • a recrystallization annealing takes place in the chamber 6 only after this plastic deformation, preferably under a protective gas atmosphere.
  • the chamber 8 is then cooled again according to a program dependent on the strip material.
  • the invention differs from the prior art in that the strip produced by casting is continuously treated further, so that at the end of the treatment a strip is obtained which, in contrast to the strips produced according to the prior art, has a fine-grained cross-section over its entire cross section or homogenized structure, depending on the treatment temperature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Coating With Molten Metal (AREA)

Claims (10)

  1. Procédé pour la fabrication d'un feuillard métallique (3) d'une épaisseur allant jusqu'à 10 mm, dans lequel une masse métallique fondue est coulée sous forme d'une bande (3) et la bande (3) est soumise en ligne avec cela à une déformation plastique et à un traitement thermique et traverse ensuite un parcours de refroidissement (8),
    caractérisé en ce que la bande (3) est coulée (1, 2) à une épaisseur proche de la dimension finale et la déformation plastique (7) de la bande (3) a lieu à une température accrue permettant une modification de structure et pratiquement sans réduction d'épaisseur.
  2. Procédé selon la revendication 1,
    caractérisé en ce que la température à laquelle est effectuée la déformation plastique (7, 9) est inférieure à la température à laquelle a ensuite lieu un traitement de recuit (figures 2, 6).
  3. Procédé selon la revendication 1,
    caractérisé en ce que la déformation plastique (7) est effectuée en même temps qu'un traitement de recuit (1, 9).
  4. Procédé selon l'une des revendications 1 à 3,
    caractérisé en ce que le traitement de recuit (6, 7) a lieu dans une atmosphère de gaz protecteur.
  5. Procédé selon l'une des revendications 1 à 4,
    caractérisé en ce que la déformation plastique (9) a lieu dans une atmosphère de gaz protecteur.
  6. Procédé selon l'une des revendications 1 à 5,
    caractérisé en ce que la déformation plastique (9) sans réduction notable de l'épaisseur de la bande (3) est effectuée par cintrage multiple de la bande (3) autour d'axes parallèles au plan de la bande et orthogonaux à la direction longitudinale de la bande.
  7. Installation pour la fabrication d'un feuillard métallique d'une épaisseur allant jusqu'à 10 mm, constituée par des constituants d'installation disposés en ligne, à savoir un dispositif de coulée de bande (1, 2), un parcours de traitement par la chaleur (6) et/ou un parcours de compensation de chaleur, une unité de formage (9, 11) qui déforme plastiquement la bande (3) et un parcours de refroidissement (8) disposé à l'extrémité de la ligne, caractérisée en ce que l'unité de formage (9) est aménagée pour une traversée de la bande pour un cintrage au moins double de la bande en directions opposées à une température accrue permettant une modification de structure.
  8. Installation selon la revendication 7,
    caractérisée en ce que le parcours de traitement par la chaleur (6) est disposé avant l'unité de formage (9-11).
  9. Installation selon la revendication 7,
    caractérisée en ce que le parcours de traitement par le chaleur (6) est soit intégré dans l'unité de formage (9-11) soit disposé après elle.
  10. Installation selon l'une des revendications 7 à 9,
    caractérisée en ce que les constituants d'installation individuels (5, 6, 7, 8) sont séparés thermiquement les uns des autres.
EP89907154A 1988-06-30 1989-06-24 Procede et installation de fabrication d'une bande metallique d'au maximum 10 mm d'epaisseur Revoked EP0422056B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89907154T ATE81314T1 (de) 1988-06-30 1989-06-24 Verfahren und anlage zum herstellen eines metallbandes mit einer dicke bis zu 10 mm.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3822063 1988-06-30
DE3822063 1988-06-30

Publications (2)

Publication Number Publication Date
EP0422056A1 EP0422056A1 (fr) 1991-04-17
EP0422056B1 true EP0422056B1 (fr) 1992-10-07

Family

ID=6357606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89907154A Revoked EP0422056B1 (fr) 1988-06-30 1989-06-24 Procede et installation de fabrication d'une bande metallique d'au maximum 10 mm d'epaisseur

Country Status (6)

Country Link
EP (1) EP0422056B1 (fr)
JP (1) JPH03505704A (fr)
AT (1) ATE81314T1 (fr)
DE (2) DE58902433D1 (fr)
RU (1) RU1839682C (fr)
WO (1) WO1990000100A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998052706A1 (fr) * 1997-05-23 1998-11-26 Voest-Alpine Industrieanlagenbau Gmbh Cylindre de coulee pour une installation de coulee continue de bandes minces

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5503217A (en) * 1990-07-23 1996-04-02 Davy Mckee (Sheffield) Limited Method of manufacturing metal strip
WO1995026840A1 (fr) 1994-04-04 1995-10-12 Nippon Steel Corporation Procede de coulee en continu a double rouleaux et dispositif afferent
US6622778B1 (en) * 2000-07-12 2003-09-23 Danieli Technology, Inc. Method for the direct production of scale-free thin metal strip
DE102004062636B4 (de) 2004-12-21 2007-05-24 Salzgitter Flachstahl Gmbh Einrichtung zum horizontalen Bandgießen von Stahl
AU2009326518A1 (en) * 2008-12-09 2011-06-30 Sms Siemag Ag Method for producing strips of metal, and production line for performing the method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US255674A (en) * 1882-03-28 Samuel d

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
US2666003A (en) * 1949-02-18 1954-01-12 Bethlehem Steel Corp Treating strip
SE448381B (sv) * 1978-09-19 1987-02-16 Tsuya Noboru Sett att framstella ett tunt band av kiselstal, tunt kiselstalband och anvendning av dylikt
US4296919A (en) * 1980-08-13 1981-10-27 Nippon Steel Corporation Apparatus for continuously producing a high strength dual-phase steel strip or sheet
DE3517454A1 (de) * 1984-05-14 1985-11-14 Olin Corp., East Alton, Ill. Verfahren und vorrichtung zum walzen von durch radgiessen gebildetem streifenmaterial
DE3626638A1 (de) * 1986-08-06 1988-02-18 Sundwiger Eisen Maschinen Vorrichtung zum herstellen eines gegossenen metallbandes mit amorph und/oder feinkristallinem gefuege

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US255674A (en) * 1882-03-28 Samuel d

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Patent Abstracts of Japan vol 9, nr 316 (M-438)(2039) 12 December 185 & JP-A-60152336 (IG GIJUTSU KENKYUSHO K.K.) 10 August 1985, see abstract *
Patent Abstracts of Japan, vol 12, nr 267 (M-722) (3114), 26 July 1988 & JP-A-6349350 (KAWASAKI STEEL CORP) 2 March 188, see abstract *
Patent Abstracts of Japan, vol 5, nr 101 (M-76)(773), 30 June 1981 & JP-A-5645253 (PIONEER K.K.) 24 April 1981, see abstract *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998052706A1 (fr) * 1997-05-23 1998-11-26 Voest-Alpine Industrieanlagenbau Gmbh Cylindre de coulee pour une installation de coulee continue de bandes minces

Also Published As

Publication number Publication date
RU1839682C (ru) 1993-12-30
DE3990711D2 (en) 1991-04-25
DE58902433D1 (de) 1992-11-12
DE3990711C1 (fr) 1993-03-25
ATE81314T1 (de) 1992-10-15
WO1990000100A1 (fr) 1990-01-11
EP0422056A1 (fr) 1991-04-17
JPH03505704A (ja) 1991-12-12

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