EP0745444A1 - Procédé et installation pour fabriquer des brames minces ou des bandes d'acier - Google Patents

Procédé et installation pour fabriquer des brames minces ou des bandes d'acier Download PDF

Info

Publication number
EP0745444A1
EP0745444A1 EP96107187A EP96107187A EP0745444A1 EP 0745444 A1 EP0745444 A1 EP 0745444A1 EP 96107187 A EP96107187 A EP 96107187A EP 96107187 A EP96107187 A EP 96107187A EP 0745444 A1 EP0745444 A1 EP 0745444A1
Authority
EP
European Patent Office
Prior art keywords
strand
casting
thickness
side walls
mold
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
EP96107187A
Other languages
German (de)
English (en)
Other versions
EP0745444B1 (fr
Inventor
Karl Rittner
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.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag 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 SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0745444A1 publication Critical patent/EP0745444A1/fr
Application granted granted Critical
Publication of EP0745444B1 publication Critical patent/EP0745444B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
    • 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

Definitions

  • the invention relates to a method for producing thin slabs or steel strips, in which a strand of slab cast in a mold is reduced in thickness by at least one pair of squeeze rollers arranged downstream of the mold.
  • EP-B1 0 326 190 which consists of a continuous casting machine with an oscillating continuous mold and cooled walls and a shaping device for the die, which is arranged on the mold outlet and has a pair of reducing rollers Steel strand exists.
  • the continuously cast steel strip which is composed of a solidified strand shell and a liquid core, is thus reduced in thickness in a roll deformation and then rolled.
  • the funnel-shaped, oscillating continuous mold has an outlet cross-section with a thickness of 40 to 50 mm, and after exiting the mold, the cast steel strip of the corresponding thickness is pressed together by the pair of reducing rollers to such an extent that the inner walls of the strand shells already solidified in the mold weld together.
  • the reduction in the thickness of the steel strand which has not yet solidified with the aid of the pair of reducing rollers of the shaping device and at least one rolling stand arranged downstream of it makes it possible to achieve steel strip strands with a thickness which is substantially less than 25 mm, which is dependent on the casting speed and the pressing force of the pair of reducing rollers.
  • Different strip thicknesses occurring behind the pair of reducing rollers are compensated for by means of adapted pressing forces of the reducing rollers.
  • the invention has for its object to provide a reliable method for the production of thin slabs or steel strips of high quality by continuous casting and subsequent roll deformation, wherein a change in the thickness of the strand is possible.
  • the start of casting should be able to be carried out with little structural and control-technical effort and the amount of scrap caused by casting should be reduced.
  • the stated object is achieved in a method of the type specified according to the invention in that, at the start of casting, a strand is cast with a thickness approximately corresponding to the finished-size roller gap of the nip roller pair, the strand consisting of a solidified strand shell and liquid core is passed between the press rollers and then the The casting thickness of the strand is continuously increased and the thicker casting strand between the press rolls is roll-formed to the finished size.
  • the casting process can be carried out quickly and reliably with a thin start-up strand. It is not necessary to adjust the downstream roller guide when casting on. The amount of scrap is low due to the narrow initial cross-section and without a longer transition piece.
  • the invention further proposes that the casting thickness of the strand at the start of casting is 40-60 mm and then 60-80 mm and that the finished thin slab or steel strip strand has a uniform finished thickness in the range of 40-60 mm from the strand tip.
  • the casting width of the slab strand can be adjusted.
  • a system for carrying out the method consists of a thin slab mold formed from cooled broad side walls and narrow side walls and at least one downstream pair of squeeze rollers, two guide profiles lying on the wide side walls each having a guide opening for a narrow side wall, which from a lateral contact position the broad side walls can be displaced between the broad side walls and the broad side walls can be adjusted in a defined manner from a narrow spacing position into a further spacing position.
  • the broad side walls can form an enlarged pouring area, which is reduced to the format of the cast strand in the casting direction.
  • a mold 1 for the continuous casting of thin slabs 2 consists of two cooled broad side walls 3 and two narrow side walls 4.
  • the wide side walls 3 form an enlarged upper pouring area 6 for receiving an immersion pouring tube 5 .
  • the broad side walls 3 of the mold 1 are each attached to a lateral frame part 9, which can be adjusted in their mutual spacing by spindle drives 10.
  • a U-shaped guide profile 14 is fastened to the head piece 12, in which a support element 15 of the narrow side wall 4 is displaceably guided in the direction of the arrow 16.
  • the guide profile 14 is located on the end face on the side surfaces of the broad side walls 3 in contact.
  • the narrow side wall 4 penetrates the guide profile 14 and forms the mold wall.
  • the method according to the invention is described with reference to the drawing as follows.
  • the preparation of the system for casting on a slab 2 takes place by setting the mold width, nip roller gap and guide roller spacing to the thickness of the starting strand 18 provided with a connecting head 17, e.g. 50 mm.
  • the narrow side walls 4 are in lateral contact with the wide side walls 3.
  • the molten steel is passed into the mold 1 through a dip tube 5.
  • the molten steel solidifies on the cooled mold walls to form the strand shell 19 and forms a sprue connection with the connecting head 17 of the starting strand 18.
  • the broad side walls 3 are adjusted by the spindle drives 10 to the larger width shown in FIGS. 2 and 5, for example 70 mm.
  • the thicker slab strand 2a cast as a result of this setting is made by the pinch rolls set with the roll gap unchanged 7 reduced by pressing together the opposing strand shells 19 to a thickness of 50 mm and is guided by the guide rollers 8 until completely solidified.
  • a width adjustment of the cast slab strand 2a is achieved according to FIG. 6 by a transverse adjustment of the narrow side walls 4 between the broad side walls 3 in the direction of arrow 16.
  • the transmission element 20 symbolizes the adjustment drive.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Metal Rolling (AREA)
  • Coating With Molten Metal (AREA)
EP96107187A 1995-05-27 1996-05-07 Procédé et installation pour fabriquer des brames minces ou des bandes d'acier Expired - Lifetime EP0745444B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19519560A DE19519560A1 (de) 1995-05-27 1995-05-27 Verfahren zur Herstellung von Dünnbrammen oder Stahlbändern
DE19519560 1995-05-27

Publications (2)

Publication Number Publication Date
EP0745444A1 true EP0745444A1 (fr) 1996-12-04
EP0745444B1 EP0745444B1 (fr) 1999-12-29

Family

ID=7763073

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96107187A Expired - Lifetime EP0745444B1 (fr) 1995-05-27 1996-05-07 Procédé et installation pour fabriquer des brames minces ou des bandes d'acier

Country Status (3)

Country Link
EP (1) EP0745444B1 (fr)
AT (1) ATE188150T1 (fr)
DE (2) DE19519560A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3536413A1 (fr) 2018-03-05 2019-09-11 SMS Group GmbH Cage de laminoir pour un laminoir à chaud

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH489298A (de) * 1968-03-19 1970-04-30 Mannesmann Ag Flüssigkeitsgekühlte, aus Platten bestehende Stranggiesskokille
DE3640096C1 (en) * 1986-11-24 1988-04-28 Voest Alpine Ag Continuous casting mould
DE3643740A1 (de) * 1986-12-20 1988-06-30 Schloemann Siemag Ag Stahlstranggiesskokille
EP0326190A2 (fr) * 1987-04-13 1989-08-02 Thyssen Stahl Aktiengesellschaft Installation pour fabriquer un feuillard d'acier ayant une épaisseur située entre 2 et 25 mm
EP0363732A1 (fr) * 1988-10-10 1990-04-18 Sms Schloemann-Siemag Aktiengesellschaft Dispositif de démarrage dans une installation de coulée de bandes d'acier
US5322112A (en) * 1992-03-04 1994-06-21 Sumitomo Heavy Industries, Ltd. Casting-thickness variable mold for continuous casting
US5335716A (en) * 1991-08-01 1994-08-09 Nippon Steel Corporation Method for starting continuous casting in continuous slab casting and method for setting a dummy bar prior to the start of casting of continuous slab casting
EP0614714A1 (fr) * 1993-03-10 1994-09-14 Sms Schloemann-Siemag Aktiengesellschaft Machine pour la coulée continue de brames minces en acier
DE4337399A1 (de) * 1993-10-26 1995-04-27 Mannesmann Ag Stranggießkokille für die Erzeugung von dünnen Brammen, Platten oder Blechen aus Stahl

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH489298A (de) * 1968-03-19 1970-04-30 Mannesmann Ag Flüssigkeitsgekühlte, aus Platten bestehende Stranggiesskokille
DE3640096C1 (en) * 1986-11-24 1988-04-28 Voest Alpine Ag Continuous casting mould
DE3643740A1 (de) * 1986-12-20 1988-06-30 Schloemann Siemag Ag Stahlstranggiesskokille
EP0326190A2 (fr) * 1987-04-13 1989-08-02 Thyssen Stahl Aktiengesellschaft Installation pour fabriquer un feuillard d'acier ayant une épaisseur située entre 2 et 25 mm
EP0363732A1 (fr) * 1988-10-10 1990-04-18 Sms Schloemann-Siemag Aktiengesellschaft Dispositif de démarrage dans une installation de coulée de bandes d'acier
US5335716A (en) * 1991-08-01 1994-08-09 Nippon Steel Corporation Method for starting continuous casting in continuous slab casting and method for setting a dummy bar prior to the start of casting of continuous slab casting
US5322112A (en) * 1992-03-04 1994-06-21 Sumitomo Heavy Industries, Ltd. Casting-thickness variable mold for continuous casting
EP0614714A1 (fr) * 1993-03-10 1994-09-14 Sms Schloemann-Siemag Aktiengesellschaft Machine pour la coulée continue de brames minces en acier
DE4337399A1 (de) * 1993-10-26 1995-04-27 Mannesmann Ag Stranggießkokille für die Erzeugung von dünnen Brammen, Platten oder Blechen aus Stahl

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3536413A1 (fr) 2018-03-05 2019-09-11 SMS Group GmbH Cage de laminoir pour un laminoir à chaud

Also Published As

Publication number Publication date
DE19519560A1 (de) 1996-11-28
ATE188150T1 (de) 2000-01-15
DE59604007D1 (de) 2000-02-03
EP0745444B1 (fr) 1999-12-29

Similar Documents

Publication Publication Date Title
EP0326190B1 (fr) Installation pour fabriquer un feuillard d'acier ayant une épaisseur située entre 2 et 25 mm
WO1988001209A1 (fr) Procede et dispositif de coulee continue de brames
EP0535368A1 (fr) Procédé et dispositif de coulée continue d'un lingot métallique
AT392029B (de) Stranggiessanlage zum stranggiessen von stahl
AT410767B (de) Verfahren und vorrichtung zur kontinuierlichen herstellung eines gewalzten metallbandes aus einermetallschmelze
EP1071529B1 (fr) Procede pour la coulee continue de feuillards metalliques minces
EP0353402B1 (fr) Procédé de production d'une bande d'acier ayant une épaisseur de moins de 10 mm
EP1960136A1 (fr) Procede de coulee continue de minces feuillards metalliques et installation de coulee continue
EP0662357B1 (fr) Procédé et dispositif pour exercer une installation de coulée continue
AT402267B (de) Verfahren zum herstellen eines stranges in form eines metallbandes sowie einrichtung zur durchführung des verfahrens
EP0745444B1 (fr) Procédé et installation pour fabriquer des brames minces ou des bandes d'acier
EP1050355B1 (fr) Procédé pour la production d'un produit en acier coulé en continu
DE4234135C2 (de) Verfahren und Vorrichtung für das Horizontal-Stranggießen
EP1412110B1 (fr) Procede et dispositif de coulee continue verticale d'un feuillard d'acier
DE10057876C1 (de) Verfahren und Vorrichtung zur Herstellung von Warmband in einer Minihütte
EP1441871B1 (fr) Procede et machine de coulee permettant de fabriquer des barres de coulee sous forme de blocs ou de billettes
EP1539389B1 (fr) Procédé utilisant un dispositif d'enroulement pour l'obtention du bobinage séparé d'au moins deux longueurs individuelles de tubes extrudés simultanément
EP1381482B1 (fr) Procede et dispositif pour produire une matiere de base de coulee continue
DE4135214C2 (de) Verfahren und Anlage zur Herstellung von Stahlband
DE10114269C1 (de) Verfahren und Vorrichtung zur Herstellung von Warmband mittels Zweirollen-Dünnbandgießanlagen
AT524482B1 (de) Stranggießanlage und Verfahren zum Betrieb der Stranggießanlage
DE2034762A1 (en) Thin strip continuous casting - with thick length wise extending sections
DE4406012C2 (de) Vorrichtung zum Angießen einer Stranggießanlage
AT403020B (de) Verfahren und stranggiessanlage zum herstellen von strangmaterial aus stahl
DE1458013C (de) Verfahren und Vorrichtung zum konti nuierhchen Herstellen eines in mehrere Teilstrange zerlegbaren, profilierten Stahlstranges 4nm Concast 4G, Zurich (Schweiz)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19960524

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE FR GB IT

17Q First examination report despatched

Effective date: 19980122

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE FR GB IT

REF Corresponds to:

Ref document number: 188150

Country of ref document: AT

Date of ref document: 20000115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59604007

Country of ref document: DE

Date of ref document: 20000203

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN P. & C. S.N.C.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20000225

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: SMS DEMAG AG

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20020502

Year of fee payment: 7

Ref country code: AT

Payment date: 20020502

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020511

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20020513

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030507

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030507

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031202

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20030507

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040130

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050507