EP0539784B1 - Vorrichtung zum geregelten Vorwalzen von aus einer Stranggiessanlage austretenden Dünnbrammen - Google Patents

Vorrichtung zum geregelten Vorwalzen von aus einer Stranggiessanlage austretenden Dünnbrammen Download PDF

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Publication number
EP0539784B1
EP0539784B1 EP92117271A EP92117271A EP0539784B1 EP 0539784 B1 EP0539784 B1 EP 0539784B1 EP 92117271 A EP92117271 A EP 92117271A EP 92117271 A EP92117271 A EP 92117271A EP 0539784 B1 EP0539784 B1 EP 0539784B1
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EP
European Patent Office
Prior art keywords
rolls
rolling
assembly
continuous casting
sector parts
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.)
Expired - Lifetime
Application number
EP92117271A
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English (en)
French (fr)
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EP0539784A1 (de
EP0539784B2 (de
Inventor
Bruno Di Giusto
Fulvio Fasano
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.)
Danieli and C Officine Meccaniche SpA
Original Assignee
Danieli and C Officine Meccaniche SpA
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 Danieli and C Officine Meccaniche SpA filed Critical Danieli and C Officine Meccaniche SpA
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Publication of EP0539784B1 publication Critical patent/EP0539784B1/de
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Publication of EP0539784B2 publication Critical patent/EP0539784B2/de
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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
    • B22D11/12—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B21B37/62—Roll-force control; Roll-gap control by control of a hydraulic adjusting device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2201/00—Special rolling modes
    • B21B2201/14—Soft reduction

Definitions

  • This invention concerns an assembly for the controlled pre-rolling of thin slabs leaving a continuous casting plant, as set forth in the main claim.
  • the invention concerns an assembly located immediately downstream of the foot rolls of an ingot mould for the continuous casting of thin slabs.
  • This assembly performs a controlled pre-rolling operation on thin slabs leaving the mould.
  • thin slabs are meant here slabs with a width ranging from 1200 to 2500 mm. or more and a thickness between 25 and 70 mm.
  • pre-rolling assemblies comprise mechanical regulation systems with pre-regulation at the beginning of a casting cycle.
  • These assemblies are associated with continuous pre-rolling rolls, or rolls consisting of segments, or assemblies of rolls, or else assemblies of endless pressure belts positioned on rolls.
  • JP-A-62130759 teaches the provision of a straightening assembly placed in a position distant from the continuous casting mould so as to process a slab or billet which no longer contains a liquid core.
  • the straightening action on a slab which does not have a liquid core is different from the pre-rolling action and requires great forces and strong complex structures to carry out an effective, useful action.
  • the prior document JP-A-1-271.047 includes reducing the thickness of the slab independently of whether there is a liquid core or not, and independently of the closing position of the liquid core.
  • the pre-rolling rolls are positioned downstream of the mould and immediately downstream of the foot rolls.
  • pre-rolling rolls work and act on thin slabs which still contain a liquid core, and exploit the plastic condition arising from the temperature of the peripheral skin and the inclusion of the liquid core.
  • the pre-rolling rolls positioned on the outer curved side, or extrados side are associated with load cells which control the pressure that the thin slab exerts on the rolls.
  • the pre-rolling rolls positioned on the inner curved side, or intrados side, are associated with hydraulic capsules, for instance of the type disclosed in EP-0444420.
  • a transducer indicating pressure and position is included with the hydraulic capsule.
  • the inner curved side and outer curved side may each include a stationary part and movable part which cooperate respectively with a movable part and stationary part of the other side.
  • the whole assembly is governed by a control and data processing unit, which receives signals from the load cells and transducers and compares them with the rolling parameters, whether the latter be identified parameter by parameter or all the parameters, and thereby obtains information for the control and possible necessary regulation.
  • rolls are meant continuous rolls, or rolls consisting of individual segments, or endless belts supported on rolls, etc., thus covering any known system.
  • the regulation achieved is individual for each assembly of rolls or is general for the whole pre-rolling assembly.
  • the regulations may be added up algebraically.
  • a pre-rolling assembly 10 of which only a segment is shown in Fig.1, is positioned immediately downstream of foot rolls 12 associated with a mould 11 which produces a thin slab 20 continuously.
  • the rolls shown may be continuous rolls or may consist of segments of rolls 14-16 or be grouped in twos or more 114-116 or may support an endless belt 214-216 or be of yet another known type.
  • the rolls 14-114-214 and the other known rolls of the variants of the outer curved sector 13 are associated individually or in groups with at least one load cell 15, which transmits signals to a control and data processing unit 21.
  • the rolls 16-116-216 and the other known rolls of the variants of the inner curved sector 22 are associated individually or in groups with at least one hydraulic capsule 17.
  • the hydraulic capsule 17 is governed by a servovalve 19 and is associated with a transducer 18 which indicates the position and pressure.
  • the servovalves 19 are governed by the control and data processing unit 21.
  • Each pressure and position transducer 18 transmits its signal to the control and data processing unit 21 and may receive control and verification signals.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Paper (AREA)
  • Continuous Casting (AREA)
  • Crushing And Grinding (AREA)

Claims (3)

  1. Vorwalzanordnung zum gesteuerten Vorwalzen dünner Brammen (20), die eine Form (11) für kontinuierliches Gießen mit Fußwalzen (12) verlassen, wobei die Anordnung folgendes aufweist: zugewandte Walzsektoren mit stationären Sektorteilen (13) und mit diesen zusammenwirkenden beweglichen Sektorteilen (22), wobei die Walzsektoren funktionsmäßig entlang den zwei breiten Flächen der dünnen Brammen angeordnet sind und sie jeweilige vorwalzende Walzen (14, 114, 214 - 16, 116, 216) enthalten, dadurch gekennzeichnet, dass sie stromabwärts bezüglich der Fußwalzen (12) angeordnet ist und den Walzen (14, 114, 214) der stationären sektorteile (13) mindestens einzeln eine Belastungszelle (15) zugeordnet ist, während den Walzen (16, 116, 216) der beweglichen Sektortelle (22) mindestens einzeln ein durch ein Regelventil (19) gesteuerter Hydraulikbaustein (17) zugeordnet ist, wobei jeweils ein den Druck und die Position anzeigender Wandler (18) zugeordnet ist.
  2. Vorwalzanordnung nach Anspruch 1, bei der die Belastungszellen (15), die Regelventile (19) und die Druck- und Positionswandler (18) einer Steuerungs- und Datenverarbeitungseinheit (21) zugeordnet sind, die eine Einrichtung zum Einfügen/Eingeben von Vorwalzparametern und den Eigenschaften des flüssigen Kerns aufweist.
  3. Vorwalzanordnung nach Anspruch 1 oder Anspruch 2 zum gekrümmten, kontinuierlichen Gießen, bei der die stationären Sektorteile (13) an der nach außen gekrümmten Seite, oder der Außenwölbungsseite, der dünnen Bramme liegen.
EP92117271A 1991-10-31 1992-10-09 Vorrichtung zum geregelten Vorwalzen von aus einer Stranggiessanlage austretenden Dünnbrammen Expired - Lifetime EP0539784B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUD910184A IT1252847B (it) 1991-10-31 1991-10-31 Gruppo di prelaminazione controllata per bramme sottili uscenti da colata continua
ITUD910184 1991-10-31

Publications (3)

Publication Number Publication Date
EP0539784A1 EP0539784A1 (de) 1993-05-05
EP0539784B1 true EP0539784B1 (de) 1998-01-07
EP0539784B2 EP0539784B2 (de) 2004-01-07

Family

ID=11420941

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92117271A Expired - Lifetime EP0539784B2 (de) 1991-10-31 1992-10-09 Vorrichtung zum geregelten Vorwalzen von aus einer Stranggiessanlage austretenden Dünnbrammen

Country Status (5)

Country Link
EP (1) EP0539784B2 (de)
AT (1) ATE161761T1 (de)
DE (1) DE69223917T3 (de)
ES (1) ES2111030T3 (de)
IT (1) IT1252847B (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5488987A (en) * 1991-10-31 1996-02-06 Danieli & C. Officine Meccaniche Spa Method for the controlled pre-rolling of thin slabs leaving a continuous casting plant, and relative device
IT1262116B (it) * 1993-05-17 1996-06-19 Danieli Off Mecc Procedimento di prelaminazione controllata per bramme sottili uscenti da colata continua e dispositivo relativo
DE4338805C2 (de) * 1993-11-12 1995-10-26 Schloemann Siemag Ag Verfahren und Vorrichtung zum Betreiben einer Stranggießanlage
TW297788B (de) * 1994-12-15 1997-02-11 Sumitomo Metal Ind
IT1280171B1 (it) * 1995-05-18 1998-01-05 Danieli Off Mecc Linea di colata verticale per bramme
DE69601409T2 (de) * 1995-11-28 1999-09-02 Danieli & C. Officine Meccaniche S.P.A. Verfahren und Vorrichtung zum geregelten Vorwalzen von aus einer Stranggiessanlage austretenden Dünnbramme
DE19817034A1 (de) * 1998-04-17 1999-10-21 Schloemann Siemag Ag Verfahren und Vorrichtung zum Stranggießen von dünnen Metallbändern
DE102006027066A1 (de) 2006-06-10 2007-12-13 Sms Demag Ag Vorrichtung und Verfahren zum Führen eines Bandes
DE102009031651A1 (de) * 2009-07-03 2011-01-05 Sms Siemag Aktiengesellschaft Verfahren zum Bestimmen der Lage der Sumpfspitze eines gegossenen Metallstrangs und Stranggießanlage
CN107138700A (zh) * 2017-04-01 2017-09-08 河钢股份有限公司承德分公司 一种无位移传感器连铸机扇形段控制的方法
DE102017109713A1 (de) 2017-05-05 2018-11-08 Data M Sheet Metal Solutions Gmbh Rollformanlage mit Sensor-Rollformgerüst

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62130759A (ja) * 1985-12-02 1987-06-13 Sumitomo Metal Ind Ltd 連続鋳造鋳片の矯正ロ−ル制御方法
JPS62263854A (ja) † 1986-05-12 1987-11-16 Kawasaki Steel Corp 連鋳鋳片終端からの溶鋼吹出防止方法
JPS63242452A (ja) † 1987-03-30 1988-10-07 Nkk Corp 軽圧下鋳造方法
JPS63278655A (ja) * 1987-05-12 1988-11-16 Nkk Corp 軽圧下鋳造方法
JPH01271047A (ja) * 1988-04-20 1989-10-30 Sumitomo Metal Ind Ltd 連続鋳造機における軽圧下方法
DE3907905C2 (de) * 1988-07-04 1999-01-21 Mannesmann Ag Stranggießverfahren
IT1244295B (it) * 1990-07-09 1994-07-08 Giovanni Arvedi Processo ed impianto per l'ottenimento di nastri di acciaio avvolti, aventi caratteristiche di laminati a freddo ottenuti direttamente in linea di laminazione a caldo

Also Published As

Publication number Publication date
DE69223917D1 (de) 1998-02-12
DE69223917T2 (de) 1998-08-27
ES2111030T3 (es) 1998-03-01
ITUD910184A1 (it) 1993-05-01
DE69223917T3 (de) 2004-07-22
ITUD910184A0 (it) 1991-10-31
ATE161761T1 (de) 1998-01-15
IT1252847B (it) 1995-06-28
EP0539784A1 (de) 1993-05-05
EP0539784B2 (de) 2004-01-07

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