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EP0384151B1 - Installation for producing of steel band - Google Patents

Installation for producing of steel band Download PDF

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Publication number
EP0384151B1
EP0384151B1 EP90101546A EP90101546A EP0384151B1 EP 0384151 B1 EP0384151 B1 EP 0384151B1 EP 90101546 A EP90101546 A EP 90101546A EP 90101546 A EP90101546 A EP 90101546A EP 0384151 B1 EP0384151 B1 EP 0384151B1
Authority
EP
European Patent Office
Prior art keywords
steel strip
guide rollers
guide
plant according
steel
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
EP90101546A
Other languages
German (de)
French (fr)
Other versions
EP0384151A1 (en
Inventor
Hans Otto Thörner
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
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 filed Critical SMS Schloemann Siemag AG
Priority to AT90101546T priority Critical patent/ATE91647T1/en
Publication of EP0384151A1 publication Critical patent/EP0384151A1/en
Application granted granted Critical
Publication of EP0384151B1 publication Critical patent/EP0384151B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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 a system for producing steel strip, which consists of a steel strip casting mold, a set of rollers for pressing and welding together the strand shells that solidify on the steel strip broad sides, and guide rollers for diverting the steel strip to a horizontally arranged driving straightening device.
  • the known systems are complex and high-rise.
  • the relatively long steel belt guide causes energy and scaling losses, which can only be reduced through increased protection.
  • the object of the invention is to provide a simple, low-construction, reliable and maintenance-friendly system with which steel strips with a good structure and high surface quality can be produced.
  • more economical production is to be achieved by reducing energy and scaling losses.
  • the distance between the guide rollers and the surface of the press roller is greater than the thickness of the pressed steel strip. This limits the heat transfer from the steel strip to the press roll and prevents wear on the surface.
  • the radius of curvature of the guideway formed by the guide rollers is less than 800 mm.
  • a significant reduction in the heat of the steel strip on the press roller is achieved in that a heat shield is arranged between the press roller and the guide rollers above the top of the steel strip.
  • the heat shield is advantageously made of a cooled steel plate or a plate made of refractory material.
  • One method for operating the system according to the invention is that the retraction speed of the driving straightening device, which is regulated according to the outfeed speed of the press rolls, is corrected in the event of deviations of the steel strip from the desired position in the region of the guide rollers.
  • the system shown for the production of steel strip consists of the essential parts of steel strip casting mold 1, press rollers 2, 3, guide rollers 4, 5, 6 and driving straightening device 7.
  • the steel strip casting mold 1 which is expanded to accommodate a pouring tube 8, is provided with cooling tubes 10 in the walls 11 for cooling the cast steel 9.
  • a strand shell 13 that solidifies the liquid pouring sump 12 solidifies.
  • the strand shells 13 opposite on the wide format sides of the steel strip 14 are pressed and welded below the mold 1 by the press rollers 2, 3, thereby reducing the original casting format thickness to the press thickness d of the steel strip 14 is reduced.
  • the press roll 3 is stationary and the press roll 2 is adjustably mounted for setting the steel strip thickness d.
  • the steel strip 14 is guided directly below the pressing area 15 by the guide rollers 4, 5, 6 mounted on the foundation 16 around the bale underside of the pressing roller 3 to the drive leveling device 7.
  • Bearing 17 of the guide rollers 4, 5, 6 are adjusted in height by intermediate layers or adjusting devices 18 such that the distance of the guide rollers 4, 5, 6 from the surface of the press roller 3 is greater than the thickness d of the pressed steel strip 14 , that the steel band 14 below the press area 15 lifts off the surface of the press roll 3, thus avoiding excessive heating of the same by contact and wear.
  • a heat shield 19 is arranged between the latter and the press roller 3.
  • the heat shield 19 can be formed either from refractory material or from steel plates cooled inside or outside.
  • the described one-sided steel strip guide requires constant contact of the steel strip 14 on the guide rollers 4, 5, 6.
  • spacers 20 are therefore arranged between the guide rollers 4, 5, 6. Since the curve of the steel strip 14 is dependent on the ratio of the feed speed V 7 of the driving straightening device 7 to the press rolling speed V 2, 3, a position error of the steel strip determined by a processor 21 can trigger a signal for correcting the drive control 22 of the driving straightening device 7. This principle is illustrated in Fig. 2.
  • a cross-section shear 23 for the steel strip 14 and a temperature compensation furnace 24 for setting a homogeneous rolling temperature are arranged downstream of the system described.
  • the known rolling mills can be used for rolling out.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)

Abstract

An installation for producing steel band comprises a steel-band casting mould (1), a set (2, 3) of rolls for compressing and welding together the strand shells solidifying at the broad sides of the band, and guide rolls (4, 5, 6) for diverting the steel band to a horizontally arranged driving and straightening device (7). To create a simple installation which has a low overall height and is operationally reliable, for the economical production of high-quality steel band, the guide rollers (4, 5, 6) form a unilateral guide track extending with a clearance around a pressing roll (3) and towards the driving and straightening device (7). <IMAGE>

Description

Die Erfindung betrifft eine Anlage zur Herstellung von Stahlband, die aus einer Stahlbandgießkokille, einem Walzensatz zum Zusammenpressen und Verschweissen der an den Stahlbandbreitseiten erstarrenden Strangschalen und Führungsrollen zur Umleitung des Stahlbandes zu einer horizontal angeordneten Treibrichteinrichtung besteht.The invention relates to a system for producing steel strip, which consists of a steel strip casting mold, a set of rollers for pressing and welding together the strand shells that solidify on the steel strip broad sides, and guide rollers for diverting the steel strip to a horizontally arranged driving straightening device.

Bei dieser durch die EP-A1 286 862 bekannt gewordenen Anlage wird das kontinuierlich gegossene und gepresste Stahlband unterhalb des Presswalzenpaares durch eine vertikale Kühlstrecke und im Bogen angeordnete Biege- und Führungsrollen in die Horizontale umgeleitet. Am Ende der Umleitungsbahn befindet sich eine Treib- und Richteinrichtung. Das Stahlband wird anschliessend in einem Ausgleichofen auf homogene Walztemperatur eingestellt und danach einem Fertigwalzwerk zugeführt.In this system, which has become known from EP-A1 286 862, the continuously cast and pressed steel strip below the pair of press rollers is diverted into the horizontal through a vertical cooling section and bending and guide rollers arranged in an arc. At the end of the diversion path there is a drive and straightening device. The steel strip is then set to a homogeneous rolling temperature in a compensating furnace and then fed to a finishing mill.

Die bekannten Anlagen sind aufwendig und hochbauend. Die relativ lange Stahlbandführung bedingt Energie- und Verzunderungsverluste, die nur durch erhöhten Schutzaufwand zu reduzieren sind.The known systems are complex and high-rise. The relatively long steel belt guide causes energy and scaling losses, which can only be reduced through increased protection.

Aufgabe der Erfindung ist die Schaffung einer einfachen, niedrigbauenden, betriebssicheren und wartungsfreundlichen Anlage, mit der Stahlband mit gutem Gefüge und hoher Oberflächengüte hergestellt werden kann. Darüber hinaus soll eine wirtschaftlichere Herstellung durch Verringerung von Energie- und Verzunderungsverlusten erreicht werden.The object of the invention is to provide a simple, low-construction, reliable and maintenance-friendly system with which steel strips with a good structure and high surface quality can be produced. In addition, more economical production is to be achieved by reducing energy and scaling losses.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.This object is achieved by the features of claim 1.

Dadurch wird eine kostengünstige und betriebssichere Anlage zur wirtschaftlichen Herstellung von Stahlband mit gutem Gefüge und rißfreier Oberfläche bei geringen Verzunderungsverlusten geschaffen.This creates a cost-effective and reliable system for the economical production of steel strip with a good structure and crack-free surface with low scaling losses.

Der Abstand der Führungsrollen von der Oberfläche der Presswalze ist größer als die Dicke des gepressten Stahlbandes. Dadurch wird die Wärmeübertragung vom Stahlband zur Presswalze begrenzt und ein Verschleiß der Oberfläche vermieden.The distance between the guide rollers and the surface of the press roller is greater than the thickness of the pressed steel strip. This limits the heat transfer from the steel strip to the press roll and prevents wear on the surface.

Gemäß einem weiteren Merkmal der Erfindung ist der Krümmungsradius der von den Führungsrollen gebildeten Führungsbahn kleiner als 800 mm.According to a further feature of the invention, the radius of curvature of the guideway formed by the guide rollers is less than 800 mm.

Eine erhebliche Verminderung der Hitzeeinwirkung des Stahlbandes auf die Presswalze wird dadurch erreicht, daß zwischen der Presswalze und den Führungsrollen oberhalb der Stahlbandoberseite ein Hitzeschild angeordnet ist. Der Hitzeschild ist vorteilhaft aus einer gekühlten Stahlplatte oder einer Platte aus feuerfestem Material gestaltet.A significant reduction in the heat of the steel strip on the press roller is achieved in that a heat shield is arranged between the press roller and the guide rollers above the top of the steel strip. The heat shield is advantageously made of a cooled steel plate or a plate made of refractory material.

Ein Verfahren zum Betrieb der erfindungsgemäßen Anlage besteht darin, daß die nach der Ausfördergeschwindigkeit der Presswalzen geregelte Einzugsgeschwindigkeit der Treibrichteinrichtung bei Abweichungen des Stahlbandes von der Soll-Lage im Bereich der Führungsrollen korrigiert wird.One method for operating the system according to the invention is that the retraction speed of the driving straightening device, which is regulated according to the outfeed speed of the press rolls, is corrected in the event of deviations of the steel strip from the desired position in the region of the guide rollers.

In der Zeichnung ist ein Ausführungsbeispiel mit Merkmalen der Erfindung dargestellt. Es zeigen

Fig. 1
eine Anlage zur Herstellung von Stahlband
und
Fig. 2
im Prinzip die Antriebsregelung für den Treibrichter.
In the drawing, an embodiment is shown with features of the invention. Show it
Fig. 1
a plant for the production of steel strip
and
Fig. 2
basically the drive control for the driver judge.

Die dargestellte Anlage zur Herstellung von Stahlband, besteht aus den wesentlichen Teilen Stahlbandgießkokille 1, Presswalzen 2, 3, Führungsrollen 4, 5, 6 und Treibrichteinrichtung 7.The system shown for the production of steel strip consists of the essential parts of steel strip casting mold 1, press rollers 2, 3, guide rollers 4, 5, 6 and driving straightening device 7.

Die zur Aufnahme eines Gießrohres 8 nach oben erweiterte Stahlbandgießkokille 1 ist zur Kühlung des eingegossenen Stahles 9 mit Kühlrohren 10 in den Wandungen 11 versehen. An den Wandungen 11 der Kokille 1 erstarrt eine den flüssigen Gießsumpf 12 umschließende Strangschale 13. Die an den Formatbreitseiten des Stahlbandes 14 gegenüberliegenden Strangschalen 13 werden unterhalb der Kokille 1 durch die Presswalzen 2, 3 zusammengepresst und verschweisst, wodurch die ursprüngliche Gießformatdicke auf die Pressdicke d des Stahlbandes 14 reduziert wird. Die Presswalze 3 ist ortsfest und die Presswalze 2 ist zur Einstellung der Stahlbanddicke d anstellbar gelagert.The steel strip casting mold 1, which is expanded to accommodate a pouring tube 8, is provided with cooling tubes 10 in the walls 11 for cooling the cast steel 9. On the walls 11 of the mold 1, a strand shell 13 that solidifies the liquid pouring sump 12 solidifies. The strand shells 13 opposite on the wide format sides of the steel strip 14 are pressed and welded below the mold 1 by the press rollers 2, 3, thereby reducing the original casting format thickness to the press thickness d of the steel strip 14 is reduced. The press roll 3 is stationary and the press roll 2 is adjustably mounted for setting the steel strip thickness d.

Das Stahlband 14 wird unmittelbar unterhalb des Pressbereichs 15 durch die am Fundament 16 gelagerten Führungsrollen 4, 5, 6 um die Ballenunterseite der Presswalze 3 herum zur Treibrichteinrichtung 7 geführt. Lager 17 der Führungsrollen 4, 5, 6 sind durch Zwischenlagen oder Verstelleinrichtungen 18 derart in der Höhe eingestellt, daß der Abstand der Führungsrollen 4, 5, 6 zur Oberfläche der Presswalze 3 größer ist als die Dicke d des gepressten Stahlbandes 14. Dadurch wird erreicht, daß das Stahlband 14 unterhalb des Pressbereichs 15 von der Oberfläche der Presswalze 3 abhebt und so eine zu starke Aufheizung derselben durch Kontakt und Verschleiß vermieden wird. Als zusätzlicher Schutz vor der Strahlungshitze des Stahlbandes 14 ist zwischen diesem und der Presswalze 3 ein Hitzeschild 19 angeordnet. Der Hitzeschild 19 kann entweder aus feuerfestem Material oder aus innen oder außen gekühlten Stahlplatten gebildet sein.The steel strip 14 is guided directly below the pressing area 15 by the guide rollers 4, 5, 6 mounted on the foundation 16 around the bale underside of the pressing roller 3 to the drive leveling device 7. Bearing 17 of the guide rollers 4, 5, 6 are adjusted in height by intermediate layers or adjusting devices 18 such that the distance of the guide rollers 4, 5, 6 from the surface of the press roller 3 is greater than the thickness d of the pressed steel strip 14 , that the steel band 14 below the press area 15 lifts off the surface of the press roll 3, thus avoiding excessive heating of the same by contact and wear. As additional protection against the radiation heat of the steel strip 14, a heat shield 19 is arranged between the latter and the press roller 3. The heat shield 19 can be formed either from refractory material or from steel plates cooled inside or outside.

Die beschriebene einseitige Stahlbandführung bedingt einen ständigen Führungskontakt des Stahlbandes 14 an den Führungsrollen 4, 5, 6. Zur Lageerfassung des Stahlbandes 14 im Führungsbogen sind daher zwischen den Führungsrollen 4, 5, 6 Abstandsgeber 20 angeordnet. Da der Bogenverlauf des Stahlbandes 14 vom Verhältnis der Einzugsgeschwindigkeit V 7 der Treibrichteinrichtung 7 zur Presswalzgeschwindigkeit V 2, 3 abhängig ist, kann ein durch einen Prozessor 21 ermittelter Lagefehler des Stahlbandes ein Signal zur Korrektur der Antriebsregelung 22 der Treibrichteinrichtung 7 auslösen. Dies Prinzip ist in Fig. 2 verdeutlicht.The described one-sided steel strip guide requires constant contact of the steel strip 14 on the guide rollers 4, 5, 6. For position detection of the steel strip 14 in the guide bend, spacers 20 are therefore arranged between the guide rollers 4, 5, 6. Since the curve of the steel strip 14 is dependent on the ratio of the feed speed V 7 of the driving straightening device 7 to the press rolling speed V 2, 3, a position error of the steel strip determined by a processor 21 can trigger a signal for correcting the drive control 22 of the driving straightening device 7. This principle is illustrated in Fig. 2.

Der beschriebenen Anlage ist eine Querteilschere 23 für das Stahlband 14 und zur Einstellung einer homogenen Walztemperatur ein Temperaturausgleichofen 24 nachgeordnet. Zur Auswalzung sind die bekannten Walzwerke einsetzbar.A cross-section shear 23 for the steel strip 14 and a temperature compensation furnace 24 for setting a homogeneous rolling temperature are arranged downstream of the system described. The known rolling mills can be used for rolling out.

Claims (6)

  1. Plant for the production of steel strip, which consists of a steel strip casting chill mould (1), a roll set (2, 3) for the pressing together and fusing of the strand skins (13) hardening at the strip major faces and guide rollers (4, 5, 6) for diversion of the steel strip (14) to a horizontally arranged directional driving equipment (7), characterised thereby that the guide rollers (4, 5, 6) are mounted directly below the pressing region (15) of the press rolls (2, 3) in the manner of a quadrant of a circle around the surface underside of one press roll (3) at a spacing thereto, wherein the spacing is greater than the thickness of the steel strip (14), and form a guide path running towards the drive equipment (7).
  2. Plant according to claim 1, characterised thereby that the radius of curvature of the guide path formed by the guide rolls (4, 5, 6) is smaller than 800 millimetres.
  3. Plant according to claims 1 and 2, characterised thereby that a heat shield (19) is arranged between the press roll (3) and the guide rollers (4, 5, 6).
  4. Plant according to claim 3, characterised thereby that the heat shield (19) is a cooled steel plate.
  5. Plant according to claim 1, characterised thereby that spacing transmitters (20) for detection of the position of the steel strip (14) are arranged between the guide rollers (4, 5, 6).
  6. Method for the operation of a plant according to one or more of claims 1 to 5, characterised thereby that the intake speed, which is regulated according to the extraction speed of the press rolls (2, 3), is corrected when deviations of the steel strip (14) from the target position at the guide rollers (4, 5, 6) occur.
EP90101546A 1989-02-18 1990-01-26 Installation for producing of steel band Expired - Lifetime EP0384151B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90101546T ATE91647T1 (en) 1989-02-18 1990-01-26 STEEL STRIP MANUFACTURING PLANT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3904989 1989-02-18
DE3904989A DE3904989A1 (en) 1989-02-18 1989-02-18 PLANT FOR THE PRODUCTION OF STEEL STRIP

Publications (2)

Publication Number Publication Date
EP0384151A1 EP0384151A1 (en) 1990-08-29
EP0384151B1 true EP0384151B1 (en) 1993-07-21

Family

ID=6374399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90101546A Expired - Lifetime EP0384151B1 (en) 1989-02-18 1990-01-26 Installation for producing of steel band

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EP (1) EP0384151B1 (en)
AT (1) ATE91647T1 (en)
DE (2) DE3904989A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4317262C2 (en) * 1993-05-24 1997-02-20 Rexroth Mannesmann Gmbh Continuous caster
WO1995015233A1 (en) * 1993-12-01 1995-06-08 Siemens Aktiengesellschaft Continuous casting and rolling plant for steel strip, and a control system for such a plant
US6044895A (en) * 1993-12-21 2000-04-04 Siemens Aktiengesellschaft Continuous casting and rolling system including control system
AU2783795A (en) * 1994-07-08 1996-02-09 Ipsco Inc. Twin-roll caster and rolling mill for use therewith

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0371281A1 (en) * 1988-11-26 1990-06-06 Sms Schloemann-Siemag Aktiengesellschaft Apparatus for producing hot-rolled steel strip

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3411734A1 (en) * 1984-03-30 1985-11-14 Badische Stahlwerke Ag Apparatus for the continuous casting and rolling of metals, in particular steel
ES2031945T3 (en) * 1987-04-13 1993-01-01 Thyssen Stahl Aktiengesellschaft PROCEDURE FOR THE MANUFACTURE OF A STEEL TAPE.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0371281A1 (en) * 1988-11-26 1990-06-06 Sms Schloemann-Siemag Aktiengesellschaft Apparatus for producing hot-rolled steel strip

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN Band 6, nr. 150 (M-148)(1028), 10, August 1982 & JP-A-57 68205 (HITACHI SEISAKUSHO K.K.). *
PATENT ABSTRACTS OF JAPAN Band 9, nr. 158 (M-393)(1881), 3 Juli 1985 ; & JP-A-60 33804 (SHIN NIPPON SEITETSU K.K.). *

Also Published As

Publication number Publication date
DE3904989A1 (en) 1990-08-23
EP0384151A1 (en) 1990-08-29
ATE91647T1 (en) 1993-08-15
DE59001986D1 (en) 1993-08-26

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