EP0980295B1 - Verfahren und vorrichtung zum erzeugen von brammen aus stahl - Google Patents

Verfahren und vorrichtung zum erzeugen von brammen aus stahl Download PDF

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Publication number
EP0980295B1
EP0980295B1 EP98932038A EP98932038A EP0980295B1 EP 0980295 B1 EP0980295 B1 EP 0980295B1 EP 98932038 A EP98932038 A EP 98932038A EP 98932038 A EP98932038 A EP 98932038A EP 0980295 B1 EP0980295 B1 EP 0980295B1
Authority
EP
European Patent Office
Prior art keywords
throat gap
adjusters
strand
gap
fact
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
EP98932038A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0980295A1 (de
Inventor
Horst Von Wyl
Ingo Schubert
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 Demag 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 Demag AG filed Critical SMS Demag AG
Publication of EP0980295A1 publication Critical patent/EP0980295A1/de
Application granted granted Critical
Publication of EP0980295B1 publication Critical patent/EP0980295B1/de
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
    • B22D11/12—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
    • 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
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • 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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/20—Controlling or regulating processes or operations for removing cast stock

Definitions

  • the invention relates to a method for producing slabs from steel, in which one strand is a mold with liquid melt enclosed by the strand shell leaves and in a downstream strand guide the mouth width of in scaffolding stored guide rollers through lower and upper frame connecting Adjusting elements is continuously adjusted, and an associated device for this.
  • DE 26 12 094 C2 describes a device for changing the distance from one another opposite frame or pair connected by tie rods Scaffolding parts of a strand guide are known, in which bushes are provided which Are rotatable with the help of pressure cylinders.
  • the movable frame parts are through Printing cylinder connected, being between the movable frame part and the interchangeable spacers for the purpose of setting a predeterminable Roller distance can be used.
  • the main aim of the subject of this patent is only sufficient contact pressure for apply the transport of the strand or adjust the mouth width.
  • the invention has set itself the goal of creating a method and a device with which the mouth width can be adjusted exactly over the entire strand guide with simple means and, moreover, the current position of the Let the bottom of the sump be determined within the slab. Furthermore, the device should be able to safely guide the cold strand with a simple structure.
  • the invention achieves the aim by the features of method claim 1 and Device claim 6.
  • an oscillation variable is selected that the dynamic influences on the relatively thin strand shell after leaving the mold negligibly small.
  • the amplitude of the oscillating jaw width is one size set, which prevents plastic deformation of the strand shell.
  • the current jaw width is recorded via displacement measuring elements and fed to a computer.
  • the actuating force of the adjusting elements for continuously changing the jaw width is determined and also fed to the computer.
  • the amplitude is monitored by means of a computer program and, as the amplitude of the actuating force increases, the jaw width is set to a predeterminable dimension and / or the jaw width of the guide rollers is guided in a pressure-controlled manner via at least one of the adjusting elements which continuously adjust the jaw width.
  • the amplitude of the actuating force is a measure of the solidification of the strand. That is, a relatively small amplitude of the actuating force is encountered when the Strand shell is still thin and a large liquid sump is present. The Amplitude reaches its greatest value when the strand is solidified.
  • the optimal jaw width in the Set the way that the oscillation detects whether the trend towards the larger one or to the smaller mouth width away from the optimal mouth width then occurs with counteract specific measures.
  • the actuating force F is in the form of the internal width s a hysteresis curve.
  • the deformation work of a segment during the stroke, i.e. the area within the hysteresis curve can be evaluated using evaluation software calculated and the strand consistency can be concluded.
  • the Overall, the hysteresis curve has a relatively small area when the shell is still thin and the swamp is relatively large.
  • the hysteresis curve shows a relatively large one Surface when the shell continues to grow and the sump volume decreases.
  • the Hysteresis takes a particularly slim form when the strand is complete is completely frozen.
  • the invention enables an optimization of the production performance in qualitative and achieved in quantitative terms, namely in terms of qualitative optimization through always optimally implemented soft reduction (locally, dynamic soft reduction) and in terms of quantitative optimization of production performance through the possibility of being able to make maximum use of the machine length at at the same time high operational reliability.
  • thermal tracking software in your Accuracy can be improved significantly.
  • FIG. 1 shows the diagram of a continuous casting plant with a mold 11, at the mouth of which a slab B emerges and is guided by stands 21.1 to 21.5.
  • the slab the strand shell of which gradually solidifies, there is a sump S up to a sump tip S s .
  • adjustment elements 31 are only shown in the framework 21.4.
  • a scaffold 21 which has an upper frame 22 and a lower frame 23, the adjustment elements 31 the mouth width between the guide rollers 24 arranged on them determine.
  • One of the guide rollers is a drive roller 25, whose function in the Figure 5 is described in more detail.
  • the adjustment elements have a tie rod 32, which is regularly in the subframe 23 is attached and has at its opposite end a piston 33 which in a cylinder 34 is guided.
  • the individual stands 21 have at least four Adjustment elements 31, the cylinders 34 of which are connected to an actuator 35.
  • the adjustment element 31 with a displacement measuring element equipped, which is connected to a displacement sensor, which metrologically connected to a computer.
  • the cylinder 34 has a pressure measuring element 43 equipped, which is connected to a pressure transducer 44, which is also on the computer is metrologically connected.
  • the computer 45 works in terms of control together with the actuator 35.
  • the actuator is connected to an oscillator.
  • the mouth width is plotted against time in the upper part of the picture.
  • the desired slab thickness (center line c) Width of mouth changed. In the present case it is a sine wave. But there are other forms of vibration possible and provided.
  • the positioning force F is plotted against time in the lower part of the picture. In the left part of the picture, the positioning force has a relatively small amplitude. Has in the right part the amplitude of the positioning force increases significantly.
  • the swamp of type ⁇ has a thin shell with one swamp less Viscosity, the type ⁇ a much thicker shell and at the same time a sump with high viscosity and the type ⁇ is completely solidified.
  • the image representations shown here show a uniform distribution of the hysteresis and thus the optimal mouth width once s ⁇ or also s ⁇ .
  • FIG. 5 shows a scaffold in three different operating states.
  • the Item numbers correspond to those already listed in the pictures above.
  • the upper part of the picture is the normal casting operation, with one on all cylinders Position control is carried out.
  • the scaffold entry is on Provided a drivable guide roller in the upper frame.
  • the operation is shown when the strand has solidified.
  • the im Area of the drivable guide roller arranged for the cylinder Adjustment elements are pressure-controlled and the cylinders shown downstream are position controlled.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Heat Treatment Of Steel (AREA)
  • Coating With Molten Metal (AREA)
  • Basic Packing Technique (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Metal Rolling (AREA)
EP98932038A 1997-05-07 1998-04-27 Verfahren und vorrichtung zum erzeugen von brammen aus stahl Expired - Lifetime EP0980295B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19720768 1997-05-07
DE19720768A DE19720768C1 (de) 1997-05-07 1997-05-07 Verfahren und Vorrichtung zum Erzeugen von Brammen aus Stahl
PCT/DE1998/001198 WO1998050185A1 (de) 1997-05-07 1998-04-27 Verfahren und vorrichtung zum erzeugen von brammen aus stahl

Publications (2)

Publication Number Publication Date
EP0980295A1 EP0980295A1 (de) 2000-02-23
EP0980295B1 true EP0980295B1 (de) 2001-10-17

Family

ID=7829787

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98932038A Expired - Lifetime EP0980295B1 (de) 1997-05-07 1998-04-27 Verfahren und vorrichtung zum erzeugen von brammen aus stahl

Country Status (10)

Country Link
US (1) US6701999B2 (ko)
EP (1) EP0980295B1 (ko)
KR (1) KR100531125B1 (ko)
AT (1) ATE206973T1 (ko)
AU (1) AU8209098A (ko)
BR (1) BR9809604A (ko)
DE (2) DE19720768C1 (ko)
ID (1) ID20520A (ko)
TW (1) TW404869B (ko)
WO (1) WO1998050185A1 (ko)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007006458A1 (de) 2007-02-05 2008-08-07 Sms Demag Ag Stranggießeinrichtung zum Erzeugen von Brammen aus Stahl
DE102009031651A1 (de) 2009-07-03 2011-01-05 Sms Siemag Aktiengesellschaft Verfahren zum Bestimmen der Lage der Sumpfspitze eines gegossenen Metallstrangs und Stranggießanlage
WO2011124466A1 (de) * 2010-04-09 2011-10-13 Sms Siemag Ag VERFAHREN UND VORRICHTUNG ZUM EINSTELLEN DER LAGE DER SUMPFSPITZE IN EINEM GIEßSTRANG

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19809807C2 (de) 1998-03-09 2003-03-27 Sms Demag Ag Anstellverfahren für ein Rollensegment einer Stranggießanlage
DE10039016B4 (de) * 2000-08-10 2010-02-25 Sms Siemag Aktiengesellschaft Verfahren zum Erzeugen von Brammen aus Stahl
DE10042079A1 (de) * 2000-08-26 2002-04-25 Sms Demag Ag Stranggießanlage mit Soft-Reduction-Strecke
DE10057160A1 (de) * 2000-11-16 2002-05-29 Sms Demag Ag Verfahren und Vorrichtung zum Herstellen von Dünnbrammen
AT409465B (de) * 2000-12-12 2002-08-26 Voest Alpine Ind Anlagen Verfahren zum einstellen eines giessspaltes an einer strangführung einer stranggiessanlage
DE10122118A1 (de) * 2001-05-07 2002-11-14 Sms Demag Ag Verfahren und Vorrichtung zum Stranggiessen von Blöcken, Brammen und Dünnbrammen
RU2302313C2 (ru) * 2002-02-22 2007-07-10 Смс Демаг Акциенгезелльшафт Способ и устройство для непрерывной разливки с непосредственным обжатием металлической заготовки, в частности стальной заготовки
DE10224533A1 (de) * 2002-05-31 2003-12-18 Sms Demag Ag Verfahren zur Ermittlung der Reibkraft bei einem erzwungenen Schwingungen ausgesetzten System
DE10349962B3 (de) * 2003-10-24 2005-06-02 Ingo Dr. Schubert Anordnung zur Ermittlung der Konsistenz eines Gießstranges in einer Stranggießalage und/oder Maulweite derselben
DE102004002783A1 (de) * 2004-01-20 2005-08-04 Sms Demag Ag Verfahren und Einrichtung zum Bestimmen der Lage der Sumpfspitze im Gießstrang beim Stranggießen von flüssigen Metallen, insbesondere von flüssigen Stahlwerkstoffen
DE102006016375B4 (de) 2006-04-05 2023-02-16 Sms Group Gmbh Verfahren und Einrichtung zum Bestimmen der Kernerstarrung und/oder der Sumpfspitze beim Stranggießen von Metallen, insbesondere von Stahlwerkstoffen
DE102007016045A1 (de) * 2007-03-30 2008-10-02 Sms Demag Ag Vorrichtung zum hydraulischen Anstellen von Bauteilen
DE102008015008B4 (de) * 2008-03-19 2024-02-01 Sms Group Gmbh Verfahren zum Betreiben einer Strangführungseinrichtung
JP5600929B2 (ja) * 2008-12-10 2014-10-08 Ｊｆｅスチール株式会社 連続鋳造鋳片の製造方法
DE102012009870A1 (de) * 2012-05-15 2013-11-21 Sms Siemag Ag Verfahren und Strangführung zur Beeinflussung der Erstarrung des teilweise noch flüssigen Kernes während des Stranggießens
CN103048242A (zh) * 2013-01-21 2013-04-17 中冶赛迪电气技术有限公司 连铸坯固相率和凝固末端的检测方法及检测装置
US10888920B2 (en) * 2016-12-08 2021-01-12 Aktiebolaget Skf Monitoring and control system for continuous casting machine
CN110303129B (zh) * 2019-06-26 2021-03-09 山东钢铁股份有限公司 一种宽厚板坯的制造方法
IT202200006581A1 (it) * 2022-04-04 2023-10-04 Danieli Off Mecc Segmento di un dispositivo di soft reduction per eseguire una soft reduction di bramme
CN114918393A (zh) * 2022-06-09 2022-08-19 吉林建龙钢铁有限责任公司 一种控制中、低碳钢结晶器液位周期性波动的方法

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
DE1213575B (de) * 1962-06-29 1966-03-31 Demag Ag Richtmaschine fuer Stranggiessanlagen
US3891025A (en) * 1972-06-29 1975-06-24 Schloemann Siemag Ag Apparatus for withdrawing a casting and feeding a dummy bar in a continuous casting machine for steel
US4030533A (en) * 1974-06-24 1977-06-21 Nippon Steel Corporation Continuous casting system
AT335649B (de) * 1975-03-25 1977-03-25 Voest Ag Strangfuhrung an einer stranggiessanlage
DE3106531A1 (de) * 1981-02-21 1982-09-09 SMS Schloemann-Siemag AG, 4000 Düsseldorf Treib- und richtmaschine fuer stranggiessanlagen
US4953614A (en) * 1987-04-09 1990-09-04 Herbert Lemper Modular continuous caster
US5152334A (en) * 1990-05-02 1992-10-06 Mesta International Guide roll assembly and method of guiding cast strand
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
DE4341719C2 (de) * 1993-12-03 2001-02-01 Mannesmann Ag Einrichtung zum Stranggießen von Stahl
US6044895A (en) * 1993-12-21 2000-04-04 Siemens Aktiengesellschaft Continuous casting and rolling system including control system
JP3008821B2 (ja) * 1994-07-29 2000-02-14 住友金属工業株式会社 薄鋳片の連続鋳造方法および装置
DE69615534T2 (de) * 1995-10-18 2002-05-02 Sumitomo Metal Ind Stranggiessverfahren und -anlage
EP0776708B1 (en) * 1995-11-28 1999-01-20 DANIELI & C. OFFICINE MECCANICHE S.p.A. Method for the controlled pre-rolling of thin slabs leaving a continuous casting plant

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007006458A1 (de) 2007-02-05 2008-08-07 Sms Demag Ag Stranggießeinrichtung zum Erzeugen von Brammen aus Stahl
DE102009031651A1 (de) 2009-07-03 2011-01-05 Sms Siemag Aktiengesellschaft Verfahren zum Bestimmen der Lage der Sumpfspitze eines gegossenen Metallstrangs und Stranggießanlage
WO2011000549A1 (de) 2009-07-03 2011-01-06 Sms Siemag Ag Verfahren zum bestimmen der lage der sumpfspitze eines gegossenen metallstrangs und stranggiessanlage
WO2011124466A1 (de) * 2010-04-09 2011-10-13 Sms Siemag Ag VERFAHREN UND VORRICHTUNG ZUM EINSTELLEN DER LAGE DER SUMPFSPITZE IN EINEM GIEßSTRANG

Also Published As

Publication number Publication date
EP0980295A1 (de) 2000-02-23
ATE206973T1 (de) 2001-11-15
AU8209098A (en) 1998-11-27
US20030145976A1 (en) 2003-08-07
US6701999B2 (en) 2004-03-09
ID20520A (id) 1999-01-07
DE19720768C1 (de) 1999-01-14
DE59801786D1 (de) 2001-11-22
KR100531125B1 (ko) 2005-11-24
TW404869B (en) 2000-09-11
WO1998050185A1 (de) 1998-11-12
BR9809604A (pt) 2000-10-03
KR20010012379A (ko) 2001-02-15

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