EP0834364A2 - Méthode et dispositif pour des machines de coulée continue à haute vitesse avec réduction d'épaisseur pendant la solidification - Google Patents

Méthode et dispositif pour des machines de coulée continue à haute vitesse avec réduction d'épaisseur pendant la solidification Download PDF

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Publication number
EP0834364A2
EP0834364A2 EP97116428A EP97116428A EP0834364A2 EP 0834364 A2 EP0834364 A2 EP 0834364A2 EP 97116428 A EP97116428 A EP 97116428A EP 97116428 A EP97116428 A EP 97116428A EP 0834364 A2 EP0834364 A2 EP 0834364A2
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EP
European Patent Office
Prior art keywords
strand
reduction
thickness
segment
casting
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
EP97116428A
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German (de)
English (en)
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EP0834364A3 (fr
EP0834364B1 (fr
Inventor
Fritz-Peter Prof. Dr. Pleschiutschnigg
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
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Publication of EP0834364A2 publication Critical patent/EP0834364A2/fr
Publication of EP0834364A3 publication Critical patent/EP0834364A3/fr
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Publication of EP0834364B1 publication Critical patent/EP0834364B1/fr
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

Definitions

  • the invention relates to a method and an apparatus for Continuous caster for the production of strands, their cross section is reduced during solidification.
  • the strands on such high speed equipment generally with a solidification thickness between 18 and 450 mm and casting speeds up to a maximum of 12 m / min e.g. on plants for casting slabs, blooms and sticks with a square or round profile, one of which Reduction of the strand cross-section, preferably in the thickness direction made after it emerged from the mold during solidification becomes.
  • So z. B a thin slab with a thickness of, for example, 65 to 40 mm in segment 0, which is located directly under the mold, reduced.
  • This strand thickness reduction by 25 mm or 38.5% can qualitatively disadvantageous for certain steel grades sensitive to internal cracks be.
  • the inner strand deformation can be caused by the Strand thickness reduction or also called casting rolls, for the trigger of internal cracks because of the critical deformation of the material liquid / solid on the inner strand shell, but also on the outer Strand shell is exceeded.
  • This example is based on a 2 m long arc segment 0, that no bending work or bending deformation in the strand shell brings in.
  • the forming speed of the strand shell when Casting rolls during solidification which is a measure of the strand deformation represents 1.25 mm / s with a casting speed of 6 m / min. This value of the forming speed increases with a casting speed increase to z. B. 10 m / min to 2.08 mm / s, which makes it very critical.
  • Such alone internal deformation caused by the casting rolling not just for the deep-drawn steel grades, which are relatively insensitive against internal information, but especially for sensitive ones Steels like microalloyed APX - 80 grades critical.
  • the deformation caused by casting rolling can also in vertical turning systems, where normally in Segment under the mold also bends the strand takes place, still by the bending deformation introduced into the strand greatly exaggerate, increasing the risk of exceeding the critical deformation and thus the crack formation increased again becomes.
  • the description of the invention is based on an example Thin slab with a thickness of 100 mm at the mold outlet and a solidification thickness of 80 mm.
  • the invention now proposes one Type of distribution and implementation of strand thickness reduction during the solidification of the thin slab in the strand guide frame for the exemplary casting speeds of 6 and 10 m / min before.
  • Tables 1 and 1.1 are the essential process and device data contrasted the invention with the prior art.
  • Table 1 provides the data for casting speeds of 6 m / min and Table 1.1 for speeds of 10 m / min represents.
  • FIGS 1 to 7 illustrate the invention in detail in comparison the state of the art.
  • the pure melting phase or penetration zone is in the range of segment 0, in which a strand thickness reduction or casting rolling of 2 x 10 mm or 20 mm and no more in the following segments 1 to 13, - Description of the state of the art (Image 1) -, or of 2 x 5 mm or 10 mm, casting rolls, and another 10 mm in the following segments 1 to 13, "soft reduction", part of the invention (Photo 2).
  • the reduction in strand thickness in the segment 0, the z. B. as pliers segment with two clamping devices, e.g. B. hydraulic cylinders (14), formed at the segment exit is linear over a length of 3 m; the reduction in the area of segments 1 - 13, but also across all segments, both linear and non-linear, i.e. for example following a square root.
  • the strand thickness reduction of 10 mm in the segments 1-13 "soft reduction" - linear distribution.
  • FIG. 4 schematically represents the situation of a Strands with a thickness in the mold of 100 mm and a solidification thickness of 80 mm for the casting speeds VG of 6 m / min, Figure 3, and of 10 m / min, Figure 4 compared.
  • the strand thickness reduction is 6 m / min from Z. B. 10 mm in segment 0 and of the remaining 10 mm in the Segments 1 to 8, corresponding to the shorter solidification path, performed. So the lowest liquidus point (1.2) is at already about 1.8 m and the swamp tip (2.2) at about 18.12 m.
  • the picture 4 in Figure 4 shows the situation of the strand like Figure 2 in Figure 1 at a casting speed of VG 10 m / min.
  • FIG. 5 shows the effect of a distribution of the strand thickness reduction in segment 0 and in segments 1 to 13 in the sense of Invention ( Figure 6) using the example of a vertical bending machine, FIG. 6, compared to the prior art (FIG. 5), on the inner strand deformation, caused by the bending deformations and the strand thickness reduction, depending on the strand guide for the maximum casting speed of, for example, 10 m / min shown.
  • Vg-10 maximum casting speed
  • the strand undergoes a further increase in the internal deformation (D) due to the deformation (DR) when it bends back in segment 4 from the inner circular arc into the horizontal, which, however, cannot become critical since the number of back bending points at design the system is selected so that the rebending process at maximum casting speed cannot trigger any critical internal deformation in the strand shell of the most crack-sensitive steel grade.
  • D internal deformation
  • DR deformation
  • Figure 6 in Figure 5 shows the procedural features the invention using the example of a vertical turning system, Figure 6, schematically.
  • the inner deformation (D) of the strand shell (3) is never in a moment of solidification, H. from the mold exit critical to the end of scaffold 13. This is due to the distribution the total strand thickness reduction from 20 mm to, for example 10 mm in segment 0 (D-Gw) and 10 mm in frames 1 to 13 (D-SR) ensured according to the invention.
  • This machine configuration with a maximum casting speed of 10 m / min and a maximum capacity of approx. 3 million t / a represents an extremely advantageous solution when using the Invention represents a minimal deformation density of the strand occurs during its solidification.
  • a segment should preferably be an odd one Number of 3, 5, 7 or 9 pairs of rollers (15) consisting of Lower (16) and upper roller (17) can be built. Every segment alternately consists of a pair of driven rollers (18), which is position and force controlled with a hydraulic system (19) and two with a hydraulic system (20) in the area the top rollers (17) connected non-driven roller pairs (21), which are provided with a machine element (22) that it allowed the pair of rollers of the top web in the casting direction by one Angle of z. B. to allow +/- 5 ° to swing in any casting situation for a given decrease in strand thickness, the strand if secured its shape.
  • This structure of segments 1 to 13 leads to an optimal one Strand guidance in any type of distribution of strand thickness reduction, every casting situation, every kind of steel grade, with regard to their internal crack sensitivity, d. H. Critical Deformation Limit and the use of a minimum of hydraulic Systems per pair of rollers. So come 0.66 hydraulic systems per pair of rollers.
  • the use of driven Roll pairs of 0.33 units per roll pair a mechanical engineering Minimum at maximum procedural and qualitative effect on the strand to be cast and its surface and interior quality, d. H. for example a minimal one Structure and a minimized accumulation of tensile stresses in the Strand shell between the driven roller pairs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Metal Rolling (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
EP97116428A 1996-09-25 1997-09-20 Méthode et dispositif pour des machines de coulée continue à haute vitesse avec réduction d'épaisseur pendant la solidification Expired - Lifetime EP0834364B1 (fr)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
DE19639297 1996-09-25
DE19639297A DE19639297C2 (de) 1996-09-25 1996-09-25 Verfahren und Vorrichtung für Hochgeschwindigkeits-Stranggießanlagen mit einer Strangdickenreduktion während der Erstarrung
BR9707100A BR9707100A (pt) 1996-09-25 1997-12-16 Processo e dispositivo para instalações de fundição contínua de elevada velocidade com uma redução da espessura do bilete a solidifição
JP34813897A JP4057119B2 (ja) 1996-09-25 1997-12-17 凝固中に板厚減少を行う高速連続鋳造装置のための方法及び装置
CNB981039030A CN1191898C (zh) 1996-09-25 1998-01-08 用于高速连铸设备的、凝固时压下铸坯的方法和装置
US09/004,430 US6276436B1 (en) 1996-09-25 1998-01-08 Method and apparatus for high-speed continuous casting plants with a strand thickness reduction during solidification
AU51080/98A AU753199B2 (en) 1996-09-25 1998-01-12 Method and apparatus for high-speed continuous casting plants with a strand thickness reduction during solidification
ZA9800204A ZA98204B (en) 1996-09-25 1998-01-12 Method and apparatus for high-speed continuous casting plants with a strand thickeness reduction during solidification.
CA002226859A CA2226859C (fr) 1996-09-25 1998-01-13 Methode et appareil pour une installation de coulee continue a haute vitesse avec une reduction d'epaisseur du brin pendant la solidification

Publications (3)

Publication Number Publication Date
EP0834364A2 true EP0834364A2 (fr) 1998-04-08
EP0834364A3 EP0834364A3 (fr) 1998-10-28
EP0834364B1 EP0834364B1 (fr) 2001-07-04

Family

ID=31950970

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97116428A Expired - Lifetime EP0834364B1 (fr) 1996-09-25 1997-09-20 Méthode et dispositif pour des machines de coulée continue à haute vitesse avec réduction d'épaisseur pendant la solidification

Country Status (11)

Country Link
US (2) US6276436B1 (fr)
EP (1) EP0834364B1 (fr)
JP (1) JP4057119B2 (fr)
CN (1) CN1191898C (fr)
AT (1) ATE202735T1 (fr)
AU (1) AU753199B2 (fr)
BR (1) BR9707100A (fr)
CA (1) CA2226859C (fr)
DE (2) DE19639297C2 (fr)
ES (1) ES2160877T3 (fr)
ZA (1) ZA98204B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1050355A2 (fr) * 1999-05-07 2000-11-08 Sms Schloemann-Siemag Aktiengesellschaft Procédé et installation pour la production d'un produit en acier coulé en continu
EP1132161A1 (fr) * 2000-03-10 2001-09-12 SMS Demag AG Procédé pour la coulée continue de brames, en particulier de brames minces
AT408323B (de) * 1999-12-01 2001-10-25 Voest Alpine Ind Anlagen Verfahren zum stahl-stranggiessen
WO2002083340A2 (fr) * 2001-04-14 2002-10-24 Sms Demag Aktiengesellschaft Augmentation d'epaisseur de format pour des installations de coulee continue pour brames minces
WO2002085559A1 (fr) * 2001-04-21 2002-10-31 Sms Demag Aktiengesellschaft Procede et dispositif pour produire une matiere de base de coulee continue
WO2002090019A1 (fr) * 2001-05-07 2002-11-14 Sms Demag Aktiengesellschaft Procede et dispositif permettant la coulee continue de blocs, de brames ou de brames minces

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10027324C2 (de) * 1999-06-07 2003-04-10 Sms Demag Ag Verfahren zum Gießen eines metallischen Strangs sowie System hierzu
DE19933635A1 (de) * 1999-07-17 2001-01-18 Sms Demag Ag Verfahren und Vorrichtung zur Formatdickenänderung des Gußstranges einer Stranggießanlage im kontinuierlichen Gießbetrieb
DE19956556A1 (de) * 1999-11-24 2001-05-31 Sms Demag Ag Radien-Konfiguration der Strangführung einer Vertikalabbiege-Stranggießanlage
ES2258438T3 (es) 1999-12-15 2006-09-01 Sms Demag Ag Procedimiento para la modificacion del formato de una colada continua debajo de la coquilla de una instalacion de fundicion de colada continua.
DE10057160A1 (de) 2000-11-16 2002-05-29 Sms Demag Ag Verfahren und Vorrichtung zum Herstellen von Dünnbrammen
KR100701185B1 (ko) 2001-05-23 2007-03-29 주식회사 포스코 세그먼트 제로 소프트리덕션 장치
ITMI20021996A1 (it) * 2002-09-19 2004-03-20 Giovanni Arvedi Procedimento e linea di produzione per la fabbricazione di nastro a caldo ultrasottile sulla base della tecnologia della bramma sottile
DE102005055529B4 (de) * 2005-11-22 2013-03-07 Sms Siemag Aktiengesellschaft Verfahren und Computerprogramm zum Herstellen einer Probe aus einem Stranggussmaterial
DE102006048511A1 (de) 2006-10-13 2008-04-17 Sms Demag Ag Strangführungsvorrichtung und Verfahren für deren Betrieb
BRPI0818962B1 (pt) * 2007-11-19 2017-07-04 Posco Continuous injection plate and method for manufacturing the same
WO2010051981A1 (fr) * 2008-11-04 2010-05-14 Sms Siemag Ag Procédé et dispositif de commande de la solidification d'une barre de coulée dans une installation de coulée continue lors de la mise en marche du processus de coulée
ITMI20120046A1 (it) * 2012-01-18 2013-07-19 Arvedi Steel Engineering S P A Impianto e procedimento per la colata continua veloce di bramme sottili di acciaio e di bramme di acciaio
CN107081412B (zh) * 2017-04-01 2019-08-09 唐山钢铁集团有限责任公司 高品质塑料模具钢特厚板连铸母坯的制备方法
CN108941493A (zh) * 2018-08-30 2018-12-07 东北大学 一种实验室用小方坯立式连铸机辊列及其使用方法

Citations (5)

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Publication number Priority date Publication date Assignee Title
DE3501422A1 (de) * 1984-02-16 1985-08-22 Voest-Alpine Ag, Linz Durchlaufkokille fuer eine stranggiessanlage
EP0350431A2 (fr) * 1988-07-04 1990-01-10 MANNESMANN Aktiengesellschaft Procédé de coulée continue pour la fabrication de brames avec une épaisseur réduite en présence d'état brut de coulée
EP0611610A1 (fr) * 1993-02-16 1994-08-24 Voest-Alpine Industrieanlagenbau Gmbh Procédé pour la production d'un feuillard, d'un feuillard ébauché ou d'une brame
DE4436328A1 (de) * 1993-10-14 1995-04-20 Voest Alpine Ind Anlagen Verfahren und Anlage zum Stranggießen
DE19639302A1 (de) * 1996-09-25 1998-03-26 Schloemann Siemag Ag Verfahren und Vorrichtung zur Erzeugung von dünnen Brammen auf einer Stranggießanlage

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DE4139242C3 (de) 1991-11-26 1999-08-19 Mannesmann Ag Verfahren zur Erzeugung von Langprodukten aus Stahl
DE4403049C1 (de) * 1994-01-28 1995-09-07 Mannesmann Ag Stranggießanlage und Verfahren zur Erzeugung von Dünnbrammen
DE4403048C1 (de) * 1994-01-28 1995-07-13 Mannesmann Ag Stranggießanlage und Verfahren zur Erzeugung von Rechteck-Dünnbrammen
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
IT1280171B1 (it) * 1995-05-18 1998-01-05 Danieli Off Mecc Linea di colata verticale per bramme

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3501422A1 (de) * 1984-02-16 1985-08-22 Voest-Alpine Ag, Linz Durchlaufkokille fuer eine stranggiessanlage
EP0350431A2 (fr) * 1988-07-04 1990-01-10 MANNESMANN Aktiengesellschaft Procédé de coulée continue pour la fabrication de brames avec une épaisseur réduite en présence d'état brut de coulée
EP0611610A1 (fr) * 1993-02-16 1994-08-24 Voest-Alpine Industrieanlagenbau Gmbh Procédé pour la production d'un feuillard, d'un feuillard ébauché ou d'une brame
DE4436328A1 (de) * 1993-10-14 1995-04-20 Voest Alpine Ind Anlagen Verfahren und Anlage zum Stranggießen
DE19639302A1 (de) * 1996-09-25 1998-03-26 Schloemann Siemag Ag Verfahren und Vorrichtung zur Erzeugung von dünnen Brammen auf einer Stranggießanlage

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1050355A2 (fr) * 1999-05-07 2000-11-08 Sms Schloemann-Siemag Aktiengesellschaft Procédé et installation pour la production d'un produit en acier coulé en continu
EP1050355A3 (fr) * 1999-05-07 2001-03-28 Sms Schloemann-Siemag Aktiengesellschaft Procédé et installation pour la production d'un produit en acier coulé en continu
KR100707785B1 (ko) * 1999-05-07 2007-04-13 에스엠에스 데마그 악티엔게젤샤프트 연속적인 주물을 제조하는 방법 및 장치
AT408323B (de) * 1999-12-01 2001-10-25 Voest Alpine Ind Anlagen Verfahren zum stahl-stranggiessen
DE10058205C5 (de) * 1999-12-01 2009-06-18 Voest-Alpine Industrieanlagenbau Gmbh & Co. Kg Verfahren zum Stahl-Stranggießen
EP1132161A1 (fr) * 2000-03-10 2001-09-12 SMS Demag AG Procédé pour la coulée continue de brames, en particulier de brames minces
US6612364B2 (en) 2000-03-10 2003-09-02 Demag Aktiengesellschaft Continuous casting method with soft reduction
WO2002083340A2 (fr) * 2001-04-14 2002-10-24 Sms Demag Aktiengesellschaft Augmentation d'epaisseur de format pour des installations de coulee continue pour brames minces
WO2002083340A3 (fr) * 2001-04-14 2002-12-19 Sms Demag Ag Augmentation d'epaisseur de format pour des installations de coulee continue pour brames minces
WO2002085559A1 (fr) * 2001-04-21 2002-10-31 Sms Demag Aktiengesellschaft Procede et dispositif pour produire une matiere de base de coulee continue
WO2002090019A1 (fr) * 2001-05-07 2002-11-14 Sms Demag Aktiengesellschaft Procede et dispositif permettant la coulee continue de blocs, de brames ou de brames minces
US7025118B2 (en) 2001-05-07 2006-04-11 Sms Demag Aktiengesellschaft Method and device for continuously casting ingots, slabs or thin slabs

Also Published As

Publication number Publication date
ES2160877T3 (es) 2001-11-16
US20020017375A1 (en) 2002-02-14
EP0834364A3 (fr) 1998-10-28
ATE202735T1 (de) 2001-07-15
ZA98204B (en) 1998-06-24
JPH11179505A (ja) 1999-07-06
AU753199B2 (en) 2002-10-10
JP4057119B2 (ja) 2008-03-05
US6276436B1 (en) 2001-08-21
CA2226859C (fr) 2006-11-07
DE19639297C2 (de) 2000-02-03
BR9707100A (pt) 1999-07-27
DE59703945D1 (de) 2001-08-09
DE19639297A1 (de) 1998-03-26
CA2226859A1 (fr) 1999-07-13
CN1191898C (zh) 2005-03-09
AU5108098A (en) 1999-07-29
CN1222419A (zh) 1999-07-14
EP0834364B1 (fr) 2001-07-04

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