EP1330321B1 - Verfahren und vorrichtung zum stranggiessen und anschliessendem verformen eines giessstranges aus stahl, insbesondere eines giessstranges mit blockformat oder vorprofil-format - Google Patents

Verfahren und vorrichtung zum stranggiessen und anschliessendem verformen eines giessstranges aus stahl, insbesondere eines giessstranges mit blockformat oder vorprofil-format Download PDF

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Publication number
EP1330321B1
EP1330321B1 EP01980448A EP01980448A EP1330321B1 EP 1330321 B1 EP1330321 B1 EP 1330321B1 EP 01980448 A EP01980448 A EP 01980448A EP 01980448 A EP01980448 A EP 01980448A EP 1330321 B1 EP1330321 B1 EP 1330321B1
Authority
EP
European Patent Office
Prior art keywords
strip
section
strand
soft
cast strip
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
EP01980448A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1330321A1 (de
Inventor
Adolf Zajber
Thomas Fest
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 EP1330321A1 publication Critical patent/EP1330321A1/de
Application granted granted Critical
Publication of EP1330321B1 publication Critical patent/EP1330321B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • B22D11/1246—Nozzles; Spray heads
    • 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
    • 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
    • B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
    • B22D11/225—Controlling or regulating processes or operations for cooling cast stock or mould for secondary cooling

Definitions

  • the invention relates to a method and a device for continuous casting and then deforming a cast strand made of steel, especially one Cast strand with block format or pre-profile format, in which the secondary cooling depending on the cooling condition of the casting strand cross-section in the course of the strand is adjusted, with the secondary cooling at least in corner areas is reduced.
  • the method described at the outset is based on JP-A-03 090258 Continuous casting process with a soft reduction section describes.
  • the cooling The casting strand is adapted to the state of solidification of the strand depending on the size of the swamp, by one of the Row-wide row of spray nozzles, individual, outer spray nozzles be switched off.
  • the geometry of the secondary cooling therefore always remains equal.
  • the cooling of the casting strand cross section is restricted at the corners. Such a method only roughly captures those that occur in the course of the strand Cooling conditions.
  • the invention has for its object secondary cooling, strand support and To coordinate deformation temperatures in such a way that also very difficult to cast steel types can be cast and all steel grades, in which segregations and porosities for further processing and End use are important and measures alongside to propose an improvement in the internal quality also for the surface quality.
  • the object is achieved in that the secondary cooling in its geometric design, the solidification profile of the casting strand adapted analogously to the following length of the casting strand and that the strand support also depends on the solidification profile of the Casting strand is analogously reduced on the following path length.
  • the strand support can be adapted to the strand shell growth on all sides, by the roller box length being equal to or less than the swamp width, where Edge cooling is avoided. As a result, the casting material is in the structure and on the surface improved significantly.
  • the corner areas of the casting strand cross section are included increasing distance less cooled than the central areas.
  • the single ones Pages are cooled with less water Optimization of the temperature distribution in the strand cross-section, including one subsequent soft reduction process is influenced.
  • the spray jets in adapted to the secondary cooling with its spray angle of the strand shell thickness be that a smaller swamp width a smaller spray angle is assigned.
  • secondary cooling at the spray angle is the growth of the strand shell adjusted and there is an optimal temperature distribution in the strand cross-section and also on the surface, with a on the edges weak temperature drop is achieved.
  • a similar effect can be achieved if the width of the sump is reduced by using the Distance of the spray nozzles generating the spray jets to the strand surface in Dependency of the solidification profile is changed.
  • the strand top and the The underside of the strand can be selectively cooled more intensively. Come for it especially the middle areas, so that a further reduction the swamp width occurs. This is done on the top and bottom of the strand cooling the surface as a harder and more rigid deformation surface for the soft reduction process before the soft reduction segment.
  • the Secondary cooling can be adapted to the cooling condition of the casting strand cross-section is achieved the object according to the invention in that the secondary cooling depending on the solidification profile and the path length is executed with essentially the full width of the strand and that the Secondary cooling using the spray jets and strand support using the Support rollers depending on the solidification profile of the casting strand within the path length is reduced in the arc sections in such a way that the casting strand before entering a soft reduction segment, only on the underside of the strand Strand width is supported.
  • This can in addition to the process improvements a cost-effective improvement of the device can be achieved, wherein through a load-adapted design of the machine components mechanical and thermal loads can be reduced.
  • the soft reduction segment with driver stands arranged at the beginning and end with driven Driver roles are formed and that the soft-reduction segment consists of at least two roller stands with roller pairs without drives is formed, the The upper frame can be adjusted hydraulically to the lower frame.
  • the soft reduction segment is carried out by a multi-role segment become.
  • a steady taper creates a continuous soft reduction process over a selectable length.
  • the theoretical forecast the bottom thickness over the last few meters in the final solidification area leaves one Close the appropriate conicity job and its length.
  • a Straightening driver an intensive cooling device for the strand top and the strand bottom of the casting strand cross section is arranged. Show some steel grades in the case of further processing by so-called “quenching", a better surface structure. In conjunction with cooling before the soft reduction process can this effect can also be achieved.
  • the effect of using the mechanical devices can be carried out through soft reduction a so-called “thermal soft reduction” are still supported. For this, the cast one Additional and targeted strand in the relevant areas charged with water.
  • Another arrangement is that in front of a soft reduction segment an intensive cooling device for the top of the strand and the underside of the strand of the casting strand cross section is arranged.
  • a further embodiment is given by the soft reduction segment one in the direction of strand movement or counter to the direction of strand movement moveable unit that forms in front of one or more driver stands is arranged.
  • the soft reduction segments as directional and soft reduction segments are arranged between the driver frames. This is given a combination of mechanical and thermal soft reduction.
  • the soft reduction segments be in the direction of strand movement after the straightening and discharging machine (the driver scaffolding) can be arranged.
  • the process for continuous casting of steel in rectangular or block formats according to Fig. 1 is characterized by cooling, supporting and deforming.
  • the casting strand 1 with a casting strand cross section 1 a has block format 2 in the exemplary embodiment and emerges from a continuous casting mold 3 and is immediately in a secondary cooling 4 chilled. This arises from arch section A to arch section B. and C and D each have a solidification profile 5 (FIGS. 2A, 2B, 2C) which is characterized by an already solid strand shell 5a with one from arch section to arch section represents growing strand shell thickness 5b.
  • the process now works in such a way that the secondary cooling 4, in its geometric design, matches the solidification profile 5 of the casting strand 1 on the respective path length 6, which from arc section A to arc section D, is adjusted analogously and a strand support 11 also depending on the solidification profile 5 of the Casting strand 1 on the following path length 6 each reduced analogously becomes.
  • the corner regions 1b of the casting strand cross section 1a increase with increasing Path length 6 less cooled than the central areas 1 c.
  • This regulation takes place e.g. in that the spray jets 7 in the secondary cooling 4 with its spray angle 7a of the respective strand shell thickness 5b in this way be adjusted so that a shrinking sump width 8 becomes a smaller one Spray angle 7a is assigned.
  • the distance 9 of the spray nozzles 10 generating the spray jets 7 becomes to the strand surface 1 d depending on the solidification profile that arises 5 changed, i.e. decreased (Fig. 2B).
  • corner regions 1b of the casting strand cross section 1a increase with increasing Path length 6 less supported than the central area 1c (Fig. 3A, 3B, 3C).
  • the casting strand cross-section 1a becomes from the top rolled below according to the so-called soft reduction process, an otherwise usual Bruising does not take place.
  • the device shown for continuous casting and subsequent deformation of a Casting strand 1 made of steel, in particular a casting strand 1 with block format 2, the secondary cooling 4 and the strand support 11 to the cooling state of the casting strand cross section 1a is designed in such a way that the secondary cooling 4 depending on the solidification profile 5 and the distance traveled Path length 6 starting with essentially the full one Strand width 1h is executed and that the secondary cooling 4 and the strand support 11 depending on the solidification profile 5 of the casting strand 1 within the Path length 6 can be reduced such that the casting strand 1 before entry in a soft reduction segment 12 only on the underside of the strand 1g Strand width 1h is supported.
  • the elbows 13a can form.
  • the soft reduction segment 12 has driver structures at the beginning 12a and at the end 12b 14 associated with driven driver rollers 14a.
  • the soft reduction segment 12 itself consists of two or more roller stands 12c, the There are pairs of rollers without a drive.
  • An upper frame 12d is hydraulically on a subframe 12e adjustable.
  • solidified Achieving layers is an intensive cooling device in front of a soft reduction segment 12 17 for the strand top 1f and the strand bottom 1g on the casting strand cross section 1a arranged.
  • This increases strength and forms a soft reduction preparation.
  • Intensive cooling on the top of the strand 1f and Strand underside 1g can not only in front of the directional driver 16, but also in front the movable soft reduction segment 12 or after the directional driver 16 makes sense be applied.
  • FIG. 6 shows a second alternative design.
  • the soft reduction segment 12 as one in the strand movement direction 15 or counter to the Strand movement direction 15 slidable unit 12f formed in Strand movement direction 15 arranged in front of one or more driver stands 14 is.
  • the soft reduction segment 12 in the directional driver area is connected as a mandatory concept with the conveying concept for two-block systems in general Guide points designed.
  • the casting strand 1 takes a straight shape on. Deviating from slab plants in which the strand has a curved track is led to the straight form in the straightening area a bending line which, depending on the influencing factors of moment of inertia, Temperature of the casting strand and temperature distribution within the casting strand cross section 1a is different, which is even partially e.g. after every Guide point deviates from the base bending line over short distances and bending turning points has, so that the casting strand 1 is particularly in this area has strong creep behavior.
  • Soft reduction segment 12 Due to a given curved path in the Soft reduction segment 12 can have a permissible elongation E determined in practice be specified.
  • the elastoplastic interlocking created by the bending process brings the casting strand 1 into a state (values of the theoretical yield point, the flow behavior u. Like.), which normally requires little effort required to perform additional soft reduction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Metal Rolling (AREA)
EP01980448A 2000-10-20 2001-09-28 Verfahren und vorrichtung zum stranggiessen und anschliessendem verformen eines giessstranges aus stahl, insbesondere eines giessstranges mit blockformat oder vorprofil-format Expired - Lifetime EP1330321B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10051959 2000-10-20
DE10051959A DE10051959A1 (de) 2000-10-20 2000-10-20 Verfahren und Vorrichtung zum Stranggießen und anschließendem Verformen eines Gießstranges aus Stahl, insbesondere eines Gießstranges mit Blockformat oder Vorprofil-Format
PCT/EP2001/011222 WO2002034432A1 (de) 2000-10-20 2001-09-28 Verfahren und vorrichtung zum stranggiessen und anschliessendem verformen eines giessstranges aus stahl, insbesondere eines giessstranges mit blockformat oder vorprofil-format

Publications (2)

Publication Number Publication Date
EP1330321A1 EP1330321A1 (de) 2003-07-30
EP1330321B1 true EP1330321B1 (de) 2004-07-14

Family

ID=7660401

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01980448A Expired - Lifetime EP1330321B1 (de) 2000-10-20 2001-09-28 Verfahren und vorrichtung zum stranggiessen und anschliessendem verformen eines giessstranges aus stahl, insbesondere eines giessstranges mit blockformat oder vorprofil-format

Country Status (11)

Country Link
US (1) US6892794B2 (ko)
EP (1) EP1330321B1 (ko)
JP (1) JP2004525767A (ko)
KR (1) KR100817171B1 (ko)
CN (1) CN1222382C (ko)
AT (1) ATE270933T1 (ko)
AU (1) AU2002212289A1 (ko)
DE (2) DE10051959A1 (ko)
RU (1) RU2271895C2 (ko)
UA (1) UA75616C2 (ko)
WO (1) WO2002034432A1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010022003A1 (de) 2009-06-19 2010-12-23 Sms Siemag Ag Vertikal-Stranggießanlage

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1293966C (zh) 2002-02-22 2007-01-10 Sms迪马格股份公司 用于金属坯、尤其是钢材连铸金属坯的连铸和直接成型的方法和装置
DE102004057427A1 (de) * 2004-11-27 2006-06-01 Sms Demag Ag Vorrichtung und Verfahren zum Stranggießen
SI1897636T1 (sl) * 2006-09-04 2009-12-31 Concast Ag Naprava za kontinuirano litje in postopek za kontinuirano litje
CN101970151A (zh) * 2008-01-14 2011-02-09 Sms康卡斯特股份公司 尤其用于长形钢制品的连铸设备以及连铸方法
DE102008004915A1 (de) * 2008-01-18 2009-07-23 Sms Demag Ag Treibrichtsystem für Stranggießanlagen
DE102010007659B4 (de) 2010-01-12 2019-05-09 Sms Group Gmbh Stranggießmaschine mit einem Kaltstrang
IT1400003B1 (it) 2010-05-18 2013-05-09 Danieli Off Mecc Dispositivo di colata continua e relativo procedimento
CN102744383A (zh) * 2012-07-30 2012-10-24 首钢总公司 一种含Nb亚包晶钢连铸坯、其制造方法及专用连铸机
DE102015223787A1 (de) * 2015-10-09 2017-04-13 Sms Group Gmbh Verfahren und Vorrichtung zum Herstellen eines metallischen Bandes durch Endloswalzen
AT518450B1 (de) * 2016-03-17 2021-02-15 Primetals Technologies Austria GmbH Verfahren und Kühleinrichtung zum Kühlen eines metallischen Strangs
DE102017213842A1 (de) * 2017-08-08 2019-02-14 Sms Group Gmbh Verfahren und Anlage zum Stranggießen eines metallischen Produkts
CN115415489B (zh) * 2022-09-05 2024-02-13 东北大学 一种铝/铝合金薄板坯连铸装备及工艺

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH572370A5 (ko) * 1974-02-28 1976-02-13 Concast Ag
JPS58148059A (ja) 1982-02-27 1983-09-03 Nippon Kokan Kk <Nkk> 連続鋳造における鋳片の温度制御法および装置
JPH0741386B2 (ja) * 1989-08-31 1995-05-10 新日本製鐵株式会社 連続鋳造方法およびスプレー幅切り装置
JP2528341Y2 (ja) * 1991-08-07 1997-03-12 住友重機械工業株式会社 連続鋳造設備におけるビ−ムブランクと矩形鋳片兼用ロ−ラエプロン
DE69615534T2 (de) 1995-10-18 2002-05-02 Sumitomo Metal Ind Stranggiessverfahren und -anlage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010022003A1 (de) 2009-06-19 2010-12-23 Sms Siemag Ag Vertikal-Stranggießanlage
DE102010022003B4 (de) 2009-06-19 2022-12-29 Sms Group Gmbh Vertikal-Stranggießanlage

Also Published As

Publication number Publication date
EP1330321A1 (de) 2003-07-30
US20040020633A1 (en) 2004-02-05
US6892794B2 (en) 2005-05-17
JP2004525767A (ja) 2004-08-26
RU2271895C2 (ru) 2006-03-20
KR100817171B1 (ko) 2008-03-27
CN1469789A (zh) 2004-01-21
UA75616C2 (en) 2006-05-15
AU2002212289A1 (en) 2002-05-06
ATE270933T1 (de) 2004-07-15
DE50102870D1 (de) 2004-08-19
WO2002034432A1 (de) 2002-05-02
DE10051959A1 (de) 2002-05-02
CN1222382C (zh) 2005-10-12
KR20030064758A (ko) 2003-08-02

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