EP1070559B1 - Verfahren zur Formatdickenänderung des Gussstranges einer Stranggiessanlage im kontinuierlichen Giessbetrieb - Google Patents

Verfahren zur Formatdickenänderung des Gussstranges einer Stranggiessanlage im kontinuierlichen Giessbetrieb Download PDF

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Publication number
EP1070559B1
EP1070559B1 EP00114705A EP00114705A EP1070559B1 EP 1070559 B1 EP1070559 B1 EP 1070559B1 EP 00114705 A EP00114705 A EP 00114705A EP 00114705 A EP00114705 A EP 00114705A EP 1070559 B1 EP1070559 B1 EP 1070559B1
Authority
EP
European Patent Office
Prior art keywords
segment
format
segments
casting
adjustment
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
EP00114705A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1070559A1 (de
Inventor
Axel Weyer
Dirk Dr. Letzel
Reiner Külchen
Adolf Zajber
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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Filing date
Publication date
Application filed by SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP1070559A1 publication Critical patent/EP1070559A1/de
Application granted granted Critical
Publication of EP1070559B1 publication Critical patent/EP1070559B1/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
    • B22D11/10—Supplying or treating molten metal
    • 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
    • B22D11/1281—Vertical 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
    • B22D11/12—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 for changing the format thickness of the cast strand a continuous casting in continuous casting operation, the strand below a mold on both sides with opposite roller carriers is operatively connected, in a series of roll-carrying, by means of joints are divided into adjacent segments and each Segment is adjustable in an angle to the casting, and wherein in one Starting position the entire strand guide to be changed to a uniform Production format thickness is set.
  • Format thickness change in the continuous casting during the casting operation are indispensable for production optimization. However, so far had to the casting speed for the thickness reduction or increase in thickness be temporarily reduced. This results in production losses and the entire Production process is at least temporarily unbalanced. Moreover, in the current process, only fixed, stepped format thickness change can be performed.
  • the document EP 0 450 391 B1 discloses a device for supporting a Metal cast strand, in particular for soft reduction (also called “soft reduction") in a pre-strip caster, wherein below the continuous casting mold to both sides of the cast strand mirror image opposite roller carrier are provided, the rollers are in operative connection with the cast strand.
  • Everyone Roller carrier is arranged in a fixed frame and in several, split roller bearing segments associated with adjusting in combination stand.
  • the roller-bearing segments are hinged to each other in such a way that that each segment adjusted for itself at any angle to G fauxstrang and can be adjusted, and that for general adjustment of the roll carrier the upper adjustment is used. It can be a mechanical, hydraulic, or mechanical-hydraulic adjustment act.
  • the used ones Hydraulic cylinders are installed with force control in the system.
  • the document DE 43 38 805 C2 discloses a method and a device for operating a continuous casting plant, in particular when casting the continuous casting plant for producing thin slabs for hot strip rolling, with at least one of the continuous casting mold downstream Reduierrollencru, the or adjoin which attachable strand guide elements.
  • the reduction roller pair becomes after a given run length of the hot strand on set a smaller, a squeezing the sump causing gap width.
  • the hot strand becomes a sprue format with one below the thickness of the desired final format lying thickness deformed.
  • the strand guide elements or the Reduzierrollencru are thereafter - preferably successively - on the Thickness of the final format made as soon as the less thick gate format completely has reached its setting range.
  • the reduction roller pair is pressure-controlled and is positioned after the employment of the strand guide to the final format.
  • Document EP 0 743 116 A1 discloses a vertical casting line for casting strands, comprising a mold and then at the outlet of the mold an assembly with casters, furthermore a variety of guide units, assigned vertical roller segment, as well as a driver arrangement in conjunction with a horizontal segment of the casting line.
  • the guide units comprise at least the entire vertical segment of the casting line, wherein at least one part the roles of the leadership units interact with adjusting devices, the a process data unit to control a controllable soft reduction at least in the second part of the vertical segment.
  • the document DE 196 39 297 A1 discloses a method and a device for High-speed continuous casting machines with a reduction in strand thickness during the paralysis.
  • the method and the corresponding device for the continuous casting of strands whose cross section reduces during solidification is is preferably poured with an oscillating mold is the strand cross-section linearly over a minimum length of the strand guide directly reduced below the mold.
  • the soft reduction " to a maximum immediately before the final solidification or the sump tip, can be a critical Deformation of the strand taking into account the casting speed as well as the steel grade off.
  • the document US 5,577,548 A discloses a method in continuous casting in a Continuous casting plant, wherein a strand after leaving the casting mold by a wedge-shaped roller gap is reduced in thickness.
  • a strand after leaving the casting mold by a wedge-shaped roller gap is reduced in thickness.
  • the strand is exclusively reduced in thickness in a region with a liquid center, wherein the segments are always set up so that the liquid tip of the center always lie in a region of the strand guide, in which the roller gap is closest to the following strand guide.
  • the invention has the object underlying a procedure for changing the format thickness of the cast strand of a continuous casting plant in a continuous Specify casting operation, in which the casting speed for the Transition process for the change in thickness is not reduced, that is, constant production and casting conditions are maintained.
  • transition length of the strand during the format thickness change is intended to Prevention of production losses are shortened comparatively. In all Transitional situations of the format thickness change should reduce the risk of breakthroughs be ensured optimal strand support.
  • a further embodiment of the method according to the invention provides that the Moving the segments at constant speed using dynamic position control is made, with a force threshold not be determined is exceeded.
  • Figure 1 shows the function of the process for a reduction in the thickness of a cast strip 9 of a continuous casting in continuous casting operation.
  • the strand 9 is below a mold 10 on both sides with mirror-image opposing roller supports 8, 8 'in operative connection, which are divided in a series of roll-carrying, by means of joints 5 to 7 coupled to each other segments 1 to 4.
  • Each segment 1 to 4 is adjustable at an angle to the casting 9.
  • the entire strand guide to be changed is set to a uniform production format thickness, as shown in the illustrated home position.
  • the format change is performed in a controlled sequence of adjustment steps of the segments 1 to 4.
  • the format thickness reduction is effected by sequential closing in the casting direction of the successive segments 1 to 4, as can be seen from the illustrated phases 1 to 4.
  • the articulated connection 5 with segment 2 inlet side is closed by nominal value.
  • the segment position for the target format - segment 2 outlet side with segment 3 inlet side is fed in a second adjustment phase, and in sequential order of similar steps, the adjustment of the segments 3 and 4 is made according to phase 3 or 4 shown
  • the force means 11 in the direction of a constriction of the cast strand 9 followed in phase 2 by the intervention of the adjusting 12 in the direction of narrowing of the strand cross section and sequentially in phase 3 and phase 4
  • the adjusting devices 13 and 14th up to the overall reduced format thickness, according to final state in phase 4.
  • An effective force monitoring monitors the adjustment. Should the force exceed a calculated threshold, then Position control switched to force control. After reaching the target position is switched back to position control accordingly.
  • the existing sump in segment 1, 2 and optionally 3 is not through interrupted the process.
  • the strand support is via the switching of position given to force control in all phases.
  • segment 2 outlet side is opened (phase 2).
  • the adjustment speed is calculated using the current casting speed, the segment length and the required adjustment as in the format thickness reduction.
  • An effective force monitor calculated over the current cylinder pressures Hydraulic adjustment, permanently controls the adjustment process.
  • position control switched in force control. After reaching the target position becomes appropriate switched back to position control.
  • segment 3 inlet side is simultaneously with the same adjustment speed as segment 2 exit side ascended, according to phase 2.
  • the Monitoring function is the same as for segment 2 outlet side.
  • segment 3 becomes Outlet side and segment 4 inlet side raised (phase 3).
  • the calculation the casting speed and the monitoring takes place as previously described.
  • segment 4 becomes Outlet side raised (phase 4).
  • the calculation of the monitoring is done as previously described.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP00114705A 1999-07-17 2000-07-08 Verfahren zur Formatdickenänderung des Gussstranges einer Stranggiessanlage im kontinuierlichen Giessbetrieb Expired - Lifetime EP1070559B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19933635 1999-07-17
DE19933635A DE19933635A1 (de) 1999-07-17 1999-07-17 Verfahren und Vorrichtung zur Formatdickenänderung des Gußstranges einer Stranggießanlage im kontinuierlichen Gießbetrieb

Publications (2)

Publication Number Publication Date
EP1070559A1 EP1070559A1 (de) 2001-01-24
EP1070559B1 true EP1070559B1 (de) 2005-03-23

Family

ID=7915173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00114705A Expired - Lifetime EP1070559B1 (de) 1999-07-17 2000-07-08 Verfahren zur Formatdickenänderung des Gussstranges einer Stranggiessanlage im kontinuierlichen Giessbetrieb

Country Status (11)

Country Link
US (1) US6712123B1 (es)
EP (1) EP1070559B1 (es)
JP (1) JP5027351B2 (es)
KR (1) KR100708776B1 (es)
CN (1) CN1153637C (es)
AT (1) ATE291512T1 (es)
BR (1) BR0002916A (es)
CA (1) CA2314011C (es)
DE (2) DE19933635A1 (es)
ES (1) ES2239971T3 (es)
TW (1) TW452514B (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10057160A1 (de) * 2000-11-16 2002-05-29 Sms Demag Ag Verfahren und Vorrichtung zum Herstellen von Dünnbrammen
DE10118518A1 (de) * 2001-04-14 2002-10-24 Sms Demag Ag Formatdickenerhöhung für Dünnbrammen-Stranggießanlagen
DE10122118A1 (de) * 2001-05-07 2002-11-14 Sms Demag Ag Verfahren und Vorrichtung zum Stranggiessen von Blöcken, Brammen und Dünnbrammen
DE102004054296B4 (de) * 2004-11-09 2021-11-11 Sms Group Gmbh Steuer- und / oder Regeleinrichtung für ein Stützrollengerüst einer Stranggießvorrichtung für Metalle, insbesondere für Stahlwerkstoffe
US20090092001A1 (en) 2005-07-27 2009-04-09 Clay Hildreth Solution making system and method
DE102006048511A1 (de) * 2006-10-13 2008-04-17 Sms Demag Ag Strangführungsvorrichtung und Verfahren für deren Betrieb
KR101858859B1 (ko) * 2016-12-22 2018-05-17 주식회사 포스코 연속 주조 장치 및 방법

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330084B2 (es) * 1973-10-15 1978-08-24
FR2447764A1 (fr) * 1979-02-05 1980-08-29 Fives Cail Babcock Perfectionnements aux installations de coulee continue
AT362542B (de) * 1979-10-01 1981-05-25 Voest Alpine Ag Bogenstranggiessanlage
JPS6021150A (ja) * 1983-07-15 1985-02-02 Nippon Steel Corp 高品質鋳片の製造法
JPS60170563A (ja) * 1984-02-10 1985-09-04 Sumitomo Heavy Ind Ltd 連続鋳造機
DE4010966A1 (de) * 1990-04-05 1991-10-10 Schloemann Siemag Ag Vorrichtung zur stuetzung eines metallgiessstranges, insbesondere zur weichreduktion bei einer vorband-giessanlage
JPH058004A (ja) * 1991-07-04 1993-01-19 Nippon Steel Corp 連続鋳造設備における軽圧下制御方法
JP2811665B2 (ja) * 1992-12-15 1998-10-15 住友金属工業株式会社 鋳片圧下方法及び鋳片圧下装置
AT401744B (de) * 1993-10-14 1996-11-25 Voest Alpine Ind Anlagen Verfahren und anlage zum stranggiessen
DE4338805C2 (de) * 1993-11-12 1995-10-26 Schloemann Siemag Ag Verfahren und Vorrichtung zum Betreiben einer Stranggießanlage
IT1280171B1 (it) * 1995-05-18 1998-01-05 Danieli Off Mecc Linea di colata verticale per bramme
WO1997000748A1 (fr) * 1995-06-22 1997-01-09 Sumitomo Metal Industries, Ltd. Procede de coulee en continu de pieces minces
JP3055453B2 (ja) * 1996-01-29 2000-06-26 住友金属工業株式会社 連続鋳造方法
AT404806B (de) * 1996-05-08 1999-03-25 Voest Alpine Ind Anlagen Strangführung für eine stranggiessanlage
DE19639297C2 (de) * 1996-09-25 2000-02-03 Schloemann Siemag Ag Verfahren und Vorrichtung für Hochgeschwindigkeits-Stranggießanlagen mit einer Strangdickenreduktion während der Erstarrung
JP2000202605A (ja) * 1999-01-18 2000-07-25 Hitachi Zosen Corp 連続鋳造設備におけるロ―ルセグメント装置

Also Published As

Publication number Publication date
BR0002916A (pt) 2001-04-03
KR20010021096A (ko) 2001-03-15
US6712123B1 (en) 2004-03-30
ES2239971T3 (es) 2005-10-16
JP5027351B2 (ja) 2012-09-19
CN1283534A (zh) 2001-02-14
CA2314011A1 (en) 2001-01-17
CA2314011C (en) 2008-10-21
DE50009839D1 (de) 2005-04-28
EP1070559A1 (de) 2001-01-24
DE19933635A1 (de) 2001-01-18
JP2001047206A (ja) 2001-02-20
CN1153637C (zh) 2004-06-16
TW452514B (en) 2001-09-01
KR100708776B1 (ko) 2007-04-18
ATE291512T1 (de) 2005-04-15

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