EP1095720A1 - Cadre de guidage d'une machine de coulée continue en particulier pour brames d'acier minces - Google Patents

Cadre de guidage d'une machine de coulée continue en particulier pour brames d'acier minces Download PDF

Info

Publication number: EP1095720A1
Authority: EP; European Patent Office
Prior art keywords: segment; strand; phase shift; rollers; roller
Prior art date: 1999-10-25
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

EP00121982A

Other languages

German (de)

English (en)

Other versions

EP1095720B1 (fr

Inventor

Erich Dr.-Ing. Hövestädt

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.)

1999-10-25

Filing date

2000-10-10

Publication date

2001-05-02

2000-10-10 Application filed by SMS Demag AG filed Critical SMS Demag AG

2001-05-02 Publication of EP1095720A1 publication Critical patent/EP1095720A1/fr

2004-08-11 Application granted granted Critical

2004-08-11 Publication of EP1095720B1 publication Critical patent/EP1095720B1/fr

2020-10-10 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000009749 continuous casting Methods 0.000 title claims description 5
229910000831 Steel Inorganic materials 0.000 title claims description 4
239000010959 steel Substances 0.000 title claims description 4
230000010363 phase shift Effects 0.000 claims abstract description 17
238000005266 casting Methods 0.000 claims abstract description 16
229910001338 liquidmetal Inorganic materials 0.000 claims abstract description 8
230000010355 oscillation Effects 0.000 claims abstract description 4
230000003247 decreasing effect Effects 0.000 claims description 4
238000010276 construction Methods 0.000 description 2
230000000694 effects Effects 0.000 description 2
239000007788 liquid Substances 0.000 description 2
230000000737 periodic effect Effects 0.000 description 2
230000007704 transition Effects 0.000 description 2
230000015572 biosynthetic process Effects 0.000 description 1
230000001419 dependent effect Effects 0.000 description 1
230000001771 impaired effect Effects 0.000 description 1
230000007257 malfunction Effects 0.000 description 1
230000005499 meniscus Effects 0.000 description 1
239000002184 metal Substances 0.000 description 1
238000000034 method Methods 0.000 description 1
238000005086 pumping Methods 0.000 description 1
238000009420 retrofitting Methods 0.000 description 1
238000005096 rolling process Methods 0.000 description 1
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1

Images

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
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing

Definitions

the invention relates to a strand guide frame having a stationary mold Continuous caster, especially for thin slabs made of steel, with the Corresponding strand width corresponding rows of segments with a roller pitch arranged rollers for guiding and driving the Liquid metal filled strand.
the individual rolls arranged in segments are usually constant Distances to each other in the respective scaffolding. This distance is basically dependent on the roll thickness and the requirement between the rollers elements for applying splash water to cool the To provide slabs.
Regularly are those in the upper and lower frame of the individual guide frames arranged roles directly as pairs of roles arranged. In normal operation, the division of roles corresponds to a half phase (180 degrees) of the vibration of the liquid metal.
EP 0 041 498 A2 has disclosed a continuous sheet caster with one below the mold guide arranged, the two opposite one another Has roller conveyors, the rollers of which are mounted on scaffolding parts, the Distance between opposing scaffolding parts and thus the distance between the Roller conveyors can be changed according to a strand cross-section to be set is, and wherein the rollers at least one of the roller tracks on the frame part in Longitudinal direction of this roller conveyor is arranged displaceably and on the scaffold part in different Layers are fixable.
the aim of the subject of this document is to convert for the purpose of adjustment the distance between the opposing roller conveyors the desired strand thickness so that the distance of the Final rolling of adjacent scaffolding parts remains approximately the same and the retrofitting of the system can be carried out in a simple manner and without great effort.
a strand guide frame is known from document JP 57-209759, where the roles of the upper frame to those of the lower frame in each case Gap are arranged, the asymmetrical arrangement of at least one part of the opposite rows result to even out the shape of the swamp.
a method and a corresponding device are known from document WO 98/20998 for continuous casting of thin slabs with casting speeds greater 3m / min. known in a continuous caster, in which after leaving the mold Strand shell corresponding to each broad side of the slab during its plastic behavior the division of roles of the supporting guide roles into a stationary one Waveform is molded.
the strand shell box during its elastic behavior, according to the assignment of the opposite arranged guide rollers, an unsteady undulating surface shape embossed and after metrological recording of the transition from plastic on elastic behavior in the area of elastic behavior of the Strand tray box, the slab is supported in such a way that it is minimal Force is exerted on the strand shell through the strand guide.
the disadvantage of the subject of this document is the imprinting of a waveform of the strand, which has no further influence on the strand shell the guide scaffold is meandered.
this design has the disadvantage that the individual Segments are structured differently and are therefore not interchanged can be.
the transition area changes from plastic its in the elastic range for different casting speeds Position so that the casting speed for a casting sequence can only be changed to a limited extent.
Strand guiding structures which essentially aim at minimizing bulging (Bulging) aligned structural properties of the strand shell of individual rolls and roll spacings can be used in modern Plant driven speeds represent a sound box that excites the liquid column to a resonance vibration. With such from the construction of the strand guide scaffold fluctuations There is a disruption in the mold meniscus. This disorder leads to changes Strand shell thicknesses in the mold. Wander these changed strand shell thicknesses in the area of the strand guide rollers, the amount changes of the "bulging" at this point and there is a change in volume of the Strand shell and thus to a "pumping" in the area of the mold level, and in the frequency of the roller spacing. This can lead to another malfunction the formation of strand shells and thereby to a permanent oscillation of the Pouring mirror come.
the invention has for its object with simple design measures to create a strand guide structure in which a rocking of the mold level is avoided in the stationary mold.
the oppositely arranged rollers of the respective rows of the individual segments of a strand guide frame of a continuous caster, in particular for thin slabs made of steel, are spaced from one another in such a way that they cause a phase shift in relation to a sinusoidal oscillation with the wavelength for an unsteady bulging of the strand which moves at the casting speed I R have.
the change in the roller spacing can occur during the roller shift ⁇ I take both positive and negative values.
the inventor shows one Way to design the role plan so that irregularities compensate.
the phase shift ⁇ is greater than 30 °.
the phase shift is between two adjacent pairs of rollers at least 5 °, based on the average roller spacing of the segment.
the individual segments are divided into areas the individual areas have increasing or decreasing roller spacings.
FIG. 1 shows two arranged rollers 31, 32 of an upper frame of a segment and the rollers 11, 12 of a subframe of a segment. Between a continuous casting slab B is guided to the rollers, which is a liquid sump F has enveloping strand shell S. The strand shell S widens between the opposite arranged rollers 11, 31 and 12, 32 as a result of the ferrostatic Pressure of the sump F consisting of liquid metal. This bulging is called bulging.
FIG. 2 shows only the roller arrangement of the lower frame of the strand guide frames.
two segments 1, 2 are shown with the rollers 11 to 18 and 21 to 28.
the segment 1 has a constant distance, namely 180 mm here, and the segment 2 alternating roller distances, namely 180 mm and 185 mm.
FIG. 3 shows the subframe of a single segment with the rollers 11 to 18.
this segment there are six constant roller distances, namely 180 mm, and a roller distance is 190 mm.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Continuous Casting (AREA)
Movable Scaffolding (AREA)

EP00121982A 1999-10-25 2000-10-10 Cadre de guidage d'une machine de coulée continue en particulier pour brames d'acier minces Expired - Lifetime EP1095720B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19951262A DE19951262C1 (de)	1999-10-25	1999-10-25	Strangführungsgerüst einer Stranggießanlage, insbesondere für Dünnbrammen aus Stahl
DE19951262		1999-10-25

Publications (2)

Publication Number	Publication Date
EP1095720A1 true EP1095720A1 (fr)	2001-05-02
EP1095720B1 EP1095720B1 (fr)	2004-08-11

Family

ID=7926739

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP00121982A Expired - Lifetime EP1095720B1 (fr)	1999-10-25	2000-10-10	Cadre de guidage d'une machine de coulée continue en particulier pour brames d'acier minces

Country Status (3)

Country	Link
EP (1)	EP1095720B1 (fr)
AT (1)	ATE273094T1 (fr)
DE (2)	DE19951262C1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102009011849A1 (de)	2009-03-05	2010-09-09	Sms Siemag Aktiengesellschaft	Verfahren und Vorrichtung zum Stranggießen von Metallen, insbesondere von Stahl
AT519390A1 (de) *	2016-12-13	2018-06-15	Primetals Technologies Austria GmbH	Verfahren und Vorrichtung zum Regeln einer Stranggießanlage
EP3539690A1 (fr) *	2018-03-12	2019-09-18	SMS Group GmbH	Procédé pour éviter des fluctations du niveau du métal dans une lingotière pendant use séquence de moulage

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102006018757A1 (de) *	2006-04-22	2007-10-25	Sms Demag Ag	Verfahren für die Bestimmung der Rollenabständen von Stützrollen und Strangführungsgerüst einer Stranggießanlage zum Gießen von flüssigen Metallen, insbesondere von flüssigen Stahlwerkstoffen
KR101736574B1 (ko) *	2015-06-04	2017-05-17	주식회사 포스코	응고 장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS57209759A (en) *	1981-06-17	1982-12-23	Nippon Steel Corp	Continuous casting method for steel
WO1998020998A1 (fr) *	1996-11-08	1998-05-22	Mannesmann Ag	Procede et installation de coulee continue de brames fines
EP0917922A1 (fr) *	1997-11-21	1999-05-26	Sms Schloemann-Siemag Aktiengesellschaft	Procédé et installation de coulée en continu de brames
JPH11320059A (ja) *	1998-05-06	1999-11-24	Sumitomo Metal Ind Ltd	連続鋳造装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AT367327B (de) *	1980-05-29	1982-06-25	Voest Alpine Ag	Bogenstranggiessanlage

1999
- 1999-10-25 DE DE19951262A patent/DE19951262C1/de not_active Expired - Fee Related
2000
- 2000-10-10 DE DE50007358T patent/DE50007358D1/de not_active Expired - Lifetime
- 2000-10-10 EP EP00121982A patent/EP1095720B1/fr not_active Expired - Lifetime
- 2000-10-10 AT AT00121982T patent/ATE273094T1/de active

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS57209759A (en) *	1981-06-17	1982-12-23	Nippon Steel Corp	Continuous casting method for steel
WO1998020998A1 (fr) *	1996-11-08	1998-05-22	Mannesmann Ag	Procede et installation de coulee continue de brames fines
EP0917922A1 (fr) *	1997-11-21	1999-05-26	Sms Schloemann-Siemag Aktiengesellschaft	Procédé et installation de coulée en continu de brames
JPH11320059A (ja) *	1998-05-06	1999-11-24	Sumitomo Metal Ind Ltd	連続鋳造装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 068 (M - 201) 19 March 1983 (1983-03-19) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 02 29 February 2000 (2000-02-29) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102009011849A1 (de)	2009-03-05	2010-09-09	Sms Siemag Aktiengesellschaft	Verfahren und Vorrichtung zum Stranggießen von Metallen, insbesondere von Stahl
AT519390A1 (de) *	2016-12-13	2018-06-15	Primetals Technologies Austria GmbH	Verfahren und Vorrichtung zum Regeln einer Stranggießanlage
AT519390B1 (de) *	2016-12-13	2020-09-15	Primetals Technologies Austria GmbH	Verfahren und Vorrichtung zum Regeln einer Stranggießanlage
US11110512B2 (en)	2016-12-13	2021-09-07	Primetals Technologies Austria GmbH	Method and device for regulating a continuous casting machine
EP3539690A1 (fr) *	2018-03-12	2019-09-18	SMS Group GmbH	Procédé pour éviter des fluctations du niveau du métal dans une lingotière pendant use séquence de moulage

Also Published As

Publication number	Publication date
EP1095720B1 (fr)	2004-08-11
ATE273094T1 (de)	2004-08-15
DE19951262C1 (de)	2001-04-05
DE50007358D1 (de)	2004-09-16

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2001-08-22	RIN1	Information on inventor provided before grant (corrected)	Inventor name: HOVESTAEDT, ERICH, DR.-ING.
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