WO2005068109A1 - Verfahren und einrichtung zum bestimmen der lage der sumpfspitze im giessstrang beim stranggiessen von flüssigen metallen, insbesondere von flüssigen stahlwerkstoffen - Google Patents
Verfahren und einrichtung zum bestimmen der lage der sumpfspitze im giessstrang beim stranggiessen von flüssigen metallen, insbesondere von flüssigen stahlwerkstoffen Download PDFInfo
- Publication number
- WO2005068109A1 WO2005068109A1 PCT/EP2005/000256 EP2005000256W WO2005068109A1 WO 2005068109 A1 WO2005068109 A1 WO 2005068109A1 EP 2005000256 W EP2005000256 W EP 2005000256W WO 2005068109 A1 WO2005068109 A1 WO 2005068109A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- support roller
- strand
- casting
- continuous casting
- driven
- Prior art date
Links
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
- B22D11/16—Controlling or regulating processes or operations
-
- 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
- B22D11/14—Plants for continuous casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
- B22D2/003—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass for the level of the molten metal
Definitions
- the invention relates to a method and a device for determining the position of the sump tip in the casting strand in the continuous casting of liquid metal, in particular liquid steel materials, in which in the continuous casting mold as billets, blocks, blooms, pre-profiles, thin slabs or slab of cast strand produced is guided in support roller segments, cooled and pulled out through the support roller segments with driven support roller pairs.
- the invention has for its object to achieve a more precise determination of the position of the sump tip in the casting strand compared to all known methods.
- the object is achieved according to the invention in that an indirect measurement of the displaceable amount of the core liquid volume per unit length is carried out by directly measuring process parameters that occur via force and / or path signals on fixed or adjustable individual support rollers or groups of fixed or adjustable support roller pairs and that, based on these measured values, a model calculation is made for the current position of the bottom of the sump, on the basis of which the variable casting parameters are continuously adapted.
- the principle is based on this, while otherwise constant casting conditions at various points along the strand guide from the immediate area below the continuous casting mold to a maximum theoretical point of complete success. rigidization of the casting strand to detect a change or shift in the liquid volume through the targeted movements of support roller segments or individual support rollers or other elements. In particular, it can be determined whether the casting strand at a specific point in time at a specific location still has a liquid core, a lower or higher partial solidification, or has completely solidified.
- measurement signals are based on a local change in the casting strand thickness.
- This measure can be advantageous in several applications:
- a local change in the format thickness by moving one or more drive rollers in the area of a partially solidified casting strand can provide information.
- CSP systems compact strip plants
- billet continuous casting machines with driver frames in segment design and slab casting machines with cyber link segments
- the change in format thickness can be achieved by moving a support roller segment (without an independently driven drive roller) with sufficient speed in the area of the partially solidified area Cast strand can be detected.
- the change in format thickness due to the movement of a segment (with an independently positioned single support roller) at sufficient speed in the area of the partially solidified casting strand indicates the shift in the liquid core volume.
- Another casting parameter can be taken into account in that measurement signals based on a change in the stopper position or a slide position in an intermediate container in front of the continuous casting mold are taken as a basis.
- the change in the stopper position also causes a volume shift that can be detected.
- measurement signals based on the effects of a variable volume supply of liquid metal between the intermediate container and the continuous casting mold are taken as a basis. This causes corresponding repercussions on the casting strand and the pouring sump.
- volume shift takes place in such a way that measurement signals based on changes in the clamping forces between support roller pairs or support roller segment sides are used. It is possible to draw conclusions about volume shifts here, although the support roller segments or support roller pairs do not actively participate in the displacement of the core fluid volume.
- a further embodiment provides that, depending on the model calculation, an automatic setting of a support roller segment or an employed support roller is carried out. This enables the above adjustment of variable casting parameters.
- the exploitation of the measurement results as a reaction to a control activity consists in a sequence of changes in position or force being carried out in a uniform system direction on the casting strand from bottom to top or vice versa.
- the device for determining the position of the sump tip in a casting strand made of liquid metal, in particular made of liquid steel materials is based on a known intermediate container, with a continuous casting mold for billet, block, bloom, pre-profile, thin slab or slab strand formats and Support roller segments or pairs of rollers with driven support rollers.
- the object is achieved according to the invention in that signal transmitters are provided on the intermediate container, in the continuous casting mold, in the hydraulic piston-cylinder units of the support roller segments or in the adjustable, idling or driven individual support rollers, which are connected to a central storage and computer unit stand in which the measurement results are prepared and a model calculation is used to create a current position of the core liquid volume of the casting strand that is still liquid inside. This provides the means for the indirect measurement of casting parameters and the immediate creation of the model calculation.
- a support roller segment without an independently driven, driven individual support roller on the loose side, depending on the position and width of the local and temporal swamp tip is inclined at the top or bottom of the strand running direction by means of the two piston-cylinder units spaced apart in the strand running direction.
- FIG. 1 is a side view of a continuous slab casting machine with the signal transmitters
- FIG. 2A shows a support roller segment, the casting strand with a liquid core and sump tip without an independently driven drive roller
- 2B the degrees of freedom of the support roller segment on the loose side
- FIG. 3A shows a support roller segment, the casting strand with a liquid core and sump tip with an independently actuated drive roller
- FIG. 3B shows the degrees of freedom of the support roller segment with a drive roller on the loose side
- FIG. 4 shows an individual support roller with or without a drive on the partially rigid casting strand
- FIG. 5 shows the degrees of freedom a non-driven and driven single support roller, individually and in combination.
- a continuous slab caster according to FIG. 1 serves as the basis for the explanations of the method for determining the current position of the sump tip 1a in the casting strand 1.
- Liquid steel material is drained from a ladle 2 into an intermediate container 3, from which the steel flows into a Continuous casting mold 4 flows.
- the formats 4a can be billet, trestle, billet, pre-profile, thin slab or slab strand formats.
- the cast casting strand 1 moves through a support roller segment 5 through the secondary cooling zone, which is a support roller segment 5b without employment.
- the support roller segment 5 is followed by further support roller segments 5 which are arranged in an arc to the horizontal. These support roller segments 5 can be designed differently.
- the casting strand 1 is transported therein by means of driven support roller pairs 6, individual support rollers 6a, which can be adjusted, driven or not driven.
- the support roller pairs 6 also form groups 7 of support rollers (FIGS. 2A and 2B) or support roller pairs 7a.
- the inflow of the liquid steel material can also be regulated via various plug positions 8.
- the melt pool level 9 is regulated in the continuous casting mold 4. All of the elements, components or functions described have signal transmitters 10.
- the roller spacing is set via hydraulic piston-cylinder units 11, in whose cylinder spaces such signal transmitters are also arranged are.
- the signals from the signal generators 10 are routed to a central memory and computer unit 12.
- the support roller segments 5 also form a fixed side 13a (left side) and a loose side 13b (right side).
- the casting strand 1 moves out of the continuous casting mold 4 through the series of the support roller stands 5 in the direction of the strand 14.
- the method is based on an indirect measurement of the displaceable amount of the core liquid volume in the strand sump 1d, which is shown in FIGS. 2A and 3A in the casting strand thickness 1b with the width 1c in the sump tip 1a and within the strand sump 1d over the thickness 1b (and an invisible width perpendicular to the plane of the drawing).
- the signal transmitters 10 send measurement signals (per unit length or in the full length of the measurable strand sump 1d) and are given as process parameters in the central memory and computer unit 12 (FIG. 1).
- the signals arise primarily via force and / or displacement measurements on the fixed or adjustable individual support rollers 6a or the groups 7 of fixed or adjustable support roller pairs 7a.
- a model calculation 15 (computer program) is created for the current position of the sump tip 1 a, after which, if it is necessary at all, the measured points are again corrected individually or depending on a process control 16 by to adapt the casting parameters to a changed situation.
- a measurement signal can correspond to a local change in the casting strand thickness 1b.
- Other measurement signals can be based on a change in the plug position 8 or a slide position there in the intermediate container 3 in front of the continuous casting mold 4. Further measurement signals arise from changes in the melt pool level 8 in the continuous casting mold 4. The same can be done with measuring signals of the cooling medium temperatures in the continuous casting mold 4.
- measurement signals relating to the effects of a variable volume supply of liquid steel material between the intermediate container 3 and the continuous casting mold 4 can also be taken into account.
- Significant measurement signals arise from changes in the clamping forces between the support roller pairs 7a or between the support roller segment sides 5a.
- an automatic adjustment of a support roller segment 5 or an employed support roller 6a is carried out via process signals 17.
- a sequence of changes in position or force can be carried out in a uniform system direction on the casting strand 1 from bottom to top or (vice versa) in the strand running direction 14.
- the measurement signals to be used for the model calculation 15 can be selected as a single measurement signal, as groups of selected measurement signals or as a total number of all measurement signals.
- support roller segments 5 are provided on the fixed side 13a and on the loose side 13b, the roller spacing of which form the casting strand thickness 1b.
- the strand sump 1d has continuously reduced widths 1c up to the sump tip 1a.
- the support roller segment side 5a the support roller segment 5 is pivoted inwards or outwards as a group 7 at the ends by pairs of hydraulic piston-cylinder units 11 according to FIG. 2B, each pivoted on the basis of the measurement signals, a parallel Ver - Position (left illustration), a position swung in at the bottom as the casting strand 1 becomes colder (middle illustration) and a position swung out below (right illustration).
- FIGS. 3A and 3B The local changes of the casting strand thickness 1b mentioned are recorded in FIGS. 3A and 3B: during the adjustment movements according to FIG. 2B, the individual support rollers 6a can additionally be readjusted in the arrow directions shown in FIG. 3B.
- support roller pairs 7a are provided, the individual rollers of which are designed to be adjustable.
- Such individual rollers can be designed as a driven support roller pair 6, only one of the support rollers being adjustable.
- the casting strand 1 is drawn horizontally in the direction of strand 14, but this also applies to the vertical and / or the arcuate region of the strand guide.
- Such individual support rollers 6a are used idling (left) or driven (right).
- a driven and adjustable single support roller 6a can also be used in combination with a non-driven but adjustable single support roller 6a.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05700872A EP1706233A1 (de) | 2004-01-20 | 2005-01-13 | Verfahren und einrichtung zum bestimmen der lage der sumpfspitze im giessstrang beim stranggiessen von flüssigen metallen, insbesondere von flüssigen stahlwerkstoffen |
US10/586,799 US8006743B2 (en) | 2004-01-20 | 2005-01-13 | Method and device for determining the position of the solidification point |
JP2006549972A JP2007518572A (ja) | 2004-01-20 | 2005-01-13 | 溶けた金属、特に溶けた鋼鉄材料の連続鋳造時に鋳造ストランド内の湯溜り尖端部の位置を決定するための方法及び装置 |
CA002552890A CA2552890A1 (en) | 2004-01-20 | 2005-01-13 | Method of and device for determining a position of the solidification point in a strand during continuous casting of liquid metal, in particular liquid steel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004002783.8 | 2004-01-20 | ||
DE102004002783A DE102004002783A1 (de) | 2004-01-20 | 2004-01-20 | Verfahren und Einrichtung zum Bestimmen der Lage der Sumpfspitze im Gießstrang beim Stranggießen von flüssigen Metallen, insbesondere von flüssigen Stahlwerkstoffen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005068109A1 true WO2005068109A1 (de) | 2005-07-28 |
Family
ID=34716692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/000256 WO2005068109A1 (de) | 2004-01-20 | 2005-01-13 | Verfahren und einrichtung zum bestimmen der lage der sumpfspitze im giessstrang beim stranggiessen von flüssigen metallen, insbesondere von flüssigen stahlwerkstoffen |
Country Status (8)
Country | Link |
---|---|
US (1) | US8006743B2 (de) |
EP (1) | EP1706233A1 (de) |
JP (1) | JP2007518572A (de) |
KR (1) | KR20060121279A (de) |
CN (1) | CN100409975C (de) |
CA (1) | CA2552890A1 (de) |
DE (1) | DE102004002783A1 (de) |
WO (1) | WO2005068109A1 (de) |
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WO2006037555A1 (de) * | 2004-10-06 | 2006-04-13 | Sms Demag Ag | Verfahren und rollensegment zum bestimmen der kernerstarrung und/oder der sumpfspitze beim stranggiessen von metallen, insbesondere von stahlwerkstoffen |
JP2007268559A (ja) * | 2006-03-31 | 2007-10-18 | Jfe Steel Kk | 連続鋳造鋳片の凝固完了位置制御方法及び装置並びに連続鋳造鋳片の製造方法 |
DE102008014524A1 (de) | 2007-12-28 | 2009-07-02 | Sms Demag Ag | Stranggießanlage mit einer Vorrichtung zur Bestimmung von Erstarrungszuständen eines Gießstrangs und Verfahren hierfür |
DE102009031651A1 (de) | 2009-07-03 | 2011-01-05 | Sms Siemag Aktiengesellschaft | Verfahren zum Bestimmen der Lage der Sumpfspitze eines gegossenen Metallstrangs und Stranggießanlage |
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2004
- 2004-01-20 DE DE102004002783A patent/DE102004002783A1/de not_active Withdrawn
-
2005
- 2005-01-13 WO PCT/EP2005/000256 patent/WO2005068109A1/de active Application Filing
- 2005-01-13 CN CNB2005800027179A patent/CN100409975C/zh active Active
- 2005-01-13 EP EP05700872A patent/EP1706233A1/de not_active Ceased
- 2005-01-13 KR KR1020067013616A patent/KR20060121279A/ko active IP Right Grant
- 2005-01-13 JP JP2006549972A patent/JP2007518572A/ja active Pending
- 2005-01-13 US US10/586,799 patent/US8006743B2/en not_active Expired - Fee Related
- 2005-01-13 CA CA002552890A patent/CA2552890A1/en not_active Abandoned
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WO2006037555A1 (de) * | 2004-10-06 | 2006-04-13 | Sms Demag Ag | Verfahren und rollensegment zum bestimmen der kernerstarrung und/oder der sumpfspitze beim stranggiessen von metallen, insbesondere von stahlwerkstoffen |
JP2007268559A (ja) * | 2006-03-31 | 2007-10-18 | Jfe Steel Kk | 連続鋳造鋳片の凝固完了位置制御方法及び装置並びに連続鋳造鋳片の製造方法 |
DE102008014524A1 (de) | 2007-12-28 | 2009-07-02 | Sms Demag Ag | Stranggießanlage mit einer Vorrichtung zur Bestimmung von Erstarrungszuständen eines Gießstrangs und Verfahren hierfür |
WO2009083231A1 (de) | 2007-12-28 | 2009-07-09 | Sms Siemag Ag | Stranggiessanlage mit einer vorrichtung zur bestimmung von erstarrungszuständen eines giessstrangs und verfahren hierfür |
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 |
DE102010014347A1 (de) | 2010-04-09 | 2011-10-13 | Sms Siemag Ag | Verfahren und Vorrichtung zum Einstellen der Lage der Sumpfspitze in einem Gießstrang |
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
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US20080308251A1 (en) | 2008-12-18 |
CN1909995A (zh) | 2007-02-07 |
DE102004002783A1 (de) | 2005-08-04 |
CA2552890A1 (en) | 2005-07-28 |
EP1706233A1 (de) | 2006-10-04 |
KR20060121279A (ko) | 2006-11-28 |
US8006743B2 (en) | 2011-08-30 |
CN100409975C (zh) | 2008-08-13 |
JP2007518572A (ja) | 2007-07-12 |
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