EP1071529A1 - Procede et dispositif pour la coulee continue de feuillards metalliques minces - Google Patents
Procede et dispositif pour la coulee continue de feuillards metalliques mincesInfo
- Publication number
- EP1071529A1 EP1071529A1 EP99920656A EP99920656A EP1071529A1 EP 1071529 A1 EP1071529 A1 EP 1071529A1 EP 99920656 A EP99920656 A EP 99920656A EP 99920656 A EP99920656 A EP 99920656A EP 1071529 A1 EP1071529 A1 EP 1071529A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strand
- driver
- thickness
- pair
- rollers
- 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
Links
- 238000005266 casting Methods 0.000 title claims abstract description 26
- 239000002184 metal Substances 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 title claims description 13
- 238000009749 continuous casting Methods 0.000 claims abstract description 19
- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 230000009467 reduction Effects 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 7
- 238000007711 solidification Methods 0.000 claims description 7
- 230000008023 solidification Effects 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 abstract description 16
- 230000001965 increasing effect Effects 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000013138 pruning Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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 the continuous casting of thin metal strips in a continuous casting plant with an oscillating water-cooled mold, a vertical strand guide arranged underneath with devices for pruning and cooling the strand until it is pierced, one or more pairs of driver rollers used for propping and Requirement of the strand to be pressed against the strand, a device for bending the strand and a device for bending back the strand
- W4 + 9/319 / SMS Schloemann-Siemag Aktiengesellschaft / 4000/8/87 typically consists of an oscillating mold, one vertical strand guide underneath with water nozzles for cooling the strand until it solidifies and one or more driven roller pairs for challenging the strand Security excludes a special feature of this r Continuous caster is the arrangement of the driver rollers to challenge the strand below the solidification point, with the absence of the liquid core in the strand Ensures that the strand does not give in to the driver roller pressure and that a sufficiently large tensile force is generated on the strand.
- the state of the art here is to press the driver rollers onto the strand with hydraulic cylinders, the pressure being unchangeable during the casting process Casting of low-carbon and austenitic stainless steels also preserved
- casting steels which are very soft at temperatures of 1100 * C, such as Si-alloyed steels, rustproof ferritic steels, high-carbon steels, however, the roller pressure necessary to generate the challenge force leads to a reduction in the thickness of the strand
- the required contact pressure of the driver rollers is set much higher in practice than would actually be sufficient to surely eliminate the risk of the driver rollers slipping, which means that the strand gets stuck Due to this increased pressure, the strand is rolled in an uncontrolled manner by the driver rollers with thickness reductions of, for example, up to 8 mm at 60 mm strand thickness
- the strength of the strand changes depending on all the casting parameters that influence the strand temperature, such as the temperature of the melt, casting speed, intensity of the secondary cooling, the reduction in thickness of the strand is a variable and cannot be influenced with an unchanged driver pressure
- roller pressure In order to avoid the undesired, uncontrolled rolling of the strand by the driver rollers, the roller pressure must not exceed a certain value
- the required force can then be achieved by increasing the number of pairs of rollers, increasing the diameter of the rollers and driving all the rollers
- the stated task is procedurally with the measures of the characterizing part of claim 1 in a method for the continuous casting of thin metal strips in a continuous casting plant with an oscillating, 4
- this rolling is carried out in a controlled manner with a total strand thickness reduction of at least 2%.
- the thickness reduction is at least 2% so great that slipping of the driven rollers is excluded and it can be so large that the advantages of an increased strand thickness in the range the mold and secondary cooling come into their own
- This controlled reduction in the thickness of the strand, while at the same time keeping a preset target strand thickness constant by at least one pair of driver rollers, is achieved according to the invention in that at least one pair of driver rollers demanding the strand is continuously pressed against the strand with a variable, defined pressure immediately after it has solidified Roll spacing, which corresponds to the strand thickness, recorded by measurement and in a measuring and control device with the preset strand thickness 5
- the contact pressure with which the pair of driver rollers is pressed against the strand is controlled "online" via a hydraulic pump, which is connected to the measuring and regulating device, so that the specified target strand thickness is always maintained and is maintained
- the driver roller pairs demanding the strand are pressed with a variable contact pressure against portable stops, depending on the desired target strand thickness, the portable stops are brought into corresponding positions, so that there is a constant roller spacing corresponding to the target strand thickness
- the pressure is at least so great that the roller spacing remains unchanged in normal casting operation and it is thereby ensured that the roller pairs can open when passing through the cold strand or in the event of casting defects
- the alternative options shown are not only applicable individually, but can also be combined with one another.
- the total thickness decrease according to the invention is at least 2%. 6
- Rolling the solidified strand regardless of which steel, also allows the strand thickness in the area of the mold to be increased without reducing the casting performance, which results in known improvements in the steel quality.
- Controlled rolling by means of the driver rollers also makes it possible to thin the strand to produce that can be wound up without impairing the quality, which results in new advantageous system concepts
- a continuous casting installation consists of a strand guide arranged vertically below an oscillating mold with devices for pruning and cooling and, if necessary, for squeezing the strand until it solidifies, at least one pair of driver rollers which are pressed against the strand for supporting and for the strand to be supported, a device for bending the strand and a device for bending back the strand
- At least one pair of drive rollers is connected directly below the solidification point of the strand with means for generating a variable contact pressure.
- These means which can be piston units fed by a hydraulic pump, are with a measurement - and control device connected
- the measurement and control device continuously measures the current strand thickness between the pair of driver rollers via a sensor, for example an inductive displacement sensor, compares this measured value with a preset setpoint and controls "online" the contact pressure to be applied by the corresponding piston-cylinder unit in the event of deviations from this setpoint 7
- At least one pair of driver rollers has movable stops against which the pressing means, for example piston-cylinder units, are pressed with a variable contact pressure.
- the moveable stops are designed so that a pre-set roller distance cannot be fallen short of, while the desired roller distance is prevented by the contact pressure, and is only possible when passing through the cold strand and in the event of casting malfunctions.
- 1 is a flow diagram of a part of a continuous caster with "online" -
- Fig. 2 is a flow diagram of part of a continuous caster with two permanent driver roller pairs.
- the part of a continuous casting installation (1) shown in FIG. 1 consists of an oscillating mold (2), from which the casting strand (7) with a thickness (d ⁇ ) emerges vertically downward.
- the vertical strand guide (3) with devices for supporting and cooling and, if necessary, for crushing the strand (7) to the thickness (d2) -
- the initially liquid casting strand (7) solidifies on its way down by forced cooling in the region of the vertical strand guide (3) from the outside inwards, the liquid core (6) becoming smaller and smaller at the solidification point (17) of the strand as a whole Cross section is solidified. Because of the 8th
- the strand temperature is still very high, but the strand (7) is still very soft, so that the controlled rolling of the strand with the driver roller pairs (4, 5) according to the invention can be used in this strand region.
- two pairs of driver rollers (4, 5) are arranged one below the other in the exemplary embodiment in FIG. 1 directly below the solidification point (17). These two pairs of driver rollers (4, 5) not only support the strand (7) and convey it further downward, but also roll it in a controlled manner. The rolling takes place starting from the starting strand thickness (d2), first through the driver roller pair (4) with the contact pressure (pi) to the strand thickness (d3) and then through the next driver roller pair (5) with the contact pressure (P2) to the strand thickness (d4 ), which should correspond to the desired target strand thickness (d so n).
- the reduction in strand thickness achieved in this controlled rolling should be at least 2%, based on the starting strand thickness (d2) - in order to meet the two requirements for a minimum strand thickness reduction and keeping the strand thickness (d4) constant to the desired strand thickness (d so n) Strand thicknesses (d3) and (d4) "online” continuously measured during the entire casting process and adjusted accordingly in the event of deviations. This is done as follows:
- driver roller of the driver roller pairs (4, 5) is pressed with a piston rod (21, 22) of a piston-cylinder unit (11, 12) with the pressure (P1, P2) against the strand (7) while the respective opposite driver roller attaches itself supports a structural part (18).
- the position of the piston rods (21, 22), which are a measure of the distance between the two driver rollers from each other for a pair of driver rollers (4, 5), is determined by a suitable one
- Measured value detectors (19, 20) - for example an inductive displacement sensor - are represented as an electrical signal (d3 ', d4') and this signal (d3 ', d4') is continuously fed into a measuring and control device (10).
- a measuring and control device (10) all measurement data of the driver roller pairs (4, 5) involved in the controlled rolling are entered and the total thickness reduction of the strand (7) is compared with the predetermined target strand thickness (d so n).
- the measuring and regulating device (10) regulates the necessary, possibly different contact pressure (P1, P2) for the piston-cylinder units (11/12) of the driver roller pairs () via corresponding control signals that flow into the hydraulic pump (9). 4, 5).
- FIG 2 a further embodiment of the invention is shown, wherein the driver roller pairs (4, 5) of the continuous casting system (1 ') in this example are also pressed by a piston-cylinder unit (13, 14) against the solidified strand (7), but with the Difference in that the contact pressure (P3) additionally acts against movable stops (15) via projections (16) arranged on the piston rods (23, 24) of the piston-cylinder units (13, 14).
- the drive roller gap widths (d3, d4) specified by the stops can therefore no longer be fallen short of, since this prevents the stops (15).
- Exceeding the predetermined drive roller gap widths (d3, d4) is prevented in a simple manner by selecting the pressure (P3) higher than is necessary for the conveyance of the strand.
- This increased pressure (P3) which is so high that the driving roller gap widths (d3, d4) remain unchanged in normal casting operation, does not lead to an uncontrolled rolling of the strand - as in known continuous casting plants - but it acts because it directed against a fixed stop (15), no further negative.
- the pressure (P3) should not be excessively high, the pressure can be reduced at any time, for example in the event of malfunctions in the casting operation 10
- the pressure (P3) can also be adjusted via the pump (9).
- the stops (15) are designed so that they can be moved in order to be able to divide any desired drive roller gap width.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Metal Rolling (AREA)
- Forging (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19817034 | 1998-04-17 | ||
| DE19817034A DE19817034A1 (de) | 1998-04-17 | 1998-04-17 | Verfahren und Vorrichtung zum Stranggießen von dünnen Metallbändern |
| PCT/EP1999/002487 WO1999054072A1 (fr) | 1998-04-17 | 1999-04-14 | Procede et dispositif pour la coulee continue de feuillards metalliques minces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1071529A1 true EP1071529A1 (fr) | 2001-01-31 |
| EP1071529B1 EP1071529B1 (fr) | 2004-09-29 |
Family
ID=7864824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99920656A Expired - Lifetime EP1071529B1 (fr) | 1998-04-17 | 1999-04-14 | Procede pour la coulee continue de feuillards metalliques minces |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6491088B1 (fr) |
| EP (1) | EP1071529B1 (fr) |
| JP (1) | JP2002512128A (fr) |
| CN (1) | CN1304343A (fr) |
| AT (1) | ATE277705T1 (fr) |
| DE (2) | DE19817034A1 (fr) |
| WO (1) | WO1999054072A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8186422B2 (en) | 2005-12-14 | 2012-05-29 | Sms Siemag Aktiengesellschaft | Method for the continuous casting of thin metal strip and continuous casting installation |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10137944A1 (de) | 2001-08-07 | 2003-02-20 | Sms Demag Ag | Warmwalzanlage |
| DE10302265A1 (de) * | 2003-01-22 | 2004-07-29 | Sms Demag Ag | Verfahren und Vorrichtung zur Erzeugung von stranggegossenen Stahlbrammen |
| DE102004002783A1 (de) * | 2004-01-20 | 2005-08-04 | Sms Demag Ag | Verfahren und Einrichtung zum Bestimmen der Lage der Sumpfspitze im Gießstrang beim Stranggießen von flüssigen Metallen, insbesondere von flüssigen Stahlwerkstoffen |
| CN100427229C (zh) * | 2005-07-26 | 2008-10-22 | 北京交通大学 | 一种钢背铝基复合板液液相复合方法及装置 |
| CN100396391C (zh) * | 2005-09-01 | 2008-06-25 | 中冶东方工程技术有限公司 | 薄带钢铸轧生产工艺 |
| ITRM20050523A1 (it) * | 2005-10-21 | 2007-04-22 | Danieli Off Mecc | Processo e impianto per la produzione di nastro metallico. |
| EP2038082B1 (fr) * | 2006-07-07 | 2011-02-16 | Rotelec | Procede de coulee continue de produits metalliques plats a brassage electromagnetique et installation de mise en uvre |
| DE102007016045A1 (de) * | 2007-03-30 | 2008-10-02 | Sms Demag Ag | Vorrichtung zum hydraulischen Anstellen von Bauteilen |
| CA2947828C (fr) * | 2014-05-14 | 2019-01-15 | Nippon Steel & Sumitomo Metal Corporation | Procede de coulee continue de brame |
| CN104972180B (zh) * | 2015-06-19 | 2017-06-06 | 湖州超宇木工工具有限公司 | 一种夹导杆侧面齿形加工装置 |
| TWI639475B (zh) * | 2016-02-02 | 2018-11-01 | 新日鐵住金股份有限公司 | 鑄片彎曲檢測裝置、及鑄片彎曲檢測方法 |
| IT201800006563A1 (it) * | 2018-06-21 | 2019-12-21 | Impianto e procedimento per la produzione di un nastro metallico laminato a caldo | |
| CN113942777B (zh) * | 2021-10-15 | 2023-05-30 | 联亚智能科技（苏州）有限公司 | 柔性吸音降噪物料的输送装置及定长输送系统 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4056140A (en) * | 1976-10-20 | 1977-11-01 | United States Steel Corporation | Method and mechanism for controlling forces in a continuous-casting machine |
| DE3907905C2 (de) | 1988-07-04 | 1999-01-21 | Mannesmann Ag | Stranggießverfahren |
| DE3822939C1 (en) * | 1988-07-04 | 1989-10-05 | Mannesmann Ag, 4000 Duesseldorf, De | Continuous casting method for the production of slabs with a reduced thickness relative to the cast condition |
| IT1262116B (it) | 1993-05-17 | 1996-06-19 | Danieli Off Mecc | Procedimento di prelaminazione controllata per bramme sottili uscenti da colata continua e dispositivo relativo |
| IT1252847B (it) | 1991-10-31 | 1995-06-28 | Danieli Off Mecc | Gruppo di prelaminazione controllata per bramme sottili uscenti da colata continua |
| DE4243857C1 (de) * | 1992-12-23 | 1994-07-28 | Thyssen Stahl Ag | Verfahren zum Herstellen eines Stahlbandes durch Gießen eines Stranges und anschließendes Walzen |
| DE69601409T2 (de) * | 1995-11-28 | 1999-09-02 | Danieli Off Mecc | Verfahren und Vorrichtung zum geregelten Vorwalzen von aus einer Stranggiessanlage austretenden Dünnbramme |
-
1998
- 1998-04-17 DE DE19817034A patent/DE19817034A1/de not_active Ceased
-
1999
- 1999-04-14 WO PCT/EP1999/002487 patent/WO1999054072A1/fr active IP Right Grant
- 1999-04-14 DE DE59910665T patent/DE59910665D1/de not_active Expired - Lifetime
- 1999-04-14 JP JP2000544456A patent/JP2002512128A/ja not_active Withdrawn
- 1999-04-14 EP EP99920656A patent/EP1071529B1/fr not_active Expired - Lifetime
- 1999-04-14 US US09/673,534 patent/US6491088B1/en not_active Expired - Fee Related
- 1999-04-14 AT AT99920656T patent/ATE277705T1/de active
- 1999-04-14 CN CN99807082A patent/CN1304343A/zh active Pending
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9954072A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8186422B2 (en) | 2005-12-14 | 2012-05-29 | Sms Siemag Aktiengesellschaft | Method for the continuous casting of thin metal strip and continuous casting installation |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59910665D1 (de) | 2004-11-04 |
| WO1999054072A1 (fr) | 1999-10-28 |
| ATE277705T1 (de) | 2004-10-15 |
| CN1304343A (zh) | 2001-07-18 |
| EP1071529B1 (fr) | 2004-09-29 |
| DE19817034A1 (de) | 1999-10-21 |
| JP2002512128A (ja) | 2002-04-23 |
| US6491088B1 (en) | 2002-12-10 |
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