EP2697010A1 - Verfahren und vertikalstranggiessanlage zum herstellen von dicken brammen aus einer metallischen schmelze - Google Patents
Verfahren und vertikalstranggiessanlage zum herstellen von dicken brammen aus einer metallischen schmelzeInfo
- Publication number
- EP2697010A1 EP2697010A1 EP12714654.6A EP12714654A EP2697010A1 EP 2697010 A1 EP2697010 A1 EP 2697010A1 EP 12714654 A EP12714654 A EP 12714654A EP 2697010 A1 EP2697010 A1 EP 2697010A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strand
- vertical
- driver
- steel strand
- steel
- 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
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
- B22D11/14—Plants for continuous casting
- B22D11/141—Plants for continuous casting for vertical casting
-
- 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
Definitions
- the invention relates to a method for producing thick slabs from a metallic melt on a vertical caster, wherein a steel strand with still liquid core poured in a vertical mold, in a subsequent, several strand guide segments having therein at least some driven and / or adjustable strand guide rollers
- the invention further relates to a vertical caster for
- Chill mold cavity a first segment mechanically fixed in thickness, two hydraulically actuated follower segments and five segments suitable for hydraulic soft reduction.
- Strand guide segments allow variable strand guidance with dynamic sub-load adjustment and soft-reduction zone adjustment to optimally reduce the strand at any time and under all casting conditions and to meet the segregation minimization requirements.
- a vertical caster of the type mentioned is known. With such a system, it is possible to avoid problematic bending, especially in slabs or steel strands thicker than 300 mm.
- Such a vertical strand guide is suitable at casting speeds of about 0.3 to 0.4 m / min. to produce up to 400 mm thick slabs or steel strands until the final solidification crack-free.
- the invention has for its object to provide a generic method and a vertical caster so educate that regardless of the resulting Warmstrangtemperaturprofil in the individual sections of the strand guiding devices to the discharge of the separated slab a consistent and high quality, i. concerning slab geometry, slab surface and slab internal quality, in particular also at 400 mm thickness exceeding slabs or steel strands, reach, due to the crack sensitivity or brittleness so far not with a continuous casting process, but only via block casting followed by
- Rolling process can be produced. This in particular for the production of crack-sensitive steel grades, alloyed steels, such as drilling alloys, general and high-strength steels, acid gas-resistant tube and boiler plates and heavy plates.
- This object is achieved by a method according to the invention that in the production of steel strands with a 300 mm lying, especially between 400 to 800 mm thickness and with format widths of 900 to 3,200 mm in a strand guide subsequent plant section without support and leadership of fürerstarrten Steel strand of it
- Detected deviation from the vertical and the steel strand is bent back by increasing or reducing the contact forces and / or position change of the unsupported section upstream or downstream strand guide rollers in the vertical, before the steel strand has reached the separator.
- the invention is based on the finding that in such large
- Thickness required by the hydraulic system for the employment of the mold downstream strand guide segments for example, up to nine segments, high pressures of about 25 MPa and the force exerted by the steel strand, opposing thermal forces an emigration of the
- Strand guide segment the unsupported plant section both upstream and downstream strand guide rollers, which may also be stored in segments, can be bent with these strand guide rollers of the steel strand with detected deviations in the vertical, before then the positioned in its uppermost position separating device, preferably a Flame cutter, has reached. If no migration or deviation is detected, these strand guide rollers hold the
- Preferred embodiments of the invention provide that the restoring forces or the forces holding the steel strand in the vertical are applied in a drive roller unit upstream of the unsupported installation section in the casting direction and / or by a strand driver downstream of the unsupported installation section. It is within the scope of the invention that specifically only individual
- Steel strand can be positioned changed position.
- these are preferably the strand guide rollers of the two last roller pairs in the casting direction and / or the strand guide rollers of the roller driver advantageously having two roller pairs.
- Driver roller unit a hard reduction can be performed so that it is in this case a driving reduction unit.
- the steel strand becomes completely solid
- Plant section is decoupled in the predetermined by the casting speed time window for starting the vertical continuous caster required cold run of the steel strand and discharged. The length of the unsupported
- Plant section is designed so that at the variable casting speeds to be operated vertical caster even at the maximum casting speed, eg 0.6 to 1 m / min, the time available sufficient to decouple the cold strand of the warm steel strand and thesisletonn.
- the strand drivers thus serve alternately once as a hot strand and once as a cold extruder driver, preferably designed as in the direction of the broad sides of the steel strand movable car.
- Plant section a deviations of the steel strand from the vertical one
- Direction finding measuring means is arranged, which forwards the determined actual values to a higher, central arithmetic unit for correcting the deviation by increasing or reducing the Anstelleau or position change at least some strand guide rollers that are upstream or downstream of the unsupported plant section.
- the measuring means is designed as an acted upon by a position-controlled hydraulic cylinder multi-functional role. This is traced so that it always rests on the broad side of the steel strand, so that any deviation from the vertical direction can be determined immediately.
- the multifunctional roll can also be used to decouple the cold strand from the cast steel strand by applying force.
- the trained with a suitably suitable head dummy strand can be retracted from above or preferably from below into the mold.
- the concept of the vertical continuous casting plant according to the invention provides that the unsupported plant section in the casting direction consists of driven, single-sided or double-sided driver roller pairs with the position-controlled hydraulic cylinders acting upon the driver rollers
- Driver roller unit is upstream. Depending on the positioning of the driver roller unit or one of their strand guide or driver rollers or their employment on the steel strand of the steel strand is bent back in the vertical direction. In addition, the driver roll unit can also serve to perform a hard reduction.
- the unsupported plant section for further supported and vertical steel strand guide in casting a at least two driven, one or two sided to be set with associated position-controlled hydraulic cylinders and / or to be acted upon by a bending force pairs of strand guide rollers
- the strand driver is designed as orthogonal to the casting direction movable unit in the
- Interplay with a second such orthogonal movable to the casting direction strand driver is used as a hot strip or cold extruder driver.
- the second strand driver operates correspondingly alternately in the works as
- a flame cutter traveling along with the steel strand is provided as a separating device.
- the flame cutter thus shifts during the separating cut from an uppermost to a dependent on the respective slab length lowermost position.
- a slab turner designed as a swiveling roller table is a separate one
- the strand guide consists of a vertical mold 2, which in the casting direction according to arrow 3, a mechanically fixed in thickness first strand guide segment 4, several (for example, six to eight) hydraulically salaried strand guide segments nl to, in these strand guide segments, the strand guide rollers 5 are arranged opposite to each other, a driver roller unit 6, an unsupported, no strand guide roles exhibiting system section 7, two strand drivers 8a and 8b, which can be retracted in the interplay - as indicated by the double arrows - in the strand guide, where they take over the function as a heat drive driver, as dashed lines framed indicated, a vertically moving, trained as a flame cutter 9
- Separator 10 and ultimately connect to take over a separated from the generated steel strand 1 1 slab length 1 1 a provided swivel gear 12.
- the spent by the pivoting operation 12 in the horizontal slab length 1 1 a is transported by a conveyor 13 in the direction of arrow 14.
- the unsupported system section 1 1 upstream driver roller unit 6 comprises three roller pairs 6a, 6b, 6c, each with driven
- a measuring means 16 formed as one of a position-controlled
- Strand driver 8a or 8b has according to the embodiment, two pairs of rollers with each driven strand guide rollers 5b, which - not shown - are also associated with position-controlled hydraulic cylinder or double cylinder. Both the measuring means 16 or its hydraulic cylinder 15 and the two lower roller pairs 6b, 6c of the driver roller unit 6 and the strand drivers 8a, 8b and the hydraulic cylinders of the strand guide rollers 5b mounted therein are connected to a central processing unit 19, as indicated by the dashed lines
- Driver roller unit 6 or by reducing or increasing the contact forces of the strand guide rollers 5a of these pairs of rollers 6b, 6c bent back into the vertical.
- the bending back of the steel strand 1 1 in the vertical by changing the position and / or reducing or increasing the contact forces of the strand guide rollers 5b of the unsupported system section 7th
- the hydraulic cylinder 17 with the measuring roller 18 of the measuring means 16 is used
- Strand guide rollers 5b of the strand driver 8a or 8b from each other may initially be sufficiently large, in particular when the steel strand 1 1 is bent back by the strand driver 8a or 8b or its strand guide rollers 5b in the vertical.
- the controllability allows any positioning and / or role employment.
- the dashed framed strand driver 8a is moved from its working position to its standby position shown by solid lines, while the strand driver 8b is moved to retract the cold strand 21 from the head change position shown by solid lines in the dashed framed working position until it after starting the vertical caster 1 and after the cold strand 21 was decoupled from the cast steel strand 1 1 in
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011016879 | 2011-04-13 | ||
PCT/EP2012/056285 WO2012139968A1 (de) | 2011-04-13 | 2012-04-05 | Verfahren und vertikalstranggiessanlage zum herstellen von dicken brammen aus einer metallischen schmelze |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2697010A1 true EP2697010A1 (de) | 2014-02-19 |
EP2697010B1 EP2697010B1 (de) | 2015-06-10 |
Family
ID=45974307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12714654.6A Not-in-force EP2697010B1 (de) | 2011-04-13 | 2012-04-05 | Verfahren und vertikalstranggiessanlage zum herstellen von dicken brammen aus einer metallischen schmelze |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2697010B1 (de) |
CN (1) | CN103648687B (de) |
RU (1) | RU2563388C2 (de) |
TW (1) | TWI496633B (de) |
WO (1) | WO2012139968A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT512681B1 (de) * | 2012-03-22 | 2016-08-15 | Primetals Technologies Austria GmbH | Vorrichtung und Verfahren zum kontinuierlichen Stranggießen eines großformatigen Stahlstrangs |
KR101511723B1 (ko) | 2013-03-15 | 2015-04-13 | 주식회사 포스코 | 주조 설비 및 이를 이용한 주조 방법 |
BR112018015432A2 (pt) * | 2016-02-02 | 2018-12-18 | Nippon Steel & Sumitomo Metal Corporation | equipamento de detecção de empenamento de placa e método de detecção de empenamento de placa |
CN108941493A (zh) * | 2018-08-30 | 2018-12-07 | 东北大学 | 一种实验室用小方坯立式连铸机辊列及其使用方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1220116B (it) * | 1987-07-30 | 1990-06-06 | Danieli Off Mecc | Dispositivo estrazione ed evacuazione colata continua verticale |
CN1155458A (zh) * | 1995-11-28 | 1997-07-30 | 丹尼利机械设备股份公司 | 离开连铸设备的薄板坯的可控预轧方法 |
JP3570225B2 (ja) * | 1998-06-30 | 2004-09-29 | Jfeスチール株式会社 | 厚鋼板用大断面鋳片の連続鋳造方法 |
DE19916173A1 (de) * | 1999-04-10 | 2000-10-12 | Sms Demag Ag | Verfahren und Vorrichtung zum Einstellen des Brammenprofils einer stranggegossenen Bramme, insbesondere einer Dünnbramme |
CN2887490Y (zh) * | 2006-01-10 | 2007-04-11 | 李铁铎 | 一种立式无缝钢管空心管坯连铸机 |
DE102006024761A1 (de) * | 2006-05-27 | 2007-11-29 | Sms Demag Ag | Vorrichtung zum Messen der Breite und/oder der Bandlage eines Metallbandes oder einer Bramme |
US7806164B2 (en) * | 2007-04-26 | 2010-10-05 | Nucor Corporation | Method and system for tracking and positioning continuous cast slabs |
DE102008020412A1 (de) * | 2007-08-24 | 2009-02-26 | Sms Demag Ag | Verfahren und Vorrichtung zum Herstellen eines Metallbandes durch Gießwalzen |
CN101391264B (zh) * | 2007-09-19 | 2011-02-02 | 中冶赛迪工程技术股份有限公司 | 一种薄中板连铸连轧生产的工艺方法 |
AT506823A1 (de) * | 2008-05-20 | 2009-12-15 | Siemens Vai Metals Tech Gmbh | Verfahren und stranggiessanlage zum herstellen von dicken brammen |
AT507590A1 (de) * | 2008-11-20 | 2010-06-15 | Siemens Vai Metals Tech Gmbh | Verfahren und stranggiessanlage zum herstellen von dicken brammen |
AT509109B1 (de) * | 2009-12-14 | 2013-12-15 | Siemens Vai Metals Tech Gmbh | Stranggiessanlage zum erzeugen eines giessstrangs |
CN201558941U (zh) * | 2009-12-25 | 2010-08-25 | 陕西多伦科技发展有限公司 | 采用平衡油缸自动检测、控制扇形段辊缝的装置 |
-
2012
- 2012-04-03 TW TW101111768A patent/TWI496633B/zh not_active IP Right Cessation
- 2012-04-05 EP EP12714654.6A patent/EP2697010B1/de not_active Not-in-force
- 2012-04-05 RU RU2013150511/02A patent/RU2563388C2/ru not_active IP Right Cessation
- 2012-04-05 CN CN201280018142.XA patent/CN103648687B/zh not_active Expired - Fee Related
- 2012-04-05 WO PCT/EP2012/056285 patent/WO2012139968A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2012139968A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN103648687A (zh) | 2014-03-19 |
EP2697010B1 (de) | 2015-06-10 |
CN103648687B (zh) | 2016-11-16 |
TWI496633B (zh) | 2015-08-21 |
TW201244849A (en) | 2012-11-16 |
RU2013150511A (ru) | 2015-05-20 |
RU2563388C2 (ru) | 2015-09-20 |
WO2012139968A1 (de) | 2012-10-18 |
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