EP1991379A1 - Continuous casting plant and method of operating a continuous casting plant - Google Patents
Continuous casting plant and method of operating a continuous casting plantInfo
- Publication number
- EP1991379A1 EP1991379A1 EP07723100A EP07723100A EP1991379A1 EP 1991379 A1 EP1991379 A1 EP 1991379A1 EP 07723100 A EP07723100 A EP 07723100A EP 07723100 A EP07723100 A EP 07723100A EP 1991379 A1 EP1991379 A1 EP 1991379A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strand
- continuous casting
- casting plant
- driving
- exclusively
- 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
- 238000009749 continuous casting Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005452 bending Methods 0.000 claims abstract description 36
- 238000001816 cooling Methods 0.000 claims description 17
- 230000008859 change Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000005266 casting Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000003462 Bender reaction Methods 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000013024 troubleshooting Methods 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
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1282—Vertical casting and curving the cast stock to the horizontal
-
- 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/043—Curved moulds
-
- 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
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
-
- 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
- B22D11/142—Plants for continuous casting for curved casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/20—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures
- B66C23/201—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures with supporting couples provided from above, e.g. by ceilings of buildings
Definitions
- the invention relates to a continuous casting plant, in particular for continuous casting of thin slabs, which has a vertically disposed below a mold strand guide, wherein below the strand guide means for driving the cast strand and bending thereof are arranged in the horizontal. Furthermore, the invention relates to a method for operating a continuous casting plant.
- the starting point for this type of continuous casters are sheet or vertical turn-off plants with a casting radius usually between seven and twelve meters for larger casting thicknesses, in which the strand is bent or directed with liquid core.
- CSP Cosmetic Strip Production
- a continuous casting process is known for thin slabs, the thickness of which is usually between 45 and 70 mm, sometimes up to 90 mm, where the vertical design is common, in which the cast strand
- the advantage of the CSP plants is that the design of the plant can be kept simple, in particular with regard to the strand guide, for example, in the case of a strand breakthrough below the mold, the mold and the affected strand guiding elements can be combined with one Crane upwards or exchanged to be replaced. The effort for the change and thus the loss of production here are much lower than when using conventional arc segments that can not be upgraded upwards.
- a further advantage is that the strand is not bent or straightened until its final solidification. Therefore, the strand elongations are smaller; it is not to be feared that the sensitive inner side of the strand ruptures.
- Fig. 1 such a known continuous casting 1 is shown. From a mold 2, cast steel passes vertically downwards, the strand 6 thus produced being guided along a strand guide 3. Until the strand 6 leaves the strand guide 3 down, it is essentially solidified. It passes below the strand guide 3 in an area which are equipped with means 4, 5 for the combined driving and bending of the strand 6. To recognize are in the conveying direction of the strand 6, first two bending drivers that drive the strand 6 both in the conveying direction than apply it also with bending forces. The rollers of the bending driver 4, 5 are provided by moving means 11. The following rollers bend the strand 6 further in the direction of the horizontal H. Finally, the strand 6 leaves the system in the horizontal direction H to corresponding downstream devices. Only schematically illustrated is the cooling chamber 12 for cooling the strand 6.
- the available height of the strand guide it is desirable for the available height of the strand guide to be as large as possible and - for a given system height - the height of the bend of the strand to be as small as possible. Then that is the maximum way for the solidification of the strand before along the strand guide 3 before.
- the object of the present invention to develop a continuous casting apparatus of the type mentioned above and to provide a corresponding method for operating a continuous casting plant, that it is possible to maximize the height of the strand guide at the smallest height for driving, bending and straightening to use cast strand.
- the range of driving and bending should therefore be shortened in favor of a prolonged strand management.
- the device according to the invention is characterized in that, beneath the lower end of the strand guide of the continuous casting plant, a means for exclusively driving the cast strand and below the means for driving a means for exclusively bending the cast strand is arranged.
- the means for exclusively driving the cast strand has at least one pair of rollers, which along the direction transverse to the conveying direction of the strand a plurality of successive and mounted by center bearings part rolls.
- the means for exclusively driving the cast strand preferably consists only of a single pair of driven rollers. Only a single pair of rollers has proven sufficient and saves height for the driver, in favor of strand leadership.
- the means for exclusively driving the cast strand are fastened to a segment frame situated above this means, preferably releasably (eg by a screw connection) is.
- a segment frame situated above this means preferably releasably (eg by a screw connection) is.
- the means for exclusively driving the cast strand is housed according to a very advantageous development, at least partially in a cassette which is arranged detachably in the continuous casting.
- the at least one pair of rollers is completely housed in the cassette.
- At least one roller of the roller pair or the roller pair can be moved in total via a moving means in the direction normal to the surface of the strand.
- a moving means in the direction normal to the surface of the strand.
- the role of the fixed side can be moved by hydraulic cylinders.
- the said movement may be required both to place the driver just below the strand guide and in alignment with the casting strand.
- this movement means but also a loading of the rollers carried on the strand surface.
- the rollers of the means for driving the strand can be subjected to force, optionally via separate force-generating elements, in the direction normal to the surface of the strand.
- the required contact force is generated, which is necessary for the transmission of a conveying movement.
- the force generating elements can be supported on the framework of the continuous casting plant or on a component firmly connected thereto. But it is possible that the force-generating elements are supported on the cassette.
- the cylinders for pressing the driver rollers to the strand can thus be fixed alternatively in the cassette or on the mainland, in particular in the cooling chamber of the continuous casting plant.
- the cylinder can be flanged to the cassette. This results in the advantage that without a cylinder, the driver cartridge fits through the tightly inserted 4-eccentric oscillation frame, which facilitates assembly and disassembly.
- the continuous casting plant further comprises a cooling chamber - as it is usual, as is said - and the means for exclusively driving the cast strand is arranged in the cooling chamber. It can be provided in particular that the lower bottom of the cooling chamber extends below the means for driving the cast strand and above the means for bending the cast strand.
- the method for operating such a continuous casting plant, in particular for producing thin slabs is characterized in that the cast strand is first guided vertically downwards through the strand guide and that the strand then below the lower end of the strand guide by means of exclusively driving the strand is downwardly conveyed, wherein the strand is then bent by a means for exclusively bending the strand from the vertical to the horizontal.
- the strand is preferably cooled in the region below the strand guide up to its outlet into the horizontal only in the region of the exclusive borrowing drive.
- the means for driving therefore only serve to drive the hot and cold strand.
- the means for bending only perform the functions of bending the strand, separating the hot strand from the cold strand, driving the dummy strand and supporting the hot strand.
- the strand In the field of strand guidance, the strand is not conveyed by driven rollers.
- the promotion is carried out exclusively by means of exclusive activity.
- the driver cassette By accommodating the means for driving only in a cassette and placing the cassette in the cooling chamber, the driver cassette can be changed up like a segment of the strand guide through the opening of the oscillating frame. This is easier and faster possible than the horizontal change of the individual driver roles, as has been done so far.
- the bending roller does not always have to be changed together with the driver role.
- the driver cassette can be changed as needed independently of the segments of the strand guide arranged above it. The driver rolls are thus in the proposed solution before the strand arc.
- the additional space for the strand guide is obtained by reducing the diameter of the preferably multiply divided rollers and by reducing the distances, in particular also by the fact that the driver rollers are arranged in the cooling chamber.
- the bending forces are absorbed by the driver rollers and do not get into the strand guide.
- the bending segment can be expanded upwards like the strand guide segments.
- FIG. 1 is a side view of a continuous casting machine according to the prior art
- FIG. 2 again the side view of FIG. 1 and in
- FIG. 4 shows the side view of a continuous casting plant according to the invention with the cooling chamber shown, 5 is an enlarged detail of the continuous casting according to FIG. 3,
- FIG. 6 shows an enlarged view of the lower end of the strand guide of the continuous casting plant with adjoining means for exclusively driving the strand and
- Fig. 7 is a perspective view of the unit shown in Fig. 6.
- FIGS. 2 and 3 the previously known solution according to FIG. 1 (in FIG. 2) and an embodiment according to the invention of a continuous casting installation 1 (in FIG. 3) can be seen in the synopsis. It can be seen first that at the same height of the plant, the length of the strand guide 3 below the mold 2 in the new solution is greater, whereby the above advantages are achieved. In the exemplary embodiment results in a 1,000 mm longer strand guide. This is achieved by immediately below the strand guide 3, a means 4 for exclusively driving the strand 6 is arranged, below which there is a means 5 for exclusively bending the strand 6. It is therefore - in contrast to the previously known solutions - no bending driver for the combined driving and bending of the strand longer available.
- the bending radius is also between 2.5 and 3.5 meters, making it significantly smaller than in bowing machines or vertical turn-off systems.
- Fig. 4 shows, only a single pair of rollers 7, 8 in the means 4 for driving only the strand 6 is present. Furthermore, it is clear from Fig. 4 that the cooling chamber 12 is placed here so that the means 4 are arranged above the bottom 13 of the cooling chamber 12, wherein the means 5 are positioned below the bottom 13, ie outside the cooling chamber. As is apparent from Fig. 5, the entire deflection of the strand 6 from the vertical V in the horizontal H is free of means for driving. Only after the strand 6 has substantially reached the horizontal H, aremaschineer standing. Rolling stands 14 available. This means that the strand 6 from the strand guide 3, in which there are no driven rollers themselves, are expelled only by the means 4 and no further drivers are present until the deflection of the strand 6 into the horizontal H.
- rollers 7, 8 are basically constructed in the same way as the rollers 15, 16 of the strand guide 3 to be seen above.
- the rolls of the strand guide consist of several sub-rolls 15 ', 15 ", 15” arranged transversely to the strand 6 in the direction Q transverse to one another. or 16 ', 16 ", 16'".
- the roles are supported by center bearings 9. This results in the possibility that the diameter of the rollers can be chosen smaller without having to accept disadvantages in terms of deflection of the rollers in purchasing. While usually rollers with a diameter of about 300 to 420 mm are common, can be used hereby rolls having a diameter of less than 300 mm. The higher (bending) forces in the rollers due to the smaller distances are easily absorbed by the center bearings 9.
- the rollers 7, 8 of the means 4 are housed in a cassette 10.
- This cassette can be assembled and disassembled as a whole.
- the adjustment of the position of the rollers 7, 8 takes place with means of movement 11, of which only one is shown in the form of a hydraulic piston-cylinder system.
- the productivity of the continuous casting machine can be substantially increased. It is also possible to set the system faster to other production conditions or to assemble and disassemble components of the system.
- the mentioned extension of the strand guide by 1,000 millimeters provided the opportunity to work with a higher casting speed, wherein in one embodiment a casting speed of up to 6 m / min was achieved.
- the thickness of the strand was in the range between 52 and 62 mm.
- the productivity could be increased by more than 10%.
- the said vertical change possibility by the Oszillationsrahmen has proved to be particularly advantageous.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006011385 | 2006-03-09 | ||
DE102006053016 | 2006-11-10 | ||
DE102006055443 | 2006-11-24 | ||
DE102007005778A DE102007005778A1 (en) | 2006-03-09 | 2007-02-06 | Continuous casting plant and method for operating a continuous casting plant |
PCT/EP2007/002005 WO2007101685A1 (en) | 2006-03-09 | 2007-03-08 | Continuous casting plant and method of operating a continuous casting plant |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1991379A1 true EP1991379A1 (en) | 2008-11-19 |
EP1991379B1 EP1991379B1 (en) | 2017-01-04 |
Family
ID=38055334
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07723100.9A Not-in-force EP1991379B1 (en) | 2006-03-09 | 2007-03-08 | Continuous casting plant and method of operating a continuous casting plant |
Country Status (8)
Country | Link |
---|---|
US (1) | US8100166B2 (en) |
EP (1) | EP1991379B1 (en) |
JP (1) | JP2009529426A (en) |
KR (1) | KR20080103522A (en) |
CA (1) | CA2642919A1 (en) |
DE (1) | DE102007005778A1 (en) |
MX (1) | MX2008011463A (en) |
WO (1) | WO2007101685A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101482334B1 (en) * | 2012-12-21 | 2015-01-13 | 주식회사 포스코 | Segment for continuous casting process |
DE102014224390A1 (en) | 2014-11-28 | 2016-06-02 | Sms Group Gmbh | Continuous casting plant for thin slabs |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1222337A (en) * | 1969-01-27 | 1971-02-10 | Fives Lille Cail | Continuous casting installation |
USB396916I5 (en) * | 1973-09-13 | 1976-03-02 | ||
JPS5850156A (en) * | 1981-09-04 | 1983-03-24 | Nippon Steel Corp | Continuous casting machine of low machine height and multipoints setting and curving type |
AT372025B (en) * | 1982-01-12 | 1983-08-25 | Voest Alpine Ag | CONTINUOUS CASTING PLANT |
ATE138835T1 (en) * | 1991-09-19 | 1996-06-15 | Schloemann Siemag Ag | METHOD AND SYSTEM FOR PRODUCING STEEL STRIP |
DE19637545B4 (en) * | 1996-09-14 | 2007-10-18 | Sms Demag Ag | Device for diverting a cast in a continuous casting thin slab strand from the vertical in a horizontal Ausförderrichtung |
DE19838774A1 (en) * | 1998-08-26 | 2000-03-02 | Schloemann Siemag Ag | Casting of steel strip comprises locating the guide roll below the circular arc section and detecting the break between strip and guide roll |
DE10024508A1 (en) * | 2000-05-18 | 2001-11-22 | Sms Demag Ag | Continuous casting of thin steel slabs uses a mold with a strand guiding device having additionally oscillating rollers for guiding and conveying a cast strand |
DE10049445A1 (en) * | 2000-10-06 | 2002-04-18 | Sms Demag Ag | Device for the continuous casting of metals, in particular steel, for the solidified bending process |
DE10206243A1 (en) * | 2002-02-15 | 2003-08-28 | Sms Demag Ag | Process for the continuous rolling of a metal strand, in particular a steel strand, which is dimensioned as a thin slab and has a casting speed, and associated continuous casting machine |
-
2007
- 2007-02-06 DE DE102007005778A patent/DE102007005778A1/en not_active Withdrawn
- 2007-03-08 EP EP07723100.9A patent/EP1991379B1/en not_active Not-in-force
- 2007-03-08 WO PCT/EP2007/002005 patent/WO2007101685A1/en active Application Filing
- 2007-03-08 US US12/224,700 patent/US8100166B2/en not_active Expired - Fee Related
- 2007-03-08 KR KR1020087019703A patent/KR20080103522A/en not_active Application Discontinuation
- 2007-03-08 CA CA002642919A patent/CA2642919A1/en not_active Abandoned
- 2007-03-08 MX MX2008011463A patent/MX2008011463A/en active IP Right Grant
- 2007-03-08 JP JP2008557666A patent/JP2009529426A/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2007101685A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102007005778A1 (en) | 2007-09-13 |
JP2009529426A (en) | 2009-08-20 |
EP1991379B1 (en) | 2017-01-04 |
US20090020259A1 (en) | 2009-01-22 |
MX2008011463A (en) | 2008-09-24 |
CA2642919A1 (en) | 2007-09-13 |
US8100166B2 (en) | 2012-01-24 |
KR20080103522A (en) | 2008-11-27 |
WO2007101685A1 (en) | 2007-09-13 |
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