EP1379344A1 - Ingot mold for a continuous casting installation for metal and method for influencing the taper angle of the sidewalls of the ingot mold - Google Patents
Ingot mold for a continuous casting installation for metal and method for influencing the taper angle of the sidewalls of the ingot moldInfo
- Publication number
- EP1379344A1 EP1379344A1 EP02732508A EP02732508A EP1379344A1 EP 1379344 A1 EP1379344 A1 EP 1379344A1 EP 02732508 A EP02732508 A EP 02732508A EP 02732508 A EP02732508 A EP 02732508A EP 1379344 A1 EP1379344 A1 EP 1379344A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- side wall
- mold
- mold cavity
- parabolicity
- 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
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000009749 continuous casting Methods 0.000 title claims abstract description 11
- 239000002184 metal Substances 0.000 title claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 7
- 238000009434 installation Methods 0.000 title abstract description 3
- 238000005266 casting Methods 0.000 claims description 7
- 230000005499 meniscus Effects 0.000 claims description 5
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 abstract description 8
- 238000001816 cooling Methods 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 238000012546 transfer Methods 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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/168—Controlling or regulating processes or operations for adjusting the mould size or mould taper
-
- 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
-
- 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
- B22D11/053—Means for oscillating the moulds
- B22D11/0535—Means for oscillating the moulds in a horizontal plane
Definitions
- the invention relates to a mold for a continuous casting installation for metal, in particular for steel, comprising a support frame on which two narrow side walls and two broad side walls are arranged, at least one of the respective side walls on its inner side, which points to a mold cavity formed by the walls, is provided with a parabolic taper.
- the invention also relates to a method for influencing the conicity.
- Partial areas should be influenced via a chamber system, which requires large differences in the specific pressure areas of the cooling liquid in the respective chambers.
- the cooling water which is intended to ensure optimal cooling of the mold, is superimposed with another task, which has an adverse effect on the cooling properties.
- the invention is therefore based on the object, a mold and a
- the essence of the invention is to equip a mold with means for influencing the conicity of the respective side wall, which is flexible in the operating state, in the sense of deformable, side wall, in particular narrow side wall, and with control means therefor, the influencing means comprising at least one mechanical pressure element, each of which is based on the side of the side wall facing away from the mold cavity exerts an adjustable pressure, and a desired overall parabolicity can be set by superimposing the deformation brought about by the respective pressure elements with the parabolic conicity.
- parabolic taper is understood to mean a parabolic contour approximating the strand shell shrinkage with the apex of the parabola at the lower end of the narrow side wall.
- the method it is proposed to determine the actual parabolicity of a narrow side wall with parabolic conicity and to set a target parabolicity of this narrow side wall by superimposing the actual parabolicity by means of a pressure influence of at least one mechanical pressure element, the respective pressure element being exercised via a defined adjustment path of a defined pressure p is moved onto the side of a narrow side wall which is flexible in the operating state and faces away from the mold cavity.
- the respective mechanical pressure elements comprise pressure pins.
- the term pressure pin does not restrict the pressure elements to training with an elongated body and a tip for selective or partial force application.
- a flat introduction of force should be achieved by the pressure pins to compensate for the respective curved side wall surface. This is possible by engaging pressure pins on the side wall via a flat intermediate piece, or by making the body or the end of the respective pressure pins not flat, but rather flat.
- the number of printing elements is not limited to a single printing element.
- a pressure element is arranged at the level of the meniscus of the liquid metal introduced.
- a plurality of pressure elements can preferably be arranged here in order to compensate for the bulge that forms at the level of the meniscus of the melt.
- This pressure element or these several pressure elements should preferably be arranged approximately centrally to the central longitudinal axis of the narrow side wall in order to distribute the introduction of the force evenly over the two parts of the narrow side wall.
- control means for moving the respective pressure elements comprise at least at least one drive.
- a computing unit is connected to this drive, which is preferably designed as a linear motor, into which a specific selection of operating parameters of the continuous casting process is incorporated and which transmits the actuating signals to the drive.
- the support frame of the mold comprises, on the respective mold sides, in particular on the narrow sides, an inner plate and an outer plate arranged parallel to this and spaced apart.
- the inner plate is directly connected to the side of the narrow side wall which faces away from the mold cavity, for example it is screwed onto it.
- the narrow side wall consists of a copper plate. The connection of the narrow side wall with the inner plate of the support frame creates a doubled wall that is deformable in the operating state.
- the two plates, i.e. the inner and outer plates are connected to each other on the top and bottom sides by means of support plates for reinforcement.
- receiving elements for one or more pressure pins are provided in one or two pieces, i.e. these receiving elements can be integrally formed or releasably arranged on the inner plate.
- These receiving elements are, for example, cuboid, preferably plate-shaped, extending across the width of the narrow side wall.
- One receiving element can therefore be provided for several or more receiving elements, each for one pressure pin.
- These receiving elements have a recess into which the first end of the pressure pin, i.e. the end that faces the mold cavity engages.
- the outer plate takes over the guiding function for the respective push pin.
- it has at least one opening which is shaped so that it corresponds to the cross section of the outer surface of the respective pressure pin.
- an opening is at the same height or approximately at the same height with a receiving element, each seen from the support plates.
- Figure 1 is a schematic overview of a continuous casting plant for steel with a mold according to the invention, the taper of the side walls is influenced by the method proposed by the invention.
- Fig. 2 shows schematically a section of a mold support frame with a narrow side wall, shown in section;
- FIG. 3 schematically shows the section A-A of FIG. 2nd
- Figure 1 gives a schematic overview of a continuous caster 1, in which the mold according to the invention is used.
- the continuous casting plant shown is intended to serve as an example for a large number of possible plant types.
- the mold according to the invention can serve as a plate mold for the production of slabs or blooms, as a tubular mold for the production of billets. The use for the production of thin slabs is also not excluded.
- the continuous caster 1 shown consists essentially of a ladle 2, from which the liquid metal 3 passes through a shadow pipe 4 into the distributor 5 and from there via a submerged nozzle 6 into the mold 7.
- the bottom of the mold is closed with the so-called cold strand.
- the strand 8 which has solidified in its edge zone is first of all with the help of the cold strand and later through the roar pulled from the mold 7.
- the strand 8 in the embodiment shown runs after exiting the mold 7 through a stirring coil 9 and then through a secondary cooling zone 10. After complete solidification, the strand can be cut up by moving cutting torches or scissors 12 and then arrives at sorting beds 13.
- FIG. 2 shows in section a narrow side wall region 14 of this mold, which in its entirety (not shown) each has two broad side walls and a further narrow side wall.
- the mold 7 comprises a support frame which, on the side of the respective narrow side walls 15, consists of two parallel spaced plates, namely an inner plate 16 and an outer plate 17, which in turn are on the top and end sides via support plates 18a, b in the form of elongated sheets are connected. These plates 16, 17 and support plates 18a, b form the so-called end plate carrier.
- the end plate carrier also has the function of sealing off the vertical cooling ducts incorporated into the narrow side wall 15 from the outside. The cooling water system will be discussed further below.
- the narrow side wall 15 or the copper plate forming this wall is detachably connected to the inner plate 16, namely with its side 16a facing the mold cavity F, for example by screwing, here indicated by 19a, b.
- the side 15a of the narrow side wall 15 facing the mold cavity or its "hot side” has a parabolically shaped contour or a parabolic taper P 0 .
- a receiving element 20 for a pressure pin 21 is integrally formed on the inner plate 16, namely on its side 16b facing away from the mold cavity.
- This receiving element 20 has - as the comparison with FIG. 3 shows - rectangular dimensions and extends entirely along the width of the inner plate 16. Approximately at the level of the meniscus of the melt and approximately in the center of the mold width (see FIG.
- the pressure pin 21 is arranged, the first end 22 of which, in the embodiment shown, has a conical shape comes into engagement with a corresponding recess 23 (only indicated schematically here) in the receiving element 20.
- the push pin body is held by the outer plate 17, which has a corresponding opening 24, whose dimensions correspond approximately to the cross section of the push pin 21.
- the pressure pin 21 is guided through this opening 24 of the outer plate 17 and also supported by this.
- the pressure pin 21 is provided with a drive 26, here a linear motor. In principle, all known drives are conceivable, which can bring about the desired movement or the adjustment path of the pressure element.
- the linear motor moves or moves the pressure pin 21, held by the outer plate 17, into the receiving element 20 or its receptacle 23 and back. If the pressure pin 21 or its first end 22 is moved into the receiving element 20 or moved by the drive over a certain adjustment path (the arrow indicates the adjustment path), the applied force is distributed over the area extending across the width of the narrow side wall 15 Receiving element 20 and from there onto the narrow side wall 15.
- the parabolic contour worked into the narrow side wall 15 is superimposed by the pressure influence or the resulting deformation of the inner plate 16 which is flexible under operating conditions and the flexible narrow side wall 15.
- the cooling water circuit for the mold or the narrow side wall 15 shown is not required for this deformation in the solution according to the invention.
- Figure 2 makes it clear that the cooling channels 27 introduced into the mold wall, which run parallel to the longitudinal axis of the mold, are connected to corresponding cooling water supply and drain lines 29a, b by means of pipe sockets 28a, b, which are integrally formed on the inner plate 16. It is advisable to make 15 blind holes as cooling channels in the narrow side wall.
- the actual parabolicity of the respective narrow side wall 15 is determined with a corresponding measuring device (see FIG. 1) and the corresponding information x together with a selection of current operating parameters, such as continuous casting speed, cooling, in particular also the type of steel to be cast with its individual solidification properties. etc. transmitted to a computer unit 33.
- the computer unit 33 calculates a target parabolicity and transmits corresponding control signals y to the drive 26 of the pressure element.
- the target parabolicity Ps is set by superimposing the actual parabolicity P 0 with the aid of a defined adjustment path of the pressure pin and thus a defined pressure application.
- the total results in a changed, desired parabolicity (tendon height).
- the parabolicity can thus be controlled and adapted to the current operating state by different adjustment paths of the linear drive.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Confectionery (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10118524 | 2001-04-14 | ||
DE10118524A DE10118524A1 (en) | 2001-04-14 | 2001-04-14 | Mold used in a continuous casting device comprises a supporting frame on which two narrow side walls and two wide side walls are arranged |
PCT/EP2002/003143 WO2002083342A1 (en) | 2001-04-14 | 2002-03-21 | Ingot mold for a continuous casting installation for metal and method for influencing the taper angle of the sidewalls of the ingot mold |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1379344A1 true EP1379344A1 (en) | 2004-01-14 |
EP1379344B1 EP1379344B1 (en) | 2004-07-21 |
Family
ID=7681529
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02732508A Expired - Lifetime EP1379344B1 (en) | 2001-04-14 | 2002-03-21 | Ingot mold for a continuous casting installation for metal and method for influencing the taper angle of the sidewalls of the ingot mold |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1379344B1 (en) |
AT (1) | ATE271433T1 (en) |
DE (2) | DE10118524A1 (en) |
WO (1) | WO2002083342A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005039994A1 (en) | 2005-08-24 | 2007-03-08 | Sms Demag Ag | Mold for a continuous casting plant |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1208333A (en) * | 1967-02-13 | 1970-10-14 | Sumitomo Metal Ind | Method of apparatus and mould for semicontinuously casting metal ingots |
AU559387B2 (en) * | 1982-03-18 | 1987-03-05 | University College Of Swansea, The | The use of a hydraulic squeeze film to lubricate the strand in continuous casting |
JPH05177310A (en) * | 1991-12-26 | 1993-07-20 | Sumitomo Metal Ind Ltd | Mold for continuous casting and method for controlling the shape of short side |
EP0686445B1 (en) * | 1994-06-06 | 2000-08-16 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Method to control the deformations of the sidewalls of a crystalliser, and continuous-casting crystalliser |
DE19508169C5 (en) * | 1995-03-08 | 2009-11-12 | Kme Germany Ag & Co. Kg | Mold for continuous casting of metals |
EP0807475B1 (en) * | 1996-04-30 | 2000-03-15 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Method to obtain transverse vibrations of the walls of the crystalliser in an ingot mould by means of a pulsation in the cooling fluid |
IT1288989B1 (en) * | 1996-09-25 | 1998-09-25 | Danieli Off Mecc | PROCEDURE FOR OBTAINING VIBRATIONS OF THE WALLS OF THE CRYSTALLIZER OF AN INGOT MILL BY MEANS OF ACTUATORS AND |
-
2001
- 2001-04-14 DE DE10118524A patent/DE10118524A1/en not_active Withdrawn
-
2002
- 2002-03-21 EP EP02732508A patent/EP1379344B1/en not_active Expired - Lifetime
- 2002-03-21 DE DE50200671T patent/DE50200671D1/en not_active Expired - Lifetime
- 2002-03-21 WO PCT/EP2002/003143 patent/WO2002083342A1/en not_active Application Discontinuation
- 2002-03-21 AT AT02732508T patent/ATE271433T1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO02083342A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE50200671D1 (en) | 2004-08-26 |
ATE271433T1 (en) | 2004-08-15 |
DE10118524A1 (en) | 2002-10-17 |
EP1379344B1 (en) | 2004-07-21 |
WO2002083342A1 (en) | 2002-10-24 |
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