EP4452536A1 - Kokille einer stranggiessanlage - Google Patents
Kokille einer stranggiessanlageInfo
- Publication number
- EP4452536A1 EP4452536A1 EP22843676.2A EP22843676A EP4452536A1 EP 4452536 A1 EP4452536 A1 EP 4452536A1 EP 22843676 A EP22843676 A EP 22843676A EP 4452536 A1 EP4452536 A1 EP 4452536A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- frame
- mold
- partial
- broadside
- sub
- 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
- B22D11/04—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
-
- 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
- B22D11/051—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds into moulds having oscillating walls
-
- 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
-
- 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
- B22D11/055—Cooling the 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
- B22D11/07—Lubricating the 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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/166—Controlling or regulating processes or operations for mould oscillation
Definitions
- the invention relates to a mold of a continuous casting plant.
- a metallic melt is conveyed into a cooled mold, in which the solidification of the melt begins.
- surface areas of the melt solidify to form a so-called strand shell, which encloses a metal core that is still liquid.
- a metallic cast strand which has the strand shell, is discharged from the mold and is then further cooled.
- the mold is often set in a vertically oscillating motion so that the cast strand does not stick to the inner surfaces of the mold and mold powder, which is used for lubrication, is better drawn in between the cast strand and the inner surfaces of the mold.
- oscillating marks pose a problem for further processing of the product, so that the product often has to be ground on the surface after continuous casting. This grinding is very time-consuming and expensive.
- the object of the invention is to reduce oscillating marks during continuous casting.
- the object is achieved according to the invention by a mold having the features of claim 1 .
- a mold of a continuous casting plant according to the invention comprises
- a clamping device which is set up to exert a clamping force acting between the partial frames on the partial frames
- a spring strip assembly is arranged on each sub-frame on opposite sides in the width direction, which guides the sub-frame, with each narrow-side copper plate having two end faces which each bear against a broad-side insert and have lubrication that reduces friction with the broad-side insert.
- the horizontal width direction denotes a horizontal direction in a plane lying centrally between the two broadside inserts.
- the mold according to the invention enables a horizontal oscillation of the broad sides of the mold in relation to the narrow sides in addition to a vertical oscillation of the mold.
- oscillation marks on the surface of the product produced in the continuous casting can be reduced or completely avoided, and thus the quality of the Product to be advantageously improved.
- the frame consists of two sub-frames, on each of which a broadside insert is arranged and which are held together by a clamping device.
- the sub-frames are each guided by two sets of spring strips, which absorb weight forces and forces acting from a cast strand produced in the mold.
- the oscillating drive comprises a first oscillating drive, preferably designed as a hydraulic cylinder, which is arranged on a first longitudinal frame of the mold on a side of the first partial frame facing away from the second partial frame and is coupled to the first partial frame, and a second Os zillationsantrieb, preferably designed as a hydraulic cylinder, which is arranged on a side facing away from the first sub-frame side of the second sub-frame on a second longitudinal frame of the mold and coupled to the second sub-frame.
- a first oscillating drive preferably designed as a hydraulic cylinder, which is arranged on a first longitudinal frame of the mold on a side of the first partial frame facing away from the second partial frame and is coupled to the first partial frame
- a second Os zillationsantrieb preferably designed as a hydraulic cylinder, which is arranged on a side facing away from the first sub-frame side of the second sub-frame on a second longitudinal frame of the mold and coupled to the second sub-frame.
- the aforementioned embodiment of the invention enables, on the one hand, a distribution of the forces generating the horizontal oscillations of the frame and, on the other hand, a symmetrization of these forces.
- At least one, preferably each, narrow-side copper plate has a rounding or a chamfer on the edges that are in contact with the broad-side copper plates and are essentially at right angles to the horizontal width direction, with the rounding having a radius between 0.1 mm and 3 mm, preferably between 0.3 mm and 1 mm, and the bevel has a dimension between 0.1 mm and 3 mm, preferably between 0.3 mm and 1 mm.
- This rounding or chamfer reduces friction and wear of the Copper plates also reduced. It is of course also conceivable that all edges that are in contact with the broadside copper plate have such radii or chamfers.
- broadside casters are arranged on the underside of each longitudinal frame, the roller axes of which each run in the width direction and are set up to guide a metallic cast strand emerging from the mold.
- each end face of the narrow-side copper plates has grooves in which a lubricant can be fed to the end face as lubrication.
- lubricant is fed via flexible hoses and pipes to the side of the narrow-side copper plates facing away from the strand and from there to the grooves.
- each end face has a wear strip, preferably made of sintered metal, with an integrated lubricant, preferably a solid lubricant, for example as lubrication.
- the aforementioned embodiment of the invention takes into account that during hori zontal movements of the frame relative to the narrow sides, the broad-side inserts arranged on the frame rub against the end faces of the narrow-side copper plates that lie against the broad-side inserts.
- the lubrication of the end faces advantageously reduces this friction.
- the first broadside insert has one on the first partial frame arranged support plate and a broadside copper plate arranged on the support plate and the second broadside insert has a support plate arranged on the second sub-frame and a broadside copper plate arranged on the support plate.
- the aforementioned embodiment of the invention takes into account the fact that broadside copper plates wear out relatively quickly due to their contact with the strands cast in the mold and therefore have to be replaced from time to time. It therefore makes sense to provide support plates for the broadside copper plates, on which the broadside copper plates can be arranged.
- the mold has two compensators for each sub-frame, through which cooling water can be supplied to the sub-frame and through which cooling water can be drained from the sub-frame and which compensate for horizontal movements of the sub-frame.
- the aforementioned embodiment of the invention takes into account that the broadside inserts and in particular their broadside copper plates must be cooled in order to be able to sufficiently cool a cast strand produced in the mold so that the cast strand forms a strand shell.
- compensators are therefore provided to supply the sub-frames with cooling water, which compensate for the hori zontal movements of the sub-frames.
- the cooling water conducted through the partial frames serves to cool the broadside inserts and in particular the broadside copper plates.
- the clamping device has two clamping units which are arranged on opposite sides of the frame in the width direction and which are designed to exert a clamping force on each of the sub-frames between the sub-frames to practice .
- each clamping unit has a hydraulic cylinder for generating the clamping force.
- the aforementioned embodiment of the invention enables the partial frames to be clamped on two sides. Compared to clamping on only one side, this advantageously enables symmetrical clamping of the partial frames on opposite sides in the width direction. As a result, forces acting on opposite sides of the partial frames in the width direction can be adjusted to one another, for example due to the clamping between the narrow sides and the partial frames. For example, it can be avoided in this way that a higher frictional force acts between the narrow sides and the partial frames on one side of the partial frames than on the other side.
- the clamping units arranged on the frames have swivel units on both sides, which allow movements of the frames in the horizontal width direction, at least temporarily in different directions.
- An expedient embodiment provides that the clamping force is set by a control and/or regulating device in such a way that a contact pressure between each narrow-side copper plate and the broad-side copper plates in contact with it is set in such a way that the contact pressure is immediately before the start of the Oscillations and during the oscillations by the oscillation drive, a value between 0 and 1 N/mm 2 , preferably 0 and 0.5 N/mm 2 .
- FIG. 2 shows a perspective view from below of the mold shown in FIG. 1,
- FIG. 3 shows a perspective sectional view of the mold shown in FIG.
- FIG. 4 shows a schematic representation of a mold of a continuous casting plant
- FIG. 5 shows a detailed representation of a narrow side plate with a radius
- FIG 1 shows a top perspective view of the mold 1.
- Figure 2 shows a bottom perspective view of the mold 1.
- Figure 3 shows a perspective sectional view of the mold 1.
- the mold 1 comprises, among other things, a movably mounted frame 2, two broad side inserts 3, 4, two narrow sides 7, 8, a clamping device 11, an oscillating drive 13, two longitudinal frames 14, 15, spring strip assemblies 17 and compensators 18.
- the frame 2 comprises a first partial frame 2.1 and a second partial frame 2.2 spaced apart from the first partial frame 2.1.
- Each broadside insert 3, 4 comprises a support plate 5 and a broadside copper plate 6.
- a first Broadside insert 3 is on one of the second partial frames 2 . 2 facing side of the first sub-frame 2 . 1 arranged .
- the support plate 5 of the first broad-side insert 3 is on the first partial frame 2 . 1 arranged .
- the broadside copper plate 6 of the first broadside insert 3 is arranged on a side of the support plate 5 of the first broadside insert 3 that faces the second broadside insert 4 .
- the support plate 5 of the first broadside insert 3 is connected to the first partial frame 2 . 1 is screwed and the broadside copper plate 6 of the first broadside insert 3 is screwed onto the support plate 5 of the first broadside insert 3 .
- the second broad-side insert 4 is on one of the first sub-frames 2 . 1 facing side of the second sub-frame 2 . 2 arranged .
- the support plate 5 of the second broad-side insert 4 is on the second partial frame 2 . 2 arranged .
- the broadside copper plate 6 of the second broadside insert 4 is arranged on a side of the support plate 5 of the second broadside insert 4 that faces the first broadside insert 3 .
- the support plate 5 of the second broadside insert 4 is connected to the second partial frame 2 . 2 is screwed and the broadside copper plate 6 of the second broadside insert 4 is screwed onto the support plate 5 of the second broadside insert 4 .
- the broadside copper plates 6 of the two broadside inserts 3 , 4 face each other and are spaced apart from each other.
- the narrow sides 7 , 8 of the mold 1 are arranged between the two broad side inserts 3 , 4 .
- Each narrow side 7 , 8 has a narrow side copper plate 9 which bears against the broad side copper plates 6 of both broad side inserts 3 , 4 , the narrow side copper plates 9 facing one another.
- the broad-side copper plates 6 and the narrow-side copper plates 9 thus form the inner walls of the mold 1 .
- the clamping device 11 has two clamping units 11.1, 11.2 which are arranged on the frame 2 on opposite sides in the horizontal width direction H and are set up to exert a clamping force acting between the partial frames 2.1, 2.2 on the partial frames 2.1, 2.2 of the frame 2.
- each clamping unit 11.1, 11.2 has a hydraulic cylinder 12 for generating the clamping force.
- the oscillation drive 13 is set up to move the frame 2 in the width direction H relative to the narrow sides 7, 8 and the longitudinal frames 14, 15 of the mold 1 in an oscillating manner.
- the oscillation drive 13 has two hydraulic cylinders 13.1, 13.2.
- a first hydraulic cylinder 13.1 is arranged on the first longitudinal frame 14 on a side of the first partial frame 2.1 facing away from the second partial frame 2.2 and is coupled to the first partial frame 2.1.
- the second hydraulic cylinder 13.2 is arranged on the second longitudinal frame 15 on a side of the second partial frame 2.2 that faces away from the first partial frame 2.1 and is coupled to the second partial frame 2.2.
- the frame 2 can thus be moved in the width direction H and counter to the width direction H relative to the longitudinal frames 14, 15 and the narrow sides 7, 8 by the two hydraulic cylinders 13.1, 13.2.
- the broad-side copper plates 6 rub against end faces 9.1 of the narrow-side copper plates 9 that rest against them.
- the end faces 9.1 of the narrow-side copper plates 9 in contact with the broad-side copper plates 6 each have a lubrication 10.
- each end face 9.1 has grooves in which a lubricant can be supplied as lubrication 10 to the end face 9.1.
- a grease or oil, for example, is used as the lubricant.
- each end face 9.1 has a wear strip with an integrated lubricant, for example as lubrication 10 .
- lubrication 10 for example, graphite is used as a lubricant.
- the clamping force exerted by the clamping units 11.1, 11.2 on the partial frames 2.1, 2.2 during the horizontal oscillation of the frame 2 is reduced, for example compared to a start of continuous casting of a metallic cast strand.
- the spring strip packages 17 are used to guide the frame 2 during its horizontal movements or oscillations.
- a spring strip package 17 is arranged on opposite sides in the width direction H.
- the spring strips run vertically and are each connected to a longitudinal frame 14, 15 at their ends.
- the spring bands each extend essentially over the entire vertical extension of the mold 1 in order to achieve the greatest possible length of the spring bands.
- each longitudinal frame 14, 15 broadside casters 16 are arranged on the underside, the roller axes of which run in the width direction H and which are set up for guiding a metallic cast strand emerging from the mold 1.
- forces exerted by the cast strand on the mold 1 only act on the longitudinal frames 14, 15 and not on the frame 2.
- each sub-frame 2.1, 2.2 is connected to two compensators 18, through which cooling water from a longitudinal frame 14, 15 can be supplied to the sub-frame 2.1, 2.2 and cooling water from the Sub-frame 2.1, 2.2 in the longitudinal frame 14, 15 can be derived.
- guide rails are arranged in the figures, the hanging and guide the narrow sides 7, 8 and are screwed to the longitudinal frames 14, 15 on the outside, but are spaced apart from the frame 2 so as not to impede the horizontal movements of the frame 2.
- the mold 1 has other components which are not relevant to the invention and are therefore not described and illustrated here.
- the mold 1 can have a further oscillation drive which is set up to move the mold in an oscillating manner in the vertical direction.
- FIG. 4 shows a mold 1 with clamping units 11.1, 11.2, each of which has a pivoting unit 20.
- the pivoting units 20 allow the partial frames 2.1, 2.2 to be moved in the horizontal width direction by the oscillation drive 13, at least at times in different directions.
- the clamping unit is designed as a hydraulic cylinder 12.
- the partial frames 2.1, 2.2 are each connected to a support plate 5 and the broadside copper plate 6 is attached to the support plate.
- the narrow sides 8, 9 are attached between the broadside copper plates 6, the clamping units 11.1, 11.2 are controlled or regulated by a control or regulating device 24 in such a way that a contact pressure between the broadside copper plate 6 and the narrow side 7, 8 is kept at a predetermined value.
- the control or regulating device 24 receives, among other things, pressures as an input variable, which are measured by the pressure gauges 22 and transmits corresponding signals to a hydraulic station 23. During the oscillating movement, the contact pressure should be between 0 and 1 N/mm 2 .
- FIG. 5 shows a detailed view of a broadside insert 3, 4, which consists of the support plate 5 and the broadside copper plate 6, and the narrow side 8, 9.
- the narrow side 8, 9 also has a Narrow side copper plate 9 on.
- Narrow side copper plate 9 has a radius 21 running.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT510372021 | 2021-12-22 | ||
| PCT/EP2022/087204 WO2023118279A1 (de) | 2021-12-22 | 2022-12-21 | Kokille einer stranggiessanlage |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4452536A1 true EP4452536A1 (de) | 2024-10-30 |
| EP4452536B1 EP4452536B1 (de) | 2025-10-01 |
| EP4452536C0 EP4452536C0 (de) | 2025-10-01 |
Family
ID=84981110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22843676.2A Active EP4452536B1 (de) | 2021-12-22 | 2022-12-21 | Kokille einer stranggiessanlage |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20250058374A1 (de) |
| EP (1) | EP4452536B1 (de) |
| CN (1) | CN118475422A (de) |
| WO (1) | WO2023118279A1 (de) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5279354A (en) * | 1990-11-30 | 1994-01-18 | Acutus Industries, Inc. | Method of continuous casting with changing of slab width |
| DE4341719C2 (de) * | 1993-12-03 | 2001-02-01 | Mannesmann Ag | Einrichtung zum Stranggießen von Stahl |
| IT1267209B1 (it) * | 1993-12-20 | 1997-01-28 | Voest Alpine Ind Anlagen | Conchiglia per colata continua. |
| US6041848A (en) * | 1998-01-13 | 2000-03-28 | Sms Concast Division Of Sms-Schloemann Siemag Inc. | Adjustable continuous casting mold |
| AT506822B1 (de) * | 2008-05-26 | 2012-06-15 | Siemens Vai Metals Tech Gmbh | Stranggiesskokille für eine stranggiessanlage |
| AT514495B1 (de) * | 2013-06-27 | 2016-05-15 | Primetals Technologies Austria GmbH | Zweidimensionale Oszillation einer Stranggießkokille |
-
2022
- 2022-12-21 US US18/723,280 patent/US20250058374A1/en active Pending
- 2022-12-21 EP EP22843676.2A patent/EP4452536B1/de active Active
- 2022-12-21 CN CN202280085282.2A patent/CN118475422A/zh active Pending
- 2022-12-21 WO PCT/EP2022/087204 patent/WO2023118279A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP4452536B1 (de) | 2025-10-01 |
| US20250058374A1 (en) | 2025-02-20 |
| CN118475422A (zh) | 2024-08-09 |
| WO2023118279A1 (de) | 2023-06-29 |
| EP4452536C0 (de) | 2025-10-01 |
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