EP3612329A1 - Method and device for producing foundry ingots from metal - Google Patents
Method and device for producing foundry ingots from metalInfo
- Publication number
- EP3612329A1 EP3612329A1 EP18722911.7A EP18722911A EP3612329A1 EP 3612329 A1 EP3612329 A1 EP 3612329A1 EP 18722911 A EP18722911 A EP 18722911A EP 3612329 A1 EP3612329 A1 EP 3612329A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- longitudinal axis
- ingot
- mold
- block
- cast
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 20
- 238000005266 casting Methods 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 229910001338 liquidmetal Inorganic materials 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 238000005204 segregation Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000011982 device technology Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 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
- B22D11/1281—Vertical removing
-
- 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
- B22D11/0401—Moulds provided with a feed head
-
- 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
- B22D11/0405—Rotating 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
- B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds 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
- B22D11/08—Accessories for starting the casting procedure
- B22D11/081—Starter bars
-
- 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
- B22D11/08—Accessories for starting the casting procedure
- B22D11/081—Starter bars
- B22D11/083—Starter bar head; Means for connecting or detaching starter bars and ingots
-
- 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
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/114—Treating the molten metal by using agitating or vibrating means
-
- 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
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/114—Treating the molten metal by using agitating or vibrating means
- B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
-
- 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
- B22D11/122—Accessories for subsequent treating or working cast stock in situ using magnetic fields
-
- 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
Definitions
- the invention relates to a method for producing cast blocks from metal, in particular from steel, with a cross-sectional area of more than 0.1 m 2 , according to the preamble of claim 1. Furthermore, the invention relates to an apparatus for carrying out the method according to the invention.
- the object of the invention is to develop a method for producing cast blocks made of metal, in particular of steel, with a cross-sectional area of more than 0.1 m 2 , according to the preamble of claim 1, that the cast blocks produced have a particularly high quality.
- the principle according to the invention consists in an at least temporary rotation of the ingot about its longitudinal axis, as long as the metal of the ingot is not completely solidified, the rotation already taking place during the actual casting process, ie within the region of the mold.
- the timing of the start and end of turning the ingot, the type of rotation and the direction of rotation depends on various factors and may need to be adapted to the particular application.
- a first variant of the method which is particularly easy to implement in terms of device technology, provides that the cast block is continuously rotated in a (single) direction about the longitudinal axis.
- the casting block is rotated in an oscillating manner about the longitudinal axis, for example by a rotation angle of ⁇ 45 ° relative to a middle position.
- a rotation angle of ⁇ 45 ° relative to a middle position is provided.
- An additional possibility for influencing the quality or the solidification properties of the cast block provides that during the movement of the cast block, the rotational angular velocity of the cast ingot is varied about the longitudinal axis. For example, a uniform increase or reduction of the rotational angular velocity may be provided, or a sudden stopping and subsequent turning with high acceleration.
- liquid metal continuously passes into the region of the mold, at the same time the at least partially solidified block being withdrawn by means of the withdrawal punch, so that liquid metal can be replenished into the mold.
- a withdrawal movement of the ingot takes place continuously or at a constant take-off speed, at least until the time at the end of the casting, in which the take-off speed is reduced, for example.
- a further variation of the inventive method described so far provides that the mold (in addition to the ingot) is rotated about the longitudinal axis.
- Such a rotation of the mold about the longitudinal axis can be done either by an additional, separate drive, or by the fact that the mold is arranged to be movable about its longitudinal axis, and a rotation of the mold is caused by the friction with the metal of the ingot.
- the rotation of the ingot about its longitudinal axis should take place until it is ensured that the cross section of the ingot is completely solidified over its entire length.
- an additional optimization of the quality of the ingot is achievable if the molten metal of the ingot is moved by means of an electromagnetic stirring coil.
- a stirring coil can either be arranged stationary in the region of the cast block, or longitudinally displaceable in the direction of the longitudinal axis of the cast block around the cast block. It is also possible to provide a combination of a rigid and a movable electromagnetic stirring coil.
- the invention comprises an apparatus for carrying out the inventive method described so far, wherein the
- Device has a ladle and optionally an intermediate vessel for supplying liquid molten metal in a downwardly open mold.
- a height-adjustable arranged withdrawal stamp for at least indirectly arranging the ingot is provided on a mold surface facing the mold.
- Device is characterized by means for rotating the ingot about its longitudinal axis.
- the means are formed by the withdrawal stamp itself or a stand element on which the ingot stands by the trigger stamp or the stand element is rotatable about its longitudinal axis by means of a drive.
- the means are formed by drive means acting on the outer circumference of the cast block, in particular in the form of rotatable rollers or rollers.
- Such rollers or rollers are at least non-positively on the outer circumference of the cast block and cause the desired rotation of the ingot, in which case the trigger may need to be rotatable about the longitudinal axis, but does not require its own drive.
- the mold is arranged rotatably about the longitudinal axis and / or that at least one electromagnetic stirring coil is provided for the cast block.
- the device 10 shown in the figure is used for the discontinuous production of a cast block 1 of metal 2, in particular of steel, with a cross-sectional area of preferably more than 0.1 m 2 and a length of, for example, up to 15m.
- the cross-sectional area of the cast block 1 is preferably circular, but may be rectangular or square, or may have another desired shape.
- the device 10 comprises a ladle 1 1, from the liquid metal 2 via a possibly present distribution vessel 12 in a downwardly open Mold 15 can be delivered. Above the mold 15 may optionally be provided on the side facing the distributor vessel 12 a lining 16 which is surrounded radially by a heating device in the form of an induction coil 17.
- the unit of lining 16 and heating means or induction coil 17 is also referred to as "feeder".
- the feeder is used in particular at the end of the casting to heat the liquid metal.
- a different shape and arrangement of a heating device can be provided, for example in the form of above the lining 16 arranged heating rods, electrodes or the like.
- the mold 15 adjoins the feeder, which optionally can be radially surrounded by an electromagnetic stirrer 19.
- the pouring level 3 of the molten metal is located, for example, in the region of the mold 15, wherein the pouring level 3 can be covered by unillustrated powder for lubrication and / or for (thermal) insulation.
- the inner cross section of the mold 15 is adapted to the cross section of the cast block 1 to be formed or corresponds to it.
- a cooling device 21 which is arranged in operative connection with the cast block 1, optionally adjoins below the mold 15.
- a further electromagnetic stirrer 22 may be provided, which may be arranged to be movable longitudinally in the direction of the double arrow 23 in the direction of a longitudinal axis 5 of the cast block 1.
- the mold 15 is rotatably mounted about the longitudinal axis 5 of the ingot 1 and the mold 15 by means not shown bearing means.
- a possibly cooled stand element 25 which forms a base 26 for the cast block 1 on the side facing the cast block 1.
- the stand element 25 is connected to a trigger stamp 28, which is connected via a cross member 29 with a longitudinal column 30.
- the cross member 29 and the withdrawal punch 28 can be raised and lowered by means of a drive, not shown, in the direction of the longitudinal axis 5.
- the stand element 25 is also rotatably mounted about the longitudinal axis 5 and by means of a drive 32 can generate an active rotation of the ingot 1 about the longitudinal axis 5 during the casting process of the ingot 1.
- the drive 32 is preferably designed such that it, depending on the application, the casting block 1 or the stand member 25 but also oscillating, for example by 45 ° to a central position of the ingot 1, as well as with different rotational angular velocities according to a proposed velocity profile, can move.
- rollers 35 acting as an alternative to the outer circumference 6 of the cast block 1 above the stand element 25 can be used, which are each rotatably mounted in an axis 36 and driven by a drive 37.
- rollers 35 preferably at uniform angular intervals about the longitudinal axis 5, is provided.
- the cast block 1 is pulled down from the mold 15 by means of the withdrawal punch 28 in the direction of the longitudinal axis 5.
- the take-off speed of the ingot 1 may be uniform or discontinuous. Furthermore, during the withdrawal of the ingot 1 from the mold 15, by h.h. during the casting process, possibly also after the end of the withdrawal process, at least a temporary rotation of the ingot 1 about the longitudinal axis. 5
- the liquid metal 2 solidifies within the ingot 1 from the outer periphery 6 of the ingot 1 in the direction of the longitudinal axis 5. After the regular pouring end, it may be provided that further liquid metal according to the disclosure of WO 2015/101553 A2 in the mold 15 to compensate the shrinkage of the molten metal is poured.
- the device 10 described so far or the described method can be modified or modified in various ways, without deviating from the inventive idea.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017108394.4A DE102017108394A1 (en) | 2017-04-20 | 2017-04-20 | Method and device for producing cast blocks from metal |
PCT/EP2018/059728 WO2018192903A1 (en) | 2017-04-20 | 2018-04-17 | Method and device for producing foundry ingots from metal |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3612329A1 true EP3612329A1 (en) | 2020-02-26 |
EP3612329B1 EP3612329B1 (en) | 2021-02-24 |
Family
ID=62116822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18722911.7A Active EP3612329B1 (en) | 2017-04-20 | 2018-04-17 | Method and apparatus for producing metal slab |
Country Status (5)
Country | Link |
---|---|
US (1) | US11020795B2 (en) |
EP (1) | EP3612329B1 (en) |
CN (1) | CN110545935B (en) |
DE (1) | DE102017108394A1 (en) |
WO (1) | WO2018192903A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112974740B (en) * | 2021-04-19 | 2021-07-30 | 北京科技大学 | Vacuum induction melting casting process and ingot mold device for GH4151 alloy |
AT525111A1 (en) | 2021-06-08 | 2022-12-15 | Primetals Technologies Austria GmbH | Stirring cast blooms with an oscillating strand stirrer |
CN114905016B (en) * | 2022-06-13 | 2024-01-12 | 武汉大西洋连铸设备工程有限责任公司 | Mechanical rotary stirring device applied to casting blank solidification process |
CN115041648A (en) * | 2022-07-04 | 2022-09-13 | 山东科睿聚创机械有限公司 | Iron core sectional type electromagnetic stirring device |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1752934U (en) * | 1956-06-28 | 1957-09-26 | Degussa | DEVICE FOR REMOVING CASTING BARS IN THE CONTINUOUS CASTING PROCESS. |
NL133438C (en) * | 1965-03-03 | |||
FR2150237B1 (en) * | 1971-08-25 | 1974-05-10 | Etudes De Centrifugation | |
FR2369039A1 (en) * | 1976-10-29 | 1978-05-26 | Creusot Loire | Continuous casting of vertical strands - in which induction motors oppose the descent of the strand |
US4612972A (en) * | 1982-01-04 | 1986-09-23 | Olin Corporation | Method and apparatus for electro-magnetic casting of complex shapes |
SE464619B (en) | 1985-09-13 | 1991-05-27 | Olsson Ag Erik | SETTING AND PLANTING FOR STRENGTHENING WITH HORIZONTAL OR SLEEPING COCKLE |
JPS63157739A (en) * | 1986-12-19 | 1988-06-30 | Kawasaki Steel Corp | Apparatus for producing hollow metal ingot having high melting point |
CN2043531U (en) | 1988-06-30 | 1989-08-30 | 上海钢铁研究所 | Ingot puller for self-consumption vacuum furnace with double-electrode |
US4989666A (en) * | 1988-12-22 | 1991-02-05 | Swiss Aluminium Ltd. | Process and device for electromagnetically casting metals |
JPH09276993A (en) | 1996-04-15 | 1997-10-28 | Sanyo Special Steel Co Ltd | Light rolling reduction method at end stage of solidification in rotary continuous casting |
JP5027682B2 (en) * | 2008-01-28 | 2012-09-19 | 東邦チタニウム株式会社 | Method for producing refractory metal ingot |
KR101053975B1 (en) * | 2009-01-21 | 2011-08-04 | 주식회사 포스코 | Vertical semicontinuous casting device and casting method using the same |
AT515244A2 (en) | 2013-12-30 | 2015-07-15 | Inteco Special Melting Technologies Gmbh | Method for producing long ingots of large cross section |
RU2675880C2 (en) * | 2014-03-27 | 2018-12-25 | Прайметалз Текнолоджиз Аустриа ГмбХ | Semi-continuous casting of a steel strip |
-
2017
- 2017-04-20 DE DE102017108394.4A patent/DE102017108394A1/en not_active Withdrawn
-
2018
- 2018-04-17 EP EP18722911.7A patent/EP3612329B1/en active Active
- 2018-04-17 WO PCT/EP2018/059728 patent/WO2018192903A1/en active Search and Examination
- 2018-04-17 US US16/605,035 patent/US11020795B2/en active Active
- 2018-04-17 CN CN201880025607.1A patent/CN110545935B/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2018192903A1 (en) | 2018-10-25 |
CN110545935B (en) | 2022-02-11 |
EP3612329B1 (en) | 2021-02-24 |
US20210023611A1 (en) | 2021-01-28 |
CN110545935A (en) | 2019-12-06 |
US11020795B2 (en) | 2021-06-01 |
DE102017108394A1 (en) | 2018-10-25 |
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