EP3233329A1 - Distributor for continuous casting plants - Google Patents
Distributor for continuous casting plantsInfo
- Publication number
- EP3233329A1 EP3233329A1 EP15807924.4A EP15807924A EP3233329A1 EP 3233329 A1 EP3233329 A1 EP 3233329A1 EP 15807924 A EP15807924 A EP 15807924A EP 3233329 A1 EP3233329 A1 EP 3233329A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- distributor
- threshold
- channel
- region
- 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.)
- Withdrawn
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
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/116—Refining the metal
- B22D11/118—Refining the metal by circulating the metal under, over or around weirs
-
- 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
- B22D11/103—Distributing the molten metal, e.g. using runners, floats, distributors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/08—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like for bottom pouring
Definitions
- the invention relates to a distributor for continuous casting plants according to the preamble of claim 1.
- the steel continuous casting is a well known method for continu ous ⁇ casting of steel slabs.
- steel is usually produced in a converter, transferred from the steel converter in a pan and forwarded by the pan via a distributor to the casting mold.
- the distributor has the task here, after emptying a pan and feeding the next pan, to ensure a continuous flow of steel.
- This continuous casting plant has a ladle holding and changing device (ladle turret), ladles and a distributor trough and a continuous casting mold and a Strangab ⁇ zugsvorraum.
- the in preparation for transport in the pouring position filled with melt ladle is associated with a distributing trough for common transport with the ⁇ ser.
- the distributor trough is inserted into the jib for the reception of the ladle vorgese ⁇ Henen boom on the ladle tower below the ladle.
- Tundish and / or ladle are provided with ⁇ With stuffs for releasable connection with each other.
- a tundish for continu ⁇ ous continuous casting wherein the distributor channel has a channeled induction heating device which is arranged on the side wall of the tundish, the device comprising a channel with an opening in the side walls Distributor channel communicates.
- EP 0 140 217 A1 discloses a method and a device for changing the ladle and intermediate container at a continuous casting plant.
- a tundish for receiving and filtering ferrous metal melts which has a discharge opening for withdrawing the molten metal after passing through a deflection and / or filter device in the bottom region, wherein in the tundish a substantially ge ⁇ velvet horizontal cross section of the tundish covering, in a known manner removable, ceramic filter is arranged, which extends substantially in the horizontal direction and is provided with passage openings, which are arranged in the substantially vertically extending flow direction of the molten metal through the tundish , which is to be achieved with a simple Konstrukti ⁇ on a cleaning or filtering of molten metals for high casting speeds.
- EP 0 804 306 B1 discloses an apparatus for controlling the flow of molten metal in a distributor trough to improve the separation of inclusions from the metal bath.
- a flow control dam is downstream ⁇ Windier positioned by a shock buffer, which has an upper portion which is adapted to receive a flow of molten steel, which disengages from the impact pad, and at least one secondary stream flowing in a downstream direction toward the slag cover , And in at least one Crow ⁇ stream, which flows in an upstream direction to the slag can divert.
- a shock buffer which has an upper portion which is adapted to receive a flow of molten steel, which disengages from the impact pad, and at least one secondary stream flowing in a downstream direction toward the slag cover , And in at least one Mau ⁇ stream, which flows in an upstream direction to the slag can divert.
- it is a built-in dam to prevent a short circuit flow.
- Vortex stones is to prevent swirls contained in molten steel vessels in the area of Bodenaus contacter arranged in such a way that their knife edges ⁇ extend into the vortex.
- the Vortex stones consist of a circular segment-like flat fixing part and the brake part with the knife edge, this one-piece component can be placed practically on the bottom outlet or better placed on ei ⁇ nen hole stone and connected to this because the inner diameter corresponds to that of the bottom outlet.
- the manifold geometry is formed such that in the inlet region of the distributor, ie in the region of the spout, in which the liquid steel ge ⁇ reached in the tundish, formed the geometry of the distributor plate as the side (sides ⁇ walls, front wall) and the bottom closed pot is.
- This pot has in particular the dimensions of 1 m wide, 1 m depth and 20 cm in height.
- This pot is open at the top and is also filled from above the shade tube from the pan with liquid steel. If this pot is filled, the wall or the installation or the ramp or the wall, which delimits the pot to the rest of the manifold, overflowed and filled the entire distributor.
- This pot or trough-like shaped bottom geometry in the region of the inlet which is also referred to below as a pot, primarily has the task of redirecting the pan and shadow tube induced liquid steel flow in the distribution inlet area in the direction of the bath mirror surface of the distributor.
- the invention is intended to reduce the amount of residual steel in the distributor, to increase the output and to maintain the particle separation behavior of the distributor to at least the existing extent.
- short-circuit currents are to be avoided in which the molten steel from the ladle on the ladle shroud directly, that flows manifold outlet by the shortest route, near the bottom of the distributor in Rich ⁇ processing and passes through the casting tube in the co ⁇ kille. Particles in this short-circuit flow can not be deposited in the distributor on the bath mirror surface of the distributor and get in this way with the molten steel directly into the mold, which must be avoided at all costs.
- openings which are provided in the direction of the distributor outlet, and in particular channels which are open at the top, are formed starting from the two lateral longitudinal boundaries (longitudinal walls) of the distributor in the direction of the longitudinal axis of the distributor and extend in particular to the bottom of the pot.
- these recesses are designed symmetrically to the longitudinal axis of the distributor.
- lateral channels or at least one mallli ⁇ cher channel are formed.
- an IMP EXP ⁇ including flow-through cross-sectional area which is between 10% and 30%, preferably between 15% and 25%, the cross-sectional area of the Pot lies.
- the area of the wall or the installation is preferably less than 50% of the total area, more preferably less than 40%.
- the channel or the channels can slightly from the respective side wall, ie, be from 0.01% to 25% of the width of the distri ⁇ lerinnenraums spaced.
- the invention is exemplified with reference to a drawing erläu ⁇ tert. It shows:
- Figure 1 highly schematic of a distributor according to the prior art in a view from above;
- FIG. 2 shows the distributor according to FIG. 1 in a cross-sectional view
- FIG. 3 a distributor according to the invention in a highly schematic view from above;
- Figure 4 the distributor of Figure 3 in a side sectional view ..;
- FIG. 5 shows the results of numerical CFD calculations (RTD curves).
- FIG. 6 shows the distributor according to the invention in a highly schematic isometric, partially transparent view
- FIG. 7 shows the cross section through a channel according to the invention in the bottom of the distributor
- Figure 8 the flow profile at the inlet of steel in the
- FIG. 9 shows the flow profile when introducing steel into the distributor according to the invention.
- An inventive distributor 1 is an elongated, trogen-like container with two opposite Stirnwan ⁇ tions 2, 3 and two connecting the end walls side walls 4, 5 (Fig. 1 and Fig. 2).
- the distributor 1 has a bottom 6, wherein an inlet region 7 and an outlet region 8 are provided along a longitudinal axis 9 of the distributor 1.
- the lead-in area 7 is adjacent to a einlaufseifigen end wall 2 is arranged, while the lead-out area 8 formed adjacent to an off-running side end wall 3, so that basic ⁇ additionally incoming steel, the longitudinal extension of the manifold 1 the following flow through the vessel.
- the bottom 6 of the manifold 1 can deepen from a Einlaufbe ⁇ rich 7 to an outlet portion 8 obliquely, said obliquely means here that the depth becomes deeper toward ⁇ over a mirror 10th
- a threshold 12 or ramp 12 is provided such that it forms a recessed pot 13 in the inlet region 7 of the distributor 1 to the interior 11 of the distri ⁇ lers 1 out.
- This pot 13 is particularly deepened rectangular, trough-shaped.
- the threshold 12 or Ram ⁇ pe 12 forms a directed to the interior 11, closed boundary of the pot 13 in the direction of the distributor outlet 8 and in particular a slight inclination, similar to a jump, have.
- the distributor base 6 can thereby lower from an upper edge 12a of the threshold 12 with an elongated inclination 14 in the direction of the distributor outlet 8.
- the bottom 6 in the region of the inlet region 7 and the outlet region 8 with respect to a bathroom mirror 10 is flat.
- the maximum bath level 10 in the operation of the distributor 1 is meant. When emptying the distributor 1 the Badspie ⁇ gel drops from the maximum level of the bath 10 during operation.
- the edge of the pot 13 or the threshold 12 or ramp 12 is formed at least along ei ⁇ ner side wall 4, 5 in the direction of the distributor outlet 8 with a channel-like opening 15 which extends from the upper edge 12a of the tie 12 or ramp 12, preferably ranging up to a level of the bottom 6 in the region of the a ⁇ running region. 7
- the channels 15 with their channel bottom 16 have a slight inclination down to the distributor outlet region 8.
- the channels 15 are thus bounded on the one hand by its channel bottom 16, on the other hand by a side wall 4, 5 and a channel wall 17 of the threshold 12 or ramp 12.
- the channels 15 may also be slightly spaced from the side walls 4, 5, so that the threshold 12 is not broken edge-side but a small piece to the longitudinal axis 9 is broken.
- the channel 15 or the channels 15 have in a conventional distribution geometry, for example, a width of 70 mm to 80 mm, a height corresponding to the height of the threshold 12, where ⁇ it has been found to be advantageous if the channels 15 limiting walls 4, 5 and 17, respectively, from the channel floor diverging wegdivergierend, for example, at an angle of 10 ° to 20 ° (Fig. 6 and Fig. 7).
- the threshold 12 or ramp 12 can be arranged perpendicular to the longitudinal axis 9 of the distributor 1, it can also be rounded or curved.
- the threshold 12 has a height which is less than the maximum bath level 10 in the operation of the distributor 1, so as not to negatively influence the particle flow.
- the threshold 12 preferably has a height in the ratio of less than 1: 5, particularly preferably less than 1:10, in comparison to the bath level 10.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014119109.9A DE102014119109B4 (en) | 2014-12-18 | 2014-12-18 | Distributor for continuous casting plants |
PCT/EP2015/079238 WO2016096596A1 (en) | 2014-12-18 | 2015-12-10 | Distributor for continuous casting plants |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3233329A1 true EP3233329A1 (en) | 2017-10-25 |
Family
ID=54843849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15807924.4A Withdrawn EP3233329A1 (en) | 2014-12-18 | 2015-12-10 | Distributor for continuous casting plants |
Country Status (6)
Country | Link |
---|---|
US (1) | US10632527B2 (en) |
EP (1) | EP3233329A1 (en) |
JP (1) | JP6465979B2 (en) |
KR (1) | KR102001547B1 (en) |
DE (1) | DE102014119109B4 (en) |
WO (1) | WO2016096596A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11411972B2 (en) | 2018-11-13 | 2022-08-09 | Mcafee, Llc | Methods, systems, and media for dynamically separating internet of things devices in a network |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB216428A (en) * | 1923-10-02 | 1924-05-29 | Alois Heibl | Improvements in rotary motors |
CH545153A (en) * | 1971-04-21 | 1974-01-31 | Buehrer Erwin | Passage for pouring a mold |
JPS59143559U (en) | 1983-03-18 | 1984-09-26 | 川崎製鉄株式会社 | Continuous casting tandate with molten steel heating device |
DE3337739C2 (en) | 1983-10-18 | 1985-10-10 | Thyssen Edelstahlwerke AG, 4000 Düsseldorf | Method and device for changing the ladle and intermediate container on a continuous caster |
GB2164281A (en) * | 1984-09-18 | 1986-03-19 | Dresser Ind | Tundish with gas injection tile |
DE3666161D1 (en) * | 1986-03-07 | 1989-11-16 | Nippon Steel Corp | An anode system for plasma heating usable in a tundish |
US4770395A (en) * | 1987-06-16 | 1988-09-13 | Sidbec Dosco Inc. | Tundish |
US4776570A (en) * | 1987-07-08 | 1988-10-11 | Sidbec Dosco Inc. | Ladle stream breaker |
DE4006842A1 (en) | 1990-03-05 | 1991-09-12 | Schloemann Siemag Ag | Strip casting assembly - has die head with flow guides to prevent turbulence in molten metal passing to the mouthpiece |
JPH07144261A (en) * | 1993-11-22 | 1995-06-06 | Sumitomo Metal Ind Ltd | Removing method for inclusion in molten metal by tundish |
US5551672A (en) | 1995-01-13 | 1996-09-03 | Bethlehem Steel Corporation | Apparatus for controlling molten metal flow in a tundish to enhance inclusion float out from a molten metal bath |
KR960031024A (en) | 1995-02-13 | 1996-09-17 | 노보트니, 가이어 | Tundish |
JP3563222B2 (en) * | 1997-01-31 | 2004-09-08 | 日本冶金工業株式会社 | Tundish for continuous casting of steel |
AT405914B (en) * | 1997-11-07 | 1999-12-27 | Voest Alpine Ind Anlagen | DEVICE FOR CONTINUOUS CASTING OF A METAL STRIP |
JP2000117401A (en) | 1998-10-13 | 2000-04-25 | Sumitomo Metal Ind Ltd | Tundish and continuous casting method |
US6074600A (en) | 1999-05-26 | 2000-06-13 | Armco Inc. | Modification of tundish dam to minimize turbulence |
AT411024B (en) * | 2001-12-14 | 2003-09-25 | Voest Alpine Ind Anlagen | INTERMEDIATE VESSEL AND METHOD FOR PRODUCING A METAL STRAND OF HIGH PURITY |
JP2003245757A (en) * | 2002-02-26 | 2003-09-02 | Jfe Steel Kk | Tundish |
GB0216428D0 (en) | 2002-07-16 | 2002-08-21 | Barrett Christian | Basic needs audio interface |
JP2008254028A (en) * | 2007-04-05 | 2008-10-23 | Nippon Steel Corp | Tundish for continuous casting |
DE102009009740A1 (en) | 2009-02-19 | 2010-08-26 | Stilkerieg, Berthold, Dipl.-Ing. | Device for vortex avoidance in metallurgical vessels |
JP2012152796A (en) * | 2011-01-27 | 2012-08-16 | Nisshin Steel Co Ltd | Tundish weir for casting single strand in continuous casting |
-
2014
- 2014-12-18 DE DE102014119109.9A patent/DE102014119109B4/en active Active
-
2015
- 2015-12-10 EP EP15807924.4A patent/EP3233329A1/en not_active Withdrawn
- 2015-12-10 KR KR1020177020051A patent/KR102001547B1/en active IP Right Grant
- 2015-12-10 WO PCT/EP2015/079238 patent/WO2016096596A1/en active Application Filing
- 2015-12-10 JP JP2017533313A patent/JP6465979B2/en active Active
- 2015-12-10 US US15/537,514 patent/US10632527B2/en active Active
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2016096596A1 * |
Also Published As
Publication number | Publication date |
---|---|
KR102001547B1 (en) | 2019-07-18 |
WO2016096596A1 (en) | 2016-06-23 |
US10632527B2 (en) | 2020-04-28 |
US20180001376A1 (en) | 2018-01-04 |
KR20170116015A (en) | 2017-10-18 |
JP2018500176A (en) | 2018-01-11 |
DE102014119109B4 (en) | 2018-12-13 |
DE102014119109A1 (en) | 2016-06-23 |
JP6465979B2 (en) | 2019-02-06 |
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