WO2010015399A1 - Strand casting mold for liquid metal, particularly for liquid steel - Google Patents

Strand casting mold for liquid metal, particularly for liquid steel Download PDF

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Publication number
WO2010015399A1
WO2010015399A1 PCT/EP2009/005690 EP2009005690W WO2010015399A1 WO 2010015399 A1 WO2010015399 A1 WO 2010015399A1 EP 2009005690 W EP2009005690 W EP 2009005690W WO 2010015399 A1 WO2010015399 A1 WO 2010015399A1
Authority
WO
WIPO (PCT)
Prior art keywords
casting mold
cooling channels
continuous casting
plates
characterized
Prior art date
Application number
PCT/EP2009/005690
Other languages
German (de)
French (fr)
Inventor
Jörn HOFFMEISTER
Michael Dreis
Dirk Letzel
Original Assignee
Sms Siemag Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DE102008036541 priority Critical
Priority to DE102008036541.6 priority
Application filed by Sms Siemag Ag filed Critical Sms Siemag Ag
Publication of WO2010015399A1 publication Critical patent/WO2010015399A1/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/055Cooling the moulds

Abstract

The invention relates to a strand casting mold for the continuous casting of a metal strand, particularly a steel strand, having broadside walls (8, 9) positioned opposite of each other, and narrow side walls, wherein at least the broadside walls (8, 9) are equipped with cooling channels (13), characterized in that the cooling channels (13) comprise cross-sections, the measurements of which are adjusted to the desired cooling effect.

Description

 Continuous casting mold for liquid metal, in particular for liquid steel

The invention relates to a continuous casting mold for continuously casting a metal strand, in particular a steel strand, each having opposite broad side walls and narrow side walls, wherein at least the broad side walls are equipped with cooling channels.

Continuous casting molds are formed, for example, as slab molds, curved molds or Vorblockkokillen. Continuous casting molds for continuous casting of a metal strand, in particular a steel strand, are used as slab molds. The molds have clamping walls that are opposite one another and are clampable between the wide side walls and narrow side walls that are displaceable along the width side transversely to the casting direction, tapered narrower in the casting direction or parallel to one another; the broad side walls have a funnel-shaped or parallel-walled pouring area. which extends in the casting direction to Kokillenende. However, the broad sides of the mold can be arranged parallel to each other. In this case, the narrow side walls are interchangeably arranged according to the thickness of the metal strand to be cast.

From WO 03 106073 A2 a continuous casting mold for liquid metals, in particular for liquid steel, surrounded by water boxes, the casting cross-section parallel course forming, opposing insert plates made of steel and the steel insert plates adjacent cartridge-like copper plates are known, which limit the casting cavity , At the end faces of the casting cavity end plates for fixing the Gießstrangstärke and / or the Gießstrangbreite are inserted, which complete the casting cavity at the end faces. In the copper plates, coolant passages connecting the inlet to an outlet are provided at the interfaces with the steel insert plates. In this continuous casting mold, the thickness of the copper plates is in each case between the cooling medium and the copper plate hot side across the width and / or the height.

BSSTÄTIGUNGSKOPlt: different. As a result, the hot-side temperature can be made uniform over the width of the mold and the significant temperature drop over the mold height below the Gießspiegelbereichs can be reduced.

In curved molds according to the prior art arise due to production straight running cooling grooves or straight holes, which have different thicknesses of plate thickness on the inside and the outside of the mold on the plate height from top to bottom. As a result, the cooling effect is different in particular in the lower part of the mold between the inside and the outside.

Figure 1 shows such a curved mold in longitudinal section, based on the casting direction. Between two copper plates 1, 2 there extends a casting cavity 3 from which liquid metal is poured out in the direction of an arrow y. The copper plates 1, 2 are both slightly bent. The copper plate 1 is mounted on the outside of the mold and fixed. On its inner side facing the casting cavity 3, it is bent with a radius R 3 , while the copper plate 2 mounted on the outside of the mold for thickness adjustment of the slab to be cast is bent on its inside with a radius Rj. Both copper plates 1, 2 are equipped with cooling channels 4 and 5, through which a cooling liquid passes. The cooling channels 4, 5 each have a straight course. Their distance from an inner surface 6 or 7 of the copper plate thus changes with height. The distances s a and Si, which have the bottoms of the cooling channels with respect to the hot sides of the copper plates 1, 2, are different depending on the height. The following applies: si ≠ sa.

It is the object of the invention to improve a continuous casting mold so that the cooling effect in the side walls of the mold is made uniform.

According to the invention this object is achieved in a continuous casting mold of the type mentioned above in that the cooling channels adapted to the desired cooling effect cross sections and / or adapted to the desired cooling effect of the side walls distance to the hot side of the side walls, ie to the side of the side walls.

According to the invention, an optimized design of the wall thickness of the casting cavity bounding copper plates is sought, for example, in a Bo- genkokille inner and outer copper plates over the entire length from top to bottom with a uniform copper wall thickness and thus a more uniform cooling effect can be provided. As a result, a better product quality of the slabs or billets to be cast with this mold and an improvement in the safety of the casting process itself is achieved. Both the wide side walls and the narrow side walls can be equipped with cooling channels.

Advantageous developments of the invention will become apparent from the dependent claims.

Advantageously, it is provided that the cooling channels are designed as grooves in the outer wall of the casting cavity adjacent plates, in particular of copper plates. The adjacent to the casting cavity copper plates are provided on their outside with recesses, grooves, channels or the like., To allow the passage of a cooling liquid therethrough. On the outside are the copper plates of other plates, d. H. covered by cover plates, through which the recesses, grooves, channels, etc. are covered, so that they form closed lines, which have only at the top and bottom of an inlet or an outlet, so that a cooling liquid can flow through them sen.

In an advantageous embodiment of the invention, it is provided that the webs of the cooling channels are partially cleared and in that inserts are inserted in the resulting free space. In regions, ie preferably at certain lateral distances from one another, parallel recesses on the outside of the copper plate are brought in by material removal. Subsequently, where too much material has been removed, Inserted inserts so that the remaining in the copper plate wells have the desired contour and shape that corresponds to the desired heat transfer. The inserts can also be mounted on a cover plate or a plurality of cover plates, which cover the copper plate on its outer side or cover, wherein the inserts are mounted on the cover plate or the cover plates such that the inserts into the channels or recesses of the Protruding copper plate, so that the cross-section of these channels and wells is reduced accordingly.

In an alternative embodiment of the continuous casting mold it is provided that the cooling channels are formed as bores in the adjacent to the casting cavity copper plates.

Preferably, the inserts have dimensions that can vary according to the desired wall thickness and width of the channels above the height of the plates.

In a preferred embodiment, the cooling channels have the same distance to the casting cavity over their entire length; Alternatively, however, it may also be provided, for reasons of changing the heat transfer over the length of the plates, that the distance between the channels and the casting cavity changes in order to set a targeted cooling effect above the height of the mold plates. Also by a variation of the inner surface of the inserts, the channel cross section can be influenced.

In order to be able to set the desired heat transfer location-dependent, the cooling channels have widths and / or depths adapted to the cooling effect above the height of the plates.

The invention will be explained in more detail in an embodiment. Show it: 2a is a perspective view of a continuous casting mold with two each equipped with channels copper plates, partially cut away, omitting the outer walls,

2b shows a sectional view of the continuous casting mold corresponding to a section line A-A from FIG. 2a in the region of the channels,

3a is a sectional view of the continuous casting mold according to a section line B - B of Fig. 2a, d. H. in the area of narrow bridges between the canals,

Fig. 3b is a plan view of one of the copper plates of the continuous casting mold according to Fig. 2a, partially with inserts, and

Fig. 4 is a sectional view of the copper plate and the inserts corresponding to a section line C - C of Fig. 2b.

A continuous casting mold (FIGS. 2 a - 4) for continuous casting of a steel strand in the direction of an arrow y comprises a support frame (not shown here) for a solid broad side part with a copper plate 8 mounted on the outside of the mold and a (also not shown) Support frame for the movable broad side part (lot side) with a mounted on the inside of the mold copper plate 9. The copper plates 8, 9 form the broad side walls and are respectively on their hot sides 10 and 11, with which they adjoin a casting cavity 12 for receiving the molten metal , bent with a radius R a or a radius Rj.

The copper plates 8, 9 have on their side facing away from the casting cavity 12 sides in each case a plurality in the vertical direction extending channels 13, which are each separated by narrow webs 14 from each other. In the distance one

A plurality of channels 13 and an associated number of narrow webs 14 are wide webs 15 are provided, introduced into the holes 16. The holes 16 are used for attachment of (not shown) outer plates or scaffolding parts, which give the copper plates 8, 9 the required stability and with the

Support frames are connected. On a plurality of the channels 13 are respectively inserts 17, 18 placed on the narrow webs 14, so that the channels 13 are separated from each other transversely to the casting direction. After the inserts 17, 18 are placed on the channels 13, the outer or cover plate can be bolted to the copper plate 8, 9 via the bores 16.

In the illustrated embodiment, the channels 13 on their, the hot sides 10, 11 facing channel bottoms the same curvature R a and Rj as the copper plates 8, 9 on the hot sides 10, 11. However, depending on the situation of the mold and according to the desired cooling the molten metal in the casting mold also a special shape of the channels 13 are given over the course of their length, so that the wall thickness of the copper plates changes depending on the height. This is expressed by the function s (y). Thus, for the radii of curvature of the channel bottoms in general form: R a + s (y) for the channels 13 in the outside copper plate 8 and Ri - s (y) for the channels 13 in the inside copper plate 9.

The contours of the inserts 17, 18 facing the channels 13 also run in the same way as those of the channel bottoms, so that the channels 13 have the same cross-section in all height positions of the copper plates 8, 9. This means that inner surfaces 19 of the channels 13 everywhere have the same distance to inner surfaces 20 of the inserts 17, 18.

The inserts 17, 18 consist either of a temperature-resistant plastic or of a metal, in particular of brass or stainless steel. The width of the inserts 17, 18 is determined by a clearance 21 (FIG. 3 b) between the webs 15. LIST OF REFERENCE NUMBERS

1 copper plate

2 copper plate

3 casting cavity

4 cooling channels

5 cooling channels

6 inner surface

10 7 inner surface

8 copper plate

9 copper plate

10 hot side

11 hot side

15 12 casting cavity

13 channels

14 narrow bars

15 wide bars

16 holes

20 17 insert

18 insert

19 inner surface

20 inner surface

21 free space

25

Claims

claims
1. Continuous casting mold for continuously casting a metal strand, in particular a steel strand, each having opposite broad side walls (8, 9) and narrow side walls, wherein at least the broad side walls (8, 9) with cooling channels (13) are provided, characterized in that the cooling channels ( 13) adapted to the desired cooling effect cross sections and / or to the desired cooling effect of the side walls (8, 9) adapted distance to the hot side of the side walls (8, 9).
2. continuous casting mold according to claim 1, characterized in that the cooling channels (13) as grooves in the outer wall of the casting cavity (12) adjacent plates, in particular of copper plates (8, 9), are configured.
3. continuous casting mold according to claim 2, characterized in that the webs (14) between the cooling channels (13) are partially cleared and that in the resulting free space (21) inserts (17, 18) are inserted.
4. continuous casting mold according to claim 1, characterized in that the cooling channels (13) as holes in the casting cavity (12) adjacent plates (7, 8) are formed.
5. continuous casting mold according to claim 3, characterized in that the inserts (17, 18) according to the desired wall thickness and width and / or depth of the cooling channels (13) above the height of the plates (7, 8) have changing dimensions.
6. Continuous casting mold according to one of claims 1 to 4, characterized in that the cooling channels (13) over their entire length have the same distance from the casting cavity (12).
7. continuous casting mold according to one of claims 1 to 6, characterized in that the cooling channels (13) over the height of the plates (7, 8) have adapted to the cooling effect widths and depths.
PCT/EP2009/005690 2008-08-06 2009-08-06 Strand casting mold for liquid metal, particularly for liquid steel WO2010015399A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE102008036541 2008-08-06
DE102008036541.6 2008-08-06

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200980130932.5A CN102112255B (en) 2008-08-06 2009-08-06 Continuous casting mold for liquid metal, particularly for liquid steel
EP09777692.6A EP2321075B1 (en) 2008-08-06 2009-08-06 Strand casting mold for liquid metal, particularly for liquid steel

Publications (1)

Publication Number Publication Date
WO2010015399A1 true WO2010015399A1 (en) 2010-02-11

Family

ID=41165545

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/005690 WO2010015399A1 (en) 2008-08-06 2009-08-06 Strand casting mold for liquid metal, particularly for liquid steel

Country Status (3)

Country Link
EP (1) EP2321075B1 (en)
CN (1) CN102112255B (en)
WO (1) WO2010015399A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8767708B2 (en) 2010-12-30 2014-07-01 Motorola Mobility Llc Methods for cell search in synchronous interference limited channels
EP3424616A1 (en) 2017-07-07 2019-01-09 SMS Group GmbH Side plate of a continuous casting mould

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150258603A1 (en) * 2012-06-27 2015-09-17 Jfe Steel Corporation Continuous casting mold and method for continuous casting of steel

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1082988A (en) * 1964-12-22 1967-09-13 British Iron Steel Research Moulds
DE3526736A1 (en) * 1985-07-26 1987-01-29 Kabel Metallwerke Ghh Continuous casting mold for the continuous casting of metal
WO1998020997A1 (en) * 1996-11-12 1998-05-22 Giovanni Arvedi Improved unit of equipments for the high-speed continuous casting of good quality thin steel slabs
JPH11207442A (en) * 1998-01-21 1999-08-03 Sumitomo Heavy Ind Ltd Mold in continuous casting equipment and casting method using it
WO2003035306A1 (en) * 2001-10-18 2003-05-01 Sms Demag Aktiengesellschaft Method and device for optimizing the cooling capacity of a continuous casting mold for liquid metals, particularly for liquid steel
WO2003092931A1 (en) * 2002-04-27 2003-11-13 Sms Demag Aktiengesellschaft Adjustment of heat transfer in continuous casting moulds in particular in the region of the meniscus
WO2003106073A2 (en) * 2002-06-13 2003-12-24 Sms Demag Aktiengesellschaft Continuous casting mould for liquid metals, especially for liquid steel
DE10304543B3 (en) * 2003-02-04 2004-05-27 Sms Demag Ag Continuous casting of liquid metals, especially liquid steel, comprises partially reducing the heat transfer number during cooling in the region of the heat flow shadow of the submerged nozzle
JP2005028406A (en) * 2003-07-14 2005-02-03 Mishima Kosan Co Ltd Mold for continuous casting
DE10358853A1 (en) * 2003-12-16 2005-07-14 Km Europa Metal Ag Continuous casting mold for continuous casting processes comprises filler pieces made from a flexible plastic material having high temperature resistance which are arranged in cooling channels
EP1757385A2 (en) * 2005-08-27 2007-02-28 SMS Demag AG Broad side wall of a funnel-shaped mould
WO2007068687A2 (en) * 2005-12-13 2007-06-21 Danieli & C. Officine Meccaniche S.P.A. Crystallizer
DE102006036708A1 (en) * 2006-08-05 2008-02-07 Sms Demag Ag Continuous casting mold for liquid metals, in particular for liquid steel materials

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Publication number Priority date Publication date Assignee Title
DE19639295C2 (en) * 1996-09-25 1999-09-09 Schloemann Siemag Ag continuous casting
CN2681837Y (en) * 2004-01-12 2005-03-02 宝山钢铁股份有限公司 Broadside copper board of continuous casting crystallizer for thin slab blank
CN100486732C (en) * 2007-11-08 2009-05-13 攀钢集团攀枝花钢铁研究院;攀枝花新钢钒股份有限公司 Continuous casting crystallizer for plate billet

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1082988A (en) * 1964-12-22 1967-09-13 British Iron Steel Research Moulds
DE3526736A1 (en) * 1985-07-26 1987-01-29 Kabel Metallwerke Ghh Continuous casting mold for the continuous casting of metal
WO1998020997A1 (en) * 1996-11-12 1998-05-22 Giovanni Arvedi Improved unit of equipments for the high-speed continuous casting of good quality thin steel slabs
JPH11207442A (en) * 1998-01-21 1999-08-03 Sumitomo Heavy Ind Ltd Mold in continuous casting equipment and casting method using it
WO2003035306A1 (en) * 2001-10-18 2003-05-01 Sms Demag Aktiengesellschaft Method and device for optimizing the cooling capacity of a continuous casting mold for liquid metals, particularly for liquid steel
WO2003092931A1 (en) * 2002-04-27 2003-11-13 Sms Demag Aktiengesellschaft Adjustment of heat transfer in continuous casting moulds in particular in the region of the meniscus
WO2003106073A2 (en) * 2002-06-13 2003-12-24 Sms Demag Aktiengesellschaft Continuous casting mould for liquid metals, especially for liquid steel
DE10304543B3 (en) * 2003-02-04 2004-05-27 Sms Demag Ag Continuous casting of liquid metals, especially liquid steel, comprises partially reducing the heat transfer number during cooling in the region of the heat flow shadow of the submerged nozzle
JP2005028406A (en) * 2003-07-14 2005-02-03 Mishima Kosan Co Ltd Mold for continuous casting
DE10358853A1 (en) * 2003-12-16 2005-07-14 Km Europa Metal Ag Continuous casting mold for continuous casting processes comprises filler pieces made from a flexible plastic material having high temperature resistance which are arranged in cooling channels
EP1757385A2 (en) * 2005-08-27 2007-02-28 SMS Demag AG Broad side wall of a funnel-shaped mould
WO2007068687A2 (en) * 2005-12-13 2007-06-21 Danieli & C. Officine Meccaniche S.P.A. Crystallizer
DE102006036708A1 (en) * 2006-08-05 2008-02-07 Sms Demag Ag Continuous casting mold for liquid metals, in particular for liquid steel materials

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8767708B2 (en) 2010-12-30 2014-07-01 Motorola Mobility Llc Methods for cell search in synchronous interference limited channels
EP3424616A1 (en) 2017-07-07 2019-01-09 SMS Group GmbH Side plate of a continuous casting mould
DE102017211654A1 (en) 2017-07-07 2019-01-10 Sms Group Gmbh Side plate of a continuous casting mold

Also Published As

Publication number Publication date
CN102112255A (en) 2011-06-29
EP2321075A1 (en) 2011-05-18
CN102112255B (en) 2014-05-07
EP2321075B1 (en) 2018-07-11

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