EP2897746B1 - Dispositif de coulée continue de métaux - Google Patents
Dispositif de coulée continue de métaux Download PDFInfo
- Publication number
- EP2897746B1 EP2897746B1 EP13766032.0A EP13766032A EP2897746B1 EP 2897746 B1 EP2897746 B1 EP 2897746B1 EP 13766032 A EP13766032 A EP 13766032A EP 2897746 B1 EP2897746 B1 EP 2897746B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mold
- edge
- inlet
- metal
- melt
- 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.)
- Active
Links
- 229910052751 metal Inorganic materials 0.000 title claims description 20
- 239000002184 metal Substances 0.000 title claims description 20
- 238000009749 continuous casting Methods 0.000 title claims description 18
- 150000002739 metals Chemical class 0.000 title description 5
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 229910000599 Cr alloy Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 239000000788 chromium alloy Substances 0.000 claims description 2
- 238000005524 ceramic coating Methods 0.000 claims 3
- 238000001816 cooling Methods 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 230000017525 heat dissipation Effects 0.000 description 7
- 238000005266 casting Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 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
- 230000000694 effects Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002826 coolant Substances 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
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- B22D11/0406—Moulds with special profile
-
- 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
- B22D11/059—Mould materials or platings
Definitions
- the invention relates to a device for the continuous casting of metals according to the preamble of claim 1.
- molten metal is poured into a mold, which usually consists of cooled metal plates, especially copper plates. These plates may optionally have a coating on the melt side. These metal plates define between them a mold cavity, wherein the mold cavity is open on the filling side and is also open on an exit side.
- the filled liquid metal passes through this mold and is thereby cooled in the edge regions such that a solidified strand shell of the cast metal forms. Accordingly, out of the exit side of the mold emerges a metal strand which, externally, has substantially the shape dictated by the casting mold.
- This cast strand can be pulled off vertically in particular in the case of a vertical orientation of the casting mold or continuous casting mold or be deflected horizontally with a large bend taking into account the properties of the cast strand.
- the cooling is usually reduced in these areas, wherein in the secondary cooling zone, d. H. in the area in which the slab has usually left the mold and is guided by rollers, the cooling is accomplished by blowing with air or by spraying with water until the strand or the slab is completely cured.
- a reduced cooling can be brought about here by changing the spray intensity.
- a mold or continuous casting mold which consists of four cooled plates, which can be fastened together.
- the oblique surfaces of each corner of the mold cavity are described by a hypotenuse of the right angle between the planes of the plates. This is to achieve improved edge areas, which make it unnecessary to cut certain edge areas.
- From the KR 20040058588 A is also a mold or mold for continuous casting, in which the corner regions are also arranged chamfered, but here the bevels widen from the inlet to the outlet at a constant angle. Which means that the flat area between the slopes becomes narrower.
- JP 2007331000 A From the JP 2007331000 A is also known a mold in which the corners have bevels.
- a cast body is to be generated, which has no internal defects, which are generated by a solidification delay.
- WO 2009/062968 A2 is a width-adjustable mold for the continuous casting of steel or a steel alloy known with a broad side and a variable in its position narrow side, so that during the casting, the width of the strand is adjustable, each narrow side having an inner portion and two outer portions, where the outer portions of the narrow side between the broad side and the inner portion of the narrow side are provided and the outer portions of the narrow side at least partially occupy an angle of ⁇ 90 ° with the broad sides, so that a slab with a chamfer between the narrow side and broadside is poured.
- the task to propose measures with which a marginal shell error can be prevented and at the same time in the hot rolling mill slabs are used with excess, is achieved by a mold that the outer ends of the portions of the narrow sides are flattened and the flattened ends have a wall thickness of 0.5 mm up to 5 mm measured in the direction of the broad side.
- edge shell error can be avoided, which occurs during hot rolling of the slab in the hot rolling mill. This edge shell error has its name on it obtained that this occurs primarily at the edge of the hot strip and sometimes leads beyond the edge of the hot strip to heavy fibrings and damage to the hot strip edge.
- a mold having a mold body made of copper or a copper alloy wherein four mold parts are assembled and whose corner portions include 45 ° angles.
- the inner surfaces are coated with nickel or nickel alloy and also chrome, etc., and placed together, with the coating deposited on the inner surfaces with a uniform thickness.
- From the AT 508823 A1 is a continuous casting mold for continuous casting of a metal strand with wide side walls and slidably disposed between the broad side walls narrow side walls known in the broad side walls and narrow side walls together form a reaching from a Kokilleneingangskante to a Kokillenausgangskante mold cavity for receiving molten metal and the formation of the metal strand and each narrow side wall in three narrow sides ranging from the Kokilleneingangskante to Kokillenausgangskante is divided, in which case the continuous heat dissipation and a targeted edge rotation of the strand shell is to be achieved in transition areas.
- each narrow side wall at the mold inlet edge has a convex contour line which is returned to Kokillenausgangskante in a continuous transition to a straight contour line or on a convex contour line with a smaller curvature than at the Kokillenausgangskante.
- the strand in the edge or corner region of a continuous casting mold is still cooled irregularly in this region by a lifting of the strand from the chill and the resulting formation of edges. and longitudinal cracks, partly also through segregation effects.
- the object of the invention is to provide a device for the continuous casting of metals, in which the Kokilleninnenform allows for improved cooling.
- the object is achieved with a device having the features of claim 1.
- the object is achieved in that - in particular deviating from KR 20040058588 A - Not the effective width of the mold is influenced by a displacement of the inclined surfaces inwards, but the object is achieved in that the narrow slab side is supported improved in the mold, whereby improved heat dissipation in the surface and thus a compensation of the heat edge / surface is achieved with improved stability of the mold.
- this is done by changing the chamfer along the mold from an input angle to an output angle, thereby improving the heat dissipation in the chamfer region. This additionally improves the support and strand shell growth.
- the narrow side is better supported by the angle change without compressing the broad side in the region of the edge as in the prior art.
- the chamfer length remains as constant or proportional to the local shrinkage of the slab.
- a parabolic shape is maintained over the length of the mold, wherein the tips are flattened on the chamfer body to support a thicker coating area.
- the apparatus according to the invention for the continuous casting of metals comprises a mold (not shown), which consists of wide side plates (not shown) and narrow side plates 1 (FIG. Fig. 1 . Fig. 4 ) is trained.
- the narrow side plates 1 are arranged diametrically opposite each other in the assembled state of a mold and preferably arranged on each other and movable away from each other between the wide side plates.
- the narrow sides 1 and the narrow side walls 1 of the mold are flat-plate-like and have a rear, preferably flat surface 2, a parallel thereto extending melt-side surface 3 and side surfaces 4, 5.
- the side surfaces 5 extend from the rear surface 2 in particular at right angles the melt-side surface 3 addition, wherein between the melt-side surface 3 and the side surfaces 4, 5 each have an inclined surface 6, 7 are formed.
- the narrow side wall 1 has an inlet-side end face 9 and an outlet-side end face 8.
- the oblique surfaces 6, 7 have a first angle ⁇ 1 with respect to the melt-side surface 3 (FIG. Fig. 2 ), wherein the angle is 110 ° to 160 °, in particular 130 ° to 140 °.
- the respective side wall 4, 5 projects beyond a projection U1 over the plane of the melt-side surface 3.
- the respective side wall 4, 5 projects with a smaller projection U2 over the plane of the melt-side surface 3, whereby the angle between the respective inclined surface 6, 7 and the melt-side surface 3 increases, optionally also the starting point the respective inclined surface 6, 7 moves slightly more to the longitudinal center of the plate with the melt-side surface.
- the angle ⁇ 2 is in the region of the outlet 115 ° to 165 °, in particular between 135 ° and 145 °.
- the angle thus increases from the inlet to the outlet side, wherein the change can be both continuous and discontinuous. However, it is preferably always ⁇ 2 > ⁇ 1 .
- the narrow side 1 and narrow plate 1 of the mold has the back side also conventional means for attachment 10 and milled cooling grooves 11 for passing a usually liquid cooling medium.
- the plate 1 or narrow side wall 1 has a coating 12 in order to prevent welding of the cast strand, in particular from the inlet-side edge 9 to the outlet-side edge 8.
- the coating 12 preferably extends over the entire surface in the inlet region 9 via the chamfers 6, 7 as well as over the melt-side surface 3.
- the coating 12 can be matched to the steel grades to be cast and be a ceramic, metallic or metal-oxide coating 12.
- the coating 12 may be nickel or chromium or a nickel or chromium alloy based on such alloys.
- the slab narrow side is supported in the mold improved, whereby improved heat dissipation in the surface and thus a balance the heat edge / surface is achieved with improved stability of the mold.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Claims (6)
- Coquille pour la coulée continue d'acier, dans laquelle la coquille est délimitée par quatre parois latérales en forme de plaques, en particulier deux parois latérales étroites opposées et deux parois latérales larges opposées, et par une cavité de la coquille s'étendant d'un bord d'entrée de coquille (9) vers un bord de sortie de coquille (8) pour la réception de métal en fusion et la formation du brin métallique, dans laquelle deux parois opposées dans la région de bord disposent respectivement d'une surface inclinée ou d'un chanfrein a partir d'une paroi latérale respective (4, 5) vers une surface du côté de la masse fondue (3) de telle sorte que les coins de la coquille sont formés avec des surfaces inclinées ou un brin métallique formé est formé avec des chanfreins dans les zones de coins, caractérisé en ce que l'angle (α1, α2) renfermé par les surfaces inclinées (6, 7) avec la surface du côté de la masse fondue (3) de la paroi respective (1), à laquelle elles sont localisées, augmente de l'entrée à la sortie.
- Coquille selon la revendication 1, caractérisée en ce que l'angle (α1, α2) augmente continuellement ou discontinuellement de 110° à 160° sur le côté d'entrée à de 115° à 165° sur le côté de sortie.
- Coquille selon la revendication 1, caractérisée en ce que l'angle (α1, α2) augmente continuellement ou discontinuellement de 130° à 140° sur le côté d'entrée à de 135° à 145° sur le côté de sortie.
- Coquille selon l'une quelconque des revendications précédentes, caractérisée en ce que les surfaces inclinées (6, 7) sont munies d'un revêtement de métal ou de céramique.
- Coquille selon l'une quelconque des revendications précédentes, caractérisée en ce que la surface du côté de la masse fondue (3) est formée avec un revêtement en métal ou un revêtement céramique au moins à partir d'un bord du côté d'entrée (9) jusqu'au centre longitudinal.
- Coquille selon l'une quelconque des revendications précédentes, caractérisée en ce que le revêtement de métal ou le revêtement céramique est un revêtement en un alliage de nickel, ou à base d'un alliage de nickel ou à base de chrome ou à base d'un alliage de chrome.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210108952 DE102012108952A1 (de) | 2012-09-21 | 2012-09-21 | Vorrichtung zum Stranggießen von Metallen |
PCT/EP2013/069583 WO2014044801A1 (fr) | 2012-09-21 | 2013-09-20 | Dispositif de coulée continue de métaux |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2897746A1 EP2897746A1 (fr) | 2015-07-29 |
EP2897746B1 true EP2897746B1 (fr) | 2017-05-17 |
Family
ID=49230748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13766032.0A Active EP2897746B1 (fr) | 2012-09-21 | 2013-09-20 | Dispositif de coulée continue de métaux |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2897746B1 (fr) |
DE (1) | DE102012108952A1 (fr) |
ES (1) | ES2629754T3 (fr) |
WO (1) | WO2014044801A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108356240A (zh) * | 2018-04-13 | 2018-08-03 | 东北大学 | 一种角部高效传热薄板坯窄面曲面结晶器及其设计方法 |
CN108356242A (zh) * | 2018-04-13 | 2018-08-03 | 东北大学 | 一种微合金钢薄板坯边角裂纹控制装备及工艺 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58159945A (ja) * | 1982-03-17 | 1983-09-22 | Mishima Kosan Co Ltd | 連続鋳造用鋳型 |
FR2649918B1 (fr) | 1989-07-19 | 1994-06-10 | Lorraine Laminage | Lingotiere a plaques pour la coulee continue de metal |
KR100518331B1 (ko) | 2002-12-27 | 2005-10-04 | 주식회사 포스코 | 슬래브 연속주조 주형 |
JP4864559B2 (ja) | 2006-06-15 | 2012-02-01 | 株式会社神戸製鋼所 | 連続鋳造用鋳型 |
DE102007054911B4 (de) | 2007-11-15 | 2015-02-05 | Thyssenkrupp Steel Europe Ag | Breitenverstellbare Kokille und Verfahren zur Herstellung eines Warmbandes |
AT508823A1 (de) | 2009-09-29 | 2011-04-15 | Siemens Vai Metals Tech Gmbh | Stranggiesskokille |
-
2012
- 2012-09-21 DE DE201210108952 patent/DE102012108952A1/de not_active Withdrawn
-
2013
- 2013-09-20 WO PCT/EP2013/069583 patent/WO2014044801A1/fr active Application Filing
- 2013-09-20 ES ES13766032.0T patent/ES2629754T3/es active Active
- 2013-09-20 EP EP13766032.0A patent/EP2897746B1/fr active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108356240A (zh) * | 2018-04-13 | 2018-08-03 | 东北大学 | 一种角部高效传热薄板坯窄面曲面结晶器及其设计方法 |
CN108356242A (zh) * | 2018-04-13 | 2018-08-03 | 东北大学 | 一种微合金钢薄板坯边角裂纹控制装备及工艺 |
Also Published As
Publication number | Publication date |
---|---|
WO2014044801A1 (fr) | 2014-03-27 |
ES2629754T3 (es) | 2017-08-14 |
DE102012108952A1 (de) | 2014-05-15 |
EP2897746A1 (fr) | 2015-07-29 |
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