EP1144142B1 - Seitendamm für bandstranggiessmaschine - Google Patents
Seitendamm für bandstranggiessmaschine Download PDFInfo
- Publication number
- EP1144142B1 EP1144142B1 EP99961097A EP99961097A EP1144142B1 EP 1144142 B1 EP1144142 B1 EP 1144142B1 EP 99961097 A EP99961097 A EP 99961097A EP 99961097 A EP99961097 A EP 99961097A EP 1144142 B1 EP1144142 B1 EP 1144142B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support plate
- face
- active part
- side wall
- casting
- 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.)
- Expired - Lifetime
Links
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
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
-
- 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
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/0648—Casting surfaces
- B22D11/066—Side dams
-
- 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
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
Definitions
- the invention relates to the continuous casting of metals. It concerns more particularly installations for the continuous casting of thin metallic strips of the type called "casting between cylinders".
- Directly pouring thin metal strips a few mm thick from liquid metal can take place on a so-called “casting between cylinders" installation, supplied with liquid metal from a distributor, using a pouring nozzle.
- the machine has an ingot mold whose casting space is delimited on its long sides by a pair of internally cooled cylinders with parallel horizontal axes rotating around of these axes in opposite directions, and on its short sides by closing plates in refractory material, called "side faces", which are applied by thrust against the flat ends of the cylinders.
- the solidification of the liquid metal is product against cooled cylindrical surfaces of cylinders, by skin formation solidified that is joined at the neck (the area where the gap between the surfaces cylinders is minimal) to form the strip, which is continuously extracted from the space of casting.
- the cylinders can be replaced by bands cooled by scroll, which is given a curved shape at the entrance to the casting space.
- These installations also have side faces similar to those of casting between cylinders, and means for applying these lateral faces against the edges tapes. They are usually designated by the term "inter-band casting".
- each side face is constituted as follows. It includes firstly a support plate, preferably made of a material with strong insulating properties, such as silica. Most often, it is fixed on its rear face (the one facing outside the pouring space) to a metal plate on which the organs act thrust. But if the support plate has mechanical strength and rigidity sufficient, it can be expected that the thrust members exert their action directly on the support plate. On the front face of this support plate, there is the active part of the lateral face, i.e. the material or materials which are intended to come into contact with cylinders and liquid metal.
- the external areas of this active part which must come into contact with the cylinders or be in the vicinity of the neck, are made in a first material for which the qualities of resistance to abrasion and to corrosion by liquid metal.
- a first material for which the qualities of resistance to abrasion and to corrosion by liquid metal such as SiAlON® or silicon carbide
- the zone central part of this active part, which must be in contact with the liquid metal is produced in a second material for which insulating properties are preferred, such as foam silica.
- the element or elements making up the external zones are often designated by the term "Insert", and the element or elements forming the remainder of the lateral face by the term "heart".
- the lateral faces have a fundamental importance in the success of a casting metal strips between cylinders, in particular steel strips.
- a bad tightness of their contacts with the edges of the cylinders can lead to exfiltration of liquid metal outside the casting space, which compromises the regularity of the operation of the installation, therefore the quality of the tape. In extreme cases, these exfiltration can lead to stopping the flow.
- a rupture during casting of one of its elements, or a decohesion of the multiple elements making up the face active lead to stop the casting without delay. Special attention must therefore be made to the choice of materials making up the lateral faces, some of which (in the materials making up the insert) are very expensive.
- the assembly of the lateral face is an operation complex that must be performed by highly qualified and careful personnel, and this assembly (as well as the drying of the refractories and the bonding materials used which follows) is time consuming.
- the side panels can only be used for one single casting, after which they are disassembled, and at least their active part is brought to scum.
- the side faces constitute one of the main elements of the cost of operation of an installation for casting thin strips between cylinders (or, in general, between two walls which are cooled in movement), and any technical progress which would reduce spending on time and related matters, without altering their performance and reliability is highly desirable.
- the object of the invention is to propose a design of the lateral faces of a installation of casting thin metal strips between two walls cooled in scrolling whose cost of manufacture and use is significantly lowered compared to with side faces of classic design.
- the invention relates to a lateral face for closing the space of casting of a continuous casting installation of thin metal strips between two walls cooled in movement, in particular of "casting between cylinders" or of “casting between bands ", of the type comprising a support plate, on the rear face of which thrust members exert their action in order to apply said lateral face to the slices of said walls cooled, optionally by means of a plate metallic integral with the rear face of the support plate, and an active face disposed against the front face of the support plate, the lateral portions of which are intended to wear out in contact with said sections of said walls cooled to a maximum depth "e” and a width "1", the support plate and the active part being brought into contact with one another in a way allowing their non-destructive separation, characterized in that the front face of the support plate has in its central part a recess whose the depth is greater than "e”, and in that the outer edges of said front face have a general shape which matches that of the outer edges of the active part and have a
- the invention consists in designing the lateral face of so as to authorize a use of its active part for no longer just one, but two flows, by simply turning this active part between the two flows. To this end, we must in particular give a particular shape to the front face of the support plate. This results in considerable savings on the preparation time of the lateral face prior to the second casting in the series.
- the various elements of the lateral faces have not been shown to scale in the figures.
- the casting rolls have a diameter of the order of 500 to 1500 mm, and the collar has a width of a few mm, corresponding to the thickness of the strips that one desires flow.
- the support plate 2 and the active core 9-insert 10 part are maintained one against the other, preferably by means used to separate them after casting without destroying them or, at least, without damaging the support plate 2, so that this the latter can be reused after said casting.
- Bolting, or a solid cradle of the support plate 2 or integrated into it and into which the active part is inserted, are examples of such means.
- the side face 1 After having been used for a single casting, the side face 1 is located in the state shown in Figure le.
- the portions of insert 10 which rubbed against the cylinders have been eroded to a depth "e" which can be of the order of several mm, even a few cm (typically about 10 mm), depending on the duration of the pouring, the nature of the material of insert 10 and the amount of friction to which it has been subjected.
- the heart 9 was dug under the effect of corrosion by liquid metal, and also under the effect of friction with the moving liquid metal inside the casting space 12.
- the active part is often covered, at least in places, with a layer of solidified metal 13 which is deposited there at the end of casting. For these reasons, the active part of the side face 1 is no longer reusable during a subsequent casting, unless one performs machining of the entire active part in order to restore its surface condition initial, which would be long and costly.
- the common elements with the side face 1 according to the prior art are designated by the same references.
- a support plate 15 of insulating refractory material the rear face 3 is secured to a metal plate 4 on which the thrust members act.
- the front face 16 of the support plate 15 is not flat: it has in its central part, over its entire height, a recess 17 whose shape and function will explained below.
- the active part of this lateral face 14 also has a configuration special. It has a central plate 18 made of a low-insulating refractory coefficient of expansion (based on silica, for example), having on both sides recesses 19, 20. In each of these recesses 19, 20, a formed assembly is housed a core 21, 21 'and an insert 22, 22', whose constitutions and dimensions (at the possible exception of the thickness) are identical to those of the core 10 and the insert 9 of the lateral face 1 according to the prior art previously described.
- the two heart-insert sets 21-22, 21'-22 ' are secured to the central plate 18 by means of an adhesive allowing relative displacements of the glued parts sufficient to absorb the expansions differentials due to the different natures of the materials involved.
- An example of such glue consists of the product marketed under the name "REFRACOL N ° 4 ", which is a refractory jointing cement based on corundum, comprising a binder based on sodium silicate. This binder makes the glue glassy at high temperature, so as to allow the relative movements of the glued parts while working in shear.
- the support plate 15 and the active part of the lateral face 14 must, this time, must be held against each other by means authorizing their non-destructive decoupling, such as those already cited as an example for the lateral face 1 of the prior art (bolting, cradle).
- the lateral face 14 After having been prepared and assembled, the lateral face 14 according to the invention is mounted on the casting machine, in the position shown in Figure 2a, and used the usual way for a first pour. At the end of this first pour, the face before the active part is found in the state previously described (and represented on the Figure 1c) of the front face of the active part of the side face 1 of the prior art.
- the cylinders have worn the outer edges of the insert 22 to a thickness "e" and a width "1"
- the core 21 has been hollowed out by chemical and mechanical erosion due to the liquid metal, and solidified metal 13 covers at least in places the front face of the active part.
- the active part of the lateral face 14 is separated from the support plate 15, then turned over and replaced on the support plate 15.
- the core 21 and the insert 22 which constituted the front face of the active part during the first pour may constitute the rear face during a second pour.
- the core 21 'and the insert 22', which constituted the rear face of the active part during the first casting constitute the front face during this second casting.
- the recess 17 of the support plate 15 must meet the following conditions. Its depth must be sufficient for the parts of the insert 22 and of the core 21 which are in relief of a thickness equal to "e" (or possibly greater than "e” in areas where solidified metal 13 is present) relative to the worn outer edges of the insert 22 can be housed there after the reversal of the active face. In other words, the depth of the recess 17 must be greater than the sum of "e” and the maximum thickness of the layers of solidified metal 13. It is therefore necessary to estimate at least roughly the maximum values that could take these parameters during the first casting, and manufacture the support plate 15 in result.
- said central plate 25 is a simple flat plate whose outline matches that of the 22-core 21 insert assembly.
- the cohesion of the entire active part of the lateral face 24 is provided by a preferably metallic belt 26 similar to the belt 11 of the lateral face 1 of the prior art described above, while the configuration of the side face 14 of the previous example amounted to integrating such a belt to the central plate 18 itself.
- the presence of a belt 26 independent of the central plate 25 is advantageous in that it facilitates the cohesion of the central plate 25 even in the event of rupture thereof.
- this element 29 must seal the casting space 12 by its contact with the cylinders, it must be made of a material for which the resistance properties to wear and corrosion by metal must be favored. But he must also have, optimally, insulating properties as good as possible and good resistance thermal shock and cracking, to have acceptable behavior in its central part. Materials such as boron nitride-SiAlON® can be used for this effect.
- the invention can be applied not only to casting installations between cylinders, but also to all types of thin strip casting installations metallic using lateral faces according to the aforementioned prior art which are applies against slices of walls that are being cooled while traveling, such as installations between bands.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Coating With Molten Metal (AREA)
- Casting Devices For Molds (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Examining Or Testing Airtightness (AREA)
- Rod-Shaped Construction Members (AREA)
Claims (5)
- Seitenwand zum Verschliessen des Giessraumes einer Anlage zum Stranggiessen dünner metallischer Bänder zwischen zwei gekühlten sich bewegenden Wänden, insbesondere zum Giessen zwischen Walzen "oder zum " Giessen zwischen Bändern mit einer Stützplatte (15), deren rückwärtige Seite (3) von einer Andruckanordnung beaufschlagt wird, um die Seitenwand an Abschnitte der gekühlten Wände anzudrücken, gegebenenfalls unter Zwischenanordnung einer metallischen, fest mit' der rückwärtigen Seite (3) der Stützplatte (15) verbundenen Platine (4) und mit einer aktiven Fläche, die auf der vorderen Seite der Stützplatte (15) angeordnet ist und deren seitliche Bereiche dazu dienen, sich während des Kontaktes mit den Abschnitten der gekühlten Wände abzunutzen bis zu einer maximalen Tiefe "e" und über eine Breite "l", wobei die Stützplatte (15) und das aktive Teil miteinander in einer Weise verbunden sind, die ihre zerstörungsfreie Zerlegung ermöglicht, dadurch gekennzeichnet, dass die vordere Seite der Stützplatte in ihrem mittigen Bereich eine Aussparung (17) aufweist, deren Tiefe grösser als "e" ist und dass die Aussenränder (23, 23') dieser vorderen Seite im allgemeinen eine Form aufweisen, die an die Aussenränder des aktiven Teils angepasst ist und eine Breite kleiner als "1" aufweisen.
- Seitenwand nach Anspruch 1, dadurch gekennzeichnet, dass sie einen das aktive Teil umgebenden Ring (26) aufweist.
- Seitenwand nach Ansprüchen 1 und 2, dadurch gekennzeichnet, dass das aktive Teil wenigstens einen Kern (21) und einen Einsatz (22) aufweist.
- Seitenwand nach Anspruch 3, dadurch gekennzeichnet, dass das aktive Teil eine mittige Platte (18) aufweist, die auf jeder ihrer beiden Seiten mit einem Kern (21, 21') und mit einem Einsatz (22, 22') versehen ist.
- Seitenwand nach Anspruch 4, dadurch gekennzeichnet, dass der Ring in den Aufbau der mittigen Platte (18) selbst integriert ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9816185A FR2787360B1 (fr) | 1998-12-21 | 1998-12-21 | Face laterale pour installation de coulee continue de bandes metalliques |
FR9816185 | 1998-12-21 | ||
PCT/FR1999/003175 WO2000037198A1 (fr) | 1998-12-21 | 1999-12-17 | Face laterale pour installation de coulee continue de bandes metalliques |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1144142A1 EP1144142A1 (de) | 2001-10-17 |
EP1144142B1 true EP1144142B1 (de) | 2002-09-04 |
Family
ID=9534280
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99961097A Expired - Lifetime EP1144142B1 (de) | 1998-12-21 | 1999-12-17 | Seitendamm für bandstranggiessmaschine |
Country Status (14)
Country | Link |
---|---|
US (1) | US6488075B1 (de) |
EP (1) | EP1144142B1 (de) |
JP (1) | JP4567200B2 (de) |
KR (1) | KR100664431B1 (de) |
AT (1) | ATE223270T1 (de) |
AU (1) | AU753213C (de) |
BR (1) | BR9916389A (de) |
DE (1) | DE69902820T2 (de) |
DK (1) | DK1144142T3 (de) |
ES (1) | ES2183632T3 (de) |
FR (1) | FR2787360B1 (de) |
PT (1) | PT1144142E (de) |
TW (1) | TW445182B (de) |
WO (1) | WO2000037198A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5837758B2 (ja) | 2011-04-27 | 2015-12-24 | キャストリップ・リミテッド・ライアビリティ・カンパニー | 双ロール鋳造装置及びその制御方法 |
US10046384B2 (en) | 2015-09-30 | 2018-08-14 | Nucor Corporation | Side dam with pocket |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6336955A (ja) * | 1986-07-30 | 1988-02-17 | Nippon Yakin Kogyo Co Ltd | 金属薄板帯の直接鋳造装置 |
JPH0344363Y2 (de) * | 1986-12-04 | 1991-09-18 | ||
JPS63196340U (de) * | 1987-06-09 | 1988-12-16 | ||
JPH0385152U (de) * | 1989-12-14 | 1991-08-28 | ||
JPH05261489A (ja) * | 1992-03-19 | 1993-10-12 | Kobe Steel Ltd | 薄鋳片連続鋳造機用サイド堰 |
FR2721843B1 (fr) * | 1994-06-30 | 1996-08-30 | Unisor Sacilor | Disposition de coulee continue entre cylindres a parois d'obturation laterale appliquees |
CN1071605C (zh) * | 1994-06-30 | 2001-09-26 | 维苏威乌斯法国公司 | 薄钢板连铸机的侧壁 |
FR2737859B1 (fr) * | 1995-08-18 | 1997-09-12 | Usinor Sacilor | Dispositif de soutien d'une face laterale d'une installation de coulee continue de bandes metalliques entre cylindres |
JPH09206892A (ja) * | 1996-01-29 | 1997-08-12 | Nippon Steel Corp | 薄板連続鋳造装置のサイド堰 |
FR2749785B1 (fr) * | 1996-06-13 | 1998-07-24 | Usinor Sacilor | Face laterale d'obturation pour installation de coulee continue de bandes metalliques entre deux cylindres |
JP3340344B2 (ja) * | 1997-03-25 | 2002-11-05 | 日立造船株式会社 | ツインロール式連続鋳造設備における短辺堰の製造方法 |
-
1998
- 1998-12-21 FR FR9816185A patent/FR2787360B1/fr not_active Expired - Fee Related
-
1999
- 1999-12-17 DK DK99961097T patent/DK1144142T3/da active
- 1999-12-17 JP JP2000589296A patent/JP4567200B2/ja not_active Expired - Fee Related
- 1999-12-17 DE DE69902820T patent/DE69902820T2/de not_active Expired - Lifetime
- 1999-12-17 WO PCT/FR1999/003175 patent/WO2000037198A1/fr active IP Right Grant
- 1999-12-17 AT AT99961097T patent/ATE223270T1/de active
- 1999-12-17 EP EP99961097A patent/EP1144142B1/de not_active Expired - Lifetime
- 1999-12-17 US US09/868,038 patent/US6488075B1/en not_active Expired - Fee Related
- 1999-12-17 KR KR1020017007598A patent/KR100664431B1/ko not_active IP Right Cessation
- 1999-12-17 PT PT99961097T patent/PT1144142E/pt unknown
- 1999-12-17 BR BR9916389-6A patent/BR9916389A/pt not_active IP Right Cessation
- 1999-12-17 AU AU17829/00A patent/AU753213C/en not_active Ceased
- 1999-12-17 ES ES99961097T patent/ES2183632T3/es not_active Expired - Lifetime
-
2000
- 2000-01-26 TW TW089101267A patent/TW445182B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
AU753213B2 (en) | 2002-10-10 |
FR2787360A1 (fr) | 2000-06-23 |
WO2000037198A1 (fr) | 2000-06-29 |
KR20010093846A (ko) | 2001-10-29 |
US6488075B1 (en) | 2002-12-03 |
AU753213C (en) | 2003-05-15 |
TW445182B (en) | 2001-07-11 |
DE69902820D1 (de) | 2002-10-10 |
PT1144142E (pt) | 2003-01-31 |
AU1782900A (en) | 2000-07-12 |
DK1144142T3 (da) | 2003-01-06 |
ATE223270T1 (de) | 2002-09-15 |
JP4567200B2 (ja) | 2010-10-20 |
KR100664431B1 (ko) | 2007-01-03 |
ES2183632T3 (es) | 2003-03-16 |
JP2002532258A (ja) | 2002-10-02 |
DE69902820T2 (de) | 2003-05-15 |
BR9916389A (pt) | 2001-09-18 |
EP1144142A1 (de) | 2001-10-17 |
FR2787360B1 (fr) | 2001-02-02 |
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