EP0993890A1 - Lingotiére tubulaire de coulée continue en charge des métaux - Google Patents
Lingotiére tubulaire de coulée continue en charge des métaux Download PDFInfo
- Publication number
- EP0993890A1 EP0993890A1 EP99402210A EP99402210A EP0993890A1 EP 0993890 A1 EP0993890 A1 EP 0993890A1 EP 99402210 A EP99402210 A EP 99402210A EP 99402210 A EP99402210 A EP 99402210A EP 0993890 A1 EP0993890 A1 EP 0993890A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ingot mold
- mold
- metal
- flange
- metal part
- 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 48
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 48
- 238000009749 continuous casting Methods 0.000 title claims abstract description 12
- 150000002739 metals Chemical class 0.000 title claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 239000011819 refractory material Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 229910001338 liquidmetal Inorganic materials 0.000 description 8
- 238000007711 solidification Methods 0.000 description 8
- 230000008023 solidification Effects 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 238000002604 ultrasonography Methods 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
-
- 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
Definitions
- the invention relates to the continuous casting of metals, such as steel. More specifically, it concerns cooled bottomless ingot molds, in which the solidification of the cast product, and even more precisely the tubular ingot molds, the cooled metal part is provided, on its upper edge, with a material extension refractory. This makes it possible to transfer the level of the surface of the liquid metal present in the ingot mold above the metal part of the ingot mold where the solidification of the cast product.
- the continuous casting of steel is carried out conventionally by initiating the solidification of molten metal in a bottomless ingot mold whose walls are energetically cooled externally by circulation of a liquid such as water.
- This ingot mold is made of a material which is a good conductor of heat such as copper and its alloys. It can consist of an assembly of plates or a tubular part unique, defining an interior space corresponding to the desired shape for the product cast: of circular, square or rectangular cross section more or less elongated. In the case of pouring slightly elongated square or rectangular products, it is generally the solution of a single tubular part which is retained. This solution is mandatory for products with circular cross-section. A jacket of the ingot mold on its external face ensures cooling by circulation of water.
- the latter is printed with vertical oscillations of low frequency (a few Hz) and of amplitude equal to a few mm, and the interface between the solidified metal and the ingot mold is lubricated.
- This lubrication is obtained using a fusible cover powder or an oil, which is deposited on the surface of the liquid metal and which infiltrates between the metal being solidified and the ingot mold. Oil can also be brought to the interface through the wall metal of the mold.
- the tubular metal part of the mold is extended upwards by a tubular part of refractory material of the same internal dimensions, and the flow of metal entering and leaving the ingot mold is regulated so as to maintain the surface of the liquid metal present in the ingot mold inside this refractory enhancement.
- the solidification of the metal is initiated by permanence at the junction between the refractory part and the metal part of the ingot mold, in other words where the metal undergoes its first contact with a cooled wall good conductor of heat.
- the sound or ultrasonic emitters are fixed on a flange which is secured to the upper end portion of the metal part of the mold, where it replaces the liner that cools the rest of the mold height.
- a canal water circulation is provided between the mold and the collar so that the this portion of the mold can be cooled.
- This configuration provides said portion of the mold with independent cooling, which can be adjusted optimally so as to guarantee a good initiation of solidification of the product sunk.
- it is essential that the connection between the ingot mold and the flange has at all points a high rigidity, which makes it inadvisable to use removable fixing means of a piece on the other. The best known method that can be used for this is probably the electron beam welding process.
- the object of the invention is to propose an ingot mold design for a machine of continuous casting under load adapted to the application to said vibration mold sound or ultrasonic and having all the necessary reliability for a large number of flows.
- the invention relates to a tubular ingot mold for continuous casting in metal charge, having a cooled metal part intended to be fitted with transmitters sound or ultrasound imposing vibrations and to be surmounted by an enhancement refractory material, the upper end portion of said metal part being cooled by circulation of water in a channel formed on its external face and closed laterally by a collar which surrounds said upper terminal portion and is secured by welding, characterized in that said metal part has below of its upper terminal portion a lateral protuberance which is integrated therein manufacturing, and on the upper face of which said flange is fixed by welding.
- the invention consists in shaping the upper end of the metal part of the mold so as to integrate a manufacturing lateral outgrowth. Below this outgrowth, the cooling of the part metal of the mold is ensured by the usual lining. Above this protrusion, the cooling of the metal part of the mold is ensured by a channel which is machined there and closed laterally by a flange welded to the upper face of the protrusion and at the upper edge of the mold.
- Sound or ultrasonic emitters 14, 15 are applied against the flange 2, for the purpose of imparting vibrations to the metal part 1, for the reasons explained upper.
- the number of these transmitters is variable; in the case of a section ingot mold square or rectangular, we generally have at least one on each side of the ingot mold.
- the emitters 14, 15 are applied to surfaces bevelled 16, 17 formed on the outer upper edge of the collar 1, so that the vibrations impressed on the metallic part 1 have both a horizontal component and a vertical component and that these vibrations are obtained using a single family transmitters (see in this regard patent EP 0 403 411).
- transmitters 14, 15 are conceivable, depending on the type of vibrations that one wishes to impose on the metal part 1.
- the ingot mold according to the invention shown in Figure 2 is distinguished essentially from the ingot mold of the prior art shown in FIG. 1 in that its metal part 1 has a lateral protrusion 18, integrated in the manufacturing part metallic 1 and located below its upper end 19. Between this end upper 19 and the protrusion 18 is machined a cooling channel 20 closed by a flange 21.
- This flange is similar in its functions to the flange 2 of FIG. 1, and is fixed to the metal part 1 by means of two welds produced by a beam of electrons. One 22 of these welds is made at the upper end 19 of the metal part 1, therefore above the machining of the channel 20.
- the other weld 23 is made on the upper face 24 of the projection 18.
- transmitters 14, 15 are fixed on the flange 21, for example on bevelled surfaces 23, 24
- the configuration according to the invention makes it possible to reduce to two instead of three the number of welds between the flange 21 and the metal part 1.
- these welds 22, 23 are subject to less thermal and mechanical stresses than welds 3, 6, 7 from the previous configuration. None found, like weld 6, nearby liquid metal or solidification present in the interior space 11 of the metal part 1.
- the weld 22, the closest to the hot metal is distant from the transmitters 14, 15, which reduces the mechanical stresses which it must support.
- the metallic tubular part 1 is produced by a process extrusion, which allows to provide at one of its ends a portion of large diameter. Once machined as indicated, this terminal portion forms the part upper of said tubular part 1, with its protrusion 18 and its channel 20. During this machining, it is preferable to make the junctions 27, 28 between the protrusion 18 and the vertical straight portion of the metallic tubular part 1 with a radius of curvature, and not with a sharp angle, to reduce the concentration of stresses at their level.
- the placement of the transmitters 14, 15 on bevelled edges of the flange 21 is only one example. According to the orientation that is desired for the vibrations, the transmitters 14 can also be applied, 15 horizontally or vertically against the flange 21. Alternatively, the transmitters 14, 15 no longer on the collar 21, but on the protrusion 18.
- the accumulated deformations at the welds between the tubular metal part 1 of the mold and the flange 21 which closes the channel cooling can be limited, and the welds remain in the elastic range.
- the lifetime of the ingot mold can thus be considerably increased, up to reach a thousand flows.
- tubular metal part 1 of the mold it is also possible use any other process than extrusion, the main thing being that it leads to the realization of a single piece shaped as indicated.
- the tubular metal part 1 of the mold can have a total height of 700 mm, and to be surmounted by a refractory riser 8 in height 200 mm.
- the flange 21 can have a height of 60 mm and an external dimension of 240 mm, and the protrusion 18 can have a thickness of 10 to 15 mm.
- organs of the mold directly linked to the problem posed and its resolution.
- organs which ensure the lubrication of the interface ingot mold-product and which may, if necessary, comprise a cooled annular part fitted with an oil injection slot, inserted between the metal tubular part and the enhances refractory.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Description
- la figure 1 qui montre schématiquement, vue en coupe transversale, une lingotière pour coulée continue en charge conforme à l'art antérieur ;
- la figure 2 qui montre de la même façon une lingotière de coulée continue en charge selon l'invention.
- une partie métallique tubulaire 1, de section par exemple carrée, réalisée en un matériau bon conducteur de la chaleur tel que le cuivre ou un de ses alliages ;
- une collerette 2, qui entoure la portion terminale supérieure de la partie métallique tubulaire 1, réalisée en un matériau analogue à celui de ladite partie tubulaire 1 ; ces deux pièces sont solidarisées par une soudure 3 réalisée par un procédé utilisant un faisceau d'électrons ; elles sont usinées de manière à ménager entre elles un canal 4 dans lequel on peut faire circuler un fluide de refroidissement tel que de l'eau ; ce canal 4, dans la configuration représentée, est obturé par un couvercle métallique 5 qui est soudé, également par un procédé à faisceau d'électrons, à la partie tubulaire 1 et à la collerette 2 au moyen de soudures 6, 7 ;
- une rehausse en matériau réfractaire 8, de forme tubulaire, fixée sur le rebord supérieur 9 de la partie métallique 1, et dont l'espace intérieur 10 prolonge l'espace intérieur 11 de la partie métallique 1 ; ces espaces intérieurs 10, 11 sont destinés à renfermer le métal liquide en cours de solidification et définissent la forme du produit coulé ; conformément au principe de la coulée continue en charge, pour les raisons qui ont été précédemment exposées, la surface supérieure du métal liquide présent dans la lingotière est maintenue en permanence dans l'espace intérieur 10 de la rehausse réfractaire 8 ;
- une chemise 12 qui entoure la partie métallique 1 en dessous de la collerette 2 ; un espace 13 est ménagé entre la partie métallique 1 et la chemise 12, dans lequel on fait circuler de l'eau de refroidissement.
Claims (4)
- Lingotière tubulaire de coulée continue en charge des métaux, ayant une partie métallique refroidie (1) destinée à être munie d'émetteurs sonores ou ultrasonores (14, 15) lui imposant des vibrations et à être surmontée d'une rehausse (8) en matériau réfractaire, la portion terminale supérieure de ladite partie métallique (1) étant refroidie par circulation d'eau dans un canal (20) ménagé sur sa face externe et obturé latéralement par une collerette (21) qui entoure ladite portion terminale supérieure et lui est solidarisée par soudage, caractérisée en ce que ladite partie métallique (1) comporte en dessous de sa portion terminale supérieure une excroissance latérale (18) qui lui est intégrée de fabrication, et sur la face supérieure (24) de laquelle ladite collerette (21) est fixée par soudage.
- Lingotière selon la revendication 1, caractérisée en ce que sa partie métallique refroidie (1) est fabriquée par un procédé d'extrusion, suivi par un usinage de sa portion terminale supérieure et de ladite excroissance (18).
- Lingotière selon la revendication 1 ou 2, caractérisée en ce que lesdits émetteurs (14, 15) sont appliqués sur ladite collerette (21).
- Lingotière selon la revendication 1 ou 2, caractérisée en ce que lesdits émetteurs (14, 15) sont appliqués sur ladite excroissance (18).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9811915A FR2783731B1 (fr) | 1998-09-24 | 1998-09-24 | Lingotiere tubulaire de coulee continue en charge des metaux |
| FR9811915 | 1998-09-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0993890A1 true EP0993890A1 (fr) | 2000-04-19 |
| EP0993890B1 EP0993890B1 (fr) | 2003-05-21 |
Family
ID=9530779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99402210A Expired - Lifetime EP0993890B1 (fr) | 1998-09-24 | 1999-09-09 | Lingotiére tubulaire de coulée continue en charge des métaux |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0993890B1 (fr) |
| JP (1) | JP2000107836A (fr) |
| KR (1) | KR20000023427A (fr) |
| AT (1) | ATE240804T1 (fr) |
| BR (1) | BR9904330A (fr) |
| CA (1) | CA2282937A1 (fr) |
| DE (1) | DE69908059D1 (fr) |
| FR (1) | FR2783731B1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015107511A1 (fr) * | 2014-01-20 | 2015-07-23 | Danieli & C. Officine Meccaniche S.P.A. | Cristallisoir pour coulée continue, et son procédé de production |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUD20130137A1 (it) | 2013-10-23 | 2015-04-24 | Danieli Off Mecc | Cristallizzatore per colata continua e metodo per la sua realizzazione |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1031135A (fr) * | 1951-01-18 | 1953-06-19 | Procédé perfectionné de moulage des métaux | |
| GB2117293A (en) * | 1982-03-27 | 1983-10-12 | Kabel Metallwerke Ghh | Process for the production of a tubular mould for continuous casting |
| JPS59189041A (ja) * | 1983-04-12 | 1984-10-26 | Nippon Steel Corp | 超音波振動用連続鋳造鋳型 |
| US4691757A (en) * | 1984-05-10 | 1987-09-08 | Voest-Alpine Aktiengesellschaft | Arrangement provided at a continuous casting plant |
| US4702299A (en) * | 1984-11-05 | 1987-10-27 | Kabel-Und Metallwerke Gutehoffnungshuette Ag | Mold for continuous casting and method of making |
| US5355935A (en) * | 1989-06-12 | 1994-10-18 | Institut De Recherches De La Siderurgie Francaise (Irsid) | Method and device for vibrating an ingot mould for the continuous casting of metals |
-
1998
- 1998-09-24 FR FR9811915A patent/FR2783731B1/fr not_active Expired - Fee Related
-
1999
- 1999-09-09 EP EP99402210A patent/EP0993890B1/fr not_active Expired - Lifetime
- 1999-09-09 DE DE69908059T patent/DE69908059D1/de not_active Expired - Lifetime
- 1999-09-09 AT AT99402210T patent/ATE240804T1/de not_active IP Right Cessation
- 1999-09-22 KR KR1019990041131A patent/KR20000023427A/ko not_active Withdrawn
- 1999-09-23 CA CA002282937A patent/CA2282937A1/fr not_active Abandoned
- 1999-09-23 BR BR9904330-0A patent/BR9904330A/pt active Search and Examination
- 1999-09-24 JP JP11309784A patent/JP2000107836A/ja not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1031135A (fr) * | 1951-01-18 | 1953-06-19 | Procédé perfectionné de moulage des métaux | |
| GB2117293A (en) * | 1982-03-27 | 1983-10-12 | Kabel Metallwerke Ghh | Process for the production of a tubular mould for continuous casting |
| JPS59189041A (ja) * | 1983-04-12 | 1984-10-26 | Nippon Steel Corp | 超音波振動用連続鋳造鋳型 |
| US4691757A (en) * | 1984-05-10 | 1987-09-08 | Voest-Alpine Aktiengesellschaft | Arrangement provided at a continuous casting plant |
| US4702299A (en) * | 1984-11-05 | 1987-10-27 | Kabel-Und Metallwerke Gutehoffnungshuette Ag | Mold for continuous casting and method of making |
| US5355935A (en) * | 1989-06-12 | 1994-10-18 | Institut De Recherches De La Siderurgie Francaise (Irsid) | Method and device for vibrating an ingot mould for the continuous casting of metals |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 009, no. 055 (M - 362) 9 March 1985 (1985-03-09) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015107511A1 (fr) * | 2014-01-20 | 2015-07-23 | Danieli & C. Officine Meccaniche S.P.A. | Cristallisoir pour coulée continue, et son procédé de production |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000107836A (ja) | 2000-04-18 |
| BR9904330A (pt) | 2000-09-05 |
| KR20000023427A (ko) | 2000-04-25 |
| FR2783731B1 (fr) | 2000-11-10 |
| EP0993890B1 (fr) | 2003-05-21 |
| DE69908059D1 (de) | 2003-06-26 |
| CA2282937A1 (fr) | 2000-03-24 |
| FR2783731A1 (fr) | 2000-03-31 |
| ATE240804T1 (de) | 2003-06-15 |
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