EP0868952A1 - Lingotière de coulée continue des métaux - Google Patents
Lingotière de coulée continue des métaux Download PDFInfo
- Publication number
- EP0868952A1 EP0868952A1 EP98400564A EP98400564A EP0868952A1 EP 0868952 A1 EP0868952 A1 EP 0868952A1 EP 98400564 A EP98400564 A EP 98400564A EP 98400564 A EP98400564 A EP 98400564A EP 0868952 A1 EP0868952 A1 EP 0868952A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plates
- channels
- plate
- ingot mold
- mold
- 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
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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
- B22D11/055—Cooling the moulds
Definitions
- the invention relates to the continuous casting of metals. More specifically, it concerns bottomless ingot molds with energetically cooled walls in which the solidification of the liquid metal poured on continuous casting machines begins.
- Ingot molds for continuous casting of steel slabs are constituted by a assembly of four plates of a metal that is a good conductor of heat, such as copper or a copper alloy. They are energetically cooled by a circulation coolant (usually water), and define a pour space in which the liquid metal is introduced and initiates its solidification against the walls said plates facing the casting space. Water cooling plates flows through vertical channels inside the plates, and this circulation is oriented from the bottom to the top of the mold.
- a circulation coolant usually water
- the object of the invention is to propose a configuration of a casting mold continuous metal products, especially steel, which has in its part superior solidification and cooling capacity of liquid metal significantly increased compared to conventionally used molds.
- This ingot mold configuration would be particularly suitable to constitute the part metallic steel from a continuous casting installation in charge of steel slabs.
- the subject of the invention is a mold for the continuous casting of metals, of the type constituted by an assembly of four metal plates comprising channels arranged in their interior, oriented vertically and intended to make there circulate a coolant, characterized in that at least two of said plates have one or more channels in the interior of their upper part horizontal coolant circulation independent of said channels vertically oriented, said vertically oriented channels ending below said upper part.
- the ingot mold is a casting ingot mold continuous steel slab with two large plates and two small plates, and at least the large plates have in the interior of their upper part a or independent horizontal coolant circulation channels said vertically oriented channels, said vertically oriented channels stopping below said upper part.
- the invention consists in providing for the part top of at least two mold plates (large plates for one continuous slab casting mold) an independent cooling circuit, the interior of which the cooling water flows horizontally. This circulation generally takes place from the center to the edges of the plate.
- Figure 1 shows the upper part of a metal plate 1 made of copper or copper alloy which can constitute one face of a continuous casting ingot mold of steel slabs according to the invention.
- Its internal face 2 (oriented towards the rear of the plane of the Figure 1) is intended to be turned towards the casting space, and therefore to come into contact with the liquid metal to solidify and cool it.
- Its external face 3 is provided with vertical grooves (not shown) inside which water flows from bottom to top cooling in the directions indicated by the arrows 4.
- a jacket (not shown), with water inlet and outlet ports, completes the circuit cooling water line, unless grooves and inlet holes and water outlet are not provided in the plate 1 itself.
- said vertically oriented channels stop below of said upper part the plate 1.
- This comprises in its upper part means, independent of the previous ones, to circulate cooling water there in a direction no longer vertical but horizontal, and ensuring a distribution of this water from the center to the edges of the plate 1.
- the plate 1 has in its upper part a bulge 5 turned towards its external face 3, and inside which two channels 6a, 6b are formed horizontal parallel to the internal face 2 of the plate 1. These channels 6a, 6b are juxtaposed and separated by a partition 7 of small thickness. Each of them is supplied with water through an inlet orifice 8a, 8b opening onto the external face of the bulge 5 and placed in the immediate vicinity of the median plane of the plate 1.
- the channels 6a, 6b have, for example, a height "h” of 40 to 60 mm, and a width "e” which preferably does not exceed 10 mm so that the flow regime water is not too turbulent. Too much turbulence would deteriorate the quality of the heat exchanges between the water and the internal face 2 of the plate 1.
- the invention makes it possible, as has been said, to provide at the level of the meniscus liquid metal present in the mold an intense cooling, even if this meniscus is kept close to the top edges of the cooled metal plates 1 of the mold.
- the solidification of the product can thus begin more certainly than with the usual ingot molds.
- we can if necessary modulate significantly the extraction of heat between the center and the ends of plate 1 and act thus on the gradient of solidification and cooling speed between the center and the edges of the plate 1.
- the metal part 11 results from the assembly of two large plates (including one 13 is only visible in Figure 2) and two small plates (one of which 14 is only visible in Figure 2).
- the large plates are similar to the one shown on Figure 1, except that the outlet ports 15, 15 'of the cooling water open onto the external face of the large plate, in the immediate vicinity of its sides and not on its sides themselves. In addition, they each have two channels of circulation of water, and therefore two separate orifices 16, 16 ′ for entering the water.
- a heterogeneity of the right / left distribution of the cooling water is hardly to be feared, and this configuration gives here an entirely acceptable result.
- the plates 13, 14 of the metal part 11 of the mold are cooled in a conventional manner.
- FIG 2 there is also shown the nozzle 19 of refractory material which feeds the liquid metal ingot mold from a container (not shown) to which its upper end is connected.
- the lower end of the nozzle 19 is held inside the part in refractory 12.
- the metal enters the casting space by two opposite openings 20, 20 ′ which pass through the lower end of the wall of the nozzle 19 and are each oriented towards a small side of the pouring space ,.
- the liquid metal can undergo very intense cooling as soon as it comes into contact with the metal part 11 of the mold, and this allows a solid initiation of solidification from this level, which contributes to good quality surface of the cast product. In addition, this prevents overheating of the upper area of the metal part 11 of the mold.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Nonmetallic Welding Materials (AREA)
- Glass Compositions (AREA)
- Holo Graphy (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
Description
- le niveau où s'initie la solidification est fixé en permanence à l'extrémité supérieure des plaques métalliques de la lingotière, et n'est plus dépendant des fluctuations du niveau du ménisque, inévitables sur les machines classiques ;
- l'extrémité de la busette qui alimente la lingotière en acier liquide est, elle aussi, maintenue à l'intérieur de la réhausse, et les turbulences liées à l'arrivée de l'acier ont ainsi le temps de s'amortir avant que l'acier ne parvienne à l'extrémité supérieure des plaques.
- la figure 1 qui montre, vu en perspective, un exemple de plaque destinée à une lingotière selon l'invention ;
- la figure 2 qui représente, vue en perspective, une lingotière de coulée continue en charge de brames selon l'invention.
- une partie métallique 11 en cuivre ou alliage de cuivre, composée de l'assemblage de quatre plaques selon l'invention, similaires à celles qui ont été précédemment décrites et représentées sur la figure 1 ;
- une partie en matériau réfractaire 12, dite "réhausse", qui prolonge la partie métallique 11, dont les fonctions ont été exposées dans le préambule de la description.
Claims (5)
- Lingotière de coulée continue des métaux, du type constitué par un assemblage de quatre plaques métalliques comportant des canaux ménagés dans leur intérieur, orientés verticalement et destinés à y faire circuler un fluide de refroidissement, caractérisée en ce qu'au moins deux desdites plaques (1, 13, 14) comportent dans l'intérieur de leur partie supérieure un ou des canaux horizontaux (6a, 6b) de circulation de fluide de refroidissement indépendants desdits canaux orientés verticalement, lesdits canaux orientés verticalement s'arrêtant en-dessous de ladite partie supérieure.
- Lingotière selon la revendication 1, caractérisée en ce qu'il s'agit d'une lingotière de coulée continue de brames d'acier comportant deux grandes plaques (13) et deux petites plaques (14), et en ce que au moins les grandes plaques (13) comportent dans l'intérieur de leur partie supérieure un ou des canaux horizontaux (6a, 6b) de circulation de fluide de refroidissement indépendants desdits canaux orientés verticalement, lesdits canaux orientés verticalement s'arrêtant en-dessous de ladite partie supérieure.
- Lingotière selon la revendication 2, caractérisée en ce que au moins ses grandes plaques (13) comportent chacune dans leur partie supérieure deux canaux horizontaux (6a, 6b) de circulation de fluide de refroidissement séparés l'un de l'autre par une cloison (7), dont les orifices d'entrée respectifs (8a, 8b) sont tous deux placés au voisinage immédiat du plan médian de la plaque, et dont les orifices de sortie respectifs (8'a, 8'b) sont placés chacun sur un côté (9) ou au voisinage immédiat d'un des côtés de la plaque (1).
- Lingotière selon la revendication 3, caractérisée en ce que ses petites plaques (14) comportent chacune un canal horizontal pourvu d'un orifice d'alimentation (18) situé sur l'axe médian de la plaque (14) et de deux orifices de sortie (17, 17') placés chacun sur un côté ou au voisinage immédiat d'un des côtés de la plaque (14).
- Lingotière selon l'une des revendications 1 à 4, caractérisée en ce qu'elle est surmontée par une réhausse (12) en matériau réfractaire.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9703634A FR2761282B1 (fr) | 1997-03-26 | 1997-03-26 | Plaque de lingotiere de machine de coulee continue des metaux, et lingotiere incluant de telles plaques |
FR9703634 | 1997-03-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0868952A1 true EP0868952A1 (fr) | 1998-10-07 |
EP0868952B1 EP0868952B1 (fr) | 2002-11-06 |
Family
ID=9505165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98400564A Expired - Lifetime EP0868952B1 (fr) | 1997-03-26 | 1998-03-11 | Lingotière de coulée continue de métaux |
Country Status (8)
Country | Link |
---|---|
US (1) | US6102100A (fr) |
EP (1) | EP0868952B1 (fr) |
JP (1) | JP4224732B2 (fr) |
AT (1) | ATE227180T1 (fr) |
CA (1) | CA2234432C (fr) |
DE (1) | DE69809104T2 (fr) |
ES (1) | ES2186102T3 (fr) |
FR (1) | FR2761282B1 (fr) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB954719A (en) * | 1962-04-02 | 1964-04-08 | Continuous Casting Company Ltd | Improvements in the construction of continuous casting moulds |
US3685571A (en) * | 1970-02-16 | 1972-08-22 | Ural Z Tyazhclogo Mashinostroe | Cooling system for continuous casting mold |
GB2017551A (en) * | 1978-04-03 | 1979-10-10 | Voest Alpine Montan Ag | Method of Cooling a Reciprocating Continuous Casting Mould |
JPS63171248A (ja) * | 1987-01-08 | 1988-07-15 | Nkk Corp | アルミおよびアルミ合金鋳片ホツトトツプ鋳造用銅モ−ルド |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5020585A (en) * | 1989-03-20 | 1991-06-04 | Inland Steel Company | Break-out detection in continuous casting |
FR2703609B3 (fr) * | 1993-03-30 | 1995-02-10 | Lorraine Laminage | Procédé de coulée continue en charge des métaux et lingotière pour sa mise en Óoeuvre. |
-
1997
- 1997-03-26 FR FR9703634A patent/FR2761282B1/fr not_active Expired - Fee Related
-
1998
- 1998-03-11 DE DE69809104T patent/DE69809104T2/de not_active Expired - Lifetime
- 1998-03-11 AT AT98400564T patent/ATE227180T1/de active
- 1998-03-11 ES ES98400564T patent/ES2186102T3/es not_active Expired - Lifetime
- 1998-03-11 EP EP98400564A patent/EP0868952B1/fr not_active Expired - Lifetime
- 1998-03-18 CA CA002234432A patent/CA2234432C/fr not_active Expired - Fee Related
- 1998-03-23 US US09/045,693 patent/US6102100A/en not_active Expired - Lifetime
- 1998-03-26 JP JP09843898A patent/JP4224732B2/ja not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB954719A (en) * | 1962-04-02 | 1964-04-08 | Continuous Casting Company Ltd | Improvements in the construction of continuous casting moulds |
US3685571A (en) * | 1970-02-16 | 1972-08-22 | Ural Z Tyazhclogo Mashinostroe | Cooling system for continuous casting mold |
GB2017551A (en) * | 1978-04-03 | 1979-10-10 | Voest Alpine Montan Ag | Method of Cooling a Reciprocating Continuous Casting Mould |
JPS63171248A (ja) * | 1987-01-08 | 1988-07-15 | Nkk Corp | アルミおよびアルミ合金鋳片ホツトトツプ鋳造用銅モ−ルド |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 012, no. 437 (M - 765) 17 November 1988 (1988-11-17) * |
Also Published As
Publication number | Publication date |
---|---|
CA2234432C (fr) | 2008-07-29 |
US6102100A (en) | 2000-08-15 |
EP0868952B1 (fr) | 2002-11-06 |
ES2186102T3 (es) | 2003-05-01 |
ATE227180T1 (de) | 2002-11-15 |
FR2761282A1 (fr) | 1998-10-02 |
DE69809104T2 (de) | 2003-07-17 |
JPH10277709A (ja) | 1998-10-20 |
JP4224732B2 (ja) | 2009-02-18 |
DE69809104D1 (de) | 2002-12-12 |
CA2234432A1 (fr) | 1998-09-26 |
FR2761282B1 (fr) | 1999-04-30 |
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