EP0622138A1 - Process and device for making at least one metal strip of small width and metal strip obtained by this process - Google Patents
Process and device for making at least one metal strip of small width and metal strip obtained by this process Download PDFInfo
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- EP0622138A1 EP0622138A1 EP94400850A EP94400850A EP0622138A1 EP 0622138 A1 EP0622138 A1 EP 0622138A1 EP 94400850 A EP94400850 A EP 94400850A EP 94400850 A EP94400850 A EP 94400850A EP 0622138 A1 EP0622138 A1 EP 0622138A1
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- Prior art keywords
- orifice
- molten material
- groove
- metal strip
- nozzle
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- 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
- B22D11/0651—Casting wheels
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- 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
- B22D11/064—Accessories therefor for supplying molten metal
- B22D11/0642—Nozzles
Definitions
- the present invention relates to a method and to a device for producing at least one narrow metal strip as well as to a metal strip produced by this process.
- the invention also relates to a nozzle used for the preparation of this metal strip.
- strip is intended to mean a body of elongated shape and whose transverse dimensions are much less than its length.
- the wires, the sheets as well as the metallic ribbons are for example considered as metallic bands.
- oxidizing agent such as for example metallic supports for catalysts.
- Such orifices are regularly disposed at the lower end of the nozzle in a direction transverse to the direction of movement of the surface of the cooling member and are facing downward facing said cooling surface.
- the cooling member is formed for example by a wheel.
- This technique makes it possible to form metal strips of small width between 0.5 and 1.5 mm on the cooling surface, the thickness of which is limited to certain values which depend on the widths of these strips.
- an orifice with a diameter equal to 1 mm makes it possible, for example, to form on the cooling surface a metal strip with a width equal to 1 mm and whose thickness cannot exceed 30 ⁇ m which is unacceptable for applications where a minimum thickness of 40 ⁇ m is required.
- the Applicant has logically considered increasing the diameter of the circular orifices of the nozzle so that the thickness of the metal strips is greater.
- the Applicant has envisaged reducing the speed of movement of the cooling member in order to increase the thickness of the metal strip formed.
- the object of the invention is to remedy these drawbacks by proposing a method and a device for producing at least one metal strip of small width and having a thickness greater than that of the metal strips obtained by the technique of previously cited prior art.
- the invention also relates to a nozzle for the preparation of at least one narrow metal strip formed of a vertical body in which is formed an internal channel for the passage of a molten material and comprising at one of its so-called lower ends a plate provided with at least one orifice for ejecting the molten material onto a mobile cooling surface, characterized in that said orifice has an elongated shape in the direction of movement of said cooling surface and which is contained in a substantially horizontal plane.
- the invention also relates to a metal strip of small width obtained by the process mentioned above, characterized in that said metal strip has a width less than or equal to 2mm.
- the metal strip has a thickness greater than or equal to 30 ⁇ m.
- the device designated as a whole by the reference 1 is intended in the preparation of at least one metal strip 2 of small width and comprises a metallurgical container 3, called a distributor, containing a molten material 4.
- the metallurgical container 3 has for example a general shape flared upwards 3a and its cross section is rectangular.
- the molten material 4 contained in the metallurgical container 3 is maintained at a temperature above its melting temperature by means for example of a conventional induction coil and not shown, arranged around said container 3 and over its entire height.
- the molten material is formed for example by a metal alloy of the following weight composition: chromium from 15 to 25%, aluminum from 4 to 10%, the rest being made up of iron and possibly rare earths or elements assimilated to rare earths.
- the metallurgical container 3 comprises in its constricted lower part 3b, a nozzle 10 communicating with said container 3 and integral with the latter by conventional means not shown.
- the nozzle 10 is for example provided on its upper external face with a thread corresponding to a thread located on the inner wall of a conduit arranged in the bottom of the container 3, thus allowing its fixing by screwing.
- the nozzle 10 is formed of a vertical body 11 in which is formed an internal channel 12 communicating with the metallurgical container 3 and allowing the flow of molten metal 4 towards one of the ends 10a called the bottom of the nozzle 10 .
- the vertical body 11 is provided at its lower part with a horizontal plate 11a perpendicular to the side walls of the vertical body 11 and comprising at least one orifice 13.
- the device 1 also comprises at least one movable cooling surface 20 situated under the nozzle 10 and facing the orifice 13.
- This cooling surface 20, formed for example by the surface of a wheel 21, is provided with at least one groove 22 disposed opposite the orifice 13 and in alignment with the latter.
- the orifice 13 has an elongated shape in the direction of movement of the cooling surface 20 and which is contained in a substantially horizontal plane.
- the orifice 13 has the function of allowing the ejection of the molten material 4 in the direction of the cooling surface 20, and its shape favors the ejection of said molten material in the groove 22 placed opposite said orifice 13 in which it solidifies by forming the metal strip 2.
- this molten material is subjected to a sufficiently high pressure by placing the metallurgical container 3 in communication with atmospheric pressure and by having a sufficient height of molten material in said metallurgical container 3.
- the plate 11a of the vertical body 11 is provided with four identical orifices 13 which are parallel to one another and regularly spaced a distance substantially greater than the greatest width of each orifice 13 and for example equal to 1.5 times the greatest width of the orifice.
- the cooling surface 20 of the wheel 21 has four grooves 22 each arranged opposite an orifice 13 of the nozzle 10 and parallel to each other.
- the respective dimensions of the grooves 22 and the orifices 13 are judiciously chosen to obtain metal strips 2 of a given width and whose thickness is reinforced compared to that of metal strips obtained in a conventional manner by the casting of molten metal onto a cooling surface through orifices of circular shape.
- the Applicant has also found that the use of a nozzle with elongated orifices for ejecting molten material onto a smooth cooling surface is not satisfactory since the width of the strips thus formed is further increased than their thickness.
- each groove 22 in its upper part 22a is greater than the greatest width of each orifice 13.
- each groove 22 in its upper part 22a is between 1.5 and 5 times the largest width of each orifice 13 and is for example equal to 1.75 times the largest width of each orifice.
- each groove 22 can be given an adapted shape.
- each groove 22 is between one and twenty times the thickness of the strip 2, preferably between one and ten times this thickness and more preferably between one and five times the thickness of the metal strip 2.
- each groove 22 is 4.5 times the target thickness of the metal strip.
- each groove 22 has a trapezoidal transverse profile, but this shape is in no way limiting and, transverse profiles in the form of a V or semi-circular can be envisaged.
- Each orifice 13 is located at a distance from the cooling surface 20 of between 0.1 and 2mm, preferably between 0.1 and 1mm and for example equal to 0.5mm.
- each orifice 13 has an oblong shape, but can also take various elongated shapes depending on the geometry desired for the metal strips 2.
- each orifice 13 is less than 6mm, preferably less than 3mm and for example equal to 2.8mm.
- the linear speed of movement of the cooling surface 20 is between 10 and 60 m / s and preferably between 30 and 45 m / s.
- the metal strips 2 produced by the method according to the invention have a width less than or equal to 2 mm and a thickness greater than or equal to 30 ⁇ m.
- metal strips with a width of 1.2mm and a thickness of 45 ⁇ m are produced using a nozzle with an oblong orifice 2.8mm long and 0.8mm wide for a linear speed of movement of the cooling surface 20 to 40 m / s.
- an orifice nozzle circular with a diameter of 1.1mm would have made it possible to obtain a metal strip 1.2mm wide and 30 ⁇ m thick.
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Abstract
Description
La présente invention est relative à un procédé et à un dispositif d'élaboration d'au moins une bande métallique de faible largeur ainsi qu'à une bande métallique élaborée par ce procédé.The present invention relates to a method and to a device for producing at least one narrow metal strip as well as to a metal strip produced by this process.
L'invention est également relative à une buse utilisée pour l'élaboration de cette bande métallique.The invention also relates to a nozzle used for the preparation of this metal strip.
On entend par bande, un corps de forme allongée et dont les dimensions transversales sont très inférieures à sa longueur. Les fils, les feuilles ainsi que les rubans métalliques sont par exemple considérés comme des bandes métalliques.The term “strip” is intended to mean a body of elongated shape and whose transverse dimensions are much less than its length. The wires, the sheets as well as the metallic ribbons are for example considered as metallic bands.
Pour certaines applications technologiques, les industriels sont amenés à employer des bandes métalliques de dimensions particulières, et notamment exigent que ces bandes aient une épaisseur minimale pour garantir par exemple leur résistance à l'oxydation à chaud lorsqu'elles sont en contact avec un milieu fortement oxydant comme par exemple pour des supports métalliques de catalyseurs.For certain technological applications, manufacturers are led to use metal strips of particular dimensions, and in particular require that these strips have a minimum thickness to guarantee, for example, their resistance to hot oxidation when they are in contact with a strongly medium. oxidizing agent such as for example metallic supports for catalysts.
Parmi les techniques utilisées jusqu'à présent permettant de réaliser des bandes métalliques, on connaît notamment celle qui consiste à éjecter un métal ou un alliage de métaux en fusion à travers des orifices de forme circulaire ménagés à la partie inférieure d'une buse en vue de le déposer sur une surface d'un organe de refroidissement mobile situé au-dessous de ladite buse, afin de provoquer la solidification de ce métal ou de cet alliage sur ladite surface de refroidissement.Among the techniques used up to now for producing metal strips, we know in particular that which consists in ejecting a metal or a molten metal alloy through circular orifices formed in the lower part of a nozzle in view depositing it on a surface of a mobile cooling member located below said nozzle, in order to cause solidification of this metal or of this alloy on said cooling surface.
De tels orifices sont régulièrement disposés à l'extrémité inférieure de la buse suivant une direction transversale par rapport à la direction de déplacement de la surface de l'organe de refroidissement et sont tournés vers le bas en regard de ladite surface de refroidissement.Such orifices are regularly disposed at the lower end of the nozzle in a direction transverse to the direction of movement of the surface of the cooling member and are facing downward facing said cooling surface.
L'organe de refroidissement est formé par exemple par une roue.The cooling member is formed for example by a wheel.
Cette technique permet de former sur la surface de refroidissement des bandes métalliques de faible largeur comprise entre 0,5 et 1,5mm et dont l'épaisseur est limitée à certaines valeurs qui dépendent des largeurs de ces bandes.This technique makes it possible to form metal strips of small width between 0.5 and 1.5 mm on the cooling surface, the thickness of which is limited to certain values which depend on the widths of these strips.
Ainsi, un orifice de diamètre égal à 1mm permet par exemple de former sur la surface de refroidissement une bande métallique de largeur égale à 1mm et dont l'épaisseur ne peut dépasser 30µm ce qui est inacceptable pour des applications où une épaisseur minimale de 40µm est requise.Thus, an orifice with a diameter equal to 1 mm makes it possible, for example, to form on the cooling surface a metal strip with a width equal to 1 mm and whose thickness cannot exceed 30 μm which is unacceptable for applications where a minimum thickness of 40 μm is required.
Pour remédier à ce problème plusieurs solutions ont été envisagées par la demanderesse.To remedy this problem, several solutions have been envisaged by the applicant.
Tout d'abord, la Demanderesse a envisagé de manière logique d'augmenter le diamètre des orifices circulaires de la buse afin que l'épaisseur des bandes métalliques soit plus élevée.First of all, the Applicant has logically considered increasing the diameter of the circular orifices of the nozzle so that the thickness of the metal strips is greater.
Mais cette solution a eu pour conséquence d'augmenter davantage la largeur desdites bandes que leur épaisseur et les produits métalliques ainsi formés n'étaient plus en conformité avec les exigences dimensionnelles des utilisateurs.However, the effect of this solution was to increase the width of said strips more than their thickness and the metal products thus formed were no longer in accordance with the dimensional requirements of the users.
Ensuite, la Demanderesse a envisagé de réduire la vitesse de déplacement de l'organe de refroidissement pour augmenter l'épaisseur de la bande métallique formée.Next, the Applicant has envisaged reducing the speed of movement of the cooling member in order to increase the thickness of the metal strip formed.
Or, en diminuant cette vitesse, on a constaté une perte d'adhérence du métal sur la surface de refroidissement pouvant conduire à une altération de la solidification du métal constituant la bande métallique.However, by decreasing this speed, there has been a loss of adhesion of the metal to the cooling surface which can lead to an alteration in the solidification of the metal constituting the metal strip.
A cet effet, des essais ont été effectués en modifiant la nature et la rugosité de la surface de refroidissement afin de renforcer l'adhérence du métal sur ladite surface de refroidissement.To this end, tests have been carried out in modifying the nature and the roughness of the cooling surface in order to reinforce the adhesion of the metal to said cooling surface.
Cependant, de telles modifications n'ont pas contribué au renforcement de l'adhérence sur la surface de l'organe de refroidissement.However, such modifications did not contribute to the strengthening of the adhesion to the surface of the cooling member.
L'invention a pour but de remédier à ces inconvénients en proposant un procédé et un dispositif d'élaboration d'au moins une bande métallique de faible largeur et possédant une épaisseur supérieure par rapport à celle des bandes métalliques obtenues par la technique de l'art antérieur précédemment citée.The object of the invention is to remedy these drawbacks by proposing a method and a device for producing at least one metal strip of small width and having a thickness greater than that of the metal strips obtained by the technique of previously cited prior art.
L'invention a donc pour objet un procédé d'élaboration d'au moins une bande métallique de faible largeur à partir d'un matériau en fusion maintenu à une température supérieure à sa température de fusion et contenu dans un récipient métallurgique, procédé selon lequel on injecte le matériau en fusion à travers une buse solidaire dudit récipient métallurgique et on solidifie le matériau en fusion sur une surface de refroidissement mobile située au-dessous de ladite buse, caractérisé en ce que :
- on soumet le matériau en fusion a une pression au moins égale à la pression atmosphérique,
- on éjecte ledit matériau en fusion à travers au moins un orifice de forme allongée ménagé à la partie inférieure de ladite buse,
- on solidifie ledit matériau en fusion dans au moins une rainure ménagée sur ladite surface de refroidissement et disposée en vis à vis dudit orifice et dans l'alignement de celui-ci,
- et simultanément on déplace ladite surface de refroidissement suivant la direction longitudinale de ladite rainure.
- the molten material is subjected to a pressure at least equal to atmospheric pressure,
- said molten material is ejected through at least one elongated orifice formed at the bottom of said nozzle,
- said molten material is solidified in at least one groove formed on said cooling surface and arranged opposite said orifice and in alignment with it,
- and simultaneously moving said cooling surface in the longitudinal direction of said groove.
L'invention a également pour objet un dispositif d'élaboration d'au moins une bande métallique de faible largeur pour la mise en oeuvre du procédé mentionné ci-dessus et comprenant :
- un récipient métallurgique contenant un matériau en fusion maintenu à une température supérieure à sa température de fusion et comportant dans sa partie inférieure au moins une buse communiquant avec celui-ci et étant munie à une de ses extrémités dite inférieure d'au moins un orifice pour l'éjection du matériau en fusion,
- au moins une surface de refroidissement mobile située au-dessous de la buse en regard dudit orifice et destinée à recevoir le matériau en fusion et à la solidifier,
caractérisé en ce que le récipient métallurgique contenant le matériau en fusion est à une pression au moins égale à la pression atmosphérique et en ce que l'orifice présente une forme allongée suivant la direction de déplacement de la surface de refroidissement et qui est contenue dans un plan sensiblement horizontal, ladite surface de refroidissement étant pourvue d'au moins une rainure disposée en vis à vis dudit orifice et dans l'alignement de celui-ci.The subject of the invention is also a device for producing at least one narrow metal strip for implementing the method mentioned above and comprising:
- a metallurgical container containing a molten material maintained at a temperature above its melting temperature and comprising in its lower part at least one nozzle communicating with it and being provided at one of its ends called lower with at least one orifice for ejection of the molten material,
- at least one mobile cooling surface located below the nozzle opposite said orifice and intended to receive the molten material and to solidify it,
characterized in that the metallurgical container containing the molten material is at a pressure at least equal to atmospheric pressure and in that the orifice has an elongated shape in the direction of movement of the cooling surface and which is contained in a substantially horizontal plane, said cooling surface being provided with at least one groove disposed opposite said orifice and in alignment with the latter.
Selon d'autres caractéristiques de l'invention :
- la largeur de la rainure dans sa partie haute est supérieure à la plus grande largeur de l'orifice,
- la profondeur de la rainure est comprise entre 1 et 20 fois l'épaisseur de la bande métallique,
- la rainure a un profil transversal trapézoïdal, ou en forme de V, ou semi-circulaire,
- l'orifice a une forme oblongue,
- la rainure est ménagée à la surface d'une roue.
- the width of the groove in its upper part is greater than the greatest width of the orifice,
- the depth of the groove is between 1 and 20 times the thickness of the metal strip,
- the groove has a trapezoidal, or V-shaped, or semi-circular transverse profile,
- the orifice has an oblong shape,
- the groove is formed on the surface of a wheel.
L'invention a également pour objet une buse pour l'élaboration d'au moins une bande métallique de faible largeur formée d'un corps vertical dans lequel est ménagé un canal interne pour le passage d'un matériau en fusion et comportant à une de ses extrémités dite inférieure une plaque munie d'au moins un orifice pour l'éjection du matériau en fusion sur une surface de refroidissement mobile, caractérisée en ce que ledit orifice a une forme allongée suivant la direction de déplacement de ladite surface de refroidissement et qui est contenue dans un plan sensiblement horizontal.The invention also relates to a nozzle for the preparation of at least one narrow metal strip formed of a vertical body in which is formed an internal channel for the passage of a molten material and comprising at one of its so-called lower ends a plate provided with at least one orifice for ejecting the molten material onto a mobile cooling surface, characterized in that said orifice has an elongated shape in the direction of movement of said cooling surface and which is contained in a substantially horizontal plane.
L'invention a encore pour objet une bande métallique de faible largeur obtenue par le procédé mentionné ci-dessus, caractérisée en ce que ladite bande métallique a une largeur inférieure ou égale à 2mm.The invention also relates to a metal strip of small width obtained by the process mentioned above, characterized in that said metal strip has a width less than or equal to 2mm.
Selon une caractéristique préférentielle, la bande métallique a une épaisseur supérieure ou égale à 30µm.According to a preferred characteristic, the metal strip has a thickness greater than or equal to 30 μm.
D'autres caractéristiques et avantages apparaîtront au cours de la description qui va suivre, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés, sur lesquels :
- la Fig. 1 est une vue schématique en perspective du dispositif d'élaboration d'au moins une bande métallique selon un mode de réalisation de l'invention,
- la Fig. 2 est une vue en coupe longitudinale de la buse du dispositif selon l'invention,
- la Fig. 3 est une vue de dessous de la buse du dispositif selon l'invention,
- la Fig. 4 est une vue schématique partielle de dessus de l'organe de refroidissement du dispositif selon l'invention.
- Fig. 1 is a schematic perspective view of the device for producing at least one metal strip according to one embodiment of the invention,
- Fig. 2 is a view in longitudinal section of the nozzle of the device according to the invention,
- Fig. 3 is a view from below of the nozzle of the device according to the invention,
- Fig. 4 is a partial schematic view from above of the cooling member of the device according to the invention.
Comme représenté à la Fig. 1, le dispositif désigné dans son ensemble par la référence 1 est destiné à l'élaboration d'au moins une bande métallique 2 de faible largeur et comprend un récipient métallurgique 3, appelé répartiteur, contenant un matériau en fusion 4.As shown in Fig. 1, the device designated as a whole by the
Le récipient métallurgique 3 a par exemple une forme générale évasée vers le haut 3a et sa section transversale est rectangulaire.The
Le matériau en fusion 4 contenu dans le récipient métallurgique 3 est maintenu a une température supérieure à sa température de fusion au moyen par exemple d'une bobine d'induction classique et non représentée, disposée autour dudit récipient 3 et sur toute sa hauteur.The molten material 4 contained in the
Le matériau en fusion est formé par exemple par un alliage métallique de composition pondérale suivante :
chrome de 15 à 25%, aluminium de 4 à 10%, le reste étant constitué par du fer et éventuellement des terres rares ou des éléments assimilés aux terres rares.The molten material is formed for example by a metal alloy of the following weight composition:
chromium from 15 to 25%, aluminum from 4 to 10%, the rest being made up of iron and possibly rare earths or elements assimilated to rare earths.
Le récipient métallurgique 3 comporte dans sa partie inférieure resserrée 3b, une buse 10 communiquant avec ledit récipient 3 et solidaire de celui-ci par des moyens classiques non représentés.The
A cet effet, la buse 10 est par exemple munie sur sa face supérieure externe d'un filetage correspondant à un filetage situé sur la paroi interne d'un conduit aménagé dans le fond du récipient 3, permettant ainsi sa fixation par vissage.For this purpose, the
Comme représenté à la Fig. 2, la buse 10 est formée d'un corps vertical 11 dans lequel est ménagé un canal interne 12 communiquant avec le récipient métallurgique 3 et permettant l'écoulement du métal en fusion 4 vers l'une des extrémités 10a dite inférieure de la buse 10.As shown in Fig. 2, the
Le corps vertical 11 est muni à sa partie inférieure d'une plaque horizontale 11a perpendiculaire aux parois latérales du corps vertical 11 et comportant au moins un orifice 13.The
Comme représenté à la Fig. 1, le dispositif 1 selon l'invention comprend également au moins une surface de refroidissement mobile 20 située sous la buse 10 et en regard de l'orifice 13.As shown in Fig. 1, the
Cette surface de refroidissement 20, formée par exemple par la surface d'une roue 21, est pourvue d'au moins une rainure 22 disposée en vis à vis de l'orifice 13 et dans l'alignement de celui-ci.This cooling
L'orifice 13 a une forme allongée suivant la direction de déplacement de la surface de refroidissement 20 et qui est contenue dans un plan sensiblement horizontal.The
L'orifice 13 a pour fonction de permettre l'éjection du matériau en fusion 4 en direction de la surface de refroidissement 20, et sa forme favorise l'éjection dudit matériau en fusion dans la rainure 22 placée en vis à vis dudit orifice 13 dans laquelle il se solidifie en formant la bande métallique 2.The
Pour assurer l'éjection du matériau en fusion par l'orifice 13, ce matériau en fusion est soumis à une pression suffisamment élevée en mettant le récipient métallurgique 3 en communication avec la pression atmosphérique et en disposant d'une hauteur suffisante de matériau en fusion dans ledit récipient métallurgique 3.To ensure the ejection of the molten material through the
Il est également possible lorsque la pression due à la hauteur de matériau en fusion 4 contenu dans le récipient métallurgique 3 est trop faible, d'adjoindre un gaz sous pression au-dessus du niveau supérieur dudit matériau en fusion 4.It is also possible when the pressure due to the height of molten material 4 contained in the
Comme représenté sur les Figs. 2 et 3, la plaque 11a du corps vertical 11 est munie de quatre orifices 13 identiques parallèles entre eux et régulièrement espacés d'une distance sensiblement supérieure à la plus grande largeur de chaque orifice 13 et par exemple égale à 1,5 fois la plus grande largeur de l'orifice.As shown in Figs. 2 and 3, the
De ce fait, la surface de refroidissement 20 de la roue 21 comporte quatre rainures 22 disposée chacune en vis à vis d'un orifice 13 de la buse 10 et parallèles entre elles.Therefore, the cooling
Les dimensions respectives des rainures 22 et des orifices 13 sont judicieusement choisies pour obtenir des bandes métalliques 2 d'une largeur donnée et dont l'épaisseur est renforcée par rapport à celle de bandes métalliques obtenues de manière classique par la coulée de métal en fusion sur une surface de refroidissement à travers des orifices de forme circulaire.The respective dimensions of the
La Demanderesse a également constaté que l'utilisation d'une buse à orifices de forme allongée pour éjecter un matériau en fusion sur une surface de refroidissement lisse n'est pas satisfaisante étant donné que l'on augmente davantage la largeur des bandes ainsi formées que leur épaisseur.The Applicant has also found that the use of a nozzle with elongated orifices for ejecting molten material onto a smooth cooling surface is not satisfactory since the width of the strips thus formed is further increased than their thickness.
Pour cela, la largeur de chaque rainure 22 dans sa partie haute 22a est supérieure à la plus grande largeur de chaque orifice 13.For this, the width of each
De préférence, la largeur de chaque rainure 22 dans sa partie haute 22a est comprise entre 1,5 et 5 fois la plus grande largeur de chaque orifice 13 et est par exemple égale à 1,75 fois la plus grande largeur de chaque orifice.Preferably, the width of each
Selon la forme que l'on désire obtenir pour les bandes métalliques 2, on peut donner à la partie basse 22b de chaque rainure 22 une forme adaptée.Depending on the shape that it is desired to obtain for the
La profondeur de chaque rainure 22 est comprise entre une et vingt fois l'épaisseur de la bande 2, de préférence comprise entre une et dix fois cette épaisseur et plus préférentiellement comprise entre une et cinq fois l'épaisseur de la bande métallique 2.The depth of each
Par exemple, la profondeur de chaque rainure 22 est égale à 4,5 fois l'épaisseur visée de la bande métallique.For example, the depth of each
Comme représenté à la Fig. 4, chaque rainure 22 a un profil transversal trapézoïdal, mais cette forme n'est aucunement limitative et, des profils transversaux en forme de V ou semi-circulaire peuvent être envisagés.As shown in Fig. 4, each
Chaque orifice 13 est situé à une distance de la surface de refroidissement 20 comprise entre 0,1 et 2mm, de préférence comprise entre 0,1 et 1mm et par exemple égale à 0,5mm.Each
Selon un mode de réalisation préférentiel représenté à la Fig. 3, chaque orifice 13 a une forme oblongue, mais peut également revêtir des formes allongées diverses en fonction de la géométrie souhaitée pour les bandes métalliques 2.According to a preferred embodiment shown in FIG. 3, each
La longueur de chaque orifice 13 est inférieure à 6mm, de préférence inférieure à 3mm et par exemple égale à 2,8mm.The length of each
La vitesse linéaire de déplacement de la surface de refroidissement 20 est comprise entre 10 et 60m/s et de préférence comprise entre 30 et 45m/s.The linear speed of movement of the cooling
Les bandes métalliques 2 élaborées par le procédé selon l'invention ont une largeur inférieure ou égale à 2mm et une épaisseur supérieure ou égale à 30µm.The metal strips 2 produced by the method according to the invention have a width less than or equal to 2 mm and a thickness greater than or equal to 30 μm.
Dans une rainure de profondeur de 0,2mm, de largeur en partie haute de 1,4mm et de largeur en partie basse de 1,2mm, on élabore des bandes métalliques de largeur de 1,2mm et d'épaisseur de 45µm en utilisant une buse à orifice oblong de 2,8mm de longueur et de 0,8mm de largeur pour une vitesse linéaire de déplacement de la surface de refroidissement 20 à 40 m/s.In a groove with a depth of 0.2mm, a width at the top of 1.4mm and a width at the bottom with 1.2mm, metal strips with a width of 1.2mm and a thickness of 45µm are produced using a nozzle with an oblong orifice 2.8mm long and 0.8mm wide for a linear speed of movement of the cooling
Selon l'art antérieur, une buse à orifice circulaire de diamètre égal à 1,1mm aurait permis d'obtenir une bande métallique de 1,2mm de largeur et de 30 µm d'épaisseur.According to the prior art, an orifice nozzle circular with a diameter of 1.1mm would have made it possible to obtain a metal strip 1.2mm wide and 30 µm thick.
Claims (20)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9305042A FR2704464B1 (en) | 1993-04-28 | 1993-04-28 | Method and device for producing at least one narrow metal strip and metal strip obtained by this process. |
FR9305042 | 1993-04-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0622138A1 true EP0622138A1 (en) | 1994-11-02 |
EP0622138B1 EP0622138B1 (en) | 1998-08-12 |
Family
ID=9446547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94400850A Expired - Lifetime EP0622138B1 (en) | 1993-04-28 | 1994-04-19 | Process and device for making at least one metal strip of small width and metal strip obtained by this process |
Country Status (5)
Country | Link |
---|---|
US (1) | US5642771A (en) |
EP (1) | EP0622138B1 (en) |
JP (1) | JPH0747449A (en) |
DE (1) | DE69412333T2 (en) |
FR (1) | FR2704464B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107755653A (en) * | 2017-10-17 | 2018-03-06 | 江苏粤阜合金材料有限公司 | Integrated aluminium strip pressure rolling trimming production line |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US6626228B1 (en) * | 1998-08-24 | 2003-09-30 | General Electric Company | Turbine component repair system and method of using thereof |
FR2792217B1 (en) * | 1999-04-16 | 2001-06-15 | Renault | DEVICE FOR TREATING THE EXHAUST GASES OF A MOTOR VEHICLE ENGINE, AND METHOD FOR MANUFACTURING SUCH A GAS TREATMENT DEVICE |
US6604570B1 (en) | 2002-05-10 | 2003-08-12 | Fiber Tech Co., Ltd. | Apparatus and method for manufacturing metal filaments |
CN101342594B (en) * | 2007-07-12 | 2011-04-06 | 北京中科三环高技术股份有限公司 | Manufacturing apparatus for alloy slice |
CN103639377B (en) * | 2013-12-18 | 2016-05-04 | 青岛云路先进材料技术有限公司 | The manufacturing installation of band and method |
KR102175881B1 (en) * | 2019-01-15 | 2020-11-06 | 공주대학교 산학협력단 | Improved apparatus for producing alloy strips |
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GB191307140A (en) * | 1913-03-25 | 1913-09-25 | Edward Halford Strange | Improvements in and Apparatus for the Manufacture of Fine Threads, or Hairs, of Lead, or other Metal, or Alloy. |
JPS5823551A (en) * | 1981-07-31 | 1983-02-12 | Nippon Steel Corp | Multislit nozzle device for casting of amorphous metal |
JPH0292439A (en) * | 1988-09-28 | 1990-04-03 | Nippon Steel Corp | Method for directly casting wire rod |
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JPS59157322A (en) * | 1983-02-18 | 1984-09-06 | Nippon Steel Corp | Metallic short fiber having v-shaped bent part and its manufacture |
JPS6163346A (en) * | 1984-09-06 | 1986-04-01 | Nippon Steel Corp | Production of thin amorphous metallic strip having large thickness |
JPS6356338A (en) * | 1986-08-26 | 1988-03-10 | Tohoku Metal Ind Ltd | Apparatus for producing ultraquickly cooled alloy |
US4842041A (en) * | 1987-06-11 | 1989-06-27 | Nippon Steel Corporation | Metal strip manufacturing method and nozzle therefor |
-
1993
- 1993-04-28 FR FR9305042A patent/FR2704464B1/en not_active Expired - Fee Related
-
1994
- 1994-04-19 DE DE69412333T patent/DE69412333T2/en not_active Expired - Fee Related
- 1994-04-19 EP EP94400850A patent/EP0622138B1/en not_active Expired - Lifetime
- 1994-04-28 JP JP6092008A patent/JPH0747449A/en active Pending
-
1996
- 1996-03-25 US US08/627,753 patent/US5642771A/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191307140A (en) * | 1913-03-25 | 1913-09-25 | Edward Halford Strange | Improvements in and Apparatus for the Manufacture of Fine Threads, or Hairs, of Lead, or other Metal, or Alloy. |
JPS5823551A (en) * | 1981-07-31 | 1983-02-12 | Nippon Steel Corp | Multislit nozzle device for casting of amorphous metal |
JPH0292439A (en) * | 1988-09-28 | 1990-04-03 | Nippon Steel Corp | Method for directly casting wire rod |
Non-Patent Citations (2)
Title |
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PATENT ABSTRACTS OF JAPAN vol. 14, no. 291 (M - 989)<4234> 22 June 1990 (1990-06-22) * |
PATENT ABSTRACTS OF JAPAN vol. 7, no. 102 (M - 211)<1247> 30 April 1983 (1983-04-30) * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107755653A (en) * | 2017-10-17 | 2018-03-06 | 江苏粤阜合金材料有限公司 | Integrated aluminium strip pressure rolling trimming production line |
CN107755653B (en) * | 2017-10-17 | 2019-05-17 | 江苏粤阜合金材料有限公司 | Integrated aluminium strip pressure rolling trimming production line |
Also Published As
Publication number | Publication date |
---|---|
DE69412333T2 (en) | 1998-12-17 |
EP0622138B1 (en) | 1998-08-12 |
FR2704464B1 (en) | 1995-08-11 |
FR2704464A1 (en) | 1994-11-04 |
JPH0747449A (en) | 1995-02-21 |
US5642771A (en) | 1997-07-01 |
DE69412333D1 (en) | 1998-09-17 |
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