EP0178281A2 - Cooling apparatus for moving metallic products - Google Patents

Cooling apparatus for moving metallic products Download PDF

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Publication number
EP0178281A2
EP0178281A2 EP85870133A EP85870133A EP0178281A2 EP 0178281 A2 EP0178281 A2 EP 0178281A2 EP 85870133 A EP85870133 A EP 85870133A EP 85870133 A EP85870133 A EP 85870133A EP 0178281 A2 EP0178281 A2 EP 0178281A2
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EP
European Patent Office
Prior art keywords
product
boxes
aqueous liquid
wall
spacers
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
Application number
EP85870133A
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German (de)
French (fr)
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EP0178281A3 (en
EP0178281B1 (en
Inventor
Stéphan Wilmotte
Jean-François Noville
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Centre de Recherches Metallurgiques CRM ASBL
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Centre de Recherches Metallurgiques CRM ASBL
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Publication date
Application filed by Centre de Recherches Metallurgiques CRM ASBL filed Critical Centre de Recherches Metallurgiques CRM ASBL
Priority to AT85870133T priority Critical patent/ATE60260T1/en
Publication of EP0178281A2 publication Critical patent/EP0178281A2/en
Publication of EP0178281A3 publication Critical patent/EP0178281A3/en
Application granted granted Critical
Publication of EP0178281B1 publication Critical patent/EP0178281B1/en
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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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates

Definitions

  • the present invention relates to a device for cooling a moving metal product.
  • any metallic product in scrolling movement, having at least one flat surface.
  • rolled products such as sheets, in particular heavy and medium sheets, thin strips, profiles as well as continuous casting products, such as slabs and billets.
  • This known device however has certain drawbacks that are all the more marked the greater the width of the product to be cooled.
  • the present invention relates to a device for eliminating these drawbacks.
  • the device which is the subject of the present invention, for cooling, by means of an aqueous liquid, a metal product having at least one flat surface, the said metal product moving along a predetermined path, is essentially characterized in that '' it has a wall disposed opposite said flat surface of the product to be cooled and in a manner substantially parallel to it, so as to form between said flat surface and said wall, a space of substantially constant thickness, in that said wall is pierced with at least one orifice opening into said space and ensuring the passage of the above-mentioned aqueous liquid through said wall, in that said orifice is connected to a source of said aqueous liquid and in that it comprises means for adjusting the flow rate of the aqueous liquid and the distance between said wall and the flat surface of the product to be cooled.
  • said orifices are distributed in staggered rows, at least in the part of the wall which faces the flat surface of the product to be cooled.
  • the orifices are advantageously lined with rings, for example brass or stainless steel, the internal diameter of which has the desired value.
  • the said wall pierced with orifices constitutes a face, called the front face, of a box for distributing the aqueous liquid on the flat surface of the product to be cooled.
  • the holes drilled in the front face of said box are then advantageously provided with tubular end pieces extending inside the box. Still according to the invention, the length of these tubular tips is preferably not less than five times their internal diameter.
  • tubular tips are preferably made of a material resistant to corrosion by the aqueous liquid, preferably brass or stainless steel.
  • tubular ends make it possible to prevent the orifices from being blocked by materials possibly depositing at the bottom of the box when it is a box whose water escapes through the bottom wall, and to improve the homogeneity of the distribution of the aqueous liquid to the said orifices.
  • the present invention also relates to an installation for cooling a metal product using the device which has just been described.
  • an installation for cooling, by means of an aqueous liquid, a moving metal product having at least one flat surface comprises several devices conforming to those which have been described above, arranged opposite at least a surface, but preferably opposite all the flat surfaces of said product.
  • the walls pierced with orifices belonging to the said devices located opposite the same flat surface of the said product to be arranged in the same plane and for the said walls to follow one another in the direction of travel of the product.
  • FIG. 1 shows a sheet 1 which, on leaving the rolling mill 2, moves on a roller conveyor 3 in the direction of the arrow 4.
  • This sheet passes through a cooling installation according to the invention, comprising on the one hand lower boxes 5 arranged between the rollers 3 of the conveyor, and on the other hand upper boxes 6 disposed substantially above the lower boxes 5.
  • These lower and upper boxes are supplied with aqueous liquid respectively through the inlet pipes 7 and 8.
  • spacers 9 Between the upper boxes 6 are placed spacers 9, the lower face of which is situated in the plane containing the walls pierced with orifices of the so-called upper boxes.
  • spacers ensure on the one hand, the continuity of the surface facing the product and therefore the consistency of the thickness of the space 1 0 supplied with aqueous liquid and on the other hand, the maintenance of the spacing chosen between neighboring caissons. They also make it possible to eliminate any risk of catching of the sheet by the upper boxes.
  • the aqueous liquid delivered by lines 7 and 8 is discharged to a collector (not shown), after having cooled the sheet 1 in space 10.
  • FIG. 2 shows in particular a sheet 1 entering the cooling installation.
  • the sheet 1 moves on the rollers 3, between which the lower boxes are disposed 5. These are positioned so that their front face is located at a distance between 10 mm and 100 mm below the contact plane between sheet metal and rollers. These distances make it possible to avoid any risk of catching of the sheet by the lower boxes, while ensuring satisfactory cooling efficiency.
  • the boxes 5 are individually supplied with aqueous liquid from the pipe 7; each individual connection 11 is provided with a valve 12 making it possible to isolate the corresponding lower box.
  • the upper face of the boxes 5 is pierced with orifices 13, the diameter of which is between 0.5 mm and 10 mm, and pre ference between 1 and 5 mm.
  • the number of these orifices is at least 100 per square meter, for the orifices with the largest diameter; it increases when the diameter decreases, so as to maintain the passage section, and consequently the desired flow rate of aqueous liquid.
  • the front face of the lower casings is, according to the invention, provided with teeth 23 projecting substantially horizontally, preferably upstream, to guide the sheet while allowing the flow of a portion aqueous liquid.
  • each upper box 6 Opposite the lower boxes 5 are arranged upper boxes 6 whose front face, that is to say the face facing the sheet 1, is also pierced with orifices similar to the orifices 13. It is not imperative, for the present invention, that each upper box 6 is located strictly opposite a lower box 5; the spacing between the upper boxes can be different from the spacing between the lower boxes, without departing from the scope of the present invention.
  • the upper boxes 6 are supplied with aqueous liquid from a pipe 8; each connection 14 is subdivided into two individual conduits 15 and 16, each supplying a box and provided with valves 17 making it possible to isolate the corresponding upper box.
  • the intervals between the upper boxes 6 are occupied by spacers 9.
  • spacers 9 are appropriately secured to the boxes 6, and their height is greater than that of these boxes 6
  • the rear face of the spacers 9 is projecting from the boxes 6.
  • the spacers 9 are rigidly fixed, preferably by welding, to the side members 18 which are in turn supported by transverse gussets 19.
  • the ends of these gussets 19 are supported by jacks 20 on bases 21 secured to the foundation of the installation.
  • jacks 20 make it possible to vertically move the rigid assembly formed by the gussets 19, the side members 18, the spacers 9 and the upper boxes 6, so as to vary, as necessary, the distance between the front face of the boxes 6 and the upper surface of the sheet 1.
  • the jacks 20 are driven, by means of a distribution known per se, by means of a motor 22 mounted, according to the invention, behind the spacers 9 and preferably in the longitudinal median plane of the set of spacers - upper boxes. The motor 22 is thus protected against the vapors which inevitably emerge from the cooling space.
  • the spacers 9 and the side members 18 are hollow and closed at their ends, and they communicate with each other at their crossing points; they thus form a circuit, traversed by a cooling liquid, preferably water, so as to avoid any deformation by heating in the event of blockage of a hot product inside the installation.
  • a cooling liquid preferably water
  • This coolant advantageously comes from the cooling circuit of the rolls of the rolling mill located upstream, so that its supply is independent of the supply circuit of the boxes and is therefore not disturbed in the event of voluntary reduction or interruption. accidental - from the supply of the boxes 5, 6.
  • a partition 24 preferably vertical, which prevents any untimely lateral flow of the aqueous coolant.
  • This wall its of course has inlet and outlet openings for the sheet in the installation. Still according to the invention, these openings are provided with means to prevent the aqueous liquid from flowing through these openings.
  • These means are advantageously constituted by devices for spraying aqueous liquid in the transverse direction which discharge the aqueous liquid into the space between the partitions and, from there, towards the collector.
  • the entry opening formed in said vertical partition is equipped, according to the invention, with means for guiding the sheet coming from the rolling mill and having to enter the installation.
  • These means are advantageously constituted by a guide or deflector, which can itself be made of sheet metal, forming a funnel in front of said inlet opening.
  • FIG. 3 illustrates the circuits for supplying aqueous liquid to the lower and upper boxes, as well as the device with jacks ensuring the height positioning of the upper boxes.
  • connection 11 connected to one end of the box is, according to the invention, equipped with a bypass 25 which transfers half of the flow of aqueous liquid to the other end of the said box.
  • Each conduit 15 is connected to one end of a box 6 and it is equipped with a bypass 26 which transfers half of the flow of aqueous liquid to the other end of said box.
  • connection 14 comprises, in accordance with the invention, means making it possible to ensure, without loss of tightness, the mobility of the assembly comprising the upper boxes relative to the supply line 8.
  • connection consists in fact of a first part 14 and a second part 14 'whose diameter is slightly less than that of the first part 14.
  • the end of the part 14 ′ is engaged and can slide in the part 14, in response to variations in the height position of the upper boxes 6, and the seal between the two parts is ensured by an elastic membrane controlled by pressure of a gas.
  • the orifices 13 of the upper boxes 6 are advantageously provided with tubular end pieces 28 extending inside the boxes.
  • tubular ends facilitate the protection of the boxes 6 against deformation by heating in the relatively frequent case where the installation is crossed by .a sheet which must not be cooled by this means.
  • the upper boxes 6 are in fact provided with a discharge orifice 29 situated at a level lower than that of the head of the tubular end pieces 28. If necessary, it is thus possible to establish and maintain a slight flow of aqueous liquid ensuring the cooling of the boxes 6 without this liquid flowing undesirably on the sheet.
  • the protection of the lower boxes 5 is ensured by maintaining a flow rate of aqueous liquid sufficient for it to flow through the orifices 13, but insufficient for it to reach the underside of the sheet not to be cooled. .
  • aqueous liquid delivered by the orifices 13 of the upper and lower boxes is collected by the collector 30 then, after filtering and cooling by devices not shown, it is returned to the pipes 7 and 8.
  • a make-up of aqueous liquid can, on this occasion, be added to compensate for losses, in particular by spraying.
  • FIG. 3 also shows the mechanization system of the mobile upper assembly, consisting of the motor 22 and the jacks 20 to which the movement is transmitted by a known type of distribution.
  • the stroke of these cylinders is such that the thickness of the space 10 can vary from 5 mm to 300 mm, and preferably between 30 mm and 300 mm in the case of sheets, in order to avoid any risk. attachment while maintaining a satisfactory cooling efficiency.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Heat Treatment Of Articles (AREA)
  • Metal Rolling (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The device comprises a wall arranged opposite a plane surface of the product to be cooled and substantially parallel thereto, so as to form between this plane surface and the wall a space of substantially constant thickness; this wall is pierced with at least one orifice which opens into the said space and ensures the passage of an aqueous liquid. The device also comprises means for adjusting the flowrate of the aqueous liquid and the distance between the wall and the plane surface of the product to be cooled. The invention also relates to an installation comprising a plurality of these devices, particularly in the form of boxes having a perforated wall facing the product to be cooled. <IMAGE>

Description

La présente invention porte sur un dispositif pour refroidir un produit métallique en mouvement.The present invention relates to a device for cooling a moving metal product.

Elle s'applique au refroidissement de tout produit métallique, en mouvement de défilement, présentant au moins une surface plane. C'est le cas par exemple des produits laminés, tels que les tôles, en particulier les tôles fortes et moyennes, les bandes minces, les profilés ainsi que des produits de coulée continue, tels que les brames et les billettes.It applies to the cooling of any metallic product, in scrolling movement, having at least one flat surface. This is the case, for example, of rolled products, such as sheets, in particular heavy and medium sheets, thin strips, profiles as well as continuous casting products, such as slabs and billets.

Le problème du refroidissement de ces produits fait, depuis longtemps, l'objet d'une attention particulière, car il conditionne au premier chef soit la régularité de la structure du produit, soit l'évolution régulière de cette structure au cours du temps.The problem of cooling these products has been the subject of special attention for a long time, since it primarily conditions either the regularity of the structure of the product, or the regular evolution of this structure over time.

On connaît actuellement divers dispositifs permettant d'assurer ce refroidissement par projection de jets d'un agent de refroidissement tel que de l'air, de l'eau, de la vapeur d'eau, isolément, en mélange ou sous forme pulvérisée.Various devices are currently known for ensuring this cooling by spraying jets of a cooling agent such as air, water, steam, in isolation, as a mixture or in spray form.

En particulier, le présent demandeur a déjà proposé, dans son brevet belge N° 851.381, un dispositif destiné à assurer le refroidissement d'un produit de ce type, par projection d' eau pulvérisée par de l'air, sous la forme de jets dirigés vers la surface du produit.In particular, the present applicant has already proposed, in its Belgian patent No. 851.381, a device intended to ensure the cooling of a product of this type, by spraying water sprayed with air, in the form of jets directed towards the surface of the product.

Ce dispositif connu présente cependant certains inconvénients d'autant plus marqués que la largeur du produit à refroidir est importante.This known device however has certain drawbacks that are all the more marked the greater the width of the product to be cooled.

Il présente en effet une structure relativement compliquée, comportant des caissons intérieurs l'un à l'autre, dont la réalisation et l'entretien s'avèrent délicats, en particulier pour des largeurs de produits élevées. En outre, il impose une consommation très élevée d'air comprimé de pulvérisation. Enfin, le maintien d'une répartition homogène des débits d' air et d'eau impose le recours à des dispositifs particuliers qui grèvent le coût de l'installation.It has in fact a relatively complicated structure, comprising inner boxes to one another, the production and maintenance of which prove to be delicate, in particular for large product widths. In addition, it requires a very high consumption of compressed spraying air. Finally, maintaining a homogeneous distribution of air and water flows requires the use of special devices which increase the cost of the installation.

La présente invention a pour objet un dispositif permettant d'éliminer ces inconvénients.The present invention relates to a device for eliminating these drawbacks.

Le dispositif, qui fait l'objet de la présente invention, pour refroidir, au moyen d'un liquide aqueux, un produit métallique présentant au moins une surface plane, le dit produit métallique défilant selon une trajectoire prédéterminée, est essentiellement caractérisé en ce qu'il comporte une paroi disposée en face de la dite surface plane du produit à refroidir et de façon sensiblement parallèle à celle-ci, de façon à former entre la dite surface plane et la dite paroi, un espace d'épaisseur sensiblement constante, en ce que la dite paroi est percée d'au moins un orifice débouchant dans le dit espace et assurant le passage du liquide aqueux précité à travers la dite paroi, en ce que le dit orifice est relié à une source du dit liquide aqueux et en ce qu'il comporte des moyens de réglage du débit du liquide aqueux et de la distance entre la dite paroi et la surface plane du produit à refroidir.The device, which is the subject of the present invention, for cooling, by means of an aqueous liquid, a metal product having at least one flat surface, the said metal product moving along a predetermined path, is essentially characterized in that '' it has a wall disposed opposite said flat surface of the product to be cooled and in a manner substantially parallel to it, so as to form between said flat surface and said wall, a space of substantially constant thickness, in that said wall is pierced with at least one orifice opening into said space and ensuring the passage of the above-mentioned aqueous liquid through said wall, in that said orifice is connected to a source of said aqueous liquid and in that it comprises means for adjusting the flow rate of the aqueous liquid and the distance between said wall and the flat surface of the product to be cooled.

Selon un mode de réalisation particulier, les dits orifices sont répartis en quinconce, au moins dans la partie de la paroi qui fait face à la surface plane du produit à refroidir.According to a particular embodiment, said orifices are distributed in staggered rows, at least in the part of the wall which faces the flat surface of the product to be cooled.

Il s'est par ailleurs avéré intéressant, toujours selon l'invention, de garnir les dits orifices d'un matériau résistant à la corrosion par le dit liquide aqueux. A cet égard, les orifices sont avantageusement garnis de bagues, par exemple en laiton ou en acier inoxydable, dont le diamètre intérieur présente la valeur désirée.It has also proved advantageous, still according to the invention, to fill said orifices with a material resistant to corrosion by said aqueous liquid. In this regard, the orifices are advantageously lined with rings, for example brass or stainless steel, the internal diameter of which has the desired value.

Selon un mode de réalisation particulièrement intéressant du dispositif de l'invention, la dite paroi percée d'orifices constitue une face,dite face avant, d'un caisson de distribution du liquide aqueux sur la surface plane du produit à refroidir.According to a particularly advantageous embodiment of the device of the invention, the said wall pierced with orifices constitutes a face, called the front face, of a box for distributing the aqueous liquid on the flat surface of the product to be cooled.

Les orifices percés dans la face avant du dit caisson sont alors avantageusement pourvus d'embouts tubulaires se prolongeant à l'intérieur du caisson. Toujours selon l'invention, la longueur de ces embouts tubulaires n'est de préférence pas inférieure à cinq fois leur diamètre intérieur.The holes drilled in the front face of said box are then advantageously provided with tubular end pieces extending inside the box. Still according to the invention, the length of these tubular tips is preferably not less than five times their internal diameter.

Par ailleurs, ces embouts tubulaires sont, de façon préférentielle, réalisés en un matériau résistant à la corrosion par le liquide aqueux, de préférence en laiton ou en acier inoxydable.Furthermore, these tubular tips are preferably made of a material resistant to corrosion by the aqueous liquid, preferably brass or stainless steel.

La présence de ces embouts tubulaires permet d'éviter le bouchage des orifices par des matières se déposant éventuellement au fond du caisson quand il s'agit d'un caisson dont l'eau s' échappe par la paroi inférieure, et d'améliorer l'homogénéité de la répartition du liquide aqueux aux dits orifices.The presence of these tubular ends makes it possible to prevent the orifices from being blocked by materials possibly depositing at the bottom of the box when it is a box whose water escapes through the bottom wall, and to improve the homogeneity of the distribution of the aqueous liquid to the said orifices.

L'emploi d'un matériau résistant à la corrosion pour réaliser les bagues et les embouts tubulaires précités évite la dégradation des orifices et leur assure une section invariable.The use of a corrosion-resistant material for making the aforementioned rings and tubular end pieces avoids the degradation of the orifices and ensures them an invariable section.

La présente invention porte également sur une installation pour refroidir un produit métallique faisant application du dispositif qui vient d'être décrit.The present invention also relates to an installation for cooling a metal product using the device which has just been described.

Selon l'invention, une installation pour refroidir, au moyen d'un liquide aqueux, un produit métallique en mouvement présentant au moins une surface plane, comporte plusieurs dispositifs conformes à ceux qui ont été décrits plus haut, disposés en face d'au moins une surface, mais de préférence en face de toutes les surfaces planes du dit produit. Dans cette installation, il est avantageux que les parois percées d'orifices appartenant aux dits dispositifs situés en face d'une même surface plane du dit produit, soient disposées dans un même plan et que les dites parois se succèdent dans le sens de défilement du produit.According to the invention, an installation for cooling, by means of an aqueous liquid, a moving metal product having at least one flat surface, comprises several devices conforming to those which have been described above, arranged opposite at least a surface, but preferably opposite all the flat surfaces of said product. In this installation, it is advantageous for the walls pierced with orifices belonging to the said devices located opposite the same flat surface of the said product to be arranged in the same plane and for the said walls to follow one another in the direction of travel of the product.

Selon un mode de réalisation particulièrement intéressant, l' installation qui fait l'objet de la présente invention, pour le refroidissement d'un produit métallique présentant une surface inférieure et une surface supérieure planes, sensiblement horizontales, notamment une tôle, qui se déplace sur un convoyeur à rouleaux, est essentiellement caractérisée en ce qu' elle comporte :

  • A. un ensemble dit inférieur, fixe, comprenant :
    • (a) des caissons dits inférieurs, disposés sous le produit entre les rouleaux du dit convoyeur, de telle façon que leur face avant soit située en retrait par rapport au plan de contact entre le produit et les rouleaux du convoyeur;
    • (b) des moyens d'alimentation de ces caissons inférieurs en liquide aqueux de refroidissement;
  • B. un ensemble dit supérieur, mobile en direction verticale, comprenant :
    • (c) des caissons dits supérieurs, disposés au-dessus du produit, sensiblement en face des dits caissons inférieurs;
    • (d) entre les dits caissons supérieurs, des entretoises présentant une section rectangulaire dont la largeur est égale à la distance séparant deux caissons voisins et dont la hauteur est supérieure à la hauteur de ces caissons supérieurs, ces entretoises étant solidarisées avec les caissons adjacents, de telle façon que leur face inférieure soit située au même niveau que la face avant des dits caissons supérieurs;
    • (e) des longerons auxquels est suspendu l'ensemble constitué par les entretoises et les caissons supérieurs précités, la dite suspension étant de préférence réalisée par soudage des entretoises aux longerons;
    • (f) des goussets transversaux supportant les dits longerons;
    • (g) des moyens d'alimentation des dits caissons supérieurs ) en liquide aqueux de refroidissement;
  • C. des moyens de réglage de la position verticale de l'ensemble supérieur mobile (B) par rapport à l'ensemble inférieur fixe (A), comprenant :
    • (h) un moteur solidaire de l'ensemble mobile (B), monté au-5 dessus des dites entretoises;
    • (i) des vérins disposés aux extrémités des goussets transversaux précités et prenant appui sur la fondation de l'installation;
    • (j) un mécanisme de distribution, monté sur le dit ensemble mobile (B) et assurant la commande des dits vérins par le moteur précité;
  • D. des moyens d'évacuation du liquide aqueux débité par les dits caissons inférieurs et supérieurs.
According to a particularly advantageous embodiment, the installation which is the subject of the present invention, for cooling a metallic product having a bottom surface and a flat top surface, substantially horizontal, in particular a sheet, which moves on a roller conveyor, is essentially characterized in that it comprises:
  • A. a so-called lower, fixed assembly, comprising:
    • (a) so-called lower boxes, placed under the product between the rollers of said conveyor, so that their front face is set back relative to the contact plane between the product and the rollers of the conveyor;
    • (b) means for supplying these lower chambers with aqueous cooling liquid;
  • B. a so-called upper assembly, movable in the vertical direction, comprising:
    • (c) so-called upper boxes, placed above the product, substantially opposite said bottom boxes;
    • (d) between the said upper caissons, spacers having a rectangular section whose width is equal to the distance separating two neighboring caissons and whose height is greater than the height of these upper caissons, these spacers being secured to the adjacent caissons, so that their lower face is located at the same level as the front face of said upper boxes;
    • (e) longitudinal members to which the assembly consisting of the above-mentioned spacers and upper boxes is suspended, said suspension preferably being produced by welding the spacers to the longitudinal members;
    • (f) transverse gussets supporting said beams;
    • (g) means for supplying said upper boxes with aqueous cooling liquid;
  • C. means for adjusting the vertical position of the movable upper assembly (B) relative to the fixed lower assembly (A), comprising:
    • (h) a motor secured to the mobile assembly (B), mounted above said spacers;
    • (i) cylinders arranged at the ends of the aforementioned transverse gussets and bearing on the foundation of the installation;
    • (j) a distribution mechanism, mounted on said mobile assembly ( B ) and ensuring the control of said cylinders by the aforementioned motor;
  • D. means for discharging the aqueous liquid supplied by said upper and lower boxes.

A titre de réalisation particulière d'une telle installation, on va décrire ci-dessous une installation destinée à assurer le refroidissement d'une tôle, par exemple à la sortie d'un laminoir à chaud. Cette description ne présente cependant aucun caractère limitatif et l'installation décrite ici pourrait, sans sortir du cadre de la présente invention, subir des modifications appropriées pour l'adapter au refroidissement d'autres produits, par exemple des profilés, dans la mesure où ceux-ci comportent au moins une surface plane.As a particular embodiment of such an installation, an installation intended to ensure the cooling of a sheet will be described below, for example at the outlet of a hot rolling mill. This description does not, however, have any limiting character and the installation described here could, without departing from the scope of the present invention, undergo suitable modifications to adapt it to the cooling of other products, for example profiles, insofar as those -ci have at least one flat surface.

Pour la clarté de la description, il sera fait référence aux figures annexées, dans lesquelles :

  • la figure 1 représente schématiquement une vue latérale d'une installation pour refroidir des tôles à la sortie du laminoir;
  • la figure 2 montre une vue en perspective de l'ensemble de l' installation; et
  • la figure 3 présente une coupe transversale de l'installation montrant les circuits d'arrivée du liquide aqueux ainsi que les moyens de réglage de la distance en tre la paroi percée d'orifices et la surface de la tôle.
For clarity of description, reference will be made to the appended figures, in which:
  • Figure 1 schematically shows a side view of an installation for cooling sheets at the outlet of the rolling mill;
  • Figure 2 shows a perspective view of the entire installation; and
  • FIG. 3 presents a cross section of the installation showing the circuits for the arrival of the aqueous liquid as well as the means for adjusting the distance between the wall pierced with orifices and the surface of the sheet.

La figure 1 montre une tôle 1 qui, à sa sortie du laminoir 2, se déplace sur un convoyeur à rouleaux 3 dans le sens de la flèche 4. Cette tôle traverse une installation de refroidissement conforme à l'invention, comportant d'une part des caissons inférieurs 5 disposés entre les rouleaux 3 du convoyeur, et d'autre part des caissons supérieurs 6 disposés sensiblement au-dessus des caissons inférieurs 5. Ces caissons inférieurs et supérieurs sont alimentés en liquide aqueux respectivement par les conduites d'arrivée 7 et 8. Entre les caissons supérieurs 6 sont disposées des entretoises 9 dont la face inférieure est située dans le plan contenant les parois percées d'orifices des dits caissons supérieurs. Ces entretoises assurent d'une part, la continuité de la surface faisant face au produit et par conséquent la constance de l'épaisseur de l' espace 10 alimenté en liquide aqueux et d'autre part, le maintien de l'écartement choisi entre des caissons voisins. Elles permettent également d'éliminer tout risque d'accrochage de la tôle par les caissons supérieurs. Le liquide aqueux débité par les conduites 7 et 8 est évacué vers un collecteur non représenté, après avoir assuré le refroidissement de la tôle 1 dans l'espace 10.FIG. 1 shows a sheet 1 which, on leaving the rolling mill 2, moves on a roller conveyor 3 in the direction of the arrow 4. This sheet passes through a cooling installation according to the invention, comprising on the one hand lower boxes 5 arranged between the rollers 3 of the conveyor, and on the other hand upper boxes 6 disposed substantially above the lower boxes 5. These lower and upper boxes are supplied with aqueous liquid respectively through the inlet pipes 7 and 8. Between the upper boxes 6 are placed spacers 9, the lower face of which is situated in the plane containing the walls pierced with orifices of the so-called upper boxes. These spacers ensure on the one hand, the continuity of the surface facing the product and therefore the consistency of the thickness of the space 1 0 supplied with aqueous liquid and on the other hand, the maintenance of the spacing chosen between neighboring caissons. They also make it possible to eliminate any risk of catching of the sheet by the upper boxes. The aqueous liquid delivered by lines 7 and 8 is discharged to a collector (not shown), after having cooled the sheet 1 in space 10.

Cette installation est illustrée de façon plus précise à la figure 2, qui montre notamment une tôle 1 pénétrant dans l'installation de refroidissement. La tôle 1 se déplace sur les rouleaux 3, entre lesquels sont disposés les caissons inférieurs 5. Ceux-ci sont positionnés de façon telle que leur face avant soit située à une distance comprise entre 10 mm et 100 mm en dessous du plan de contact entre la tôle et les rouleaux. Ces distances permettent d'éviter tout risque d'accrochage de la tôle par les caissons inférieurs, tout en assurant une efficacité de refroidissement satisfaisante. Les caissons 5 sont alimentés individuellement en liquide aqueux à partir de la conduite 7; chaque branchement individuel 11 est pourvu d'une vanne 12 permettant d'isoler le caisson inférieur correspondant. La face supérieure des caissons 5 est percée d'orifices 13, dont le diamètre est compris entre 0,5 mm et 10 mm, et de préférence entre 1 et 5 mm. Le nombre de ces orifices s'élève au moins à 100 par mètre carré, pour les orifices de diamètre le plus élevé; il augmente lorsque le diamètre diminue, de façon à maintenir la section de passage, et par conséquent le débit désiré de liquide aqueux. La face avant des caissons infé- _ rieurs est, encore selon l'invention, pourvue de dents 23 faisant saillie sensiblement horizontale, de préférence vers l'amont, pour assurer le guidage de la tôle tout en permettant l'écoulement d'une partie du liquide aqueux.This installation is illustrated more precisely in FIG. 2, which shows in particular a sheet 1 entering the cooling installation. The sheet 1 moves on the rollers 3, between which the lower boxes are disposed 5. These are positioned so that their front face is located at a distance between 10 mm and 100 mm below the contact plane between sheet metal and rollers. These distances make it possible to avoid any risk of catching of the sheet by the lower boxes, while ensuring satisfactory cooling efficiency. The boxes 5 are individually supplied with aqueous liquid from the pipe 7; each individual connection 11 is provided with a valve 12 making it possible to isolate the corresponding lower box. The upper face of the boxes 5 is pierced with orifices 13, the diameter of which is between 0.5 mm and 10 mm, and pre ference between 1 and 5 mm. The number of these orifices is at least 100 per square meter, for the orifices with the largest diameter; it increases when the diameter decreases, so as to maintain the passage section, and consequently the desired flow rate of aqueous liquid. The front face of the lower casings is, according to the invention, provided with teeth 23 projecting substantially horizontally, preferably upstream, to guide the sheet while allowing the flow of a portion aqueous liquid.

En regard des caissons inférieurs 5 sont disposées des caissons supérieurs 6 dont la face avant, c'est-à-dire la face tournée vers la tôle 1, est également percée d'orifices analogues aux orifices 13. Il n'est pas impératif, pour la présente invention, que chaque caisson supérieur 6 soit situé strictement en face d'un caisson inférieur 5; l'écartement entre les caissons supérieurs peut être différent de l'écartement entre les caissons inférieurs, sans sortir du cadre de la présente invention. Les caissons supérieurs 6 sont alimentés en liquide aqueux à partir d'une conduite 8; chaque branchement 14 se subdivise en deux conduits individuels 15 et 16, alimentant chacun un caisson et pourvus de vannes 17 permettant d'isoler le caisson supérieur correspondant.Opposite the lower boxes 5 are arranged upper boxes 6 whose front face, that is to say the face facing the sheet 1, is also pierced with orifices similar to the orifices 13. It is not imperative, for the present invention, that each upper box 6 is located strictly opposite a lower box 5; the spacing between the upper boxes can be different from the spacing between the lower boxes, without departing from the scope of the present invention. The upper boxes 6 are supplied with aqueous liquid from a pipe 8; each connection 14 is subdivided into two individual conduits 15 and 16, each supplying a box and provided with valves 17 making it possible to isolate the corresponding upper box.

Le circuit d'alimentation des caissons, tant inférieurs que supérieurs, sera exposé de façon plus détaillée dans la figure 3.The supply circuit of the boxes, both lower and upper, will be explained in more detail in FIG. 3.

Comme on l'a indiqué dans la figure 1, les intervalles entre les caissons supérieurs 6 sont occupés par des entretoises 9. Ces entretoises 9 sont solidarisées de façon appropriée avec les caissons 6, et leur hauteur est plus grande que celle de ces caissons 6. Comme les faces avant des entretoises 9 et des caissons 6 doivent être situées dans un même plan, pour les raisons indiquées plus haut, la face arrière des entretoises 9 se trouve en saillie par rapport aux caissons 6. Par cette face arrière, les entretoises 9 sont fixées de façon rigide, de préférence par soudage, à des longerons 18 qui sont à leur tour supportés par des goussets transversaux 19. Les extrémités de ces goussets 19 prennent appui par des vérins 20 sur des socles 21 solidaires de la fondation de l'installation. Ces vérins 20 permettent de déplacer verticalement l'ensemble rigide formé par les goussets 19, les longerons 18, les entretoises 9 et les caissons supérieurs 6, de façon à faire varier, selon les besoins, la distance entre la face avant des caissons 6 et la surface supérieure de la tôle 1. Les vérins 20 sont entraînés, par l'intermédiaire d'une distribution connue en soi, au moyen d'un moteur 22 monté, selon l'invention, à l' arrière des entretoises 9 et de préférence dans le plan médian longitudinal de l'ensemble entretoises - caissons supérieurs. Le moteur 22 est ainsi protégé contre les vapeurs qui se dégagent inévitablement de l'espace de refroidissement.As indicated in Figure 1, the intervals between the upper boxes 6 are occupied by spacers 9. These spacers 9 are appropriately secured to the boxes 6, and their height is greater than that of these boxes 6 As the front faces of the spacers 9 and the boxes 6 must be located in the same plane, for the reasons indicated above, the rear face of the spacers 9 is projecting from the boxes 6. By this rear face, the spacers 9 are rigidly fixed, preferably by welding, to the side members 18 which are in turn supported by transverse gussets 19. The ends of these gussets 19 are supported by jacks 20 on bases 21 secured to the foundation of the installation. These jacks 20 make it possible to vertically move the rigid assembly formed by the gussets 19, the side members 18, the spacers 9 and the upper boxes 6, so as to vary, as necessary, the distance between the front face of the boxes 6 and the upper surface of the sheet 1. The jacks 20 are driven, by means of a distribution known per se, by means of a motor 22 mounted, according to the invention, behind the spacers 9 and preferably in the longitudinal median plane of the set of spacers - upper boxes. The motor 22 is thus protected against the vapors which inevitably emerge from the cooling space.

Conformément à l'invention, les entretoises 9 et les longerons 18 sont creux et fermés à leurs extrémités, et ils communiquent entr'eux à leurs points de croisement; ils forment ainsi un circuit, parcouru par un liquide de refroidissement, de préférence de l'eau, de façon à éviter toute déformation par échauffement en cas de blocage d'un produit chaud à l'intérieur de l'installation. Ce liquide de refroidissement provient avantageusement du circuit de refroidissement des cylindres du laminoir situé en amont, de façon que son alimentation soit indépendante du circuit d'alimentation des caissons et ne soit dès lors pas perturbée en cas de diminution ou d'interruption- volontaire ou accidentelle - de l'alimentation des caissons 5, 6.According to the invention, the spacers 9 and the side members 18 are hollow and closed at their ends, and they communicate with each other at their crossing points; they thus form a circuit, traversed by a cooling liquid, preferably water, so as to avoid any deformation by heating in the event of blockage of a hot product inside the installation. This coolant advantageously comes from the cooling circuit of the rolls of the rolling mill located upstream, so that its supply is independent of the supply circuit of the boxes and is therefore not disturbed in the event of voluntary reduction or interruption. accidental - from the supply of the boxes 5, 6.

L'ensemble de l'installation est entouré d'une cloison 24, de préférence verticale, qui empêche tout écoulement latéral intempestif du liquide aqueux de refroidissement. Cette cloison présente bien entendu des ouvertures d'entrée et de sortie de la tôle dans l'installation. Toujours selon l'invention, ces ouvertures sont pourvues de moyens pour empêcher le liquide aqueux de s'écouler à travers ces ouvertures. Ces moyens sont avantageusement constitués par des dispositifs de projection de liquide aqueux en direction transversale qui refoulent le liquide aqueux dans l'espace compris entre les cloisons et, de là, vers le collecteur.The entire installation is surrounded by a partition 24, preferably vertical, which prevents any untimely lateral flow of the aqueous coolant. This wall its of course has inlet and outlet openings for the sheet in the installation. Still according to the invention, these openings are provided with means to prevent the aqueous liquid from flowing through these openings. These means are advantageously constituted by devices for spraying aqueous liquid in the transverse direction which discharge the aqueous liquid into the space between the partitions and, from there, towards the collector.

Enfin, l'ouverture d'entrée ménagée dans la dite cloison verticale est équipée, selon l'invention, de moyens pour guider la tôle provenant du laminoir et devant pénétrer dans l'installation. Ces moyens sont avantageusement constitués par un guide ou déflecteur, lui-même pouvant être en tôle, formant entonnoir devant la dite ouverture d'entrée.Finally, the entry opening formed in said vertical partition is equipped, according to the invention, with means for guiding the sheet coming from the rolling mill and having to enter the installation. These means are advantageously constituted by a guide or deflector, which can itself be made of sheet metal, forming a funnel in front of said inlet opening.

La figure 3 illustre les circuits d'alimentation en liquide aqueux des caissons inférieurs et supérieurs, ainsi que le dispositif à vérins assurant le positionnement en hauteur des caissons supérieurs.FIG. 3 illustrates the circuits for supplying aqueous liquid to the lower and upper boxes, as well as the device with jacks ensuring the height positioning of the upper boxes.

Pour assurer une alimentation symétrique et équilibrée du caisson inférieur 5, le branchement 11 raccordé à une extrémité du caisson, est, selon l'invention, équipé d'une dérivation 25 qui reporte la moitié du débit de liquide aqueux à l'autre extrémité du dit caisson.To ensure a symmetrical and balanced supply of the lower box 5, the connection 11 connected to one end of the box, is, according to the invention, equipped with a bypass 25 which transfers half of the flow of aqueous liquid to the other end of the said box.

L'alimentation des caissons supérieurs est réalisée selon le même principe. Chaque conduit 15 est raccordé à une extrémité d'un caisson 6 et il est équipé d'une dérivation 26 qui reporte la moitié du débit de liquide aqueux à l'autre extrémité du dit caisson.The supply of the upper boxes is carried out according to the same principle. Each conduit 15 is connected to one end of a box 6 and it is equipped with a bypass 26 which transfers half of the flow of aqueous liquid to the other end of said box.

Il ne sortirait cependant pas du cadre de la présente invention de prévoir des dérivations supplémentaires reportant une partie correspondante du débit de liquide aqueux en d'autres points des caissons, tant inférieurs que supérieurs.It would not, however, depart from the scope of the present invention to provide additional branches carrying a corresponding part of the flow of aqueous liquid at other points of the casings, both lower and upper.

Il faut encore souligner que le branchement 14 comporte, conformément à l'invention, des moyens permettant d'assurer, sans perte d'étanchéité, la mobilité de l'ensemble comprenant les caissons supérieurs par rapport à la conduite d'alimentation 8.It should also be emphasized that the connection 14 comprises, in accordance with the invention, means making it possible to ensure, without loss of tightness, the mobility of the assembly comprising the upper boxes relative to the supply line 8.

Ces moyens consistent avantageusement en un dispositif 27 dans lequel le branchement est en fait constitué d'une première partie 14 et d'une seconde partie 14' dont le diamètre est légèrement inférieur à celui de la première partie 14. L'extrémité de la partie 14' est engagée et peut coulisser dans la partie 14, en réponse aux variations de la position en hauteur des caissons supérieurs 6, et l'étanchéité entre les deux parties est assurée par une membrane élastique commandée par pression d'un gaz.These means advantageously consist of a device 27 in which the connection consists in fact of a first part 14 and a second part 14 'whose diameter is slightly less than that of the first part 14. The end of the part 14 ′ is engaged and can slide in the part 14, in response to variations in the height position of the upper boxes 6, and the seal between the two parts is ensured by an elastic membrane controlled by pressure of a gas.

Selon une modalité déjà indiquée plus haut, les orifices 13 des caissons supérieurs 6 sont avantageusement pourvus d'embouts tubulaires 28 se prolongeant à l'intérieur des caissons.According to a method already indicated above, the orifices 13 of the upper boxes 6 are advantageously provided with tubular end pieces 28 extending inside the boxes.

Ces embouts tubulaires facilitent la protection des caissons 6 contre la déformation par échauffement dans le cas relativement fréquent où l'installation est traversée par .une tôle qui ne doit pas être refroidie par ce moyen.These tubular ends facilitate the protection of the boxes 6 against deformation by heating in the relatively frequent case where the installation is crossed by .a sheet which must not be cooled by this means.

Selon une particularité supplémentaire de l'invention, les caissons supérieurs 6 sont en effet pourvus d'un orifice d'évacuation 29 situé à un niveau inférieur à celui de la tête des embouts tubulaires 28. En cas de besoin, on peut ainsi établir et maintenir un léger débit de liquide aqueux assurant le refroidissement des caissons 6 sans que ce liquide s'écoule de façon indésirable sur la tôle.According to an additional feature of the invention, the upper boxes 6 are in fact provided with a discharge orifice 29 situated at a level lower than that of the head of the tubular end pieces 28. If necessary, it is thus possible to establish and maintain a slight flow of aqueous liquid ensuring the cooling of the boxes 6 without this liquid flowing undesirably on the sheet.

Dans ce même cas, la protection des caissons inférieurs 5 est assurée en maintenant un débit de liquide aqueux suffisant pour qu'il s'écoule par les orifices 13, mais insuffisant pour qu' il atteigne la face inférieure de la tôle à ne pas refroidir.In the same case, the protection of the lower boxes 5 is ensured by maintaining a flow rate of aqueous liquid sufficient for it to flow through the orifices 13, but insufficient for it to reach the underside of the sheet not to be cooled. .

Dans tous les cas, le liquide aqueux débité par les orifices 13 des caissons supérieurs et inférieurs est recueilli par le collecteur 30 puis, après filtrage et refroidissement par des dispositifs non représentés, il est renvoyé aux conduites 7 et 8. Un appoint de liquide aqueux peut, à cette occasion, être ajouté pour compenser les pertes notamment par vaporisation.In all cases, the aqueous liquid delivered by the orifices 13 of the upper and lower boxes is collected by the collector 30 then, after filtering and cooling by devices not shown, it is returned to the pipes 7 and 8. A make-up of aqueous liquid can, on this occasion, be added to compensate for losses, in particular by spraying.

La figure 3 montre également le système de mécanisation de l' ensemble supérieur mobile, constitué du moteur 22 et des vérins 20 auxquels le mouvement est transmis par une distribution de type connu. En service normal, la course de ces vérins est telle que l'épaisseur de l'espace 10 peut varier de 5 mm à 300 mm, et de préférence entre 30 mm et 300 mm dans le cas des tôles, afin d'éviter tout risque d'accrochage tout en conservant une efficacité de refroidissement satisfaisante. Il a cependant été trouvé intéressant de pouvoir augmenter cette distance jusqu'à 500 mm, afin de faciliter les interventions en cas de blocage d'un produit.FIG. 3 also shows the mechanization system of the mobile upper assembly, consisting of the motor 22 and the jacks 20 to which the movement is transmitted by a known type of distribution. In normal service, the stroke of these cylinders is such that the thickness of the space 10 can vary from 5 mm to 300 mm, and preferably between 30 mm and 300 mm in the case of sheets, in order to avoid any risk. attachment while maintaining a satisfactory cooling efficiency. However, it has been found advantageous to be able to increase this distance up to 500 mm, in order to facilitate interventions in the event of a product jamming.

Elle montre enfin que les socles 21 sont munis de pivots 31, auxquels correspondent des fourreaux 32 fixés sur les goussets 19, destinés à assurer le guidage de l'ensemble supérieur mobile lorsqu'il est mis en place dans l'installation.Finally, it shows that the bases 21 are provided with pivots 31, which correspond to sleeves 32 fixed on the gussets 19, intended to guide the movable upper assembly when it is put in place in the installation.

Claims (9)

1. Dispositif pour refroidir, au moyen d'un liquide aqueux, un produit métallique présentant au moins une surface plane, le dit produit métallique défilant selon une trajectoire prédéterminée, caractérisé en ce qu'il comporte une paroi disposée en face de la dite surface plane du produit à refroidir et de façon sensiblement parallèle à celle-ci, de façon à former entre la dite surface plane et la dite paroi un espace d'épaisseur sensiblement constante, en ce que la dite paroi est percée d'au moins un orifice débouchant dans le dit espace et assurant le passage du liquide aqueux précité à travers la dite paroi, en ce que le dit orifice est relié à une source du dit liquide aqueux et en ce qu'il comporte des moyens de réglage du débit du liquide aqueux et de la distance entre la dite paroi et la surface plane du produit à refroidir.1. Device for cooling, by means of an aqueous liquid, a metal product having at least one flat surface, the said metal product moving along a predetermined path, characterized in that it comprises a wall disposed opposite the said surface plane of the product to be cooled and substantially parallel thereto, so as to form between said flat surface and said wall a space of substantially constant thickness, in that said wall is pierced with at least one orifice opening into said space and ensuring the passage of the aforementioned aqueous liquid through said wall, in that said orifice is connected to a source of said aqueous liquid and in that it comprises means for adjusting the flow rate of aqueous liquid and the distance between said wall and the flat surface of the product to be cooled. 2. Dispositif suivant la revendication 1, caractérisé en ce que les dits orifices sont répartis en quinconce, au moins dans la partie de la paroi qui fait face à la surface plane du produit à refroidir.2. Device according to claim 1, characterized in that the said orifices are staggered, at least in the part of the wall which faces the flat surface of the product to be cooled. 3. Dispositif suivant l'une ou l'autre des revendications 1 et 2, caractérisé en ce que la dite paroi comporte au moins 100 orifices par mètre carré et en ce que le diamètre de ces orifices est compris entre 0,5 mm et 10 mm, de préférence entre 1 mm et 5 mm.3. Device according to either of Claims 1 and 2, characterized in that the said wall has at least 100 orifices per square meter and in that the diameter of these orifices is between 0.5 mm and 10 mm, preferably between 1 mm and 5 mm. 4. Dispositif suivant la revendication 3, caractérisé en ce que les orifices percés dans la face avant du caisson sont pourvus d'embouts tubulaires se prolongeant à l'intérieur du caisson.4. Device according to claim 3, characterized in that the holes drilled in the front face of the box are provided with tubular end pieces extending inside the box. 5. Installation pour le refroidissement d'un produit métallique présentant une surface inférieure et une surface supérieure planes, sensiblement horizontales, notamment une tôle, qui se déplace sur un convoyeur à rouleaux, caractériséeen ce qu'elle comporte : A. un ensemble dit inférieur, fixe, comprenant : (a) des caissons dits inférieurs, disposés sous le produit entre les rouleaux du dit convoyeur, de telle façon que leur face avant soit située en retrait par rapport au plan de contact entre le produit et les rouleaux du convoyeur; (b) des moyens d'alimentation de ces caissons inférieurs en liquide aqueux de refroidissement; B. un ensemble dit supérieur, mobile en direction verticale, comprenant : (c) des caissons dits supérieurs, disposés au-dessus du produit, sensiblement en face des dits caissons inférieurs; (d) entre les dits caissons supérieurs, des entretoises présentant une section rectangulaire dont la largeur est égale à la distance séparant deux caissons voisins et dont la hauteur est supérieure à la hauteur de ces caissons supérieurs, ces entretoises étant solidarisées avec les caissons adjacents, de telle façon que leur face inférieure soit située au même niveau que la face avant des dits caissons supérieurs; (e) des longerons auxquels est suspendu l'ensemble constitué par les entretoises et les caissons supérieurs précités, la dite suspension étant de préférence réalisée par soudage des entretoises aux longerons; (f) des goussets transversaux supportant les dits longerons; (g) des moyens d'alimentation des dits caissons supérieurs en liquide aqueux de refroidissement; C. des moyens de réglage de la position verticale de l'ensemble supérieur mobile (B) par rapport à l'ensemble inférieur fixe (A), comprenant : (h) un moteur solidaire de l'ensemble mobile (B), monté au-dessus des dites entretoises; (i) des vérins disposés aux extrémités des goussets transversaux précités et prenant appui sur la fondation de l'installation; (j) un mécanisme de distribution, monté sur le dit ensemble mobile (B) et assurant la commande des dits vérins par le moteur précité; D. des moyens d'évacuation du liquide aqueux débité par les dits caissons inférieurs et supérieurs. 5. Installation for cooling a metallic product having a bottom surface and a planar surface, substantially horizontal, in particular a sheet, which moves on a roller conveyor, characterized in that it comprises: A. a so-called lower, fixed assembly, comprising: (a) so-called lower boxes, placed under the product between the rollers of said conveyor, so that their front face is set back relative to the contact plane between the product and the rollers of the conveyor; (b) means for supplying these lower chambers with aqueous cooling liquid; B. a so-called upper assembly, movable in the vertical direction, comprising: (c) so-called upper boxes, placed above the product, substantially opposite said bottom boxes; (d) between the said upper caissons, spacers having a rectangular section whose width is equal to the distance separating two neighboring caissons and whose height is greater than the height of these upper caissons, these spacers being secured to the adjacent caissons, so that their lower face is located at the same level as the front face of said upper boxes; (e) longitudinal members to which the assembly consisting of the above-mentioned spacers and upper boxes is suspended, said suspension preferably being produced by welding the spacers to the longitudinal members; (f) transverse gussets supporting said beams; (g) means for supplying said upper boxes with aqueous cooling liquid; C. means for adjusting the vertical position of the movable upper assembly (B) relative to the fixed lower assembly (A), comprising: (h) a motor integral with the mobile assembly (B), mounted above said spacers; (i) cylinders arranged at the ends of the aforementioned transverse gussets and bearing on the foundation of the installation; (j) a distribution mechanism, mounted on said mobile assembly (B) and ensuring the control of said jacks by the aforementioned motor; D. means for discharging the aqueous liquid supplied by said upper and lower boxes. 6. Installation suivant la revendication 5, caractérisée en ce que les entretoises et les longerons précités sont creux, en ce qu'ils sont fermés à leurs extrémités et en ce que leurs volumes intérieurs sont reliés entr'eux de façon à former un circuit parcouru par un liquide de refroidissement, de préférence de l'eau.6. Installation according to claim 5, characterized in that the aforementioned spacers and longitudinal members are hollow, in that they are closed at their ends and in that their internal volumes are connected between them so as to form a circuit traversed with a coolant, preferably water. 7. Installation suivant l'une ou l'autre des revendications 5 et 6, caractériséeen ce que la face avant des dits caissons inférieurs est pourvue de dents faisant saillie sensiblement horizontale, de préférence vers l'amont par rapport au sens de déplacement du produit.7. Installation according to either of claims 5 and 6, characterized in that the front face of said lower boxes is provided with teeth projecting substantially horizontal, preferably upstream relative to the direction of movement of the product. . 8. Installation suivant l'une ou l'autre des revendications 5 à 7, caractériséeen ce que les moyens d'évacuation du liquide aqueux comprennent une cloison entourant au moins le dit ensemble inférieur fixe (A).8. Installation according to either of Claims 5 to 7, characterized in that the means for discharging the aqueous liquid comprise a partition surrounding at least the said fixed lower assembly (A). 9. Installation suivant la revendication 8, caractérisée en ce que la dite cloison est percée d'ouvertures d'entrée et de sortie du produit dans l'installation, et en ce que ces ouvertures sont pourvues de moyens, par exemple des dispositifs de projection de liquide aqueux en direction transversale par rapport au sens de déplacement du produit, pour empêcher tout écoulement du dit liquide aqueux à travers ces ouvertures.9. Installation according to claim 8, characterized in that said partition is pierced with inlet and outlet openings of the product in the installation, and in that these openings are provided with means, for example projection devices aqueous liquid in transverse direction relative to the direction of movement of the product, to prevent any flow of said aqueous liquid through these openings.
EP85870133A 1984-10-09 1985-10-01 Cooling apparatus for moving metallic products Expired - Lifetime EP0178281B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85870133T ATE60260T1 (en) 1984-10-09 1985-10-01 COOLING SYSTEM FOR MOVING METALLIC PRODUCTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE6048016 1984-10-09
BE6/48016A BE900784A (en) 1984-10-09 1984-10-09 DEVICE FOR COOLING A MOVING METAL PRODUCT AND INSTALLATION COMPRISING THE APPLICATION.

Publications (3)

Publication Number Publication Date
EP0178281A2 true EP0178281A2 (en) 1986-04-16
EP0178281A3 EP0178281A3 (en) 1987-12-23
EP0178281B1 EP0178281B1 (en) 1991-01-23

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EP85870133A Expired - Lifetime EP0178281B1 (en) 1984-10-09 1985-10-01 Cooling apparatus for moving metallic products

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US (1) US4723562A (en)
EP (1) EP0178281B1 (en)
JP (1) JPS61179814A (en)
KR (1) KR920008557B1 (en)
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EP1938911A1 (en) * 2006-12-27 2008-07-02 VAI Industries (UK) Ltd. Apparatus and method for controlled cooling
EP2108465A1 (en) 2008-04-07 2009-10-14 Siemens VAI Metals Technologies Ltd. Method and apparatus for controlled cooling
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DE10215229A1 (en) * 2002-04-06 2003-10-16 Sms Demag Ag Device for cooling rolling stock within the cooling section of a rolling mill
EP2783766A1 (en) * 2013-03-25 2014-10-01 Siemens VAI Metals Technologies GmbH Cooling section with lower spray bar
CN105032958B (en) * 2015-08-24 2018-04-20 东北大学 Using the instant cooling system and cooling means of cooling technique controlled rolling between passage
DE102017127470A1 (en) * 2017-11-21 2019-05-23 Sms Group Gmbh Chilled beams and cooling process with variable cooling rate for steel sheets
CA3086116C (en) 2017-12-20 2022-05-31 Danieli & C. Officine Meccaniche S.P.A. Apparatus for the thermal treatment of metallic products

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EP0297077A2 (en) * 1987-06-26 1988-12-28 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Cooling device for moving metal products
EP0297077A3 (en) * 1987-06-26 1989-10-04 Centre De Recherches Metallurgiques Centrum Voor Research In De Metallurgie Association Sans But Lucratif Cooling device for moving metal products
US8282747B2 (en) 2006-08-18 2012-10-09 Nippon Steel Corporation Cooling method of steel plate
EP1938911A1 (en) * 2006-12-27 2008-07-02 VAI Industries (UK) Ltd. Apparatus and method for controlled cooling
WO2008077449A1 (en) * 2006-12-27 2008-07-03 Siemens Vai Metals Technologies Ltd. Apparatus and method for controlled cooling
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EP2108465A1 (en) 2008-04-07 2009-10-14 Siemens VAI Metals Technologies Ltd. Method and apparatus for controlled cooling
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DK457285A (en) 1986-04-10
JPS61179814A (en) 1986-08-12
US4723562A (en) 1988-02-09
CA1246339A (en) 1988-12-13
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BR8504981A (en) 1986-07-29
DK457285D0 (en) 1985-10-08
ES8700092A1 (en) 1986-10-01
BE900784A (en) 1985-04-09
ES549477A0 (en) 1986-10-01
AU577628B2 (en) 1988-09-29
KR860003069A (en) 1986-05-19
ES8608954A1 (en) 1986-09-01
ATE60260T1 (en) 1991-02-15
EP0178281A3 (en) 1987-12-23
EP0178281B1 (en) 1991-01-23
AU4845285A (en) 1986-04-17
ES547665A0 (en) 1986-09-01
ZA857762B (en) 1987-03-25

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