WO1983000646A1 - Cooling device for rod wire - Google Patents

Cooling device for rod wire Download PDF

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Publication number
WO1983000646A1
WO1983000646A1 PCT/BE1982/000018 BE8200018W WO8300646A1 WO 1983000646 A1 WO1983000646 A1 WO 1983000646A1 BE 8200018 W BE8200018 W BE 8200018W WO 8300646 A1 WO8300646 A1 WO 8300646A1
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WO
WIPO (PCT)
Prior art keywords
liquid medium
compartment
wire
cooling
conveyor
Prior art date
Application number
PCT/BE1982/000018
Other languages
French (fr)
Inventor
De Recherches Metallurgiques Centre
Original Assignee
Economopoulos, Marios
Lambert, Nicole
Simon, Pierre
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from BE6/47507A external-priority patent/BE890079A/en
Priority claimed from BE6/47509A external-priority patent/BE890102A/en
Priority claimed from BE6/47644A external-priority patent/BE892891A/en
Application filed by Economopoulos, Marios, Lambert, Nicole, Simon, Pierre filed Critical Economopoulos, Marios
Priority to AU88253/82A priority Critical patent/AU8825382A/en
Priority to BR8207830A priority patent/BR8207830A/en
Publication of WO1983000646A1 publication Critical patent/WO1983000646A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C21D9/5732—Continuous furnaces for strip or wire with cooling of wires; of rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/26—Special arrangements with regard to simultaneous or subsequent treatment of the material
    • B21C47/262—Treatment of a wire, while in the form of overlapping non-concentric rings

Definitions

  • Cooling device for wire rod
  • the present invention relates to a cooling device for wire rod spread in non-coaxial turns on a conveyor, this device being able to be used indifferently in any heat treatment, particularly at the outlet of the rolling mill, comprising one or more cooling phases.
  • cooling can be produced by blowing air, but this method is not satisfactory in all cases, because of a relatively limited cooling intensity and insufficient cooling homogeneity.
  • Such cooling can also be produced by immersion in boiling water with the advantages of good homogeneity and a greater cooling intensity than that of air blowing.
  • This modality has technological particularities because of the difference in level and the length necessary to immerse in the boiling water of the conveyor supporting the turns (deflection, etc.).
  • the volume of water used in this type of cooling is therefore quite large, which can be the cause of certain difficulties in cases where temperature regulation must be ensured. It is in particular for this reason that the water temperature remains maintained at boiling point.
  • the treatment comprises several rapid cooling operations
  • several devices in accordance with the invention can be used at the different stages corresponding to these operations.
  • This invention based on the use of a horizontal or substantially horizontal conveyor on which the wire is spread in non-coaxial turns, in principle comprises means capable of raising the level of a liquid medium to cover the turns of this wire located on the conveyor and means capable of lowering the level of this same medium; one can thus put at will the liquid medium in contact or not with the turns of wire.
  • This invention makes it possible to meet the requirements which a cooling operation implemented in a wire rod heat treatment should meet:
  • the device which is the subject of the present invention a device intended for cooling the wire rod spread out in non-coaxial turns on a conveyor, is essentially characterized in that it comprises a tank provided with inlet and outlet ports for a horizontal or substantially horizontal conveyor, intended to receive the wire to be cooled, in that said tank comprises below the level of the inlet and outlet orifices of the conveyor, a preferably central compartment, called a feed compartment, with means for supplying coolant medium, and compartments called recovery of coolant medium, preferably located at the upstream and downstream ends of said feed compartment, and above said level of the inlet and outlet orifices of the conveyor a so-called cover compartment with wire to be cooled, and in that the feed, cover and recovery compartments as well as a pump e constitute a closed circuit for circulation of the liquid medium.
  • liquid medium By liquid medium, it is necessary to understand a medium consisting either of liquid only, or for example of water, or of a liquid containing in solution and / or in suspension, surface-active elements, corrosion inhibitors, materials which reinforce the pickling power or the heat transfer capacity, mineral or organic salts, etc ...; likewise an emulsion, for example water / oil, is also considered to be a liquid medium, in the sense of the invention.
  • the means for supplying liquid medium allow rapid circulation of this medium and practically instantaneous switching from cooling in liquid medium to cooling in air.
  • the device comprises means for regulating the temperature of the liquid medium as a function of the treatment to be carried out and / or means for controlling the emission of vapor from this liquid medium.
  • the device comprises means for filtering the liquid medium used (elimination of sludge).
  • the passage of all or at least the major part of the liquid cooling medium from the supply compartment into the covering compartment is produced along the side walls of the tank.
  • the passage of the cooling medium along the walls of the tank is ensured through so-called lateral outlets, formed in a wall separating the supply compartment and the covering compartment.
  • the cooling medium entering through said lateral vents spreads in the covering compartment on the one hand towards the central part of this compartment, located between the lateral vents and on the other hand respectively towards the areas upstream and downstream of this central part.
  • the supply compartment includes deflectors to direct the liquid medium towards the side walls of the tank.
  • the side vents for the passage of the liquid medium can be of any shape and size, provided that they are capable of playing their role of appropriate diffuser of the liquid medium on the wire in turn; It does not depart from the invention to use both lateral vents to ensure the passage of most of the liquid medium, and these orifices spaced from the walls of the tank to allow secondary supply through the tank.
  • a so-called full separation plate in which it is optionally housed orifices preferably closable with shutters, for example with slides.
  • the tank can be provided, at a level located under the conveyor, with a mesh or a perforated plate above the compartments for recovering the liquid medium.
  • the device comprises means to modify the surface of the zone of recovery of the turns by the liquid medium, these means advantageously consisting of obturation devices, for example arranged against the grating or the perforated plate located in the zones for discharging the liquid medium.
  • the device comprises means for retaining the liquid medium, for example constituted by valves situated above the level of the said inlet and outlet orifices of the conveyor, valves whose upper ends are fixed. has a joint and whose lower ends rest on the moving wire.
  • valves mentioned above are advantageously balanced by counterweights, so as to have as little resistance as possible to the movement of the turns on which their lower ends rest.
  • the device is equipped with hydraulic means for retaining the liquid medium, the aim of which is to increase the pressure drop in the current in circulation, without hampering the movement of the product deposited on the conveyor.
  • these means for retaining the liquid medium are constituted by devices for injecting this liquid, preferably arranged under the surface for circulation of the wire and injecting a liquid, from bottom to top, through and against the current of the liquid medium.
  • these means for retaining the liquid medium are constituted by protuberances formed in the upper face of the bottom plates of the overlap zone. Besides its impact on the cooling conditions of the submerged wire, this opposition to the circulation of the liquid medium also has the beneficial effect of reducing the flow rate of the supply means of the circuit; these are normally arranged to provide forced feed from below to the covering compartment and preferably consist of a single pump, for example a pump of the so-called "propeller" type.
  • the device according to the invention may comprise a system for conditioning the temperature of the liquid medium with the possibility of collecting, evacuating and / or condensing the vapor formed.
  • the means for controlling the temperature and the emission of vapor consist of a system for adding cold liquid medium (for example water), preferably located above the cooling device, which can comprise - nozzles (spraying, mist) and a system for evacuating the liquid medium capable of draining an amount corresponding at least to the intake (by overflow, racking, etc.).
  • a system for adding cold liquid medium for example water
  • the cooling device which can comprise - nozzles (spraying, mist) and a system for evacuating the liquid medium capable of draining an amount corresponding at least to the intake (by overflow, racking, etc.).
  • the means for controlling the emission of vapor can also consist, according to the invention, in a system comprising fans intended for the extraction of the emitted vapor, this system being used alone or in combination with that of addition of aqueous medium cold.
  • the means for controlling the temperature and the emission of vapor from the liquid medium comprise a computer programmed as a function of a thermal model of the installation and of the various parameters representative of the process to be controlled.
  • the device can also include means for putting said turns under a protective atmosphere, for example under nitrogen.
  • the device which has just been recalled has in particular the following advantages:
  • a compact device is available which is always easily placed below the treatment lines and which ensures the conditions of homogeneity, of intense intensity. quick switching and generally required in all wire rod heat treatments.
  • Figures 1 to 3 attached show, by way of non-limiting example, a method of building a device according to the invention.
  • the device comprises a tank 1 arranged on the path of movement of the wire 2 spread in non-coaxial turns on a conveyor circulating above perforated plates 3 and full plates 3bis; the wire moves in the direction of arrow 4.
  • This tank 1 comprises a central injection compartment 5 surrounded by compartments 6 and 7 for evacuating (or recovering) the aqueous medium in the direction of the pump 8; this evacuation can be braked for example using a transverse curtain of water jets, directed from bottom to top from the boxes 27 and 28.
  • compartments 6 and 7 located on the path of the wire have inlet 12 and outlet 13 holes for the turns in the device.
  • the pump 8 is located below the tank 1 which it supplies with water via the vertical duct 14.
  • the draining circuit comprises the compartments 6 and 7, as well as the manifold 16 replenishing the pump 8.
  • FIG. 2 is a plan view of the area of movement of the wire turns between the inlet 12 and outlet 13 areas; this movement area includes the following sections:
  • injection section where the aqueous medium intended to cover the turns is brought in through the side vents 22 and 23
  • covering section where the aqueous medium covers the turns.
  • This section includes the central zone 24 between the gills 22 and 23 and the zones upstream 25 and downstream 26 of the injection zone;
  • the device also includes lateral guides 21 located on either side of the wire movement area between the entry 12 and exit 13 doors.
  • Figure 3 gives a cross-sectional view of the injection area; the water is propelled by the pump 8 in the central duct 14 from where it reaches the injection openings 22 and 23 along the deflector 29; water thus reaches the lateral zones where the wire turns rest on each other and it spreads towards the central part of these turns, in part 24 of the overlap zone, as well as in the zones upstream and in downstream (not shown in the figure).
  • the collecting pipe 16 brings the water back to the pump 8.
  • the "compartments” may in fact be zones existing in the circulating liquid, without material separation walls.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Coating With Molten Metal (AREA)

Abstract

Device for cooling in a vat (1) a wire spread in non coaxial turns on a horizontal conveyor comprising under the level of inlet (12) and outlet (13) openings of the conveyors into the vat (1), a compartment fitted with supply means in a cooling liquid medium, and compartments for collecting said liquid medium; above the level of said inlet (12) and outlet (13) orifices, the device comprises a so-called covering compartment for the wire to be cooled; the compartments for the supply, covering and collection as well as a pump (8) form together a closed, preferably rapid, circulation circuit of the liquid medium.

Description

Dispositif de refroidissement pour fil machine. Cooling device for wire rod.
La présente invention est relative à un dispositif de refroidissement pour fil machine étalé en spires non coaxiales sur un convoyeur, ce dispositif pouvant être utilisé indifféremment dans tout traitement thermique, particulièrement à la sortie du laminoir, comprenant une ou plusieurs phases de refroidissement.The present invention relates to a cooling device for wire rod spread in non-coaxial turns on a conveyor, this device being able to be used indifferently in any heat treatment, particularly at the outlet of the rolling mill, comprising one or more cooling phases.
Le refroidissement du fil machine étalé en spires non coaxiales sur un convoyeur est bien connu et peut être réalisé de plusieurs manières différentes.The cooling of the wire rod spread in non-coaxial turns on a conveyor is well known and can be achieved in several different ways.
Par exemple, un tel refroidissement peut être produit par soufflage d'air, mais cette modalité ne donne pas satisfaction dans tous les cas, à cause d'une intensité ce refroidissement relativement limitée et d'une homogénéité de refroidissement insuffisante. Un tel refroidissement peut également être produit par immersion dans de l'eau bouillante avec les avantages d'une bonne homogénéité et d'une intensité de refroidissement plus importante que celle du soufflage d'air. Cette modalité comporte des particularités technologiques à cause de la différence de niveau et de la longueur nécessaire pour effectuer l'immersion dans l'eau bouillante du convoyeur supportant les spires (déflexion, etc...). Le volume d'eau utilisé dans ce type de refroidissement est de ce fait assez important, ce qui peut être la cause de certaines difficultés dans les cas où la régulation de la température doit être assurée. C'est en particulier pour cette raison que la température de l'eau reste maintenue à l'ébullition.For example, such cooling can be produced by blowing air, but this method is not satisfactory in all cases, because of a relatively limited cooling intensity and insufficient cooling homogeneity. Such cooling can also be produced by immersion in boiling water with the advantages of good homogeneity and a greater cooling intensity than that of air blowing. This modality has technological particularities because of the difference in level and the length necessary to immerse in the boiling water of the conveyor supporting the turns (deflection, etc.). The volume of water used in this type of cooling is therefore quite large, which can be the cause of certain difficulties in cases where temperature regulation must be ensured. It is in particular for this reason that the water temperature remains maintained at boiling point.
Le demandeur a eu l'idée originale de mettre au point un dispositif susceptible ce convenir dans tous les cas où un refroidissement de fil machine étalé en spires non coaxiales sur un convoyeur doit être pratiqué, quel que soit le type ou la phase de traitement dans lequel cette opération doit s'insérer. Un tel dispositif constitue précisément l'objet de la présente invention.The applicant had the original idea of developing a device which could be suitable in all cases where a cooling of wire rod spread in non-coaxial turns on a conveyor must be practiced, whatever the type or the phase of treatment in which this operation must be inserted. Such a device is precisely the object of the present invention.
Si le traitement comprend plusieurs opérations de refroidissement rapide, plusieurs dispositifs conformes à l'invention peuvent être utilisés aux différents stades correspondant à ces opérations.If the treatment comprises several rapid cooling operations, several devices in accordance with the invention can be used at the different stages corresponding to these operations.
Cette invention, basée sur l'utilisation d'un convoyeur horizontal ou sensiblement horizontal sur lequel est étalé le fil en spires non coaxiales, comprend dans son principe, des moyens aptes à élever le niveau d'un milieu liquide pour recouvrir les spires ce fil situées sur le convoyeur et des moyens aptes à abaisser le niveau de ce même milieu; on peut ainsi mettre à volonté le milieu liquide en contact ou non avec les spires de fil. Cette invention permet de satisfaire aux exigences auxquelles une opération de refroidissement mise en oeuvre dans un traitement thermique de fil machine devrait répondre :This invention, based on the use of a horizontal or substantially horizontal conveyor on which the wire is spread in non-coaxial turns, in principle comprises means capable of raising the level of a liquid medium to cover the turns of this wire located on the conveyor and means capable of lowering the level of this same medium; one can thus put at will the liquid medium in contact or not with the turns of wire. This invention makes it possible to meet the requirements which a cooling operation implemented in a wire rod heat treatment should meet:
- homogénéité du refroidissement,- homogeneity of cooling,
- réglage de l'intensité du refroidissement,- adjustment of the cooling intensity,
- facilité d'installation sans modification des trains existants,- ease of installation without modification of existing trains,
- rapidité de commutation du refroidissement milieu liquide-air.- switching speed of liquid-air medium cooling.
Le dispositif faisant l'objet de la présente invention, dispositif destiné au refroidissement du fil machine étalé en spires non coaxiales sur un convoyeur, est essentiellement caractérisé en ce qu'il comprend une cuve munie d'orifices d'entrée et de sortie d'un convoyeur horizontal ou sensiblement horizontal, destiné à recevoir le fil à refroidir, en ce que la dite cuve comporte en dessous du niveau des orifices d'entrée et de sortie du convoyeur, un compartiment de préférence central, dit d'alimentation, avec des moyens d'alimentation en milieu liquide de refroidissement, et des compartiments dits de récupération du milieu liquide de refroidissement, de préférence situés aux extrémités amont et aval du dit compartiment d'alimentation, et audessus du dit niveau des orifices d'entrée et de sortie du convoyeur un compartiment dit de recouvrement eu fil à refroidir, et en ce que les compartiments d'alimentation, de recouvrement et de récupération ainsi qu'une pompe constituent un circuit fermé de circulation du milieu liquide.The device which is the subject of the present invention, a device intended for cooling the wire rod spread out in non-coaxial turns on a conveyor, is essentially characterized in that it comprises a tank provided with inlet and outlet ports for a horizontal or substantially horizontal conveyor, intended to receive the wire to be cooled, in that said tank comprises below the level of the inlet and outlet orifices of the conveyor, a preferably central compartment, called a feed compartment, with means for supplying coolant medium, and compartments called recovery of coolant medium, preferably located at the upstream and downstream ends of said feed compartment, and above said level of the inlet and outlet orifices of the conveyor a so-called cover compartment with wire to be cooled, and in that the feed, cover and recovery compartments as well as a pump e constitute a closed circuit for circulation of the liquid medium.
Par milieu liquide, il faut comprendre un milieu constitué soit de liquide uniquement, soit par exemple de l'eau, soit d'un liquide contenant en solution et/ou en suspension, des éléments tensio-actifs, des inhibiteurs de corrosion, des matières qui renforcent le pouvoir décapant ou la capacité de transfert calorifique, des sels minéraux ou organiques, etc...; de même une émulsion par exemple eau/huile, est également considérée comme un milieu liquide, au sens ce l'invention. Suivant une première modalité de l'invention, les moyens d' alimentation en milieu liquide permettent une circulation rapide de ce milieu et une commutation pratiquement instantanée du refroidissement sous milieu liquide au refroidissement à l'air.By liquid medium, it is necessary to understand a medium consisting either of liquid only, or for example of water, or of a liquid containing in solution and / or in suspension, surface-active elements, corrosion inhibitors, materials which reinforce the pickling power or the heat transfer capacity, mineral or organic salts, etc ...; likewise an emulsion, for example water / oil, is also considered to be a liquid medium, in the sense of the invention. According to a first embodiment of the invention, the means for supplying liquid medium allow rapid circulation of this medium and practically instantaneous switching from cooling in liquid medium to cooling in air.
Suivant une deuxième modalité de l'invention, le dispositif comprend des moyens pour régler la température du milieu liquide en fonction du traitement à réaliser et/ou des moyens pour contrôler l'émission de vapeur de ce milieu liσuide.According to a second embodiment of the invention, the device comprises means for regulating the temperature of the liquid medium as a function of the treatment to be carried out and / or means for controlling the emission of vapor from this liquid medium.
Suivant une troisième modalité de l'invention, le dispositif comprend des moyens pour filtrer le milieu liquide utilisé (élimination des boues).According to a third embodiment of the invention, the device comprises means for filtering the liquid medium used (elimination of sludge).
Suivant encore une autre modalité de l'invention,le passage de tout ou au moins de la majeure partie du milieu liquide de refroidissement du compartiment d'alimentation dans le compartiment de recouvrement est réalisé le long des parois latérales de la cuve.According to yet another embodiment of the invention, the passage of all or at least the major part of the liquid cooling medium from the supply compartment into the covering compartment is produced along the side walls of the tank.
Selon une variante de cette modalité, le passage du milieu liσuide de refroidissement le long des parois de la cuve est assuré au travers d'ouies dites ouieε latérales, ménagées dans une paroi séparant le compartiment d'alimentation et le compartiment de recouvrement.According to a variant of this method, the passage of the cooling medium along the walls of the tank is ensured through so-called lateral outlets, formed in a wall separating the supply compartment and the covering compartment.
Suivant cette disposition de l'invention, le milieu de refroidissement entrant par les dites ouïes latérales se répand dans le compartiment de recouvrement d'une part vers la partie centrale de ce compartiment, située entre les ouïes latérales et d'autre part respectivement vers les zones en amont et en aval de cette partie centrale.According to this arrangement of the invention, the cooling medium entering through said lateral vents spreads in the covering compartment on the one hand towards the central part of this compartment, located between the lateral vents and on the other hand respectively towards the areas upstream and downstream of this central part.
Encore dans une modalité particulière du dispositif de l'invention le compartiment d'alimentation comporte des déflecteurs pour diriger le milieu liquide vers les parois latérales de la cuve.Still in a particular form of the device of the invention, the supply compartment includes deflectors to direct the liquid medium towards the side walls of the tank.
On comprend immédiatement que cette façon de faire circuler le milieu liquide met de façon permanente en contact le milieu liquide le plus frais - aux entrées du compartiment de recouvrement - et la masse de métal la plus importante, c'est-à-dire celle située le long des parois latérales du compartiment, là où les spires non coaxiales reposent jointivement les unes sur les autres; par la suite, le milieu liquide se répand dans la totalité du compartiment.It is immediately understood that this way of circulating the liquid medium permanently puts in contact the coolest liquid medium - at the entrances to the covering compartment - and the largest mass of metal, that is to say that located along the side walls of the compartment, where the non-coaxial turns rest contiguously on each other; thereafter, the liquid medium spreads throughout the compartment.
Suivant l'invention, les ouïes latérales pour le passage du milieu liquide peuvent être de formes et de dimensions quelconques, pour autant qu'elles soient aptes à jouer leur rôle de diffuseur approprié du milieu liquide sur le fil en spire; il ne sort pas de l'invention d'utiliser à la fois des ouïes latérales pour assurer le passage de la plus grande partie du milieu liσuide, et ces orifices écartés des parois de la cuve pour permettre une alimentation secondaire en travers de la cuve.According to the invention, the side vents for the passage of the liquid medium can be of any shape and size, provided that they are capable of playing their role of appropriate diffuser of the liquid medium on the wire in turn; It does not depart from the invention to use both lateral vents to ensure the passage of most of the liquid medium, and these orifices spaced from the walls of the tank to allow secondary supply through the tank.
Dans une réalisation particulière du dispositif perfectionné, objet de l'invention, on dispose, en dessous du niveau du convoyeur et au-dessus du compartiment d'alimentation et partiellement au-dessus du compartiment de récupération du milieu liσuide une plaque de séparation dite pleine, dans laquelle on ménage éventuellement des orifices de préférence obturables à l'aide de volets, par exemple à glissières.In a particular embodiment of the improved device, object of the invention, there is available, below the level of the conveyor and above the feed compartment and partially above the recovery compartment of the liquid medium, a so-called full separation plate , in which it is optionally housed orifices preferably closable with shutters, for example with slides.
Encore suivant l'invention, la cuve peut être munie, à un niveau situé sous le convoyeur, d'un grillage ou d'une plaque perforée au-dessus des compartiments de récupération du milieu liquide.Still according to the invention, the tank can be provided, at a level located under the conveyor, with a mesh or a perforated plate above the compartments for recovering the liquid medium.
Egalement suivant l'invention, le dispositif comprend des moyens pour modifier la surface de la zone de recouvrement des spires par le milieu liquide, ces moyens consistant avantageusement en dispositifs d'obturation par exemple disposés contre le grillage ou la plaque perforée située dans les zones d'évacuation du milieu liquide.Also according to the invention, the device comprises means to modify the surface of the zone of recovery of the turns by the liquid medium, these means advantageously consisting of obturation devices, for example arranged against the grating or the perforated plate located in the zones for discharging the liquid medium.
Suivant encore une modalité de l'invention, le dispositif comporte des moyens de retenue du milieu liquide par exemple constitués par des clapets situés au-dessus du niveau des dits orifices d'entrée et de sortie du convoyeur, clapets dont les extrémités supérieures sont fixées a une articulation et dont les extrémités inférieures reposent sur le fil en mouvement.According to yet another form of the invention, the device comprises means for retaining the liquid medium, for example constituted by valves situated above the level of the said inlet and outlet orifices of the conveyor, valves whose upper ends are fixed. has a joint and whose lower ends rest on the moving wire.
Les clapets mentionnés ci-dessus sont avantageusement équilibrés par des contrepoids, de manière à présenter une résistance aussi faible que possible au déplacement des spires sur lesquelles leurs extrémités inférieure reposent.The valves mentioned above are advantageously balanced by counterweights, so as to have as little resistance as possible to the movement of the turns on which their lower ends rest.
Dans un autre mode de réalisation, le dispositif est équipé de moyens hydrauliques de retenue du milieu liquide, dont le but est d'augmenter la perte de charge dans le courant en circulation, sans contrarier le mouvement du produit déposé sur le convoyeur.In another embodiment, the device is equipped with hydraulic means for retaining the liquid medium, the aim of which is to increase the pressure drop in the current in circulation, without hampering the movement of the product deposited on the conveyor.
Suivant l'invention, ces moyens de retenue du milieu liquide sont constitués par des dispositifs d'injection ce liquide disposés de préférence sous la surface de circulation du fil et injectant un liquide, de bas en haut, au travers et à contre-courant du milieu liquide.According to the invention, these means for retaining the liquid medium are constituted by devices for injecting this liquid, preferably arranged under the surface for circulation of the wire and injecting a liquid, from bottom to top, through and against the current of the liquid medium.
Egalement suivant l'invention, ces moyens de retenue du milieu liquide sont constitués par des protubérances ménagées dans la face supérieure des plaques de fond de la zone de recouvrement. Outre son incidence sur les conditions de refroidissement du fil immergé, cette opposition à la circulation du milieu liquide a également pour effet bénéfique de diminuer le débit des moyens d'alimentation du circuit; ceux-ci sont normalement disposés pour assurer par le bas une alimentation forcée du compartiment de recouvrement et de préférence constitués par une pompe unique, par exemple une pompe de type dit "à hélice".Also according to the invention, these means for retaining the liquid medium are constituted by protuberances formed in the upper face of the bottom plates of the overlap zone. Besides its impact on the cooling conditions of the submerged wire, this opposition to the circulation of the liquid medium also has the beneficial effect of reducing the flow rate of the supply means of the circuit; these are normally arranged to provide forced feed from below to the covering compartment and preferably consist of a single pump, for example a pump of the so-called "propeller" type.
Le dispositif suivant l'invention peut comprendre un système de conditionnement de la température du milieu liquide avec possibilité de collecte, évacuation et/ou condensation de la vapeur formée.The device according to the invention may comprise a system for conditioning the temperature of the liquid medium with the possibility of collecting, evacuating and / or condensing the vapor formed.
Suivant l'invention, les moyens pour contrôler la température et l'émission de vapeur consistent en un système d'addition de milieu liquide froid (par exemple de l'eau), situé de préférence au-dessus du dispositif de refroidissement, pouvant comprendre- des gicleurs (pulvérisation, brouillard) et un système d'évacuation du milieu liquide capable d'écouler une quantité correspondant au moins à l'apport (par trop-plein, soutirage, etc...).According to the invention, the means for controlling the temperature and the emission of vapor consist of a system for adding cold liquid medium (for example water), preferably located above the cooling device, which can comprise - nozzles (spraying, mist) and a system for evacuating the liquid medium capable of draining an amount corresponding at least to the intake (by overflow, racking, etc.).
Les moyens pour contrôler l'émission de vapeur peuvent aussi consister, suivant l'invention, en un système comprenant des ventilateurs destinés à l'extraction de la vapeur émise, ce système étant utilisé seul ou en combinaison avec celui d'addition de milieu aqueux froid.The means for controlling the emission of vapor can also consist, according to the invention, in a system comprising fans intended for the extraction of the emitted vapor, this system being used alone or in combination with that of addition of aqueous medium cold.
Suivant une modalité avantageuse de l'invention, les moyens pour contrôler la température et l'émission de vapeur du milieu liquide comprennent un calculateur programmé en fonction d'un modèle thermique de l'installation et des différents paramètres représentatifs du processus à contrôler.According to an advantageous embodiment of the invention, the means for controlling the temperature and the emission of vapor from the liquid medium comprise a computer programmed as a function of a thermal model of the installation and of the various parameters representative of the process to be controlled.
Dans le but d'éviter l'oxydation des spires en amont de la zone de recouvrement des spires par le milieu liquife, le dispositif peut également comprendre des moyens pour mettre les dites spires sous atmosphère protectrice, par exemple sous azote.In order to avoid the oxidation of the turns upstream of the zone of recovery of the turns by the liquified medium, the device can also include means for putting said turns under a protective atmosphere, for example under nitrogen.
Vis-à-vis des dispositifs déjà existants, le dispositif qui vient d'être rappelé présente notamment les avantages suivants :With respect to already existing devices, the device which has just been recalled has in particular the following advantages:
- il est d'application facile à tout convoyeur classique utilisé dans les installations existantes, grâce à l'horizontalité ou la sensible horizontalité du plan de circulation des spires;- it is easy to apply to any conventional conveyor used in existing installations, thanks to the horizontality or the sensitive horizontality of the circulation plan of the turns;
- il rend très souple l'application du refroidissement du produit avec pour conséquence la possibilité d'utiliser des lignes plus courtes;- it makes the application of product cooling very flexible, with the consequence of using shorter lines;
- il permet de réguler efficacement et avec précision la température du milieu liquide. Ce résultat est obtenu surtout grâce au volume faible du milieu liquide utilisé;- it allows the temperature of the liquid medium to be effectively and precisely regulated. This result is obtained mainly thanks to the small volume of the liquid medium used;
- il rend possible l'application de nouveaux traitements et notamment de cycles dits "courts" concernant des aciers doux, des aciers pour électrodes de soudure. On peut aussi améliorer la qualité d'aciers de précontrainte avec formation de perlite, ou fabriquer des qualités nouvelles : aciers pour la frappe à froid avec formation de ferrite-martensite, aciers pour la précon trainte avec formation de perlite-martensite, aciers à microstructure composite, par exemple résultant d'une trempe marten sitique suivie d'un autorevenu.- It makes possible the application of new treatments and in particular so-called "short" cycles concerning mild steels, steels for welding electrodes. We can also improve the quality of prestressing steels with perlite formation, or manufacture new qualities: steels for cold stamping with ferrite-martensite formation, steels for pre-tensioned with perlite-martensite formation, steels with microstructure composite, for example resulting from a marten sitic quenching followed by a self-income.
- il est disponible dans tous les cas où un refroidissement de fil machine étalé en spires non coaxiales sur un convoyeur horizontal ou sensiblement horizontal doit être pratiqué, quel que soit le type de la ou des phases de traitement dans lequel cette opération est située.- it is available in all cases where cooling of wire rod spread in non-coaxial turns on a horizontal or substantially horizontal conveyor must be practiced, whatever the type of the treatment phase or phases in which this operation is located.
Grâce à l'invention, on dispose d'un dispositif compact qui trouve toujours aisément place en dessous des lignes de traitement et qui assure les conditions d'homogénéité, d'intensité ré glable et de commutation rapide généralement requises dans tous les traitements thermiques de fil machine.Thanks to the invention, a compact device is available which is always easily placed below the treatment lines and which ensures the conditions of homogeneity, of intense intensity. quick switching and generally required in all wire rod heat treatments.
Les figures 1 à 3 ci-jointes représentent, à titre d'exemple non limitatif, un mode de construction d'un dispositif conforme à l'invention.Figures 1 to 3 attached show, by way of non-limiting example, a method of building a device according to the invention.
Suivant la figure 1, le dispositif comprend une cuve 1 disposée sur la trajectoire de déplacement du fil 2 étalé en spires non coaxiales sur un transporteur circulant au-dessus de taques perforées 3 et de taques pleines 3bis; le fil se déplace dans le sens de la flèche 4.According to Figure 1, the device comprises a tank 1 arranged on the path of movement of the wire 2 spread in non-coaxial turns on a conveyor circulating above perforated plates 3 and full plates 3bis; the wire moves in the direction of arrow 4.
Cette cuve 1 comprend un compartiment central 5 d'injection entouré de compartiments 6 et 7 d'évacuation (ou récupération) du milieu aqueux en direction de la pompe 8; cette évacuation peut être freinée par exemple à l'aide d'un rideau transversal de jets d'eau, dirigés de bas en haut à partir des boîtes 27 et 28.This tank 1 comprises a central injection compartment 5 surrounded by compartments 6 and 7 for evacuating (or recovering) the aqueous medium in the direction of the pump 8; this evacuation can be braked for example using a transverse curtain of water jets, directed from bottom to top from the boxes 27 and 28.
Les parois des compartiments 6 et 7 situés sur la trajectoire du fil comportent des orifices d'entrée 12 et de sortie 13 des spires dans le dispositif.The walls of compartments 6 and 7 located on the path of the wire have inlet 12 and outlet 13 holes for the turns in the device.
La pompe 8 est située en dessous de la cuve 1 qu'elle alimente en eau par l'intermédiaire du conduit vertical 14. Le circuit de vidange comprend les compartiments 6 et 7, ainsi que le collecteur 16 réalimentant la pompe 8.The pump 8 is located below the tank 1 which it supplies with water via the vertical duct 14. The draining circuit comprises the compartments 6 and 7, as well as the manifold 16 replenishing the pump 8.
La figure 2 représente en plan l'aire de déplacement des spires de fil entre l'es zones d'entrée 12 et de sortie 13; cette aire de déplacement comprend les sections suivantes :FIG. 2 is a plan view of the area of movement of the wire turns between the inlet 12 and outlet 13 areas; this movement area includes the following sections:
- la section dite d'injection, où le milieu aqueux destiné à recouvrir les spires est amené par les ouïes latérales 22 et 23; - la section dite de recouvrement, où le milieu aqueux recouvre les spires. Cette section comporte la zone centrale 24 comprise entre les ouies 22 et 23 et les zones en amont 25 et en aval 26 de la zone d'injection;- the so-called injection section, where the aqueous medium intended to cover the turns is brought in through the side vents 22 and 23; - the so-called covering section, where the aqueous medium covers the turns. This section includes the central zone 24 between the gills 22 and 23 and the zones upstream 25 and downstream 26 of the injection zone;
- la section dite d'évacuation, où le milieu aqueux s'écoule dans les compartiments 6 et 7, au travers des orifices 20 pratiqués dans les taques 3.- the so-called evacuation section, where the aqueous medium flows into the compartments 6 and 7, through the orifices 20 made in the plates 3.
Le dispositif comporte également des guides latéraux 21 situés de part et d'autre de l'aire de déplacement du fil entre les portes d'entrée 12 et de sortie 13.The device also includes lateral guides 21 located on either side of the wire movement area between the entry 12 and exit 13 doors.
La figure 3 donne une vue en coupe transversale de la zone d'injection; l'eau est propulsée par la pompe 8 dans le conduit central 14 d'où elle gagne les ouïes d'injection 22 et 23 en longeant le déflecteur 29; l'eau parvient ainsi dans les zones latérales où les spires de fil reposent les unes sur les autres et elle se répand vers la partie centrale ces spires, dans la partie 24 de la zone de recouvrement, ainsi que dans les zones en amont et en aval (non représentées sur la figure). Le conduit collecteur 16 ramène les eaux vers la pompe 8.Figure 3 gives a cross-sectional view of the injection area; the water is propelled by the pump 8 in the central duct 14 from where it reaches the injection openings 22 and 23 along the deflector 29; water thus reaches the lateral zones where the wire turns rest on each other and it spreads towards the central part of these turns, in part 24 of the overlap zone, as well as in the zones upstream and in downstream (not shown in the figure). The collecting pipe 16 brings the water back to the pump 8.
Il doit être entendu, au sens de l'invention, que les "compartiments" peuvent être en fait des zones existant dans le liquide en circulation, sans parois matérielles de séparation.It should be understood, within the meaning of the invention, that the "compartments" may in fact be zones existing in the circulating liquid, without material separation walls.
En ce qui concerne le passage du milieu liquide du compartiment d'alimentation dans le compartiment de recouvrement, il est à noter que selon l'invention, la direction du courant du liquide au moment de son entrée dans le compartiment de recouvrement importe peu; la description détaillée ci-avant donne la modalité, considérée comme avantageuse, dans laquelle ce courant a une direction ascendante. Il faut d'ailleurs encore noter que par alimentation à partir du compartiment situé sous le niveau des orifices d'entrée et de sortie du convoyeur, il faut entendre au sens de l'invention, l'établissement et éventuellement le maintien d'un bain dont la surface supérieure est située au-dessus du niveau correspondant à la plus grande épaisseur du produit déposé ou à déposer sur le convoyeur. With regard to the passage of the liquid medium from the supply compartment into the covering compartment, it should be noted that according to the invention, the direction of the flow of the liquid at the time of its entry into the covering compartment matters little; the detailed description above gives the modality, considered to be advantageous, in which this current has an ascending direction. It should also be noted that by feeding from the compartment located under the level of the inlet and outlet orifices of the conveyor, it is to be understood within the meaning of the invention, the establishment and possibly the maintenance of a bath whose upper surface is located above the level corresponding to the greatest thickness of the product deposited or to be deposited on the conveyor.

Claims

REVENDICATIONS DE BREVET. PATENT CLAIMS.
1. Dispositif de refroidissement du fil étalé en spires non coaxiales sur un convoyeur, caractérisé en ce qu ' il comprend une cuve munie d ' orifices d ' entrée et de sortie d ' un convoyeur horizontal ou sensiblement horizontal destiné à recevoir le fil à refroidir, en ce que la dite cuve comporte en dessous du niveau des orifices d ' entrée et de sortie du convoyeur dans la cuve, un compartiment de préférence central, dit d ' alimentation équipé de moyens d ' alimentation en milieu liquide de refroidissement, et des compartiments dits de récupération du milieu liquide., de refroidissement, de préférence situés en amont et en aval du dit compartiment d ' alimentation, et au-dessus du niveau des orifices d ' entrée et de sortie du convoyeur dans la cuve, un compartiment dit de recouvrement eu fil à refroidir, et en ce que les compartiments d ' alimentation, de recouvrement et de récupération a insi qu ' une pompe constituent un c ircuit fermé de circulation de préférence rapide, du milieu liquide.1. A device for cooling the wire spread in non-coaxial turns on a conveyor, characterized in that it comprises a tank provided with inlet and outlet openings of a horizontal or substantially horizontal conveyor intended to receive the wire to be cooled , in that said tank comprises below the level of the inlet and outlet orifices of the conveyor in the tank, a preferably central compartment, called a supply compartment equipped with means for supplying coolant medium, and compartments called recovery of the liquid medium., cooling, preferably located upstream and downstream of said feed compartment, and above the level of the inlet and outlet orifices of the conveyor in the tank, a so-called compartment cover in wire to be cooled, and in that the supply, cover and recovery compartments insi that a pump constitute a closed circuit for circulation of p quick reference, liquid medium.
2. Dispositif suivant la revendication 1, caractérisé en ce que le passage de tout ou au moins de la majeure partie du milieu liquida de refroidissement du compartiment d ' alimentation dans le compartiment de recouvrement est réalisé le long des parois latérales de la cuve.2. Device according to claim 1, characterized in that the passage of all or at least the major part of the liquid cooling medium from the supply compartment into the covering compartment is produced along the side walls of the tank.
3. Dispositif de refroidissement du fil selon la revendication 2, caractérisé en ce que le passage du milieu liquide de refroidissement le long des parois de la cuve est assuré au travers d ' ouïes latérales, ménagées dans une paroi séparant le compartiment d ' alimentation et le compartiment de recouvrement.3. A wire cooling device according to claim 2, characterized in that the passage of the coolant medium along the walls of the tank is ensured through lateral openings, formed in a wall separating the supply compartment and the recovery compartment.
4. Dispositif de refroidissement du fil selon l' une ou l' autre des revendications 1 à 3, caractérisé en ce que l' on dispose, en dessous du niveau du convoyeur et au-dessus du compartiment d'alimentation et partiellement au-dessus du compartiment de récupération du milieu liquide, une plaque de séparation dans laquelle on ménage éventuellement des orifices de préférence obturables à l'aide de volets, par exemple de volets à glissières.4. Wire cooling device according to one or other of claims 1 to 3, characterized in that one has, below the level of the conveyor and above the compartment supply and partially above the compartment for recovering the liquid medium, a separation plate in which there are optionally housings preferably closable using shutters, for example sliding shutters.
5. Dispositif suivant l'une ou l'autre des revendications 1 à 4, caractérisé en ce qu'il comprend un système de conditionnement de la température du milieu liquide avec possibilité de collecte, d'évacuation et/ou condensation de la vapeur formée.5. Device according to either of claims 1 to 4, characterized in that it comprises a system for conditioning the temperature of the liquid medium with the possibility of collecting, evacuating and / or condensing the vapor formed .
6. Dispositif suivant la revendication 5, caractérisé en ce que les moyens pour contrôler la température du milieu liquide et démission de vapeur consistent en un système d'addition de milieu liquide froid (par exemple de l'eau), situé de préférence au dessus du dispositif de refroidissement, pouvant comprendre des gicleurs (pulvérisation, brouillard) et un système d'évacuation du milieu liquide capable d'écouler une quantité correspondant au moins à l'apport (par trop-plein, soutirage, etc...).6. Device according to claim 5, characterized in that the means for controlling the temperature of the liquid medium and vapor emission consist of a system for adding cold liquid medium (for example water), preferably located above of the cooling device, which may include sprinklers (spraying, mist) and a system for discharging the liquid medium capable of draining an amount corresponding at least to the supply (by overflow, racking, etc.).
7. Dispositif suivant l'une ou l'autre des revendications 5 et 6, caractérisé en ce que les moyens pour contrôler la température du milieu liquide et l'émission de vapeur comprennent un calculateur programmé en fonction d'un modèle thermique de l'intallation et des différents paramètres représentatifs du processus à contrôler.7. Device according to either of Claims 5 and 6, characterized in that the means for controlling the temperature of the liquid medium and the emission of vapor comprise a computer programmed as a function of a thermal model of the intallation and various parameters representative of the process to be checked.
8. Dispositif suivant l'une ou l'autre des revendications 1 à 7, caractérisé en ce qu'il comprend des moyens pour mettre les dites spires sous atmosphère protectrice, par exemple sous azote.8. Device according to either of claims 1 to 7, characterized in that it comprises means for placing the said turns under a protective atmosphere, for example under nitrogen.
9. Dispositif de refroidissement du fil- suivant l'une ou l'autre des revendications 1 à 8, caractérisé en ce qu'il est équipé de moyens de retenue du milieu liquide, de préférence constitués par des dispositifs d ' injection de liquide disposés sous la surface de circulation du fil et injectant un liquide, de bas en haut, au travers et à contre-courant du milieu liquide. 9. wire cooling device according to either of claims 1 to 8, characterized in that it is equipped with means for retaining the liquid medium, preferably constituted by liquid injection devices arranged under the circulation surface of the wire and injecting a liquid, from bottom to top, through and against the current of the liquid medium.
PCT/BE1982/000018 1981-08-25 1982-08-23 Cooling device for rod wire WO1983000646A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU88253/82A AU8825382A (en) 1981-08-25 1982-08-23 Cooling device for rod wire
BR8207830A BR8207830A (en) 1981-08-25 1982-08-23 COOLING DEVICE FOR MACHINE YARN

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
BE6/47507A BE890079A (en) 1981-08-25 1981-08-25 COOLING DEVICE FOR MACHINE WIRE
BE6/47507 1981-08-25
BE6/47509A BE890102A (en) 1981-08-26 1981-08-26 IMPROVEMENTS IN COOLING DEVICES FOR MACHINE WIRE
BE6/47509 1981-08-26
BE6/47644A BE892891A (en) 1982-04-16 1982-04-16 Cooling device for overlapping loops of wire rod - directs fresh cooling water initially at loop contacting region
BE6/47644820416 1982-04-16

Publications (1)

Publication Number Publication Date
WO1983000646A1 true WO1983000646A1 (en) 1983-03-03

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EP (1) EP0086215A1 (en)
BR (1) BR8207830A (en)
ES (1) ES515214A0 (en)
IT (1) IT1155912B (en)
WO (1) WO1983000646A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007056192A1 (en) 2007-11-21 2009-05-28 Sms Demag Ag Method and device for producing a strip of metal

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1874959A (en) * 1929-04-20 1932-08-30 Bethlehem Steel Corp Rod cooling and water eliminating apparatus
DE1010483B (en) * 1955-03-29 1957-06-19 Krantz H Fa Device for cooling the rolling stock continuously discharged from the rolling mill in cooling beds
FR1543687A (en) * 1966-11-05 1968-10-25 Schloemann Ag Plant for the production of patented steel wire from the heat of rolling
DE2032643A1 (en) * 1969-07-02 1971-01-14 USS Engineers and Consultants, Inc , Pittsburgh Pa (V St A ) Method and apparatus for from deterring steel wire and the like
FR2209086A1 (en) * 1972-11-30 1974-06-28 Kawasaki Heavy Ind Ltd
US4121954A (en) * 1974-09-10 1978-10-24 British Steel Corporation Cooling method for metal articles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1874959A (en) * 1929-04-20 1932-08-30 Bethlehem Steel Corp Rod cooling and water eliminating apparatus
DE1010483B (en) * 1955-03-29 1957-06-19 Krantz H Fa Device for cooling the rolling stock continuously discharged from the rolling mill in cooling beds
FR1543687A (en) * 1966-11-05 1968-10-25 Schloemann Ag Plant for the production of patented steel wire from the heat of rolling
DE2032643A1 (en) * 1969-07-02 1971-01-14 USS Engineers and Consultants, Inc , Pittsburgh Pa (V St A ) Method and apparatus for from deterring steel wire and the like
FR2209086A1 (en) * 1972-11-30 1974-06-28 Kawasaki Heavy Ind Ltd
US4121954A (en) * 1974-09-10 1978-10-24 British Steel Corporation Cooling method for metal articles

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IT8268029A0 (en) 1982-08-23
IT1155912B (en) 1987-01-28
ES8307910A1 (en) 1983-08-01
ES515214A0 (en) 1983-08-01
BR8207830A (en) 1983-09-06
EP0086215A1 (en) 1983-08-24

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