EP0328505B1 - Device for cooling metal rod or wire - Google Patents
Device for cooling metal rod or wire Download PDFInfo
- Publication number
- EP0328505B1 EP0328505B1 EP89870003A EP89870003A EP0328505B1 EP 0328505 B1 EP0328505 B1 EP 0328505B1 EP 89870003 A EP89870003 A EP 89870003A EP 89870003 A EP89870003 A EP 89870003A EP 0328505 B1 EP0328505 B1 EP 0328505B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- series
- holes
- tube
- installation according
- cooling
- 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.)
- Expired - Lifetime
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
-
- 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
- B21B45/0224—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for wire, rods, rounds, bars
-
- 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
Definitions
- the present invention relates to an installation for cooling a bar or a metal wire, disposed at the outlet of a rolling or drawing installation or following a heat treatment as well as to its use.
- Known cooling systems have in common the fact of circulating water around the product, parallel to it. They differ from each other in the way of supplying the cooling fluid, namely water or a water / air mixture, possibly under pressure in a tube in which the product to be cooled also circulates. Mention may also be made of the central radial supply, the cooling tube being able to be embedded in a cooling liquid, for example water or to be arranged in a jacket with cooling liquid, the evacuation being always essentially axial.
- the present invention aims to provide an installation for cooling a bar or a metal wire, intended to be arranged at the outlet of a rolling or wire drawing installation or following a heat treatment installation, which does not have the drawbacks of known cooling installations.
- the cooling installation comprises a horizontal tube in which the wire or the bar to be cooled circulates and which has a first series of holes distributed over the length of said tube, this first series of holes being intended for the supply. in cooling fluid and connected exclusively to means allowing this supply, and a second series of holes distributed over the length of said tube intended for the evacuation of the cooling fluid and connected exclusively to means allowing this evacuation.
- the installation has only two series of holes, the second series of holes being arranged essentially opposite the first series of holes.
- the cooling fluid is advantageously supplied from below, it that is to say through the first series of holes arranged at the bottom of said tube.
- the section of the cooling tube is notably reduced for a given type of product to be cooled, compared to the state of the art. Indeed, it is advantageous to use a cooling tube whose internal diameter is at most equal to 1.5 x the diameter of the wire to be cooled.
- the holes of a series of holes are arranged opposite the holes of the other series.
- the holes of a series are distributed on a generatrix of the surface of the tube.
- the number of holes in the second series is lower or higher than the number of holes in the first series.
- the cooling installation comprises a single tube.
- the cooling fluid is advantageously water, but it is also possible to provide a water / air mixture and / or any other fluid or mixture deposited on the product.
- An advantage of the present invention lies in the fact that the product to be cooled is in continuous contact with cold water, the exchanges are therefore the best possible at all points and the water line is the shortest possible. Even using a low pressure water supply, the installation according to the present invention allows very tight guidance of the product to be cooled in the tube, thus avoiding the risk of buckling while making the most of the thrust it undergoes. .
- cooling tube 1 according to the present invention.
- Said tube 1 is open at both ends 3 and 5 and is intended for the passage of a wire or a metal bar to be cooled (not shown).
- Said tube is provided with a first series of holes 7 distributed over its entire length, and with a second series of holes 9 also distributed over the entire length of tube 1.
- the holes 9 are arranged opposite the holes 7 and said first series of holes has a number of holes substantially equal to that of said second series (9).
- a supply manifold 11 is arranged at the bottom of the tube 1, for a uniformly distributed supply of the cooling fluid, in this case water, over the entire length of the tube 1 through the holes 7 of said first series.
- the tube 1 fitted with a supply manifold can also be housed in a suitable reservoir 13 intended to recover the fluid discharged through the holes 9 of said second series. It is obvious that the fluid thus collected can be recycled adequately.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
La présente invention est relative à une installation de refroidissement d'une barre ou d'un fil métallique, disposée à la sortie d'une installation de laminage ou de tréfilage ou à la suite d'un traitement thermique ainsi qu'à son utilisation.The present invention relates to an installation for cooling a bar or a metal wire, disposed at the outlet of a rolling or drawing installation or following a heat treatment as well as to its use.
Différentes installations de l'état de la technique sont connues par les documents FR-A- 2 231 440, US-A- 2 747 587, GB-A- 2 021 998 et JP-A- 52 14 507.Different installations of the state of the art are known from the documents FR-A-2 231 440, US-A- 2 747 587, GB-A- 2 021 998 and JP-A- 52 14 507.
Les installations de refroidissement connues ont en commun le fait de faire circuler l'eau autour du produit, parallèlement à celui-ci. Elles diffèrent les unes des autres par la façon d'amener le fluide de refroidissement, à savoir de l'eau ou un mélange eau/air, éventuellement sous pression dans un tube où circule également le produit à refroidir. On peut aussi citer l'alimentation radiale centrale, le tube de refroidissement pouvant être noyé dans un liquide de refroidissement, par exemple de l'eau ou être agencé dans une chemise à liquide de refroidissement, l'évacuation étant toujours essentiellement axiale.Known cooling systems have in common the fact of circulating water around the product, parallel to it. They differ from each other in the way of supplying the cooling fluid, namely water or a water / air mixture, possibly under pressure in a tube in which the product to be cooled also circulates. Mention may also be made of the central radial supply, the cooling tube being able to be embedded in a cooling liquid, for example water or to be arranged in a jacket with cooling liquid, the evacuation being always essentially axial.
Toutefois, la circulation de l'eau autour du produit à refroidir limite la section de passage de l'eau à la différence entre la section du tube et celle du produit. Pour obtenir un débit d'eau suffisant - à moins d'utiliser des pressions d'eau extrêmement élevées - on doit donc garder un rapport diamètre tube/diamètre produit élevé. Dans le cas de produits peu rigides circulant à grande vitesse, il y a un risque élevé pour que le produit flambe sous l'effet de forces de freinage exercées par l'eau.However, the circulation of water around the product to be cooled limits the section of water passage to the difference between the section of the tube and that of the product. To obtain a sufficient water flow - unless using extremely high water pressures - one must therefore keep a high tube diameter / product diameter ratio. In the case of weak products circulating at high speed, there is a high risk that the product will buckle under the effect of braking forces exerted by water.
D'autre part, l'eau circulant parallèlement au produit se réchauffe à son contact et les échanges deviennent de moins en moins bons au fur et à mesure que l'on progresse vers l'extrémité du tube.On the other hand, the water circulating parallel to the product heats up on contact and the exchanges become less and less good as one progresses towards the end of the tube.
Dans le cas des systèmes eau-air, l'expérience a montré que la diminution de la force de freinage par unité de longueur de la ligne d'eau est plus que compensée par l'augmentation de longueur rendue nécessaire par la détérioration du coefficient d'échange thermique entre le produit et le mélange eau/air par rapport à l'eau seule.In the case of water-air systems, experience has shown that the reduction of the braking force by unit length of the water line is more than offset by the increase in length made necessary by the deterioration of the heat exchange coefficient between the product and the water / air mixture compared to water alone.
La présente invention vise à fournir une installation de refroidissement d'une barre ou d'un fil métallique, destinée à être agencée à la sortie d'une installation de laminage ou de tréfilage ou à la suite d'une installation de traitement thermique, qui ne présente pas les inconvénients des installations de refroidissement connues.The present invention aims to provide an installation for cooling a bar or a metal wire, intended to be arranged at the outlet of a rolling or wire drawing installation or following a heat treatment installation, which does not have the drawbacks of known cooling installations.
Selon la présente invention, l'installation de refroidissement comporte un tube horizontal dans lequel circule le fil ou la barre à refroidir et qui présente une première série de trous répartis sur la longueur dudit tube, cette première série de trous étant destinée à l'alimentation en fluide de refroidissement et reliée exclusivement à des moyens permettant cette alimentation, et une deuxième série de trous répartis sur la longueur dudit tube destinée à l'évacuation du fluide de refroidissement et reliée exclusivement à des moyens permettant cette évacuation. L'installation présente deux séries de trous seulement, la deuxième série de trous étant disposée essentiellement en face de la première série de trous.According to the present invention, the cooling installation comprises a horizontal tube in which the wire or the bar to be cooled circulates and which has a first series of holes distributed over the length of said tube, this first series of holes being intended for the supply. in cooling fluid and connected exclusively to means allowing this supply, and a second series of holes distributed over the length of said tube intended for the evacuation of the cooling fluid and connected exclusively to means allowing this evacuation. The installation has only two series of holes, the second series of holes being arranged essentially opposite the first series of holes.
En vue d'utiliser au maximum la poussée exercée sur la barre ou le fil par le laminoir disposé en amont par exemple, tout en évitant le flambage de ladite barre ou dudit fil, le fluide de refroidissement est avantageusement alimenté par le bas, c'est-à-dire au travers de la première série de trous agencée à la partie inférieure dudit tube.In order to make maximum use of the thrust exerted on the bar or the wire by the rolling mill placed upstream for example, while avoiding the buckling of said bar or said wire, the cooling fluid is advantageously supplied from below, it that is to say through the first series of holes arranged at the bottom of said tube.
On constate que l'échange thermique est sensiblement amélioré et que, par conséquent, la longueur de la ligne d'eau est sensiblement réduite.It can be seen that the heat exchange is significantly improved and that, consequently, the length of the water line is significantly reduced.
Grâce à l'agencement de l'installation conforme à la présente invention, la section du tube de refroidissement est notablement réduite pour un type de produit à refroidir donné, face à l'état de la technique. En effet, on fait avantageusement appel à un tube de refroidissement dont le diamètre intérieur est au plus égal à 1,5 x le diamètre du fil à refroidir.Thanks to the arrangement of the installation according to the present invention, the section of the cooling tube is notably reduced for a given type of product to be cooled, compared to the state of the art. Indeed, it is advantageous to use a cooling tube whose internal diameter is at most equal to 1.5 x the diameter of the wire to be cooled.
Selon une forme d'exécution préférée, les trous d'une série de trous sont disposés en face des trous de l'autre série.According to a preferred embodiment, the holes of a series of holes are arranged opposite the holes of the other series.
En variante, on peut toutefois prévoir un certain décalage dans le sens longitudinal des trous de la première série par rapport à ceux de la deuxième série, les trous d'une série restant essentiellement en face des trous de l'autre série.Alternatively, one can however provide a certain offset in the longitudinal direction of the holes of the first series relative to those of the second series, the holes of one series remaining essentially opposite the holes of the other series.
Selon une forme d'exécution, les trous d'une série sont répartis sur une génératrice de la surface du tube. On peut toutefois également prévoir une répartition selon une courbe adéquate.According to one embodiment, the holes of a series are distributed on a generatrix of the surface of the tube. However, it is also possible to provide a distribution along an adequate curve.
On peut également prévoir que le nombre de trous de la deuxième série est moins élevé ou plus élevé que le nombre de trous de la première série.It can also be provided that the number of holes in the second series is lower or higher than the number of holes in the first series.
De préférence, l'installation de refroidissement comporte un tube unique.Preferably, the cooling installation comprises a single tube.
Le fluide de refroidissement est avantageusement de l'eau, mais on peut également prévoir un mélange eau/air et/ou tout autre fluide ou mélange déposé sur le produit.The cooling fluid is advantageously water, but it is also possible to provide a water / air mixture and / or any other fluid or mixture deposited on the product.
Un avantage de la présente invention réside dans le fait que le produit à refroidir est en contact en continu avec de l'eau froide, les échanges sont donc les meilleurs possibles en tout point et la ligne d'eau est la plus courte possible. Même en utilisant une alimentation en eau à basse pression, l'installation conforme à la présente invention permet un guidage très serré du produit à refroidir dans le tube, évitant ainsi le risque de flambage tout en profitant au maximum de la poussée qu'il subit.An advantage of the present invention lies in the fact that the product to be cooled is in continuous contact with cold water, the exchanges are therefore the best possible at all points and the water line is the shortest possible. Even using a low pressure water supply, the installation according to the present invention allows very tight guidance of the product to be cooled in the tube, thus avoiding the risk of buckling while making the most of the thrust it undergoes. .
En outre, les examens de structure du produit refroidi montrent que le refroidissement est homogène toute la circonférence.In addition, structural examinations of the cooled product show that the cooling is uniform all the way around.
L'invention est décrite plus en détail, en référence aux dessins annexés dans lesquels :
- la figure 1 est une représentation en coupe longitudinale partielle de l'installation conforme à la présente invention; et
- la figure 2 est une vue en coupe transversale de ladite installation.
- Figure 1 is a partial longitudinal sectional representation of the installation according to the present invention; and
- Figure 2 is a cross-sectional view of said installation.
Dans les figures, on a représenté un tube de refroidissement 1 conforme à la présente invention. Ledit tube 1 est ouvert aux deux extrémités 3 et 5 et est destiné au passage d'un fil ou d'une barre métallique à refroidir (non représenté).In the figures, there is shown a cooling tube 1 according to the present invention. Said tube 1 is open at both
Ledit tube est muni d'une première série de trous 7 répartis sur toute sa longueur, et d'une deuxième série de trous 9 également répartis sur toute la longueur du tube 1.Said tube is provided with a first series of
Comme représenté, les trous 9 sont disposés en face des trous 7 et ladite première série de trous comporte un nombre de trous sensiblement égal à celui de ladite deuxième série (9).As shown, the holes 9 are arranged opposite the
Avantageusement, une nourrice d'alimentation 11 est agencée à la partie inférieure du tube 1, en vue d'une alimentation uniformément répartie du fluide de refroidissement, de l'eau en l'occurence, sur toute la longueur du tube 1 au travers des trous 7 de ladite première série.Advantageously, a
Le tube 1 équipé d'une nourrice d'alimentation peut encore être logé dans un réservoir adéquat 13 destiné à récupérer le fluide évacué par les trous 9 de ladite deuxième série. Il est bien évident que le fluide ainsi recueilli peut être recyclé de manière adéquate.The tube 1 fitted with a supply manifold can also be housed in a
Il est bien entendu que la présente invention ne se limite pas à la forme d'exécution préférée donnée à titre d'exemple, mais qu'elle s'étend au cadre défini par les revendications annexées. Ainsi par exemple, on peut utiliser à titre de fluide de refroidissement, un mélange d'eau et d'air et/ou tout autre fluide ou mélange déposé sur le produit traversant l'installation.It is understood that the present invention is not limited to the preferred embodiment given by way of example, but that it extends to the scope defined by the appended claims. Thus, for example, a mixture of water and air and / or any other fluid or mixture deposited on the product passing through the installation can be used as cooling fluid.
Claims (11)
- Installation for cooling a bar or a metal wire comprising a horizontal tube in which circulates the wire or the bar to be cooled and which has a first series of holes distributed over the length of the said tube, this first series of holes being intended for the supply with cooling fluid, and connected exclusively to means permitting this supply, and a second series of holes distributed over the length of the said tube, intended for the discharge of the cooling fluid and connected exclusively to means permitting this discharge, characterised in that it has two series of holes only, the second series of holes (9) being disposed essentially facing the first series of holes (7).
- Installation according to Claim 1, characterised in that the said first series of holes (7) intended for the supply of the cooling fluid is arranged at the lower part of the said tube (1).
- Installation according to Claim 1 or 2, characterised in that the holes of the first series (7) are disposed approximately facing the holes of the second series (9).
- Installation according to Claim 1 or 2, characterised in that the holes of the first series (7) are slightly offset in the longitudinal direction with respect to the holes of the second series (9) while remaining essentially facing the latter.
- Installation according to any one of the preceding claims, characterised in that the holes of one series are distributed on a generatrix of the surface of the tube (1).
- Installation according to any one of Claims 1 to 4, characterised in that the holes of one series are distributed along a curve on the surface of the tube (1).
- Installation according to any one of the preceding claims, characterised in that the number of holes of the first series (7) is equal to, greater than or less than that of the second series (9).
- Installation according to any one of the preceding claims, characterised in that the lower part of the tube (1) is fitted with a feed pipe (11).
- Installation according to any one of the preceding claims, characterised in that the tube (1) fitted with a feed pipe (11) is housed in a recovery tank (13).
- Installation according to any one of the preceding claims, characterised in that it comprises a single tube (1).
- Use of the installation according to any one of Claims 1 to 10 for cooling a bar or a metal wire with water or a water/air mixture as cooling fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT89870003T ATE88220T1 (en) | 1988-02-11 | 1989-01-04 | DEVICE FOR COOLING METALLIC RODS OR WIRE. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE8800182 | 1988-02-11 | ||
| BE8800182A BE1001433A6 (en) | 1988-02-11 | 1988-02-11 | Installation for cooling a bar or wire. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0328505A1 EP0328505A1 (en) | 1989-08-16 |
| EP0328505B1 true EP0328505B1 (en) | 1993-04-14 |
Family
ID=3883271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89870003A Expired - Lifetime EP0328505B1 (en) | 1988-02-11 | 1989-01-04 | Device for cooling metal rod or wire |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0328505B1 (en) |
| AT (1) | ATE88220T1 (en) |
| BE (1) | BE1001433A6 (en) |
| DE (1) | DE68905941D1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE81919C (en) * | ||||
| US2565855A (en) * | 1947-11-19 | 1951-08-28 | Selas Corp Of America | Plural station quenching device for elongated objects |
| US2747587A (en) * | 1950-03-13 | 1956-05-29 | United States Steel Corp | Apparatus for quenching and reeling rods |
| NL163142C (en) * | 1973-06-04 | 1980-08-15 | Hoogovens Ijmuiden Bv | DEVICE FOR COOLING WARM-ROLLED BAR MATERIAL WITH WATER. |
| LU79722A1 (en) * | 1978-05-26 | 1979-06-13 | Arbed | IMPROVEMENTS TO COOLING SYSTEMS FOR METAL LAMINATED PRODUCTS |
-
1988
- 1988-02-11 BE BE8800182A patent/BE1001433A6/en not_active IP Right Cessation
-
1989
- 1989-01-04 EP EP89870003A patent/EP0328505B1/en not_active Expired - Lifetime
- 1989-01-04 AT AT89870003T patent/ATE88220T1/en not_active IP Right Cessation
- 1989-01-04 DE DE8989870003T patent/DE68905941D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| BE1001433A6 (en) | 1989-10-31 |
| EP0328505A1 (en) | 1989-08-16 |
| ATE88220T1 (en) | 1993-04-15 |
| DE68905941D1 (en) | 1993-05-19 |
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