EP0297077B1 - Cooling device for moving metal products - Google Patents
Cooling device for moving metal products Download PDFInfo
- Publication number
- EP0297077B1 EP0297077B1 EP19880870111 EP88870111A EP0297077B1 EP 0297077 B1 EP0297077 B1 EP 0297077B1 EP 19880870111 EP19880870111 EP 19880870111 EP 88870111 A EP88870111 A EP 88870111A EP 0297077 B1 EP0297077 B1 EP 0297077B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compartment
- compartments
- front wall
- caisson
- metal product
- 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
-
- 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
Definitions
- the present invention relates to a device for cooling a moving metal product. It applies particularly, but not exclusively, to the cooling of wide flat products, in particular heavy plates.
- a device of this type is already known from patent BE-A-900,784.
- This known device comprises two transverse perforated boxes, disposed respectively above and below the metal product and distributing the coolant in a uniform form according to the width of this metal product.
- the present invention provides a simple way to remedy this drawback, by an appropriate modification of the known device mentioned above.
- a device for cooling a moving metal product which comprises an upper box and a lower box arranged respectively above and below the trajectory of said metal product and oriented transversely with respect to said trajectory, said boxes being provided, in a front wall, with holes for the passage of a coolant in the direction of said metal product, in which the bottom box is divided into at least two substantially parallel compartments oriented in the longitudinal direction of said lower box, said division into compartments being produced by at least one partition substantially parallel to the longitudinal direction of said lower box and forming an angle with said front wall, and each of said compartments having a part of said passage orifices and comprising means for supplying coolant, is characterized in that said partition delimits on the one hand with a part of said front wall a first compartment, called internal compartment, which is connected to a primary source of agent re refrigerant and on the other hand with another part of said front wall and with the outer wall of said lower box a second compartment, said outer compartment, which surrounds said first compartment and which is connected to a
- said lower box has a longitudinal plane of symmetry, and the inner compartment, respectively the outer compartment, are each arranged symmetrically with respect to said longitudinal plane of symmetry.
- said first and second sources of refrigerant are constituted by a single source, which supplies said two compartments separately, possibly under different pressures.
- a lower box forming part of a cooling device is generally designated by the reference numeral 1. It is mounted between two transport rollers 2 and 3, shown diagrammatically in phantom, which symbolize a bank of rollers on which moves, in the direction of arrow A, a metallic product 4 to be cooled.
- the box is shown in cross section, the cutting plane being therefore parallel to the direction of movement of the metal product 4.
- the box 1 has a longitudinal plane of symmetry, which is a vertical plane whose trace 5 is shown in phantom.
- the box 1 rests on the frame of the roller bench by means of suitable supports.
- the lower box 1 has an outer wall 6, having the general shape of a U, which is closed by a front wall 7 parallel to the direction of movement of the product 4.
- a partition inner 8 which also has the general shape of a U and which is also closed by the front wall 7.
- the outer wall 6 and the partition 8, both in the shape of a U are each arranged symmetrically relative to the plane 5.
- the partition 8 delimits on the one hand, with a part of the front wall 7, an interior compartment 9 and on the other hand, with another part of the front wall 7 and with the outer wall 6, an outer compartment 10 which symmetrically surrounds the inner compartment 9.
- the front wall 7 is pierced with a plurality of orifices intended to allow the passage of the refrigerant in the direction of the metallic product 4.
- a part of these orifices in this case those which are designated by the reference 12, open out in the internal compartment 9, while other orifices, identified 11, open into the external compartment 10.
- these orifices are distributed in an appropriate manner in the front wall 7 to ensure distribution desired, preferably a uniform distribution, of the refrigerant through one and / or the other of the compartments 9 and 10.
- the outer compartment 10 is equipped with supply lines 13 from which the refrigerant spreads in said compartment 10 according to the arrows B to reach the orifices 11.
- the interior compartment 9 is equipped with supply lines 14, which pass through sealingly the external compartment 10, and from which the refrigerant circulates according to the arrows C by turning the jet breaker 15, in the direction of the orifices 12.
- the jet breaker 15 is intended to ensure a uniform distribution of the pressure and the flow of coolant in all of the orifices 12.
- the supply lines 13 and 14 are also distributed appropriately along the length of the lower box 1.
- Such a box can operate in different ways, depending on the specific flow rate of refrigerant, necessary to ensure the desired cooling of the metal product 4.
- specific flow rate is meant here the quantity, generally the volume of refrigerant per unit of surface of the product to be cooled.
- the refrigerant used is preferably water or an aqueous liquid.
- the quantity of heat to be extracted is greater the greater the temperature drop to be ensured and the greater the thickness of the product. It is therefore necessary to apply a high specific flow rate of the refrigerant.
- the two compartments 9 and 10 are simultaneously supplied with refrigerant, and the box 1 then functions as a lower box of the known type.
- the invention is obviously not limited to feeding one or other of the exterior 10 and interior 9 compartments.
- the cooling device according to the invention thus offers a flexibility of operation that the known devices did not have.
- the invention is however not limited to the embodiment which has just been described and illustrated, but it also extends to the various possible variants coming within the scope of the following claims.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Description
La présente invention concerne un dispositif pour le refroidissement d'un produit métallique en mouvement. Elle s'applique particulièrement, mais pas exclusivement, au refroidissement des produits plats de grande largeur, notamment des tôles fortes.The present invention relates to a device for cooling a moving metal product. It applies particularly, but not exclusively, to the cooling of wide flat products, in particular heavy plates.
Un dispositif de ce type est déjà connu par le brevet BE-A-900.784. Ce dispositif connu comporte deux caissons transversaux perforés, disposés respectivement au-dessus et en dessous du produit métallique et distribuant l'agent réfrigérant de manière uni forme selon la largeur de ce produit métallique.A device of this type is already known from patent BE-A-900,784. This known device comprises two transverse perforated boxes, disposed respectively above and below the metal product and distributing the coolant in a uniform form according to the width of this metal product.
On connaît également, par le brevet US-A-3.687.145, un dispositif de trempe de tôles conforme au préambule de la revendication 1 qui comporte des caissons inférieur et supérieur divisés en deux compartiments parallèles successifs.Also known, from US-A-3,687,145, a sheet quenching device according to the preamble of claim 1 which comprises upper and lower boxes divided into two successive parallel compartments.
On a cependant constaté que, dans les cas où le débit spécifique d'agent réfrigérant est faible, une quantité appréciable d'agent réfrigérant n'atteint pas la face inférieure du produit; le refroidissement de celui-ci n'est alors pas assuré de façon satisfaisante.However, it has been found that, in cases where the specific flow rate of refrigerant is low, an appreciable quantity of refrigerant does not reach the underside of the product; cooling thereof is then not satisfactorily ensured.
La présente invention propose un moyen simple de remédier à cet inconvénient, par une modification appropriée du dispositif connu rappelé plus haut.The present invention provides a simple way to remedy this drawback, by an appropriate modification of the known device mentioned above.
Conformément à la présente invention, un dispositif pour le refroidissement d'un produit métallique en mouvement, qui comporte un caisson supérieur et un caisson inférieur disposés respectivement au-dessus et en dessous de la trajectoire dudit produit métallique et orientés transversalement par rapport à ladite trajectoire, lesdits caissons étant pourvus, dans une paroi frontale, d'orifices de passage d'un agent réfrigérant en direction dudit produit métallique, dans lequel le caisson inférieur est divisé en au moins deux compartiments sensiblement parallèles orientés suivant la direction longitudinale dudit caisson inférieur, ladite division en compartiments étant réalisée par au moins une cloison sensiblement parallèle à la direction longitudinale dudit caisson inférieur et formant un angle avec ladite paroi frontale, et chacun desdits compartiments présentant une partie desdits orifices de passage et comportant des moyens d'alimentation en agent réfrigérant, est caractérisé en ce que ladite cloison délimite d'une part avec une partie de ladite paroi frontale un premier compartiment, dit compartiment intérieur, qui est relié à une première source d'agent réfrigérant et d'autre part avec une autre partie de ladite paroi frontale et avec la paroi extérieure dudit caisson inférieur un second compartiment, dit compartiment extérieur, qui entoure ledit premier compartiment et qui est relié à une seconde source d'agent réfrigérant.According to the present invention, a device for cooling a moving metal product, which comprises an upper box and a lower box arranged respectively above and below the trajectory of said metal product and oriented transversely with respect to said trajectory, said boxes being provided, in a front wall, with holes for the passage of a coolant in the direction of said metal product, in which the bottom box is divided into at least two substantially parallel compartments oriented in the longitudinal direction of said lower box, said division into compartments being produced by at least one partition substantially parallel to the longitudinal direction of said lower box and forming an angle with said front wall, and each of said compartments having a part of said passage orifices and comprising means for supplying coolant, is characterized in that said partition delimits on the one hand with a part of said front wall a first compartment, called internal compartment, which is connected to a primary source of agent re refrigerant and on the other hand with another part of said front wall and with the outer wall of said lower box a second compartment, said outer compartment, which surrounds said first compartment and which is connected to a second source of refrigerant.
D'une façon avantageuse, ledit caisson inférieur possède un plan de symétrie longitudinal, et le compartiment intérieur, respectivement le compartiment extérieur, sont chacun agencés de façon symétrique par rapport audit plan de symétrie longitudinal.Advantageously, said lower box has a longitudinal plane of symmetry, and the inner compartment, respectively the outer compartment, are each arranged symmetrically with respect to said longitudinal plane of symmetry.
Par ailleurs, il est intéressant que lesdites première et seconde sources d'agent réfrigérant soient constituées par une source unique, qui alimente séparément lesdits deux compartiments, éventuellement sous des pressions différentes.Furthermore, it is advantageous that said first and second sources of refrigerant are constituted by a single source, which supplies said two compartments separately, possibly under different pressures.
D'autres particularités intéressantes de l'invention apparaîtront à la lecture de la description qui va suivre, donnée à titre de simple exemple, d'une réalisation préférée du dispositif de l'invention. Cette description se réfère au dessin annexé, dont la figure unique montre la section transversale d'un caisson inférieur divisé en deux compartiments de section symétrique.Other interesting features of the invention will appear on reading the description which follows, given by way of simple example, of a preferred embodiment of the device of the invention. This description refers to the attached drawing, the single figure of which shows the cross section of a lower box divided into two compartments of symmetrical section.
Dans cette figure unique, un caisson inférieur faisant partie d'un dispositif de refroidissement est globalement désigné par le repère numérique 1. Il est monté entre deux rouleaux de transport 2 et 3, schématisés en trait mixte, qui symbolisent un banc de rouleaux sur lequel se déplace, dans le sens de la flèche A, un produit métallique 4 à refroidir. Le caisson est représenté en coupe transversale, le plan de coupe étant de ce fait parallèle à la direction de déplacement du produit métallique 4. Dans la configuration représentée ici, le caisson 1 possède un plan de symétrie longitudinal, qui est un plan vertical dont la trace 5 est représentée en trait mixte. Le caisson 1 repose sur la charpente du banc de rouleaux par l'intermédiaire de supports appropriés.In this single figure, a lower box forming part of a cooling device is generally designated by the reference numeral 1. It is mounted between two
Le caisson inférieur 1 comporte une paroi extérieure 6, ayant la forme générale d'un U, qui est fermée par une paroi frontale 7 parallèle à la direction de déplacement du produit 4. A l'intérieur de la paroi extérieure 6 est disposée une cloison intérieure 8, qui présente également la forme générale d'un U et qui est également fermée par la paroi frontale 7. Comme le montre la figure, la paroi extérieure 6 et la cloison 8, toutes deux en forme de U, sont chacune agencées symétriquement par rapport au plan 5. Dans cette réalisation, la cloison 8 délimite d'une part, avec une partie de la paroi frontale 7, un compartiment intérieur 9 et d'autre part, avec une autre partie de la paroi frontale 7 et avec la paroi extérieure 6, un compartiment extérieur 10 qui entoure symétriquement le compartiment intérieur 9.The lower box 1 has an outer wall 6, having the general shape of a U, which is closed by a front wall 7 parallel to the direction of movement of the
La paroi frontale 7 est percée d'une pluralité d'orifices destinés à permettre le passage de l'agent réfrigérant en direction du produit métallique 4. Une partie de ces orifices, en l'occurrence ceux qui sont désignés par le repère 12, débouchent dans le compartiment intérieur 9, tandis que d'autres orifices, repérés 11, débouchent dans le compartiment extérieur 10. Bien entendu, ces orifices sont distribués de façon appropriée dans la paroi frontale 7 pour assurer la répartition désirée, de préférence une répartition uniforme, de l'agent réfrigérant par l'un et/ou l'autre des compartiments 9 et 10.The front wall 7 is pierced with a plurality of orifices intended to allow the passage of the refrigerant in the direction of the
A l'arrière des deux compartiments 9 et 10, c'est-à-dire ici dans les parois constituant respectivement les âmes des U 6 et 8, sont prévus des moyens de raccordement à des sources d'agent réfrigérant, non représentées.At the rear of the two
Le compartiment extérieur 10 est équipé de conduites d'alimentation 13 à partir desquelles l'agent réfrigérant se répand dans ledit compartiment 10 suivant les flèches B pour gagner les orifices 11. Le compartiment intérieur 9 est équipé de conduites d'alimentation 14, qui traversent de façon étanche le compartiment extérieur 10, et à partir desquelles l'agent réfrigérant circule suivant les flèches C en cntournant le brise-jet 15, en direction des orifices 12. Le brise-jet 15 est destiné à assurer une répartition uniforme de la pression et du débit d'agent réfrigérant dans l'ensemble des orifices 12.The
Les conduites d'alimentation 13 et 14 sont également réparties de façon appropriée suivant la longueur du caisson inférieur 1.The
Un tel caisson peut fonctionner de différentes manières, en fonction du débit spécifique d'agent réfrigérant, nécessaire pour assurer le refroidissement désiré du produit métallique 4. Par débit spécifique, on entend ici la quantité, généralement le volume d'agent réfrigérant par unité de surface du produit à refroidir. Il faut en outre comprendre que l'agent réfrigérant utilisé est de préférence l'eau ou un liquide aqueux.Such a box can operate in different ways, depending on the specific flow rate of refrigerant, necessary to ensure the desired cooling of the
Il peut être nécessaire d'abaisser fortement la température d'un produit métallique. Dans ce cas, la quantité de chaleur à extraire est d'autant plus grande que la chute de température à assurer est importante et que l'épaisseur du produit est forte. Il convient dès lors d'appliquer un débit spécifique élevé de l'agent réfrigérant. A cet effet, on alimente simultanément les deux compartiments 9 et 10 en agent réfrigérant, et le caisson 1 fonctionne alors comme un caisson inférieur du type connu.It may be necessary to significantly lower the temperature of a metal product. In this case, the quantity of heat to be extracted is greater the greater the temperature drop to be ensured and the greater the thickness of the product. It is therefore necessary to apply a high specific flow rate of the refrigerant. To this end, the two
Il arrive cependant aussi que la chute de température à assurer, ainsi qu'éventuellement l'épaisseur du produit 4, ne nécessitent l'extraction que d'une quantité de chaleur relativement faible. Il en résulte une diminution parfois importante du débit spécifique de l'agent réfrigérant, et le risque, avec un caisson classique, qu'une partie de l'agent réfrigérant n'atteigne pas le produit à refroidir.However, it also happens that the temperature drop to be ensured, as well as possibly the thickness of the
Dans ce cas, il est possible, avec un caisson inférieur conforme à l'invention, de n'alimenter qu'un seul compartiment, afin de concentrer le débit spécifique faible sur un plus petit nombre d'orifices. Le débit de chaque orifice est ainsi augmenté et l'agent réfrigérant atteint plus aisément le produit métallique 4 à refroidir.In this case, it is possible, with a lower box according to the invention, to supply only one compartment, in order to concentrate the low specific flow rate on a smaller number of orifices. The flow rate of each orifice is thus increased and the refrigerant more easily reaches the
L'invention n'est évidemment pas limitée à l'alimentation de l'un ou l'autre des compartiments extérieur 10 et intérieur 9.The invention is obviously not limited to feeding one or other of the exterior 10 and interior 9 compartments.
Il s'est cependant avéré avantageux d'alimenter de préférence le compartiment extérieur 10, qui délivre l'agent réfrigérant dans les deux zones de bord du caisson 1, alors que le compartiment intérieur 9 n'est pas alimenté. Il en résulte un avantage hydraulique, dû à un meilleur écoulement de l'agent réfrigérant, et un avantage métallurgique dû à une meilleure répartition du refroidissement suivant la longueur du produit métallique.However, it has proved advantageous to preferably supply the
Le dispositif de refroîdissement conforme à l'invention offre ainsi une souplesse de fonctionnement que ne présentaient pas les dispositifs connus. L'invention n'est cependant pas limitée au mode de réalisation qui vient d'être décrit et illustré, mais elle s'étend également aux différentes variantes possibles entrant dans le cadre des revendications suivantes.The cooling device according to the invention thus offers a flexibility of operation that the known devices did not have. The invention is however not limited to the embodiment which has just been described and illustrated, but it also extends to the various possible variants coming within the scope of the following claims.
Claims (6)
- Device for cooling a moving metal product, which comprises an upper caisson and a lower caisson which are arranged, respectively, above and below the trajectory of the said metal product and are oriented transversely with respect to the said trajectory, the said caissons being provided, in a front wall, with orifices for the passage of a coolant agent in the direction of the said metal product, in which the said lower caisson (1) is divided into at least two substantially parallel compartments (9, 10) oriented in the longitudinal direction of the said lower caisson, the said division into compartments being produced by means of at least one partition (8) substantially parallel to the longitudinal, direction of the said lower caisson and forming an angle with the said front wall (7), and each of the said compartments having a part of the said passage orifices (11, 12) and comprising means (13, 14) for supplying coolant agent, characterised, in that the said partition (8) delimits, on the one hand, with a part of the said front wall (7), a first compartment (9), known as the inner compartment, which is connected to a first source of coolant agent (14), and, on the other hand, with another part of the said front wall (7) and with the outer wall (6) of the said lower caisson, a second compartment (10), known as the outer compartment, which surrounds the said first compartment (9) and which is connected to a second source of coolant agent (13).
- Device according to Claim 1, characterised in that the said inner caisson has a longitudinal plane of symmetry (5) and in that the inner compartment (9) and the outer compartment (10) are, respectively, each arranged symmetrically with respect to the said longitudinal plane of symmetry.
- Device according to either of Claims 1 and 2, characterised in that the means for supplying the said inner compartment traverse the said outer compartment in a leaktight manner.
- Device according to Claim 3, characterised in that the means for supplying the said inner compartment comprise an anti-splash plug.
- Device according to any one of Claims 1 to 4, characterised in that the means for supplying the said compartments are distributed along the length of the said lower caisson.
- Device according to any one of Claims 1 to 5, characterised in that the various compartments are supplied separately from a common source of coolant agent.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE8700720 | 1987-06-26 | ||
| BE8700720A BE1000674A6 (en) | 1987-06-26 | 1987-06-26 | Device for cooling a metal product in motion. |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0297077A2 EP0297077A2 (en) | 1988-12-28 |
| EP0297077A3 EP0297077A3 (en) | 1989-10-04 |
| EP0297077B1 true EP0297077B1 (en) | 1993-06-09 |
Family
ID=3882739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19880870111 Expired - Lifetime EP0297077B1 (en) | 1987-06-26 | 1988-06-22 | Cooling device for moving metal products |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0297077B1 (en) |
| BE (1) | BE1000674A6 (en) |
| DE (1) | DE3881585D1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9358597B2 (en) | 2006-12-27 | 2016-06-07 | Siemens Plc | Apparatus and method for controlled cooling |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3687145A (en) * | 1970-06-26 | 1972-08-29 | Inland Steel Co | Quench system |
| US3941611A (en) * | 1974-11-04 | 1976-03-02 | Wean United, Inc. | Apparatus for cooling strip like material |
| BE851381A (en) * | 1977-02-11 | 1977-05-31 | Centre Rech Metallurgique | IMPROVEMENTS TO COOLING DEVICES FOR METAL LAMINATED PRODUCTS |
| DE3147878A1 (en) * | 1981-12-03 | 1983-06-16 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | Apparatus for cooling flat rolled stock |
| BE900784A (en) * | 1984-10-09 | 1985-04-09 | Centre Rech Metallurgique | DEVICE FOR COOLING A MOVING METAL PRODUCT AND INSTALLATION COMPRISING THE APPLICATION. |
| JPS62118914A (en) * | 1985-11-19 | 1987-05-30 | Kawasaki Steel Corp | Cooling device for hot metallic plate |
| BE904177A (en) * | 1986-02-05 | 1986-08-05 | Centre Rech Metallurgique | DEVICE FOR COOLING A MOVING METAL PRODUCT. |
-
1987
- 1987-06-26 BE BE8700720A patent/BE1000674A6/en not_active IP Right Cessation
-
1988
- 1988-06-22 DE DE8888870111T patent/DE3881585D1/en not_active Expired - Lifetime
- 1988-06-22 EP EP19880870111 patent/EP0297077B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9358597B2 (en) | 2006-12-27 | 2016-06-07 | Siemens Plc | Apparatus and method for controlled cooling |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3881585D1 (en) | 1993-07-15 |
| BE1000674A6 (en) | 1989-03-07 |
| EP0297077A3 (en) | 1989-10-04 |
| EP0297077A2 (en) | 1988-12-28 |
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