EP0001770B1 - Procédé et dispositif de refroidissement pour brames - Google Patents

Procédé et dispositif de refroidissement pour brames Download PDF

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Publication number
EP0001770B1
EP0001770B1 EP78101138A EP78101138A EP0001770B1 EP 0001770 B1 EP0001770 B1 EP 0001770B1 EP 78101138 A EP78101138 A EP 78101138A EP 78101138 A EP78101138 A EP 78101138A EP 0001770 B1 EP0001770 B1 EP 0001770B1
Authority
EP
European Patent Office
Prior art keywords
billets
water jets
spray
billet
cooling device
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
Application number
EP78101138A
Other languages
German (de)
English (en)
Other versions
EP0001770A1 (fr
Inventor
Horst Ganseuer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemag GmbH
Original Assignee
Siemag Transplan GmbH
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
Application filed by Siemag Transplan GmbH filed Critical Siemag Transplan GmbH
Publication of EP0001770A1 publication Critical patent/EP0001770A1/fr
Application granted granted Critical
Publication of EP0001770B1 publication Critical patent/EP0001770B1/fr
Expired legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to a method and a device for cooling billets of square or rectangular cross-section, which are moved by means of a transport device, with water, in which the billets are simultaneously acted on from opposite sides by divergent, directed water jets.
  • This so-called spray cooling has the essential advantage over immersion cooling that the rolling stock or the continuous casting can be charged with precisely defined amounts of water on the way via the predetermined cooling section, so that the cooling process can easily be optimally adjusted.
  • a method and a device for cooling a single strand of rolling stock also belong to the prior art, in which or in which several, for example six, diverging beams arranged uniformly in the circumferential direction are directed onto the peripheral surfaces of the rolling stock .
  • the cooling water jets only hit limited peripheral areas of the roll train, while the intermediate peripheral areas are only wetted by the water flowing off.
  • several, for example two, cooling zones arranged one behind the other in the direction of passage of the roll strand are provided, within which the water jets hit the circumferential surface of the roll strand offset in the circumferential direction.
  • the purpose of the invention is that the known types of spray cooling for rolling or. Eliminating continuous casting billiards disadvantages.
  • this problem is essentially solved in that the billets are acted upon by water jets along or approximately along their cross-sectional diagonals and at the same time and uniformly on all the contours.
  • the billets are guided with their longitudinal axes at the height of the common bisector of the spray angle through the crossing plane of both water jets.
  • the billets are continuously guided in the direction of their longitudinal axis and with a predetermined diagonal plane in the crossing plane of the two water jets.
  • the billets can also be transported transversely to their longitudinal axis and with a predetermined diagonal plane, only in two phases lying in the crossing plane of the two water jets.
  • This cooling process can be used particularly where the billets, after they have left the roller mill or the continuous casting installation, are transported on a cross conveyor.
  • an essential feature of the method is that a distance is maintained between a plurality of billets moving in a direction parallel to one another. This distance should be adjusted to the cross-sectional dimension of the billet. Only in this way can it be ensured that all side surfaces of the billets are wetted with spray water simultaneously and in a targeted manner.
  • the billets can be guided horizontally past the water jets. In some cases, however, they can also be easily transported vertically hanging past the water jets.
  • a cooling device for carrying out the method according to the invention which is equipped with a transport device and spray nozzles for water arranged on opposite sides of the billet passage area, is mainly characterized in that the spray width of the spray nozzles is essentially matched to the total width of the billet surfaces facing them and the transport plane the transport device is at an acute angle or parallel to a certain diagonal plane of the billet cross section.
  • a further feature of the invention is that the spray width of the spray nozzles can be changed. According to the invention, this can be done in an advantageous manner in that, in the case of a diverging spray angle, the spray width can be varied by changing the distance of the spray nozzles from the stick passage area.
  • the transport device moving the billets in the direction of their longitudinal axis can be a roller table. It is particularly advantageous if the transport device has several billet conveyor tracks next to one another and each of the same spray nozzles is assigned.
  • the transport device which moves the billets transversely to their longitudinal axis can be a drag chain, walking beam or rake conveyor to which rows of spray nozzles are assigned over a width corresponding to the maximum billet length.
  • the spray nozzles of each row of nozzles can be operated individually or independently of one another, so that the operating range of the cooling device can be matched to the length of the billet to be cooled without difficulty.
  • billets 2 are transported lying on one of their side surfaces in the direction of their longitudinal axis on a roller table.
  • spray nozzles 4 and 5 are mounted in pipes 6 and 7 lying parallel to the transport direction, which are supplied with water by pipelines.
  • the arrangement of the spray nozzles 4 and 5 is drawn here so that their main spray axis each has a position inclined by 45 ° relative to the transport plane 3-3 and cuts the edge of the stick 2 running on the roller table 1 that faces them.
  • the inclination of the jet will be set somewhat differently than drawn. It is obvious that it must be ensured that, for example, more cooling water must be supplied to the lower surface of the stick 2 in order to achieve uniform cooling than the vertical side surfaces. Therefore one will z. B. arrange the spray nozzle 5 at a slightly larger angle than 45 ° against the transport plane 3-3 inclined.
  • the spray cooling device differs from that according to FIGS. 1 and 2 essentially in that the billets 2 are transported on the roller table 1 in a skewed position.
  • their distance 9 from the transport plane is set such that each of the spray nozzles 4 and 5 fully covers two side surfaces of the stick 2 which are at right angles to one another. Uniform cooling of all side surfaces of the stick 2 is thus ensured.
  • FIGS. 5 and 6 show a spray cooling device for billets 12, which are moved transversely to their longitudinal axis and lying on one of their side surfaces, for example step by step over the transport plane 13-13 with a walking beam transport device.
  • a plurality of rows of spray nozzles 14 are arranged one behind the other in the transport direction above the transport plane 13-13, while there is a corresponding number of rows of spray nozzles 15 below the transport plane 13-13.
  • the spray nozzles 14 and 15 of each row are aligned so that their main spray axis is at an adjustable angle to the transport plane 13-13.
  • the spray cooling device according to FIGS. 7 and 8 differs from that according to FIGS. 5 and 6 essentially only in that the billets 12 are transported in a spike edge position on the transport device 11, which is designed, for example, as a rake cooling bed.
  • the billets 12 are transported step by step in the direction transverse to their longitudinal axis and, after each transport step, pass between a different set of spray nozzle rows 14 and 15.
  • the spray cooling devices according to FIGS. 1 to 4 can, if necessary, also be designed without further notice so that at the same time several billets 2 lying next to one another and transported in the direction of their longitudinal axis can be treated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Continuous Casting (AREA)

Claims (15)

1. Procédé pour refroidir à l'eau des billettes de section carrée ou rectangulaire déplacées au moyen d'un dispositif de transport et arrosées simultanément sur des faces opposées par des jets d'eau divergents dirigés les uns vers les autres, ce procédé étant remarquable en ce que les billettes (2; 12) sont aspergées par les jets d'eau (4, 5; 14, 15) le long, ou sensiblement le long, des diagonales de leur section ainsi que, simultanément et uniformément, sur toutes les surfaces de leur pourtour.
2. Procédé selon la revendication 1, remarquable en ce que les axes longitudinaux des billettes (2; 12) se trouve à la hauteur de la bissectrice commune aux angles des jets (8; 18) lorsqu'elles traversent le plan d'intersection des deux jets (4, 5; 14, 15).
3. Procédé selon la revendication 1 ou 2, remarquable en ce que les billettes (2) sont déplacées dans la direction de leur axe longitudinal, avec un plan diagonal prédéterminé continuellement dans le plan d'intersection des deux jets (4, 5).
4. Procédé selon la revendication 1 ou 2, remarquable en ce que les billettes (12) sont transportées couchées en travers de leur axe longitudinal et avec un plan diagonal prédéterminé passant seulement temporairement dans le plan d'intersection des deux jets d' eau (14, 15).
5. Procédé selon l'une quelconque des revendications précédentes, remarquable en ce que, de façon connu en soi, un intervalle est maintenu entre plusieurs billettés déplacées pendant que leurs axes longitudinaux sont parallèles entre eux, et en ce que cet intervalle (20) correspond sensiblement a la dimension de leur section.
6. Precédé selon l'une quelconque des revendications précédentes, remarkquable en ce que les billettes (2; 12) sont couchées horizontalement lorsqu'elles passent devant les jets d'eau (4, 5; 14, 15).
7. Procédé selon l'une quelconque des revendications 1, 2, 4, et 5, remarquable en ce que les billettes sont transportées suspendues verticalement entre les jets (14, 15).
8. Procédé selon l'une quelconque des revendications précédentes, remarquable en ce que les billettes (2; 12) sont transportées soit dans une position sur angle par rapport aux jets d'eau (4, 5; 14, 15), soit à plat sur une de leurs faces, les jets étant alors dirigés en direction des arêtes des billettes (2; 12).
9. Dispositif refroidisseur pour mettre en oeuvre le procédé selon l'une quelconque des revendications précédentes, comportant un dispositif de transport et des buses d'arrosage à l'eau disposées de part et d'autre du champ parcouru par les billettes, ce dispositif étant remarquable en ce que la largeur d'aspersion des buses d'aspersion (4, 5; 14, 15) correspond sensiblement à la largeur totale des faces des billettes tournées vers ces buses, et en ce que le plan de transport (3-3); 13-13) de ce dispositif est soit incliné d'un angle aigu sur un plan diagonal déterminé de la section des billettes, soit.parallèle à ce plan.
10. Dispositif selon la revendication 9, remarquable en ce que la largeur d' aspersion des buses (4, 5; 14, 15) est règlable.
11. Dispositif refroidisseur selon la revendication 9 ou 10, remarquable en ce que la largeur d'aspersion des buses étant divergente, elle peut être modifiée en faisant varier la distance (9; 19) entre les buses et le champ (3; 13) traversé par les billettes.
12. Dispositif refroidisseur selon l'une quelconque des revendications 9 à 11, remarquable en e que le dispositif de transport (1) qui déplace les billettes (2) dans la direction de leur axe longitudinal est une table à rouleaux.
13. Dispositif refroidisseur selon la revendication 12, remarquable en ce que le dispositif de transport (1) comporte plusieurs travées de transport juxtion 12, remarquable en ce que le dispositif de transport (1) comporte plusieurs travées de transport juxtaposées, à chacune desquelles sont affectées des buses d'aspersion (4, 5).
14. Dispositif refroidisseur selon l'une quelconque des revendications 9 à 11, remarquable en ce que le dispositif (1) qui transporte les billettes (12) dans une direction orientée en travers de leur axe longitudinal est un transporteur à chaîne traînée, un transporteur à longerons mobiles ou un transporteur à râteaux, des rangées de buses d'aspersion (14, 15) étant affectées à ce transporteur sur une largeur correspondant à la longueur maximale des billettes.
15. Dispositif refroidisseur selon l'une quelconque des revendications 9 à 14, remarquable en ce que le dispositif de transport (1; 11) est muni de reposoirs pour recevoir les billettes (2; 12) sur angle.
EP78101138A 1977-11-09 1978-10-13 Procédé et dispositif de refroidissement pour brames Expired EP0001770B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2750085A DE2750085C2 (de) 1977-11-09 1977-11-09 Verfahren und Vorrichtung zum Kühlen von Knüppeln
DE2750085 1977-11-09

Publications (2)

Publication Number Publication Date
EP0001770A1 EP0001770A1 (fr) 1979-05-16
EP0001770B1 true EP0001770B1 (fr) 1980-09-03

Family

ID=6023343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78101138A Expired EP0001770B1 (fr) 1977-11-09 1978-10-13 Procédé et dispositif de refroidissement pour brames

Country Status (5)

Country Link
EP (1) EP0001770B1 (fr)
JP (1) JPS5475414A (fr)
AT (1) AT364749B (fr)
DE (2) DE2750085C2 (fr)
IT (1) IT1100053B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4140930A1 (de) * 1991-12-09 1993-06-17 Mannesmann Ag Vorrichtung zum kuehlen laengsnahtgeschweisster rohre

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005007320U1 (de) * 2005-05-09 2005-07-07 Günther Böhler GmbH Vorrichtung zum abrasiven Strahlen von Werkstücken

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE558690A (fr) *
FR2104964A1 (en) * 1970-09-10 1972-04-28 Ts Nauchno Issle Reduction of cooling of continuous castings - in secondary cooling zo
JPS4872012A (fr) * 1971-12-29 1973-09-28
US3889507A (en) * 1973-11-15 1975-06-17 Bethlehem Steel Corp Apparatus for cooling a steel member while being rolled on a continuous hot-rolling mill
DE2361305A1 (de) * 1973-12-08 1975-06-12 Kessler & Luch Kg Vorrichtung zum kuehlen von metallprofilen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4140930A1 (de) * 1991-12-09 1993-06-17 Mannesmann Ag Vorrichtung zum kuehlen laengsnahtgeschweisster rohre

Also Published As

Publication number Publication date
JPS5475414A (en) 1979-06-16
DE2750085C2 (de) 1979-12-13
ATA787478A (de) 1981-04-15
IT1100053B (it) 1985-09-28
IT7829399A0 (it) 1978-11-03
DE2860151D1 (en) 1980-12-11
AT364749B (de) 1981-11-10
DE2750085B1 (de) 1979-04-26
EP0001770A1 (fr) 1979-05-16

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