EP0077448A2 - Procédé et dispositif de refroidissement d'articles métalliques chauds et étendus, en particulier des billettes et blooms coulées en continu - Google Patents

Procédé et dispositif de refroidissement d'articles métalliques chauds et étendus, en particulier des billettes et blooms coulées en continu Download PDF

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Publication number
EP0077448A2
EP0077448A2 EP82107627A EP82107627A EP0077448A2 EP 0077448 A2 EP0077448 A2 EP 0077448A2 EP 82107627 A EP82107627 A EP 82107627A EP 82107627 A EP82107627 A EP 82107627A EP 0077448 A2 EP0077448 A2 EP 0077448A2
Authority
EP
European Patent Office
Prior art keywords
cooling
metal material
spray jet
nozzles
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.)
Withdrawn
Application number
EP82107627A
Other languages
German (de)
English (en)
Other versions
EP0077448A3 (fr
Inventor
Dietmar Dipl.-Ing. Zebrowski
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Publication of EP0077448A2 publication Critical patent/EP0077448A2/fr
Publication of EP0077448A3 publication Critical patent/EP0077448A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling

Definitions

  • the invention relates to a cooling method and the associated cooling device for elongated, hot metal material, in particular for continuously cast billets or bloom strands made of steel, in which controlled heat dissipation takes place by spraying on one or more media.
  • Such cooling processes or cooling devices are used for controlled cooling when cooling metal material, such as continuous casting material, rolled products and the like, whereby on the one hand rapid strand shell formation is aimed at to strengthen the strand which is still liquid on the inside and on the other hand certain structural properties are to be achieved.
  • the disadvantage associated with the vertical loading is a rugged cooling of the metal surface.
  • the pulse of the cooling liquid directed perpendicular to the surface of the body to be cooled is markedly greater than the pulse with a cooling liquid flowing parallel to the surface.
  • the two types of spray cooling, the spray nozzle cooling and the laminar cooling differ above all in the way the water impinges.
  • spray nozzle cooling the water jet disintegrates into a large number of small droplets, which, distributed over a larger impact surface, reach the body to be cooled.
  • this technique often results in abrupt cooling of circular or elliptical areas of the metal surface.
  • laminar cooling a closed water jet with a small impact surface also hits the body to be cooled vertically. The impinging water flows parallel to the surface as a channel flow.
  • the present invention is therefore based on the object of creating the conditions for improved cooling.
  • the controllability of the cooling process is to be improved in that the distribution of the cooling medium on the metal surface is made uniform without producing a rugged cooling behavior.
  • the cooling device should also be simplified.
  • the object is achieved in that the cooling medium or the cooling media are applied in spray jets parallel to the longitudinal axis of the metal material and in that each spray jet from the nozzle opening. based on the spray jet speed converted from the pressure energy into speed energy, the metal surface is approximated in such a way that with a higher spray jet speed a smaller angle of inclination and with a lower spray jet speed a larger angle with the metal surface is connected. As a result, the heat dissipation is regulated in such a way that the heat is removed evenly over a larger area than before and can easily be adapted to the dimensions and properties of the metal material.
  • the cooling medium according to the invention reaches the surface of the metal material intensively or less intensively, as desired, without causing abrupt cooling.
  • the method according to the invention can also be advantageously used for sides of the metal material cross section which are to be cooled to different intensities. This advantageous application also arises in particular for curved strands. It goes without saying that suitable, larger distances between the support elements in continuous casting devices are to be provided for the application of the method, while no special measures have to be taken when cooling sheets in rolling mills.
  • the cooling device for carrying out the method according to the invention is then designed such that at least one nozzle is provided per cross-sectional side of the metal material, that the nozzles generating a spray jet are each inclined at a limited angle in relation to the metal material surface in the direction of the longitudinal axis of the metal material, and in that the nozzles arranged essentially in one plane around the metal material cross section each form at least one controlled cooling zone within the metal material length.
  • the inclination of the spray jet against the surface of the metal material is approximately 5 to 60 '.
  • the nozzles are arranged with their spray jet directed against the direction of removal of metal material.
  • cooling device Another embodiment of the cooling device according to the invention is that the nozzles are arranged with their spray jet with an alternating sense of direction, based on the longitudinal axis of the metal goods. This measure serves the targeted formation of regulated and easily controllable cooling zones, in which fixed values can be assumed.
  • each cooling zone is assigned at least one hollow ring which surrounds the metal material cross section and is connected to a supply source for cooling media and to which the nozzles are connected.
  • a supply source for cooling media for cooling media and to which the nozzles are connected.
  • only one hollow ring is required for each cooling zone in order to supply the cooling media. This measure therefore also serves to simplify the cooling device.
  • Another improvement of the cooling device according to the invention results from the fact that a separate supply source is provided for each of the hollow rings. This measure allows several different cooling media to be supplied, for example to carry out the two-component cooling process.
  • the cooling device according to the invention is further developed such that the supply source is designed as a busbar to which the hollow rings are attached. All hollow rings are supplied with a cooling medium by one busbar each.
  • An additional feature of the cooling device according to the invention is further provided in that at least one of the nozzles is associated with guide devices for the emerging spray jet.
  • the guide devices serve to align the spray jets with the metal material to be cooled.
  • the cooling device is designed in such a way that the nozzles are designed for cooling media of different physical states.
  • Such a nozzle can therefore be equipped with devices for droplet formation and / or with such devices for supplying different cooling gases.
  • FIG. 1 The only figure in the drawing shows a plan view of a continuously produced bloom strand, which can be cast both on an arc continuous casting installation, a vertical continuous casting installation, a turning continuous casting installation or on a horizontal continuous casting installation.
  • elongated, hot metal such as. B. rolled sheet, rolled rod profiles, cast slabs or billets cast in the continuous casting process, are cooled.
  • the metal material 1 consists of cast steel and moves from a continuous casting mold, not shown, in the withdrawal direction 2, which is represented by an arrow.
  • the representation of a cast strand made of steel is chosen in such a way that both a vertically drawn cast strand and a horizontally extending cast strand or a bent cast strand can be seen in the drawing.
  • the support elements which are present between the cooling zones 3 and 4, but which are not required in all cases, are no longer shown.
  • one or more hollow rings 5a, 5b are arranged, which in the exemplary embodiment are designed for two cooling media.
  • the hollow ring 5a surrounds the metal material 1, which in each case has two cross-sectional sides 6a and 6b in the case of a rectangular cast strand.
  • one nozzle 7a, 7b and 7c is provided for each cross-sectional side 6a or 6b, each generating a spray jet 8.
  • the spray jets 8 are each directed at a certain flat inclined angle against the metal surface la.
  • the nozzles 7a, 7b, 7c are also aligned parallel to the longitudinal axis 1b of the metal goods.
  • the nozzles 7a, 7b, 7c are additionally aligned per cooling zone 3 and 4 also in the plane of the metal material cross section 6, so that a number of cooling zones 3 and 4 are formed within the metal lengths.
  • the hollow ring 5a is now connected to a pipe bend 9 which is itself connected to one of the nozzles 7a, 7b, 7c.
  • the pipe bend 9 is connected via the hollow ring 5a to the busbar 10, in which a cooling medium 11 (e.g. water) is supplied.
  • a cooling medium 11 e.g. water
  • the hollow ring 5b is connected to the busbar 12, in which a further cooling medium 13 (e.g. air) is fed. Both cooling media 11 and 13 are mixed within the nozzles 7a, 7b, 7c.
  • a further cooling medium 13 e.g. air
  • Both cooling media 11 and 13 are mixed within the nozzles 7a, 7b, 7c.
  • the pressure between 2 and about 10 bar may be, the pressure energy in the nozzles 7a, 7b, 7c is converted into speed energy, according to which the possible range of one of the cooling zones 3 or 4 depends.
  • the spray jets 8 are set more inclined there with a corresponding dimensioning of the nozzle openings than is the case with the spray jet 8 of the nozzle 7c and the cross-sectional side 6b, where a lower inclination of the spray jet 8 is selected.
  • Advantageous angles of inclination are between 5 generallyminimal and 60 * maximum.
  • the nozzles 7a, 7b, 7c with their spray jets 8 lie in the cooling zone 3 against the metal material discharge direction 2 in order to control the outflow of the so-called running water. It is therefore also intended, as shown, to arrange the nozzles 7a, 7b, 7c in the cooling zones 3 and 4 with a direction of direction changing for each cooling zone.
  • Each of the hollow rings 5a, 5b can also be equipped with a separate supply source (e.g. busbars 10, 12), which is not shown, in order to individually regulate the pressure and amount of the cooling medium or the cooling media.
  • a separate supply source e.g. busbars 10, 12
  • the nozzles 7a, 7b, 7c are assigned guiding devices 14a, 14b, 14c etc., which are fastened to the busbars 10 and 12, respectively.
  • the spray jets 8 generated by the nozzles 7c are deposited as shown in the application surfaces 15 which, apart from their ends, form essentially rectangular surfaces, as a result of which very uniform cooling of the metal material 1 can be achieved.
  • the setting of the angle of inclination between 5 'and 60' to the metal surface la and, of course, pressures and amounts of the cooling media 11 and 13 are parameters for setting the cooling intensity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Continuous Casting (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
EP82107627A 1981-10-17 1982-08-20 Procédé et dispositif de refroidissement d'articles métalliques chauds et étendus, en particulier des billettes et blooms coulées en continu Withdrawn EP0077448A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3141269A DE3141269C2 (de) 1981-10-17 1981-10-17 Kühlverfahren und Kühlvorrichtung für langgestrecktes heißes Metallgut, insbesondere für stranggegossene Knüppel- bzw. Vorblockstränge aus Stahl
DE3141269 1981-10-17

Publications (2)

Publication Number Publication Date
EP0077448A2 true EP0077448A2 (fr) 1983-04-27
EP0077448A3 EP0077448A3 (fr) 1984-07-18

Family

ID=6144311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82107627A Withdrawn EP0077448A3 (fr) 1981-10-17 1982-08-20 Procédé et dispositif de refroidissement d'articles métalliques chauds et étendus, en particulier des billettes et blooms coulées en continu

Country Status (6)

Country Link
EP (1) EP0077448A3 (fr)
JP (1) JPS5884650A (fr)
BR (1) BR8206017A (fr)
DE (1) DE3141269C2 (fr)
ES (1) ES8306335A1 (fr)
ZA (1) ZA826955B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410187B (de) * 2001-02-20 2003-02-25 Voest Alpine Ind Anlagen Kühlvorrichtung für ein heisses langgestrecktes metallgut
CN120479959A (zh) * 2025-07-03 2025-08-15 河北临泰电子科技有限公司 一种键合铜丝的拉丝装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2541213B2 (ja) * 1987-04-03 1996-10-09 日本鋼管株式会社 形鋼の製造装置
DD291710A5 (de) * 1990-01-29 1991-07-11 Eisenhuettenkombinat Ost,De Verfahren und vorrichtung zur geregelten abkuehlung von breitflacherzeugnissen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1283442B (de) * 1965-07-24 1968-11-21 Vaw Ver Aluminium Werke Ag Verfahren zum waagerechten Stranggiessen von Aluminiumbaendern von weniger als 30 mm Dicke
GB1323757A (en) * 1969-12-01 1973-07-18 Nippon Kokan Kk Method and apparatus for cooling hot metals
US3918467A (en) * 1972-01-21 1975-11-11 Siderurgie Fse Inst Rech Apparatus for the cooling of a continuously cast product
DE2444613B1 (de) * 1974-09-16 1976-01-29 Mannesmann Ag Verfahren zum aufspruehen eines kuehlmittels beim stranggiessen von stahl- brammen, sowie vorrichtung zur durchfuehrung des verfahrens
US4043384A (en) * 1976-10-13 1977-08-23 Georgetown Texas Steel Corporation Spray apparatus for continuous casting machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410187B (de) * 2001-02-20 2003-02-25 Voest Alpine Ind Anlagen Kühlvorrichtung für ein heisses langgestrecktes metallgut
DE10203240B4 (de) * 2001-02-20 2007-09-06 Voest-Alpine Industrieanlagenbau Ges.M.B.H. & Co. Kühlvorrichtung für ein heisses langgestrecktes Metallgut
DE10203240C5 (de) * 2001-02-20 2015-04-16 Siemens Vai Metals Technologies Gmbh Kühlvorrichtung für ein heisses langgestrecktes Metallgut
CN120479959A (zh) * 2025-07-03 2025-08-15 河北临泰电子科技有限公司 一种键合铜丝的拉丝装置

Also Published As

Publication number Publication date
DE3141269A1 (de) 1983-05-19
DE3141269C2 (de) 1984-01-05
EP0077448A3 (fr) 1984-07-18
JPS5884650A (ja) 1983-05-20
ES515871A0 (es) 1983-06-01
ES8306335A1 (es) 1983-06-01
BR8206017A (pt) 1983-09-13
ZA826955B (en) 1983-07-27

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Inventor name: ZEBROWSKI, DIETMAR, DIPL.-ING.