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EP0144029B1 - Tuyau de refroidissement pour section de refroidissement pour refroidir rapidement du fil laminé ou du matériel à barres - Google Patents

Tuyau de refroidissement pour section de refroidissement pour refroidir rapidement du fil laminé ou du matériel à barres Download PDF

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Publication number
EP0144029B1
EP0144029B1 EP84113898A EP84113898A EP0144029B1 EP 0144029 B1 EP0144029 B1 EP 0144029B1 EP 84113898 A EP84113898 A EP 84113898A EP 84113898 A EP84113898 A EP 84113898A EP 0144029 B1 EP0144029 B1 EP 0144029B1
Authority
EP
European Patent Office
Prior art keywords
cooling
cooling pipe
set forth
gripping elements
pipe arrangement
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
EP84113898A
Other languages
German (de)
English (en)
Other versions
EP0144029A1 (fr
Inventor
Herbert Rothe
Karl Haase
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.)
ROTHE, HERBERT
Original Assignee
ROTHE Herbert
Badische Stahlwerke 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 ROTHE Herbert, Badische Stahlwerke AG filed Critical ROTHE Herbert
Priority to AT84113898T priority Critical patent/ATE28135T1/de
Publication of EP0144029A1 publication Critical patent/EP0144029A1/fr
Application granted granted Critical
Publication of EP0144029B1 publication Critical patent/EP0144029B1/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
    • B21B45/0224—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for wire, rods, rounds, bars

Definitions

  • the invention relates to a cooling tube according to the preamble of claim 1.
  • Cooling tubes of this type are used to cool the rolling stock in or behind a rolling mill. On the one hand, it is intended to ensure that the temperatures of the rolling stock within the rolling mill do not exceed certain limit values, so that there is no impermissible decarburization or carbide precipitation. On the other hand, in order to set a certain structure of the rolling stock, the final rolling temperature on the finishing pass must be set exactly. Finally, certain mechanical properties of the rolling stock are to be adjusted by targeted cooling after the last rolling stand.
  • a cooling tube is known from two spaced-apart guide sleeves, between which a plurality of rods are arranged convergingly from one guide sleeve to the other on a pitch circle around the longitudinal axis of the cooling tube at a distance from one another. Slot-like through openings for the cooling liquid are thus formed between the individual rods.
  • a pipe section which is pushed over the two guide sleeves and sealed with respect to this by means of sealing elements forms an annular space around the rods, which is connected by channels to a connection for the coolant.
  • the cooling liquid can be introduced tangentially, so that the cooling liquid rotates around the rolling stock and the turbulence of the cooling liquid improves the heat transfer.
  • the invention has for its object to provide a cooling tube that allows adjustment of the coolant throughput with a simple structural design and thus an adaptation to the cooling capacity prescribed for the cooling tube in question.
  • the solution according to the invention is characterized by a particularly simple construction.
  • a helical spring is clamped, the turns of which are normally kept at a distance from one another, so that a helical gap results as a passage opening for the cooling liquid.
  • a tension spring can also be used with suitable clamping between the tensioning elements, a compression spring is preferably used.
  • the cross section of the wire from which the coil spring is formed is preferably round.
  • the inside diameter of the helical spring is sufficiently large to prevent contact with the rolling stock on the one hand and to create a sufficient space for the access of the cooling liquid around the rolling stock.
  • the two clamping elements are fastened in a tube section which at the same time delimits an annular space around the helical spring, into which a channel for the supply of the coolant opens.
  • the cooling tube thus only contains a coil spring and a pipe section provided with a water connection.
  • the clamping elements can be designed identically.
  • the cooling tube thus has a surprisingly simple structure. Nevertheless, with these elements, simply by changing the clamping length between the clamping elements, the coil spring can be compressed or pulled apart to a greater or lesser extent and the resulting change in the gap width between the turns of the coolant throughput can be adapted to the desired cooling capacity.
  • This principle not only allows simple adjustment of the coolant throughput when assembling the cooling tube, but also opens up the possibility with simple constructional means of being able to individually change the coolant throughput in a cooling tube built into the cooling section and to be able to adapt it to the desired cooling capacity.
  • a threaded connection is particularly suitable for this, be it directly between at least one of the tensioning elements and the pipe section, or via an adjusting ring.
  • the gap width between the turns of the coil spring need not be constant.
  • the gap width on the entry side of the rolling stock into the spring can be larger than on the exit side.
  • the coil spring is wound with a different pitch.
  • the coil spring consists of at least one row arrangement two coil springs with different pitch and possibly different spring constant is replaced.
  • Units each consisting of a helical spring clamped between two clamping elements, which are arranged one behind the other in a pipe section, can each be connected by a rigid sleeve, which ensures smooth guidance of the coolant flow entrained with the rolling stock.
  • the cooling characteristic can be changed within wide limits.
  • the coolant throughput through the helical gap between the turns of the coil spring is generally set so that it is less than the possible throughput through the channel opening into the annular space. This is to ensure that the annular space is completely filled with cooling liquid and the rolling stock is cooled evenly over its entire circumference.
  • the adjustability of the coolant throughput also includes the case that the helical spring is compressed until adjacent windings are in contact with one another and thus the coolant throughput is completely interrupted.
  • the cooling tube 1 shown in Fig. 1 is part of a cooling section which comprises a plurality of such cooling tubes.
  • the cooling tube 1 contains two clamping elements 3 of identical design in a tube section 2, between the facing end faces 4 and 5 of which a helical spring 6 is clamped.
  • the two clamping elements 3 are fixed in the pipe section 2 by means of screws 7.
  • the left end face 4 of the tensioning elements 3 each has an annular recess 8 and the right end face has ring shoulders 9 and 10.
  • the coil spring 6 is seated with its left end on the inner annular shoulder 10 of the left clamping element 3 and with its right end in the annular recess 8 of the right clamping element 3.
  • Each clamping element has two annular grooves 11.
  • a sealing element 12 is provided in each of the annular grooves 11 adjacent to the helical spring 6.
  • the two clamping elements 3 are designed as guide sleeves for the rolling stock and have a funnel 13 on the input side for this purpose.
  • the inside diameter of the coil spring 6 is sufficiently larger than the inside diameter 14 of the clamping elements 3, so that it is ensured that the rolling stock does not come into contact with the coil spring.
  • a sufficiently large annular space 15 must remain between the helical spring 6 and the inner wall of the tubular section 2 in order to ensure a radial inflow of coolant into the interior of the helical spring which is substantially uniform over the circumference of the helical spring.
  • the annular space 15 is connected via a channel 16 to a connection for the cooling liquid.
  • the channel is formed by a circular opening 17 in the pipe section 2 and a connecting pipe 18. 1 flows through the channel 16 from bottom to top (arrow 24) into the annular space 15 and from there through the helical gap 19 formed by the coil spring 6 into the interior of the coil spring 6.
  • the rolling stock passes through the cooling tube 1 from left to right (arrow 25).
  • the inner diameter 14 of the sleeve-shaped clamping elements 3 is approximately 1.5 to 3 times as large as the diameter of the rolling stock.
  • the distance between the rolling stock and the inside of the coil spring 6 corresponds approximately to the distance between the outside of the coil spring and the inside wall of the pipe section 2.
  • the production of the cooling tube shown in Fig. 1 is very simple. Sections of standardized commercially available pipes can be used as pipe sections. After drilling the opening 17, the connecting pipe 18 is welded on. Then one of the two clamping elements 3 already equipped with a seal 12 is inserted into the pipe section 2 and fixed with screws 7. Then the coil spring 6 is inserted and finally the other clamping element 3 and this is fixed with screws.
  • the length of the helical spring 6 and the two clamping elements 3 is chosen so that the end face 4 of the left clamping element and the annular shoulder 9 of the right clamping element are flush with the pipe section 2.
  • the flow cross section through the helical gap 19 is smaller than the flow cross section of the channel 16, so that it is ensured that the annular space 15 is always filled with coolant in the operating state.
  • the sleeve-shaped tensioning elements 3 and the coil spring 6 are arranged coaxially within the tube section 2, so that the coil spring 6 is approximately the same distance from the inner wall of the tube cut 2 has.
  • the helical spring 6 it can be expedient to offset the central axes of the tensioning elements 3 and the helical spring 6 somewhat parallel with respect to the central axis of the pipe section 2 in order to obtain an annular space 15 with a different cross section over the circumference.
  • the coil spring only needs to be wound with changing pitch.
  • the helical spring 6 it is also possible for the helical spring 6 to be conically tapered from one end to the other end.
  • the channel 16 opens centrally into the annular space 15, ie. H. the central axis of the connecting pipe 18 intersects the central axis of the pipe section 2, which also represents the central axis of the clamping elements 3 and the coil spring 6.
  • Fig. 3 shows a modified embodiment, in which the channel 16 opens eccentrically into the annular space 15.
  • the central axis of the connecting pipe 18a is offset in parallel in comparison to the embodiment of Fig. 2, i. H. it no longer intersects the center line of the pipe section 2a.
  • a tangential flow is generated within the annular space 15, which results in a rotation of the cooling liquid around the rolling stock through the gap 19 between the turns of the helical spring.
  • This cooling therefore takes place with greater turbulence than in the example according to FIG. 2.
  • FIG. 4 shows a cooling pipe in which two units, each consisting of a helical spring 6 clamped between two clamping elements 3, are arranged one behind the other in a pipe section 2b and the two units are connected by a rigid sleeve 20.
  • Each of the coil springs is assigned an annular space 15 and a channel 16 for the supply of the coolant.
  • the rigid sleeve 20 is clamped in the same way as the coil springs 6, namely between the inner shoulder 10 of one clamping element 3 and the annular recess 8 of the next clamping element 3.
  • the rigid sleeve 20 creates a compensating distance, the length of which depends on the length of the rigid sleeve 20 can be determined.
  • another element can be used which is permeable to the cooling liquid, and a channel opening into the annular space around this element can be provided, through which the cooling liquid supplied via the channel 16 is at least partially removed again.
  • Fig. 5 shows an embodiment of the invention, which makes it possible not only in the manufacture, but also in the use of the cooling tube in a simple manner to adjust the flow cross section of the cooling liquid through the helical gap 19 of the coil spring 6 and to adapt it to the required conditions.
  • the clamping length 21 between two clamping elements 3 can be changed. 5 corresponds essentially to that of FIG. 1.
  • the right clamping element 3 is mounted in a longitudinally displaceable manner and lies with its end face facing away from the coil spring 6, in this case with the outer annular shoulder 9, on an adjusting ring 22 on, which is connected by a thread 23 to the pipe section 2c.
  • the adjusting ring 22 is provided with an external thread and screwed into an internal thread on the right side of the pipe section 2c.
  • the helical spring 6 can be compressed to a greater or lesser extent, thereby reducing the gap width 19 to a value of 0 within wide limits.
  • the adjusting ring 22 is thus a simple means for adjusting and also for switching off the cooling liquid supplied to the rolling stock within the cooling tube.
  • the threaded connection could also be provided between the right clamping element 3 and the pipe section 2c. In this case, the right clamping element would have to be rotated to change the clamping length 21.
  • coolants are suitable as coolants; gaseous coolants could also be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Metal Rolling (AREA)

Claims (11)

1. Tube de refroidissement d'un parcours de refroidissement destiné au refroidissement rapide d'un matériau laminé en fil ou en barre (produit laminé), comprenant une section tubulaire (2) dans laquelle sont disposés deux éléments de serrage (3) en forme de douille et entre lesquels est serrée une pièce rapportée ayant une fente (19) servant d'ouverture de passage à l'agent de refroidissement, ainsi qu'une chambre annulaire (15) qui est délimitée par la pièce rapportée et par une partie de la paroi intérieure de la section tubulaire (2) et qui communique par un canal (16) avec un raccord pour l'agent de refroidissement, caractérisé en ce que la pièce rapportée est constituée en ressort hélicoïdal (6) et les éléments de serrage (3) sont fixés à la section tubulaire (2).
2. Tube de refroidissement suivant la revendication 1, caractérisé en ce que les éléments de serrage (3) forment en même temps le dispositif de guidage du produit laminé.
3. Tube de refroidissement suivant la revendication 1 ou 2, caractérisé en ce que la longueur libre (21) entre les éléments de serrage (3) peut être modifiée.
4. Tube de refroidissement suivant la revendication 3, caractérisé en ce que l'un au moins des éléments de serrage (3) est vissé par un filetage (23) sur la section tubulaire (2c) .
5. Tube de refroidissement suivant la revendication 3 ou 4, caractérisé en ce que l'un au moins des éléments de serrage (3) est monté coulissant longitudinalement et s'applique, par son côté frontal (5) éloigné du ressort hélicoïdal (6), sur un anneau de serrage (22) qui est vissé sur la section tubulaire (2c) par un filetage (23).
6. Tube de refroidissement suivant l'une des revendications 1 à 5, caractérisé en ce que les deux éléments de serrage (3) ont une constitution identique.
7. Tube de refroidissement suivant l'une des revendications 1 à 6, caractérisé en ce que le canal (16) pour l'agent de refroidissement est disposé transversalement à l'axe longitudinal du tube de refroidissement (2).
8. Tube de refroidissement suivant l'une des revendications 1 à 7, caractérisé en ce que le canal (16) pour l'agent de refroidissement débouche de manière excentrée dans la chambre annulaire (15).
9. Tube de refroidissement suivant l'une des revendications 1 à 8, caractérisé en ce qu'au moins deux ressorts hélicoïdaux (6) serrés respectivement entre des éléments de serrage (3) sont disposés l'un derrière l'autre dans une section tubulaire (2b) et un canal (16) pour l'agent de refroidissement débouche dans chaque chambre annulaire (15) autour des ressorts hélicoïdaux (6).
10. Tube de refroidissement suivant la revendication 9, caractérisé en ce qu'au moins deux unités constituées respectivement d'un ressort hélicoïdal (6) serré entre deux éléments de serrage (3) sont disposées l'une derrière l'autre dans une section tubulaire (2b) et les unités sont reliées par une douille rigide (20).
11. Tube de refroidissement suivant l'une des revendications 1 à 10, caractérisé en ce que le ressort hélicoïdal (6) est constitué en ayant une largeur de fente entre les spires qui se modifie.
EP84113898A 1983-11-23 1984-11-16 Tuyau de refroidissement pour section de refroidissement pour refroidir rapidement du fil laminé ou du matériel à barres Expired EP0144029B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84113898T ATE28135T1 (de) 1983-11-23 1984-11-16 Kuehlrohr fuer eine kuehlstrecke zum schnellen abkuehlen von walzdraht- oder stabmaterial.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3342322 1983-11-23
DE3342322A DE3342322C2 (de) 1983-11-23 1983-11-23 Kühlrohr für eine Kühlstrecke zum schnellen Abkühlen von Walzgut

Publications (2)

Publication Number Publication Date
EP0144029A1 EP0144029A1 (fr) 1985-06-12
EP0144029B1 true EP0144029B1 (fr) 1987-07-08

Family

ID=6215042

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84113898A Expired EP0144029B1 (fr) 1983-11-23 1984-11-16 Tuyau de refroidissement pour section de refroidissement pour refroidir rapidement du fil laminé ou du matériel à barres

Country Status (5)

Country Link
US (1) US4629165A (fr)
EP (1) EP0144029B1 (fr)
JP (1) JPS60133912A (fr)
AT (1) ATE28135T1 (fr)
DE (1) DE3342322C2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4201295A1 (de) * 1992-01-15 1993-07-22 Thaelmann Schwermaschbau Veb Vorrichtung zum fuehren und kuehlen von walzgut in drahtwalzbloecken
US5329779A (en) * 1993-02-09 1994-07-19 C.V.G. Siderurgica Del Orinoco, C.A. Method and apparatus for cooling workpieces
US5447293A (en) * 1994-07-22 1995-09-05 Clarke; Beresford N. Method and apparatus for quenching heat treated objects
US5518222A (en) * 1994-10-28 1996-05-21 Tuscaloosa Steel Corporation Nozzle arrangement for use in a cooling zone of rolling mill
DE19503544A1 (de) * 1995-02-03 1996-08-08 Achenbach Buschhuetten Gmbh Walzenkühl- und/oder Schmiervorrichtung für Kaltbandwalzwerke, insbesondere Feinbandwalzwerke
DE102020205249B3 (de) * 2020-04-24 2021-10-07 Kocks Technik Gmbh & Co Kg Vorrichtung zum Kühlen von Langprodukten
CN112553441A (zh) * 2020-12-09 2021-03-26 山东南山铝业股份有限公司 一种航空铝合金高精度时效处理炉

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2726473C2 (de) * 1977-06-11 1979-08-30 Stahlwerke Peine-Salzgitter Ag, 3150 Peine KUhlmitteUelt- und Walzgutführungseinrichtung für die intermittierende Kühlung von Walzgut, insbesondere von Draht, Feineisen u.dgl
DE2822582C3 (de) * 1978-05-24 1981-07-30 Stahlwerke Peine-Salzgitter Ag, 3150 Peine Kühlmittelleit- und Walzgutführungseinrichtung für die intermittierende Kühlung von Walzgut, insbesondere von Draht, Feineisen o.dgl.
DE8019956U1 (de) * 1980-07-25 1981-11-12 Korf-Stahl Ag, 7570 Baden-Baden Kühlrohr für eine Kühlstrecke zur schnellen Abkühlung von Walzdraht- oder -stabmaterial
US4329861A (en) * 1980-08-21 1982-05-18 Orion Machinery And Engineering Corporation Method and apparatus for drawing and cooling wire
US4332155A (en) * 1980-12-18 1982-06-01 Morgan Construction Company Rolling mill laying pipe
SU995952A1 (ru) * 1981-07-13 1983-02-15 Предприятие П/Я М-5481 Устройство дл охлаждени круглого проката

Also Published As

Publication number Publication date
DE3342322C2 (de) 1986-09-18
EP0144029A1 (fr) 1985-06-12
DE3342322A1 (de) 1985-06-05
JPH025484B2 (fr) 1990-02-02
JPS60133912A (ja) 1985-07-17
US4629165A (en) 1986-12-16
ATE28135T1 (de) 1987-07-15

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