EP0064771B1 - Tube de refroidissement à pression pour le refroidissement intensif d'un produit laminé - Google Patents

Tube de refroidissement à pression pour le refroidissement intensif d'un produit laminé Download PDF

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Publication number
EP0064771B1
EP0064771B1 EP82104193A EP82104193A EP0064771B1 EP 0064771 B1 EP0064771 B1 EP 0064771B1 EP 82104193 A EP82104193 A EP 82104193A EP 82104193 A EP82104193 A EP 82104193A EP 0064771 B1 EP0064771 B1 EP 0064771B1
Authority
EP
European Patent Office
Prior art keywords
cooling
rolling
cooling tube
pressure cooling
guide
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
EP82104193A
Other languages
German (de)
English (en)
Other versions
EP0064771A2 (fr
EP0064771A3 (en
Inventor
Franz Tamm
Günther Friese
Siegbert Arndt
Hartmut Blank
Bernhard Höricke
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.)
Hennigsdorfer Stahl Engineering Te Hennigsdor GmbH
Original Assignee
VEB Stahl- und Walzwerk "Wilhelm Florin" Hennigsdorf
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 VEB Stahl- und Walzwerk "Wilhelm Florin" Hennigsdorf filed Critical VEB Stahl- und Walzwerk "Wilhelm Florin" Hennigsdorf
Priority to AT82104193T priority Critical patent/ATE15615T1/de
Publication of EP0064771A2 publication Critical patent/EP0064771A2/fr
Publication of EP0064771A3 publication Critical patent/EP0064771A3/de
Application granted granted Critical
Publication of EP0064771B1 publication Critical patent/EP0064771B1/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 pressure cooling tube for the direct intensive cooling of rolling stock from the rolling heat, the cooling water being fed in cocurrent to the rolling stock to be cooled via nozzle heads and discharged again via a storage chamber and deflection chambers which have guide funnels.
  • Such cooling pipes are particularly suitable for cooling fine steel and wire from the rolling heat at high rolling speeds.
  • the co-countercurrent cooling pipe in which the pressurized water is fed to the cooling pipe ends and discharged in the middle via a storage chamber, is suitable for thicker rolling stock dimensions and low rolling speeds, but for thin rolling stock dimensions and high rolling speeds it is because of the counterflow share, which has considerable braking forces on the Roll wire brings, not applicable, because the roll wires buckle.
  • the countercurrent cooling tube offers undisputed advantages when cooling thin rolling stock dimensions with high rolling speeds, but in the known solutions the discharge of the pressurized water is inadequate, so that with the DC tubes previously used, the practically achievable rolling speeds are limited, which are below the values achieved in normal operation without a cooling system .
  • Pressurized water which emerges at the end of the cooling pipe in the rolling line, leads to a braking effect on the wire in all cases, regardless of whether the escaping water builds up in front of the subsequent cooling pipe or loses speed at the end of the cooling section. In addition, this leads to undefined cooling at the cooling pipe ends, which reduces the quality of the cooled material.
  • two nozzle heads are arranged one behind the other according to DD-A-147 506. In this way it is possible to achieve both intensive cooling and a good blowing effect. However, since the nozzles partially influence each other, undesirable transverse and braking forces still act mainly on the wire rod tip.
  • a pressure cooling tube is known from the EP-A-0013230, the deflection chambers of which have a plurality of diaphragms or rings for the passage of the rolling stock, on which either deflection funnels or deflection cones are arranged.
  • the stripping effect is achieved in this known construction in particular by reducing the beam cross section through these diaphragms and diverting the stripped water.
  • a scraper tube is provided, which is directed perpendicular to the direction of flow of the rolling stock and is fed with a liquid or gaseous medium, which strips off the remaining cooling water as a separate secondary flow directed perpendicularly to the direction of flow at the rolling core.
  • the function of this known construction is such that the cooling water is deflected, accumulated and partially stripped off through the orifices or rings arranged in the deflection chambers.
  • a build-up of the coolant and, consequently, a braking effect on the rolling stock is first exerted in the opposite direction to the continuous rolling core.
  • the free arrangement of the outlet opening of the scraper tube means that only an uncontrolled wiping off of the coolant residues still adhering to the rolling core can be achieved.
  • the invention has for its object to develop a cooling tube with which thin rolling stock dimensions, such as steel bars and wire, are intensively cooled at high rolling speeds, and in which both the improved inflow conditions of the cooling medium on the inlet side and a water deflection system on the outlet side the transverse or counter forces acting on the rolling core are kept extremely low.
  • this object is achieved in that the deflection chambers are arranged downstream of the stowage chamber and are arranged in front of the guide funnels close to the baffles which close upwards above the guide wire, feed lines for a liquid and / or gaseous stripping medium opening into the baffles.
  • baffles close above the rolling wire, the partially upward water jets are reflected at the baffles at an angle downwards, whereby the middle and lower water jets are deflected downward in an advantageous manner.
  • leads for a stripping medium lead into the deflection chambers via the guide plates.
  • Another feature of the invention is that at least two nozzle heads are arranged one behind the other, the nozzle Sen bores of the nozzle heads arranged in different feed levels lie on partial circles of different diameters and that the nozzle bores in the different feed levels are at an angle of 30 ° to 0 ° to one another.
  • an adjustable guide tube protruding into the nozzle heads is arranged at the inlet of the pressure cooling tube.
  • a flow funnel is arranged between the nozzle head and the pressure cooling tube.
  • the coolant flows do not influence one another; a maximum throughput quantity and thus an increase in the speed of the cooling medium are achieved.
  • On the outlet side of the pressure cooling tube it is achieved that the cooling medium emerging at high speed is deflected very quickly out of the rolling line in order to prevent it from reaching downstream facilities and exerting a braking effect on the rolling core.
  • Figure 1 shows a cross section through the pressure cooling tube according to the invention.
  • the nozzle heads 1 and 2 are located in two different feed levels and have nozzle bores 4 which lie on partial circles of different diameters.
  • the nozzle bores 4 in the two feed levels can form an angle of 30 ° to 0 ° to one another.
  • a flow funnel 13 is arranged downstream of the nozzle heads 1 and 2 and causes a flow-wise inlet of the cooling medium.
  • the adjustable guide tube 12 passing through the nozzle heads 1 and 2 and projecting into the flow funnel 13 brings about an improved inlet of the rolling wire as a result of a reduction in the transverse forces of the cooling medium acting on the rolling wire.
  • part of the cooling medium flows into the prechamber 11 via a storage chamber 5 and a return flow pipe 10 in order to prevent air intake at the inlet of the pressure cooling pipe 3.
  • the cooling medium is deflected out of the cooling line in the shortest possible way by the deflection chambers 6 arranged downstream of the accumulation chamber 5. without significant forces acting on the roll core.
  • closing baffles 7 are arranged at the top, so that the remaining cooling medium is prevented from escaping upwards and can exit openly at the bottom.
  • a liquid and / or gaseous stripping medium is introduced from above via feed lines 9 opening into the guide plates 7, as a result of which the downward deflection of the cooling medium is increased.

Landscapes

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

Claims (4)

1. Tube de refroidissement sous pression pour le refroidissement intensif direct pour cause de chaleur de laminage d'un produit laminé, avec lequel de l'eau de refroidissement est fournie en courant parallèle au produit laminé à refroidir au moyen de têtes à buses (1, 2) et elle est évacuée en retour par l'intermédiaire d'une chambre d'accumulation (5) et de chambres de déviation (6) qui présentent des cônes de guidage (8), caractérisé en ce que les chambres de déviation (6) sont disposées après la chambre d'accumulation (5) et des plaques directrices (7) se terminant vers le haut sont disposées juste au-dessus du laminé, cependant que des conduites d'arrivée (9) d'un milieu de balayage liquide et/ou gazeux s'ouvrent dans les plaqùes directrices (7).
2. Tube de refroidissement selon la revendication 1 caractérisé en ce qu'au moins deux têtes à buses (1, 2) sont disposées l'une après l'autre de telle sorte que les canaux de buses (4) des têtes à buses (1, 2) disposés dans des plans différents d'alimentation se trouvent sur des cercles de différents diamètres, et en ce que les canaux de buses (4) situés dans les différents plans d'alimentation font entre eux un angle de 30° à 0°.
3. Tube de refroidissement selon la revendication 1 ou 2 caractérisé en ce qu'un tube de guidage réglable (12) pénétrant dans les têtes a buses (1, 2) est monté dans l'entrée du tube de refroidissement sous pression (3).
4. Tube de refroidissement selon l'une des revendications 1 à 3 caractérisé en ce qu'un entonnoir (13) de guidage du courant est disposé entre la tête à buses (2) et le tube de refroidissement sous pression (3).
EP82104193A 1981-05-13 1982-05-13 Tube de refroidissement à pression pour le refroidissement intensif d'un produit laminé Expired EP0064771B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82104193T ATE15615T1 (de) 1981-05-13 1982-05-13 Druckkuehlrohr zur direkten intensivkuehlung von walzgut.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DD22990281 1981-05-13
DD229902 1981-05-13

Publications (3)

Publication Number Publication Date
EP0064771A2 EP0064771A2 (fr) 1982-11-17
EP0064771A3 EP0064771A3 (en) 1983-03-16
EP0064771B1 true EP0064771B1 (fr) 1985-09-18

Family

ID=5530879

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82104193A Expired EP0064771B1 (fr) 1981-05-13 1982-05-13 Tube de refroidissement à pression pour le refroidissement intensif d'un produit laminé

Country Status (3)

Country Link
EP (1) EP0064771B1 (fr)
AT (1) ATE15615T1 (fr)
DE (1) DE3266328D1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3708128A1 (de) * 1987-03-13 1988-09-22 Krenn Walter Verfahren und druckkuehlaggregat zum gefuehrten abkuehlen geformten, schweren bis leichten, heissen, durchlaufenden produktionsguts aus stahl und metall in druckwasser
DD286706A7 (de) * 1988-06-16 1991-02-07 ���@�����`@���@��������@ �������@������ k�� Kuehlrohr fuer walzadern
DE4444106C1 (de) * 1994-12-10 1996-02-29 Hennigsdorfer Stahl Engineerin Einrichtung für eine Druckwasserableitung
DE19718530B4 (de) * 1997-05-02 2005-02-03 Sms Demag Ag Verfahren zum Kühlen von walzwarmem Walzgut und Vorrichtung zur Durchführung des Verfahrens und Verwendung der Vorrichtung
CN113369317A (zh) * 2021-06-02 2021-09-10 广东韶钢松山股份有限公司 一种高效水冷喷嘴

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD147506A1 (de) * 1979-11-29 1981-04-08 Bernhard Hoericke Druckkuehlrohr zum direkten kuehlen von waermgut,vorzugsweise walzmaterial

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044098A (en) * 1959-06-02 1962-07-17 United States Steel Corp Apparatus for cleaning wire rod
DE1602356B1 (de) * 1967-02-08 1971-09-23 Schloemann Ag Wasserkuehleinrichtung fuer schnellaufenden walzdraht
DE2121712A1 (de) * 1970-06-05 1971-12-09 Thaelmann Schwermaschbau Veb Einrichtung zum kuehlen von stabstahl
DD110774A1 (fr) * 1974-04-10 1975-01-12
DD119723A1 (fr) * 1975-03-26 1976-05-12
FR2445499B1 (fr) * 1978-12-26 1983-11-10 Siderurgie Fse Inst Rech

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD147506A1 (de) * 1979-11-29 1981-04-08 Bernhard Hoericke Druckkuehlrohr zum direkten kuehlen von waermgut,vorzugsweise walzmaterial

Also Published As

Publication number Publication date
DE3266328D1 (en) 1985-10-24
ATE15615T1 (de) 1985-10-15
EP0064771A2 (fr) 1982-11-17
EP0064771A3 (en) 1983-03-16

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