EP1131170B1 - Procede et dispositif pour reduire la formation de calamine sur un produit lamine - Google Patents

Procede et dispositif pour reduire la formation de calamine sur un produit lamine Download PDF

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Publication number
EP1131170B1
EP1131170B1 EP99960861A EP99960861A EP1131170B1 EP 1131170 B1 EP1131170 B1 EP 1131170B1 EP 99960861 A EP99960861 A EP 99960861A EP 99960861 A EP99960861 A EP 99960861A EP 1131170 B1 EP1131170 B1 EP 1131170B1
Authority
EP
European Patent Office
Prior art keywords
rolling stock
rolled stock
heated water
sprayed
wet steam
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
Application number
EP99960861A
Other languages
German (de)
English (en)
Other versions
EP1131170A1 (fr
Inventor
Christoph Baare
Hans-Herbert Welker
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP1131170A1 publication Critical patent/EP1131170A1/fr
Application granted granted Critical
Publication of EP1131170B1 publication Critical patent/EP1131170B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/667—Quenching devices for spray quenching
    • 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
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
    • 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
    • B21B45/04—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 de-scaling, e.g. by brushing
    • B21B45/08—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 de-scaling, e.g. by brushing hydraulically

Definitions

  • the invention relates to a method and a device for Reduction of scale formation on a rolling stock made from a Roll stand runs out.
  • the object of the invention is one Improvement of such a method, especially in With a view to further reducing the formation of new Tinder and removing any existing tinder, as well the provision of a device for performing this Process.
  • the object is achieved by a method or a method Device according to claim 1 or claim 11 solved.
  • a method or a method Device according to claim 1 or claim 11 solved.
  • there is used to reduce scale formation on a rolling stock, that runs out of a rolling stand, the rolling stock after the Roll stand with heated water, especially with wet steam, sprayed, the heated water, especially the wet steam, with one from the vertical of the surface of the rolling stock different main spray direction component on the Rolled stock is sprayed.
  • the formation of Scale significantly reduced, or existing scale when it runs out of the rolling stock removed (in part) from the rolling stand.
  • the rolling stock in this way can be cooled significantly faster, Permitted use of a shorter cooling section and another the quality of the rolling stock increases.
  • Spraying a rolling stock with heated water or wet steam is already known from DE-A-196 37 916. It will used there only for cooling and the Spray direction is directed vertically against the rolling stock.
  • the heated Water especially wet steam, at a main spray direction angle from 15 ° to 45 °, advantageously 15 ° to 30 °, sprayed on the rolling stock.
  • the heated Water especially wet steam
  • the heated Water with one on at least one Outer edge of the rolling stock aligned main spray direction component sprayed on the rolling stock.
  • the rolling stock is sprayed with coolant from above and below. In this way it is possible to build up the scale reduce both sides of the rolling stock and the rolling stock particularly cool down quickly.
  • the rolling stock with water the temperature of which is between 50 ° C. and the boiling point is sprayed.
  • An even cheaper temperature range for the heated water the range is between 80 ° C and the boiling point, which in turn results from this Range the range between 90 ° C and 99 ° C as special has proven advantageous.
  • Water from this temperature range vaporizes particularly quickly when it hits the are called rolling stock.
  • the invention makes the water special in shape small droplets, especially in the form of spray, against the rolling stock is sprayed. This use of hot wet steam or hot spray has been associated with the invention as particularly advantageous for reducing scale formation or to remove scale.
  • cooling water or wet steam at a relatively high pressure sprayed against the rolling stock.
  • deoxidation gases especially carbon monoxide
  • deoxidation gases are added to the cooling water or hydrogen, admixed, which causes scaling is counteracted. It is also advantageous that Add coolant tinder.
  • the rolling stock 3 is after leaving the last roll stand cooled by a cooling device.
  • the Cooling device has coolant lines 4, 41, 42, 43 Nozzles 31, 45, 46, 47 from which coolants 5, 51, 52, 53 is sprayed onto the rolling stock 3.
  • the coolant 5, 51, 52, 53 is heated water or wet steam. There is a temperature range for the heated water from 80 to 99 ° C, in particular proven from 90 to 99 ° C.
  • the coolant 5, 51, 52, 53 is advantageously in the form of high pressure small droplets, such as spray, are sprayed against the rolling stock.
  • the cooler 2 shows a rolling stock 3 as it emerges from the last stand a hot rolling mill, indicated by rolls 1 and 2.
  • the rolled stock 3 is after exiting the last rolling stand cooled by a cooling device.
  • the cooler has coolant lines 4, 41, 42, 43 and 6, 61, 62, 63 with Nozzles 21, 45, 46, 47 and 64, 65, 66, 67 on, from which coolant 5, 51, 52, 53 and 7, 71, 72, 73 sprayed onto the rolling stock 3 becomes.
  • the coolant 5, 51, 52, 53 and 7, 71, 72, 73 is advantageously heated water or wet steam. there has a temperature range for the heated water of 80 up to 99 ° C, in particular from 90 to 99 ° C particularly proven.
  • the coolant 5, 51, 52, 53 and 7, 71, 72, 73 is advantageously with high pressure in the form of small droplets, such as about spray mist, sprayed against the rolling stock 3. Details of the Cooling with devices as shown in FIGS. 1 and 2, can be found in DE 196 37 916.
  • the coolant line has 4 inclined nozzles 31, 32, 33, 34.
  • the nozzles 33 and 34 and the corresponding jets of coolant 56 and 57 apply accordingly, this having a main spray angle ⁇ of 20 ° exhibit. In this way, the nozzles 31, 32, 33, 34 spray with a main spray direction component to the respective Outer edges of the rolling stock 3.
  • the Main spray direction also in the running direction 38 of the rolling stock 3 from the vertical of the surface of the rolling stock 3.
  • a Such an embodiment is shown in FIG. 4.
  • the coolant line 4 replaced by a coolant line 35.
  • the Coolant line 35 has a nozzle 36, the coolant 37 sprayed on the rolling stock 3.
  • the spray direction of the nozzle 36 in with respect to the running direction 38 of the rolling stock 3 gives way to one Angle ⁇ from the vertical of the surface of the rolling stock 3 from.
  • ⁇ is advantageously 15 to 45 °.
  • ⁇ 25 °.
  • the nozzles are an advantageous embodiment of the invention both about a main spray angle ⁇ and an angle ⁇ slanted.
  • the orientations of the nozzles according to FIG 3 and FIG 4 are accordingly on nozzles 7, 71, 72, 73 below the rolling stock 3 transferred according to FIG 2.
  • the cooling device Is part of a cooling section for cooling the rolling stock 3.
  • the rolling stock 3 is guided on a shaft 18, which with a Motor 10 is driven.
  • the rolling stock 3 is made of coolant lines 4 and 6 sprayed with coolant 5 and 7.
  • the water evaporates when it hits the rolling stock 3.
  • the Steam condenses in part on a cover 16. So none condensed water drips onto the rolling stock 3 is also a Hood 15 provided.
  • the condensed water runs off and is possibly again by means of a condensate drain 20 used as cooling water.
  • the cover 16 is with a Steam discharge pipe 22 connected to a blower 21. through of the blower 21, most of the steam is drawn off.

Claims (11)

  1. Procédé de réduction de la formation de calamine sur un produit (3) laminé qui sort d'une cage de laminoir, le produit (3) laminé recevant en projection, après la cage de laminoir, de l'eau réchauffée, notamment de la vapeur humide, et l'eau réchauffée, notamment la vapeur humide, étant projetée sur le produit (3) laminé en ayant une composante principale de direction de projection s'écartant de la perpendiculaire à la surface du produit (3) laminé.
  2. Procédé suivant la revendication 1,
    caractérisé en ce que l'eau réchauffée, notamment la vapeur humide, est projetée sur le produit (3) laminé suivant un angle principal de direction de projection de 15° à 45° en valeur absolue.
  3. Procédé suivant la revendication 2,
    caractérisé en ce que l'eau réchauffée, notamment la vapeur humide, est projetée sur le produit (3) laminé suivant un angle principal de direction de projection de 15° à 30° en valeur absolue.
  4. Procédé suivant la revendication 1, 2 ou 3,
    caractérisé en ce que l'on effectue la projection sur le produit (3) laminé en ayant une composante principale de direction de projection dirigée sur au moins un bord extérieur du produit (3) laminé.
  5. Procédé suivant la revendication 1, 2, 3 ou 4,
    caractérisé en ce que l'on projette sur le produit (3) laminé de l'eau ayant une température supérieure à 50°C et de préférence supérieure à 80°C.
  6. Procédé suivant la revendication 5,
    caractérisé en ce que l'on projette sur le produit (3) laminé de l'eau ayant une température supérieure à 90°C.
  7. Procédé suivant la revendication 1, 2, 3, 4, 5 ou 6,
    caractérisé en ce que l'on projette sur le produit (3) laminé de l'eau réchauffée sous forme de petites gouttelettes au moyen de buses.
  8. Procédé suivant la revendication 7,
    caractérisé en ce que l'on projette sur le produit (3) laminé de l'eau réchauffée sous la forme d'un nuage de projection.
  9. Procédé suivant l'une des revendications précédentes,
    caractérisé en ce que l'on mélange des gaz de désoxydation à l'eau réchauffée ou à la vapeur humide.
  10. Procédé suivant l'une des revendications précédentes,
    caractérisé en ce que l'on régule la température de l'eau réchauffée.
  11. Dispositif de réduction de la formation de calamine sur un produit (3) laminé qui sort d'une cage de laminage pour la mise en oeuvre du procédé suivant l'une des revendications précédentes, le dispositif de réduction de la formation de calamine comprenant une buse qui est disposée après la cage de laminage et qui est destinée à projeter sur le produit (3) laminé de l'eau réchauffée, notamment de la vapeur humide ayant une composante principale de direction de projection s'écartant de la perpendiculaire à la surface du produit (3) laminé.
EP99960861A 1998-11-16 1999-11-03 Procede et dispositif pour reduire la formation de calamine sur un produit lamine Expired - Lifetime EP1131170B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19852759 1998-11-16
DE19852759A DE19852759A1 (de) 1998-11-16 1998-11-16 Verfahren und Einrichtung zur Verringerung von Zunderbildung auf einem Walzgut
PCT/DE1999/003518 WO2000029140A1 (fr) 1998-11-16 1999-11-03 Procede et dispositif pour reduire la formation de calamine sur un produit lamine

Publications (2)

Publication Number Publication Date
EP1131170A1 EP1131170A1 (fr) 2001-09-12
EP1131170B1 true EP1131170B1 (fr) 2003-02-05

Family

ID=7887937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99960861A Expired - Lifetime EP1131170B1 (fr) 1998-11-16 1999-11-03 Procede et dispositif pour reduire la formation de calamine sur un produit lamine

Country Status (4)

Country Link
EP (1) EP1131170B1 (fr)
AT (1) ATE232147T1 (fr)
DE (2) DE19852759A1 (fr)
WO (1) WO2000029140A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19935780A1 (de) * 1999-07-29 2001-02-08 Siemens Ag Verfahren und Einrichtung zum Kühlen eines Metallbandes
DE102011082163A1 (de) * 2011-09-06 2013-03-07 Sms Siemag Ag Verfahren und Vorrichtung zur Entzunderung einer Oberfläche eines metallischen Halbzeugs
DE102020201561A1 (de) 2020-02-07 2021-08-12 Thyssenkrupp Steel Europe Ag Verfahren zur Unterdrückung von Zunderbildung auf der Oberfläche eines metallischen Walzgutes

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1546173A1 (de) * 1965-03-19 1969-04-17 C Otto & Company Gmbh Dr Verfahren zur Nachbehandlung von gebeiztem strangfoermigem Material,vorzugsweise Breitband
GB1336490A (en) * 1970-12-28 1973-11-07 Nippon Kokan Kk Method and apparatus for quenching metal stocks
JPS5727926B2 (fr) * 1973-11-28 1982-06-14
JPS5475413A (en) * 1977-11-26 1979-06-16 Ishikawajima Harima Heavy Ind Co Ltd Spraying apparatus for cooling steel plate
JPS60174836A (ja) * 1984-02-17 1985-09-09 Nippon Kokan Kk <Nkk> 連続熱処理炉におけるストリツプ冷却方法及びその冷却装置
JPS60206516A (ja) * 1984-03-30 1985-10-18 Nippon Steel Corp 厚鋼板の冷却装置
DE4430856C2 (de) * 1994-08-31 1996-11-07 Kloeckner Stahl Gmbh Verfahren zur Reduzierung und Steuerung der Oberflächenverzunderung beim Warmwalzen von Flachprodukten, insbesondere Warmbändern
DE19637916A1 (de) * 1996-09-17 1998-03-19 Siemens Ag Verfahren und Vorrichtung zum Kühlen eines Walzgutes

Also Published As

Publication number Publication date
DE59904248D1 (de) 2003-03-13
WO2000029140A1 (fr) 2000-05-25
ATE232147T1 (de) 2003-02-15
DE19852759A1 (de) 2000-05-18
EP1131170A1 (fr) 2001-09-12

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