EP1201037B1 - Verfahren und einrichtung zum kühlen eines metallbandes - Google Patents
Verfahren und einrichtung zum kühlen eines metallbandes Download PDFInfo
- Publication number
- EP1201037B1 EP1201037B1 EP00958128A EP00958128A EP1201037B1 EP 1201037 B1 EP1201037 B1 EP 1201037B1 EP 00958128 A EP00958128 A EP 00958128A EP 00958128 A EP00958128 A EP 00958128A EP 1201037 B1 EP1201037 B1 EP 1201037B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- drops
- metal strip
- cooling
- smaller
- 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
Links
Images
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
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
-
- 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
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/573—Continuous furnaces for strip or wire with cooling
-
- 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
- B21B45/0206—Coolants
-
- 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
-
- 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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
Definitions
- the invention relates to a method and a device for Cooling a metal strip, in particular a metal strip, which runs out of a roll stand, whereby the metal strip after the roll stand by means of at least one nozzle Spray device is sprayed with water.
- DE 44 30 856 A1 describes a method for reduction and control of surface scaling during hot rolling of Flat products, especially hot strips, in which the continuous Rolled material for simultaneous cooling with water is applied.
- DE 44 30 856 A1 is for displacement of atmospheric oxygen from part of the water mechanical fine atomization creates a droplet mist with which the surfaces of the rolling stock are encased. It will proposed to atomize water so finely that the The average droplet size is between 10 and 100 ⁇ m if atomization takes place against atmospheric pressure.
- the object is achieved by a method or a device according to claim 1 or claim 11 solved. It is used to cool a metal strip, especially one Metal strip that runs out of a roll stand, the metal strip after the roll stand by means of at least one nozzle having spray device with water in the form of small Sprayed drops against the rolling stock, at least 60%, advantageously 80%, the drops are smaller than 150 ⁇ m, wherein at least one nozzle the water with both for Direction of the rolling stock as well as transverse to the direction of travel spraying at an angle in the main spray direction.
- the rolling stock can be cooled significantly faster be what, on the one hand, the use of a shorter cooling section allowed and on the other hand special qualities of the metal band allows.
- the cooling capacity thus the cooling of the metal strip achieved the flow through the nozzle, the pressure or pre-pressure in the Nozzle and / or the number of active nozzles regulated.
- the cooling can of course be done by several (valve-controlled) Nozzles in both the longitudinal and transverse directions to the Rolled good done.
- the water is on aligned at least one outer edge of the metal strip Main spray direction component sprayed on the metal strip. In this way, the cooling is further improved.
- the water with a main spray direction component in the running direction of the metal strip sprayed onto the metal strip is provided.
- the metal strip is sprayed with water from above and from below.
- such small amounts of water sprayed onto the metal strip that the suffering frost effect does not occur is advantageously dependent on the speed of the metal band set.
- the rolling stock 3 is after leaving the last roll stand cooled by a spray device.
- the Spray 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 usually water that is smaller under pressure in the form Drop is sprayed against the rolling stock, with 80% of the drops are smaller than 150 ⁇ m, in particular larger than 20 ⁇ m and are smaller than 150 ⁇ m. It is advantageously provided that 80% of the drops are larger than 40 ⁇ m and smaller than Are 150 ⁇ m.
- the spray device 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 usually water that is smaller under pressure in the form Drop is sprayed against the rolling stock 3, 80% of the Drops are smaller than 150 ⁇ m, in particular larger than Are 20 ⁇ m and smaller than 150 ⁇ m. It is advantageous provided that 80% of the drops larger than 40 microns and smaller than 150 ⁇ m.
- the coolant line has 4 inclined nozzles 31, 32, 33, 34.
- the nozzles 31 and 32 have a main spray angle a from -20 ° to. That is, the main spray direction the coolant 5, 55 which exits from the nozzles 31 and 32, is at 20 ° to the vertical of the surface of the rolling stock 3 inclined.
- the nozzles 33 and 34 or the corresponding ones Blasting of coolant 56 and 57 applies accordingly, whereby these have a main spray angle ⁇ of 20 °.
- the nozzles 31, 32, 33, 34 spray with a main spray direction component to the respective outer edges of the Rolled 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 water 37 sprayed on the rolling stock 3.
- the spray direction of the nozzle 36 in Relation to the 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 °.
- Nozzles both around a main spray angle ⁇ and around one Angle ⁇ inclined In an advantageous embodiment the orientations of the nozzles according to FIG 3 and FIG 4 accordingly on nozzles 7, 71, 72, 73 below the rolling stock 3 transferred according to FIG 2.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Description
- FIG 1
- eine Kühleinrichtung zum Kühlen von Walzgut,
- FIG 2
- eine Kühleinrichtung zum Kühlen von Walzgut mit zweiseitiger Kühlung,
- FIG 3
- eine alternative Kühleinrichtung zum Kühlen von Walzgut,
- FIG 4
- eine weitere alternative Kühleinrichtung zum Kühlen von Walzgut.
Claims (11)
- Verfahren zum Kühlen eines Metallbandes (3), insbesondere eines Metallbandes, das aus einem Walzgerüst ausläuft, wobei das Metallband (3) nach dem Walzgerüst mittels einer wenigstens eine Düse (31, 32, 33, 34, 45, 46, 47, 64, 65, 66, 67) aufweisenden Sprüheinrichtung mit Wasser besprüht wird, wobei das Wasser in Form kleiner Tropfen gegen das Metallband (3) gesprüht wird, dadurch gekennzeichnet, dass mindestens 60%, vorteilhafterweise 80%, der Tropfen kleiner als 150 µm sind, und wobei die wenigstens eine Düse (31, 32, 33, 34, 45, 46, 47, 64, 65, 66, 67) das Wasser mit einer sowohl zur Laufrichtung des Walzgutes als auch quer zur Laufrichtung unter einem Winkel stehenden Hauptsprührichtung sprüht.
- Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass mindestens 80% der Tropfen größer als 20 µm und kleiner als 150 µm sind. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass mindestens 80% der Tropfen größer als 40 µm und kleiner als 150 µm sind. - Verfahren nach Anspruch 1, 2 oder 3,
dadurch gekennzeichnet, dass mindestens 60% der Tropfen größer als 40 µm und kleiner als 130 µm sind. - Verfahren nach Anspruch 1, 2, 3 oder 4,
dadurch gekennzeichnet, dass mindestens 40% der Tropfen größer als 50 µm und kleiner als 110 µm sind. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Tropfen mit zumindest einer Düse erzeugt werden, wobei in der Düse ein Druck zwischen 0,5 bar und 150 bar ansteht. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Tropfen mit zumindest einer Düse erzeugt werden, wobei in der Düse ein Druck zwischen 2 bar und 20 bar ansteht. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Tropfen mit zumindest einer Düse erzeugt werden, wobei in der Düse ein Druck zwischen 4 bar und 10 bar ansteht. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Tropfen mit zumindest einer Düse erzeugt werden, wobei die Kühlleistung über den Durchfluss von Wasser durch die Düse oder die Anzahl der aktiven Düsen geregelt wird. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Tropfen mit zumindest einer Düse erzeugt werden, wobei die Kühlleistung über den Druck in der Düse geregelt wird. - Einrichtung zum Kühlen eines Metallbandes (3), insbesondere zum Kühlen eines Metallbandes (3) gemäß einem Verfahren nach einem der vorangehenden Ansprüche, wobei die Einrichtung zum Kühlen des Metallbandes (3) eine nach einem Walzgerüst angeordnete Sprüheinrichtung mit wenigstens einer Düse (31, 32, 33, 34, 45, 46, 47, 64, 65, 66, 67) zum Besprühen des Metallbandes (3) mit Wasser in Form kleiner Tropfen aufweist,
dadurch gekennzeichnet, dass die Sprüheinrichtung derart ausgestaltet ist, dass wenigstens 80% der Tropfen kleiner sind als 150 µm, und dass die Düse (31, 32, 33, 34, 45, 46, 47, 64, 65, 66, 67) eine sowohl zur Laufrichtung des Walzgutes als auch quer zur Laufrichtung unter einem Winkel stehende Hauptsprührichtung aufweist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19935780 | 1999-07-29 | ||
DE19935780A DE19935780A1 (de) | 1999-07-29 | 1999-07-29 | Verfahren und Einrichtung zum Kühlen eines Metallbandes |
PCT/DE2000/002304 WO2001010042A1 (de) | 1999-07-29 | 2000-07-14 | Verfahren und einrichtung zum kühlen eines metallbandes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1201037A1 EP1201037A1 (de) | 2002-05-02 |
EP1201037B1 true EP1201037B1 (de) | 2003-11-05 |
Family
ID=7916567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00958128A Expired - Lifetime EP1201037B1 (de) | 1999-07-29 | 2000-07-14 | Verfahren und einrichtung zum kühlen eines metallbandes |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1201037B1 (de) |
AT (1) | ATE253418T1 (de) |
DE (2) | DE19935780A1 (de) |
WO (1) | WO2001010042A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007055475A1 (de) * | 2007-06-27 | 2009-01-08 | Sms Demag Ag | Kühlvorrichtung zum Kühlen eines Metallbandes |
ITMI20110368A1 (it) * | 2011-03-10 | 2012-09-11 | Danieli Off Mecc | Discagliatore oscillante e metodo per discagliare un semilavorato metallurgico |
EP3808466A1 (de) * | 2019-10-16 | 2021-04-21 | Primetals Technologies Germany GmbH | Kühleinrichtung mit kühlmittelstrahlen mit hohlem querschnitt |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5727926B2 (de) * | 1973-11-28 | 1982-06-14 | ||
JPS5848019B2 (ja) * | 1979-11-09 | 1983-10-26 | 石川島播磨重工業株式会社 | 鋼板の噴霧冷却方法及びその装置 |
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 |
DE19852759A1 (de) * | 1998-11-16 | 2000-05-18 | Siemens Ag | Verfahren und Einrichtung zur Verringerung von Zunderbildung auf einem Walzgut |
-
1999
- 1999-07-29 DE DE19935780A patent/DE19935780A1/de not_active Ceased
-
2000
- 2000-07-14 EP EP00958128A patent/EP1201037B1/de not_active Expired - Lifetime
- 2000-07-14 DE DE50004350T patent/DE50004350D1/de not_active Expired - Fee Related
- 2000-07-14 WO PCT/DE2000/002304 patent/WO2001010042A1/de active IP Right Grant
- 2000-07-14 AT AT00958128T patent/ATE253418T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP1201037A1 (de) | 2002-05-02 |
DE19935780A1 (de) | 2001-02-08 |
ATE253418T1 (de) | 2003-11-15 |
DE50004350D1 (de) | 2003-12-11 |
WO2001010042A1 (de) | 2001-02-08 |
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