WO2001010042A1 - Verfahren und einrichtung zum kühlen eines metallbandes - Google Patents
Verfahren und einrichtung zum kühlen eines metallbandes Download PDFInfo
- Publication number
- WO2001010042A1 WO2001010042A1 PCT/DE2000/002304 DE0002304W WO0110042A1 WO 2001010042 A1 WO2001010042 A1 WO 2001010042A1 DE 0002304 W DE0002304 W DE 0002304W WO 0110042 A1 WO0110042 A1 WO 0110042A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drops
- metal strip
- cooling
- nozzle
- smaller
- Prior art date
Links
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 an aluminum stand, the rolling stock being sprayed with water after the roll stand.
- the object is achieved according to the invention by a method or a device according to claim 1 or claim 11.
- a metal strip in particular a metal strip that runs out of a roll stand
- the metal strip after the roll stand is sprayed with water in the form of small drops against the rolling stock, at least 60%, advantageously 80%, of the drops being smaller than 150 ⁇ m.
- the rolling stock can be cooled significantly faster, which on the one hand allows the use of a shorter cooling section and on the other hand enables special qualities of the metal strip.
- the cooling capacity can be regulated much better by the invention. For example, the cooling down times are reduced. All these advantages allow a better dimensioning of cooling sections, what can lead to a significant reduction in the investment costs of cooling lines.
- the water throughput is significantly reduced when using the invention.
- At least 80% of the drops are larger than 20 ⁇ m and smaller than 150 ⁇ m.
- At least 80% of the drops are larger than 40 ⁇ m and smaller than 150 ⁇ m.
- At least 60% of the drops are larger than 40 ⁇ m and smaller than 130 ⁇ m.
- At least 40% of the drops are larger than 50 ⁇ m and smaller than 110 ⁇ m.
- the drops are produced with at least one nozzle, a pressure between 0.5 bar and 150 bar, advantageously 50 bar, being present in the nozzle.
- the drops are generated with at least one nozzle, a pressure between 2 bar and 20 bar being present in the nozzle.
- the drops are generated with at least one nozzle, a pressure between 4 bar and 10 bar being present in the nozzle.
- the cooling capacity that is to say the cooling of the metal strip, is achieved by regulates the flow through the nozzle, the pressure or pre-pressure in the nozzle and / or the number of active nozzles.
- the cooling can of course be carried out by several (valve-controlled) nozzles both in the longitudinal and in the transverse direction to the rolling stock.
- the water is sprayed onto the metal strip at a main spray direction angle of 15 ° to 45 °, advantageously 15 ° to 30 °.
- the water is sprayed onto the metal strip with a main spray direction component that is aligned with at least one outer edge of the metal strip. In this way, the cooling is further improved.
- the water is sprayed onto the metal strip with a main spray direction component in the running direction of the metal strip.
- the metal strip is sprayed with water from above and from below.
- such small amounts of water are sprayed onto the metal strip that the suffering frost effect does not occur.
- the amount of cooling water is advantageously set depending on the speed of the metal strip.
- FIG. 1 shows a cooling device for cooling rolling stock
- FIG. 2 shows a cooling device for cooling rolling stock with double-sided cooling
- FIG. 3 shows an alternative cooling device for cooling rolling stock
- FIG. 4 shows a further alternative cooling device for cooling rolling stock.
- the rolling stock 3 is cooled by a spray device after leaving the last rolling stand.
- the spraying device has coolant lines 4, 41, 42, 43 with nozzles 31, 45, 46, 47, from which coolant 5, 51, 52, 53 is sprayed onto the rolling stock 3.
- the coolant 5, 51, 52, 53 is usually water, which is sprayed under pressure in the form of small drops against the rolling stock, 80% of the drops being smaller than 150 ⁇ m, in particular larger than 20 ⁇ m and smaller than 150 ⁇ m , It is advantageously provided that 80% of the drops are larger than 40 ⁇ m and smaller than 150 ⁇ m.
- the rolling stock 3 is cooled by a spray device after leaving the last rolling stand.
- 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, from which coolants 5, 51, 52, 53 and 7 , 71, 72, 73 is sprayed onto the rolling stock 3.
- the coolant 5, 51, 52, 53 and 7, 71, 72, 73 is usually water, which is sprayed under pressure in the form of small drops against the rolling stock 3, 80% of the drops being smaller than 150 ⁇ m, in particular larger than 20 ⁇ m and smaller than 150 ⁇ m. It is advantageous provided that 80% of the drops are larger than 40 microns and smaller than 150 microns.
- the coolant line 4 has slanted nozzles 31, 32, 33, 34.
- the nozzles 31 and 32 have a main spray angle ⁇ of -20 °. That is, the main spray direction of the coolant 5, 55, which emerges from the nozzles 31 and 32, is inclined by 20 ° to the vertical of the surface of the rolling stock 3.
- Blasting of coolant 56 and 57 applies accordingly, these having a main spray angle 1 ⁇ of 20 °.
- 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 deviates in the running direction 38 of the rolling stock 3 from the vertical of the surface of the rolling stock 3.
- the coolant line 4 is replaced by a coolant line 35.
- the coolant line 35 has a nozzle 36 which sprays water 37 onto the rolling stock 3.
- the spray direction of the nozzle 36 with respect to the running direction 38 of the rolling stock 3 deviates by an angle ⁇ from the vertical of the surface of the rolling stock 3.
- ⁇ is advantageously 15 ° to 45 °.
- ⁇ 25 °.
- the nozzles are inclined both by a main spray angle ⁇ and by an angle ⁇ .
- the orientations of the nozzles according to FIG. 3 and FIG. 4 are correspondingly transferred to nozzles 7, 71, 72, 73 below the rolling stock 3 according to FIG.
- the inclination of nozzles is disclosed in German patent application 198 52 759.
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)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50004350T DE50004350D1 (de) | 1999-07-29 | 2000-07-14 | Verfahren und einrichtung zum kühlen eines metallbandes |
EP00958128A EP1201037B1 (de) | 1999-07-29 | 2000-07-14 | Verfahren und einrichtung zum kühlen eines metallbandes |
AT00958128T ATE253418T1 (de) | 1999-07-29 | 2000-07-14 | Verfahren und einrichtung zum kühlen eines metallbandes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19935780A DE19935780A1 (de) | 1999-07-29 | 1999-07-29 | Verfahren und Einrichtung zum Kühlen eines Metallbandes |
DE19935780.3 | 1999-07-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001010042A1 true WO2001010042A1 (de) | 2001-02-08 |
Family
ID=7916567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2000/002304 WO2001010042A1 (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 (2)
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 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2456079A1 (de) * | 1973-11-28 | 1975-06-19 | Nippon Kokan Kk | Verfahren zum kuehlen heisser gegenstaende |
DE3027846A1 (de) * | 1979-11-09 | 1981-05-27 | Ishikawajima-Harima Jukogyo K.K., Tokyo | Verfahren und einrichtung zum abkuehlen von blech, insbesondere stahlblech, mittels wasser |
DE4430856A1 (de) * | 1994-08-31 | 1996-03-14 | 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 AT AT00958128T patent/ATE253418T1/de not_active IP Right Cessation
- 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
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2456079A1 (de) * | 1973-11-28 | 1975-06-19 | Nippon Kokan Kk | Verfahren zum kuehlen heisser gegenstaende |
DE3027846A1 (de) * | 1979-11-09 | 1981-05-27 | Ishikawajima-Harima Jukogyo K.K., Tokyo | Verfahren und einrichtung zum abkuehlen von blech, insbesondere stahlblech, mittels wasser |
DE4430856A1 (de) * | 1994-08-31 | 1996-03-14 | 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 |
Also Published As
Publication number | Publication date |
---|---|
ATE253418T1 (de) | 2003-11-15 |
DE19935780A1 (de) | 2001-02-08 |
EP1201037B1 (de) | 2003-11-05 |
EP1201037A1 (de) | 2002-05-02 |
DE50004350D1 (de) | 2003-12-11 |
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