EP1456421A1 - Verfahren und einrichtung zum kontrollierten richten und k h len von aus einem warmband-walzwerk auslaufendem breitem metallband, insbesondere von stahlband oder blech - Google Patents
Verfahren und einrichtung zum kontrollierten richten und k h len von aus einem warmband-walzwerk auslaufendem breitem metallband, insbesondere von stahlband oder blechInfo
- Publication number
- EP1456421A1 EP1456421A1 EP02785402A EP02785402A EP1456421A1 EP 1456421 A1 EP1456421 A1 EP 1456421A1 EP 02785402 A EP02785402 A EP 02785402A EP 02785402 A EP02785402 A EP 02785402A EP 1456421 A1 EP1456421 A1 EP 1456421A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling
- strip
- rollers
- straightening
- sheet metal
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 87
- 239000002184 metal Substances 0.000 title claims abstract description 44
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 16
- 239000010959 steel Substances 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005096 rolling process Methods 0.000 title claims abstract description 7
- 239000007921 spray Substances 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000000750 progressive effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 229910000734 martensite Inorganic materials 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
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
- 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
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0242—Flattening; Dressing; Flexing
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0252—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment with application of tension
-
- 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
- C21D11/00—Process control or regulation for heat treatments
- C21D11/005—Process control or regulation for heat treatments for cooling
Definitions
- the invention relates to a method and a device for controlled straightening and cooling of wide metal strip, in particular steel strip or sheet metal, emerging from a hot strip rolling mill, using squeezing rollers arranged in the direction of strip travel behind vertical double rollers, which produce a tensile stress acting in the longitudinal direction.
- the method described above and the device are essentially known from DE 33 13 024 A1.
- This is a method and an apparatus for quenching continuous steel sheets, in particular heavy and medium-sized sheets, with simultaneous controlled straightening, in which the sheets are quenched in the warm state by at least two vertical double rollers arranged in a row in one plane be aligned. The sheet is then pulled by a quenching device under controlled tension from at least one double roller.
- the aim of this process is to scour continuous steel sheets exactly to the predetermined mechanical properties without them warping or warping, while at the same time reducing unevenness that is already present.
- the invention has for its object to expand the field of application of conventional sheet metal cooling systems to higher flatness of the sheet with increased cooling effect.
- the object is achieved according to the invention in that the metal strip or the sheet is displaced between a pre-straightening machine and a spray cooling under defined tensile stresses by regulating the tensile stress and that cooling is carried out between successive pinch roller pairs within the spray cooling and additionally controls the tensile stress becomes.
- This causes a plastic deformation immediately before the metal strip or sheet enters the cooling system.
- the plastic deformation reduces the incoming unevenness of the metal strip or sheet.
- Another advantage is the direct arrangement of the straightening process before cooling, which prevents the re-build-up of residual stresses and deformations due to the uneven cooling on the surface of the metal strip or sheet.
- the cooling effect is practically limited by the induction of stresses and related deformations in the sheet, due to the non-uniform cooling effect of the cooling medium (water) on the sheet surface.
- This (disadvantageous) effect is particularly evident when using higher cooling performance on thin and wide sheets.
- the critical product of a system is given by a sheet with the smallest thickness at maximum width and at the same time high cooling intensity.
- the intensity of the cooling is defined by a high temperature difference between the start and cooling stop temperature with a short cooling time.
- pinch rollers are supposed to hinder this effect of the deformation.
- the influence of this form of compensation is limited.
- the arrangement according to the invention of the Straightening machine before cooling causes plastic deformation and reduces incoming deformations and stresses immediately before cooling.
- the deformations when entering the cooling can be combated particularly effectively by regulating the tensile stress by switching the speed to the next, last, load-bearing pinch roller as the metal strip or sheet progresses.
- One embodiment consists in that the squeeze rolls are fixed with a division, a cooling unit being formed between two squeeze rolls depending on the division.
- this division is set to half a length of the resulting natural shape for a strip or sheet with the smallest thickness, maximum width and high cooling intensity.
- the device for controlled straightening and cooling of a wide metal strip running out of a hot strip rolling mill in particular of a steel strip or of a sheet metal, is equipped with vertical double roller pairs and pinch roller pairs following in the direction of strip travel, between each of which a cooling device is arranged.
- the cooling units are each designed for a high and a medium cooling intensity.
- the influence of the cooling can be further increased by providing the cooling unit with finely adjustable cooling elements in the outlet of the metal strip.
- the cooling can also be developed in such a way that the cooling unit is designed for a high and / or medium cooling capacity in the sense of a given product range.
- Another improvement of the invention consists in the fact that tensile stresses can also be generated between the last, supporting pinch rollers or the straightening rollers at the end of the metal strip or sheet and the pinch rollers or straightening rollers at the beginning of the metal strip or sheet.
- FFiigg .. 22AA is a perspective view of the steel strip or sheet with
- Fig. 2B is a side view of two spaced apart
- Fig. 4 is a view of an overall system for straightening and cooling.
- the metal in particular the steel strip 1 or the sheet metal is guided for controlled cooling and straightening using pinch rollers 5 arranged behind vertical double rollers 3 and 4 in the strip running direction 2 via a tensile stress 6 acting in the longitudinal direction (strip running direction 2).
- a tensile stress 6 acting in the longitudinal direction (strip running direction 2).
- the metal strip 1 is placed between a pre-straightening machine 7 and a spray cooling 8 under defined tensile stresses 6 by regulating the tension (via the rotary drive motors for straightening rollers) and within the spray cooling 8 the metal strip 1 is cooled between successive pinch roller pairs 5a and additionally the Tension 6 checked.
- the spray cooling 8 consists of cooling units 9 each arranged between two pairs of squeezing rollers 5a (FIG. 1).
- the tension 6 is controlled via a corresponding torque 11 by a feedback control 12 with (A) engagement of the pinch rollers 5 (i) to (i + nc). As soon as the belt end 1a passes through (B) engagement of the pinch rollers 5 (i + 1) to (i + nc + 1), the corresponding tension 6 is transmitted to the belt end 1a and only the comparison speed is measured outside the belt end 1a without using the feedback control 12. Both for the end of the strip 1a and for the beginning of the strip 1b, the tension 6 is regulated by switching the speed to the next, last, carrying pinch roller 5 with the passage of the metal strip 1 (see FIG. 1).
- the squeeze rollers 5 are arranged with a certain division 13, the cooling unit 9 being formed between two squeeze rollers 5 depending on the division 13.
- the division 13 can be based on a half length 14 of the resulting wavelength 15 for a metal strip 1 with the smallest thickness, maximum width and high cooling intensity.
- the typical wavelength 15 is set in the steel strip 11 (FIG. 2A).
- the cooling units 9 are each designed for a high or a medium cooling intensity (FIG. 2B), the division 13 corresponding to half the wavelength 15 (cf. FIG. 2B).
- the waveform 16 is made clear in FIGS. 2A and 2B by dotted lines 17. 3 shows the cooling effect of the different types of cooling units 9.
- the solid line represents the temperature profile in the strip or sheet center 20 and the dashed line represents the surface temperature 21.
- Spray sections 8a are used in sections (1).
- Cooling units 9 consisting of U-tube units 22 are provided in the outlet 18 of the steel strip 1.
- the temperature ⁇ T surface is still reached in the zone of the spray cooling units 8a.
- the required cooling-stop temperature is achieved in small steps by the U-tube units 22. A formation of martensite through surface supercooling is prevented above the temperature T-martensite.
- FIG. 4 an overall system is shown, in which the spray cooling 8 with the pinch roller pairs 5a and the cooling units 9 and behind them a laminar cooling device 25 follow in the belt running direction 2 following the pre-straightening machine 7.
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10163070 | 2001-12-20 | ||
DE10163070A DE10163070A1 (de) | 2001-12-20 | 2001-12-20 | Verfahren und Einrichtung zum kontrollierten Richten und Kühlen von aus einem Warmband-Walzwerk auslaufendem breiten Metallband, insbesondere von Stahlband oder Blech |
PCT/EP2002/013035 WO2003054236A1 (de) | 2001-12-20 | 2002-11-21 | Verfahren und einrichtung zum kontrollierten richten und kühlen von aus einem warmband-walzwerk auslaufendem breitem metallband, insbesondere von stahlband oder blech |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1456421A1 true EP1456421A1 (de) | 2004-09-15 |
EP1456421B1 EP1456421B1 (de) | 2006-05-31 |
Family
ID=7710240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02785402A Expired - Lifetime EP1456421B1 (de) | 2001-12-20 | 2002-11-21 | Verfahren und einrichtung zum kontrollierten richten und kühlen von aus einem warmband-walzwerk auslaufendem, breitem metallband, insbesondere von stahlband oder blech |
Country Status (13)
Country | Link |
---|---|
US (2) | US20050016643A1 (de) |
EP (1) | EP1456421B1 (de) |
JP (1) | JP4440643B2 (de) |
CN (1) | CN100402672C (de) |
AT (1) | ATE328123T1 (de) |
AU (1) | AU2002350708A1 (de) |
BR (1) | BR0214598A (de) |
CA (1) | CA2469073C (de) |
DE (2) | DE10163070A1 (de) |
ES (1) | ES2261757T3 (de) |
RU (1) | RU2307718C2 (de) |
UA (1) | UA77241C2 (de) |
WO (1) | WO2003054236A1 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4315951B2 (ja) * | 2005-12-26 | 2009-08-19 | 株式会社神戸製鋼所 | 溶接用鋼板 |
JP2011042814A (ja) * | 2009-08-19 | 2011-03-03 | Chugai Ro Co Ltd | 金属ストリップの冷却装置及び冷却方法 |
US9822422B2 (en) | 2009-09-24 | 2017-11-21 | Ati Properties Llc | Processes for reducing flatness deviations in alloy articles |
BR112012007752B1 (pt) | 2009-10-07 | 2021-07-13 | Nippon Steel Corporation | Método de resfriamento para laminação a quente |
EP2353742A1 (de) * | 2010-02-05 | 2011-08-10 | Siemens Aktiengesellschaft | Warmwalzstraße zum Walzen von Warmband, Verfahren zum Betrieb einer Warmwalzstraße zum Walzen von Warmband, Steuer- und/oder Regeleinrichtung |
EP2361699A1 (de) * | 2010-02-26 | 2011-08-31 | Siemens Aktiengesellschaft | Verfahren zur Kühlung eines Blechs mittels einer Kühlstrecke, Kühlstrecke und Steuer- und/oder Regeleinrichtung für eine Kühlstrecke |
CN101993995B (zh) * | 2010-11-26 | 2012-05-30 | 首钢总公司 | 超高强度带钢水淬冷却方法及装置 |
RU2456109C1 (ru) * | 2010-12-16 | 2012-07-20 | Валерий Никитич Гринавцев | Машина правки полосы |
RU2463122C2 (ru) * | 2010-12-16 | 2012-10-10 | Валерий Никитич Гринавцев | Способ правки полосы |
RU2474623C1 (ru) * | 2011-10-31 | 2013-02-10 | Валентин Николаевич Никитин | Способ производства высокопрочной листовой стали мартенситного класса и деформационно-термический комплекс для его осуществления |
KR101376565B1 (ko) * | 2011-12-15 | 2014-04-02 | (주)포스코 | 연속 소둔라인 급냉대의 스트립 온도제어 방법 및 장치 |
DE102012110010B4 (de) * | 2012-10-19 | 2016-09-01 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Vorrichtung und Verfahren zur kontinuierlichen Behandlung eines Metallbandes |
CN105483343B (zh) * | 2014-09-17 | 2017-06-23 | 宝山钢铁股份有限公司 | 用于改善钢板平直度的中厚板轧制生产线速度控制方法 |
CN104451117A (zh) * | 2014-09-23 | 2015-03-25 | 中冶赛迪工程技术股份有限公司 | 一种淬火板板形控制方法和装置 |
DE102017118244A1 (de) * | 2017-08-10 | 2019-02-14 | Thyssenkrupp Ag | Vorrichtung und Verfahren zur Herstellung eines Warmbands |
DE102017127470A1 (de) * | 2017-11-21 | 2019-05-23 | Sms Group Gmbh | Kühlbalken und Kühlprozess mit variabler Abkühlrate für Stahlbleche |
CN114959201B (zh) * | 2022-06-27 | 2023-10-27 | 江西省科学院应用物理研究所 | 一种金属材料分级退火冷却装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3604696A (en) * | 1968-12-10 | 1971-09-14 | Dorn Co The Van | Continuous quench apparatus |
FR2217425A1 (en) * | 1972-11-15 | 1974-09-06 | Creusot Loire | Quenching metal sheet under tension - average or thick sheet is rapidly cooled without warping |
JPS5792141A (en) * | 1980-11-27 | 1982-06-08 | Kawasaki Steel Corp | Continuous hardening device for steel plate |
US4813652A (en) * | 1981-11-26 | 1989-03-21 | Union Siderurgique Du Nord Et De L'est De La France (Usinor) | Plant for effecting the controlled cooling of metal sheets |
DE3313024A1 (de) * | 1983-04-12 | 1984-10-18 | Babcock-BSH AG vormals Büttner-Schilde-Haas AG, 4150 Krefeld | Verfahren und vorrichtung zum abschrecken von durchlaufenden stahlblechen, insbesondere von grob- oder mittelblechen, unter gleichzeitigem kontrolliertem richten |
ATE31327T1 (de) * | 1984-02-24 | 1987-12-15 | Dorn Co V | Verfahren und vorrichtung zur waermebehandlung von stahlplatten. |
US4826138A (en) * | 1984-02-24 | 1989-05-02 | Van Dorn Company | Apparatus for heat treating steel plates |
JPS611420A (ja) * | 1984-06-12 | 1986-01-07 | Kobe Steel Ltd | 熱間圧延厚鋼板の強制冷却方法およびその装置 |
CN1042348C (zh) * | 1992-12-09 | 1999-03-03 | 王德明 | 用非调质带钢制造淬水硬化钢输送带的方法 |
DE4437872C1 (de) * | 1994-10-22 | 1996-03-14 | Bwg Bergwerk Walzwerk | Verfahren zum Herstellen von Blechtafeln, insbesondere großformatigen Blechtafeln, und Vorrichtung |
WO2001064362A1 (fr) * | 2000-03-01 | 2001-09-07 | Nkk Corporation | Dispositif et procede de refroidissement d'une bande d'acier laminee a chaud et procede de fabrication de cette bande d'acier laminee a chaud |
-
2001
- 2001-12-20 DE DE10163070A patent/DE10163070A1/de not_active Withdrawn
-
2002
- 2002-11-21 UA UA20040705923A patent/UA77241C2/uk unknown
- 2002-11-21 BR BR0214598-7A patent/BR0214598A/pt not_active IP Right Cessation
- 2002-11-21 CN CNB028257057A patent/CN100402672C/zh not_active Expired - Lifetime
- 2002-11-21 JP JP2003554935A patent/JP4440643B2/ja not_active Expired - Lifetime
- 2002-11-21 US US10/498,652 patent/US20050016643A1/en not_active Abandoned
- 2002-11-21 AT AT02785402T patent/ATE328123T1/de active
- 2002-11-21 ES ES02785402T patent/ES2261757T3/es not_active Expired - Lifetime
- 2002-11-21 DE DE50207037T patent/DE50207037D1/de not_active Expired - Lifetime
- 2002-11-21 EP EP02785402A patent/EP1456421B1/de not_active Expired - Lifetime
- 2002-11-21 RU RU2004122098/02A patent/RU2307718C2/ru active
- 2002-11-21 CA CA2469073A patent/CA2469073C/en not_active Expired - Fee Related
- 2002-11-21 AU AU2002350708A patent/AU2002350708A1/en not_active Abandoned
- 2002-11-21 WO PCT/EP2002/013035 patent/WO2003054236A1/de active IP Right Grant
-
2011
- 2011-10-11 US US13/270,842 patent/US20120024435A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO03054236A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE50207037D1 (de) | 2006-07-06 |
UA77241C2 (en) | 2006-11-15 |
RU2004122098A (ru) | 2005-03-27 |
CN1606630A (zh) | 2005-04-13 |
CN100402672C (zh) | 2008-07-16 |
BR0214598A (pt) | 2004-11-03 |
JP4440643B2 (ja) | 2010-03-24 |
WO2003054236A1 (de) | 2003-07-03 |
CA2469073C (en) | 2011-10-11 |
ES2261757T3 (es) | 2006-11-16 |
CA2469073A1 (en) | 2003-07-03 |
JP2005512816A (ja) | 2005-05-12 |
US20120024435A1 (en) | 2012-02-02 |
RU2307718C2 (ru) | 2007-10-10 |
ATE328123T1 (de) | 2006-06-15 |
DE10163070A1 (de) | 2003-07-03 |
AU2002350708A1 (en) | 2003-07-09 |
US20050016643A1 (en) | 2005-01-27 |
EP1456421B1 (de) | 2006-05-31 |
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