US20120024435A1 - Method and device for controlled straightening and cooling of a wide metal strip, especially a steel strip or sheet metal, running out of a hot rolled strip rolling mill - Google Patents
Method and device for controlled straightening and cooling of a wide metal strip, especially a steel strip or sheet metal, running out of a hot rolled strip rolling mill Download PDFInfo
- Publication number
- US20120024435A1 US20120024435A1 US13/270,842 US201113270842A US2012024435A1 US 20120024435 A1 US20120024435 A1 US 20120024435A1 US 201113270842 A US201113270842 A US 201113270842A US 2012024435 A1 US2012024435 A1 US 2012024435A1
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- United States
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- cooling
- strip
- sheet
- metal strip
- tensile stress
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- 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
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- 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
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- 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
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- 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 concerns a method and device for controlled straightening and cooling of wide metal strip, especially steel strip or sheet, running out of a hot-rolled strip mill, with the use of pinch rolls, which are installed after (in the direction of strip flow) vertical double rolls and produce a tensile stress that acts in the longitudinal direction.
- the cooling devices used in practice which consist essentially of nozzle units or, for the aftercooling, of laminar water curtains, cannot really be improved any further.
- a U-tube is used for laminar cooling units.
- the highest attainable cooling intensities are obtained with nozzles and suitably selected parameters.
- the poor automatic control and regulation behavior is a disadvantage in general and at low flow rates in particular.
- the objective of the invention is to extend the range of application of conventional sheet cooling systems to obtain greater flatness of the sheet with an increased cooling effect.
- the cooling effect is practically limited by the induction of stresses and deformations associated with these stresses in the sheet due to the nonuniform cooling effect of the cooling medium (water) on the surface of the sheet.
- This (unfavorable) effect occurs especially with the use of a relatively high cooling intensity on sheets that are thin and at the same time wide.
- the critical product of a plant is defined by a sheet with the least thickness at the maximum width and at the same time high intensity of the cooling.
- the intensity of the cooling is defined by a high temperature difference between the initial and final cooling temperature using a short cooling time. In practice, pinch rolls are intended to hinder this deformation effect. However, the effect of this form of compensation is limited.
- the arrangement of the pre-straightening machine before the cooling installation in accordance with the invention brings about plastic deformation and reduces entry deformations and stresses directly before the cooling installation.
- the deformations on entry into the cooling installation can be combated especially effectively by adjusting the tensile stress by switching the speed to the respective next or last supporting pinch roll with progressive passage of the metal strip or sheet.
- the pinch rolls are set with a spacing such that a cooling unit is formed between two rolls, depending on the spacing.
- this spacing can be adjusted to a half-length of the resulting characteristic form for a strip or sheet with the least thickness, at maximum width and high cooling intensity.
- the device for the controlled straightening and cooling of a wide metal strip, especially a steel strip or sheet, running out of a hot-rolled strip mill is equipped with vertical pairs of double rolls and pairs of pinch rolls which follow them (in the direction of strip flow), between each of which a cooling unit is installed.
- the stated objective is achieved with a device of this type by installing a pre-straightening machine before the pairs of pinch rolls with the cooling units, between which a controlled tensile stress can be produced. This makes it possible to transmit a tensile force even before the cooling, so that the magnitude of the deformations that are present is already reduced here. An even more exact determination of the tensile stresses inside the cooling units then occurs.
- the cooling units are each designed for a high and an intermediate cooling intensity.
- the effect of the cooling can be increased still further by providing the cooling unit with finely adjustable cooling elements at the outlet of the metal strip.
- the cooling can be further developed in such a way that the cooling unit is designed for high and/or an intermediate cooling intensity in accordance with a predetermined product spectrum.
- FIG. 1 shows a system diagram of the cooling with pinch rolls and of the drive control with the tensile stresses produced.
- FIG. 2A shows a perspective view of the steel strip or sheet with distortions in the form of center waviness.
- FIG. 2B shows a side view of two pairs of pinch rolls arranged with a certain spacing distance.
- FIG. 3 shows the arrangement of the cooling devices for the given cooling intensity.
- FIG. 4 shows a view of a total installation for straightening and cooling.
- the metal strip is conveyed by a tensile stress 6 acting in the longitudinal direction (strip flow direction 2 ) for controlled cooling and straightening with the use of pinch rolls 5 arranged after (in the direction of strip flow 2 ) vertical double rolls 3 and 4 .
- the metal strip 1 is moved between a pre-straightening machine 7 and a splash cooling installation 8 under defined conditions of tensile stress 6 by adjustment of the tensile stress (by the straightening roll rotational drive motors).
- the metal strip 1 is then cooled inside the splash cooling installation between successive pairs of pinch rolls 5 a , and the tensile stress is additionally controlled.
- the splash cooling installation 8 comprises cooling units 9 installed between each two pairs of pinch rolls 5 a ( FIG.
- the tensile stress 6 is controlled via a suitable torque 11 by a feedback control system 12 , which is designated (A) action of the pinch rolls (i) to (i+nc). As soon as the trailing end 1 a of the strip passes through, which is designated (B) action of the pinch rolls 5 (i) to (i+nc), suitable tensile stress is transmitted to the trailing end 1 a of the strip, and only the comparison speed is still measured beyond the end 1 a of the strip without using the feedback control system 12 . Both for the trailing end 1 a of the strip and the leading end 1 b of the strip, the tensile stress 6 is adjusted by switching the speed to the respective next or last supporting pinch roll 5 with progressive passage of the metal strip (see FIG. 1 ).
- the pinch rolls 5 are installed with a certain spacing 13 , such that the cooling unit 9 is formed between two pinch rolls 5 , depending on the spacing 13 .
- the spacing 13 can be based on a half-length 14 of the resulting wavelength 15 for a metal strip with the least thickness, at maximum width and high cooling intensity.
- the typical wavelength 15 develops in the steel strip 11 ( FIG. 2A ).
- the cooling units are each designed for a high or an intermediate cooling intensity ( FIG. 2B ), such that the spacing 13 corresponds to the half wavelength 15 (cf. FIG. 2B ).
- the behavior of the wave 16 is clearly shown by the dotted lines 17 in FIGS. 2A and 2B .
- FIG. 3 shows the cooling effect of the different individual types of cooling devices 9 .
- the solid curve represents the behavior of the temperature 20 in the center of the strip or sheet, and the broken curve represents the surface temperature 21 .
- Splash cooling units 8 a are used in the sections ( 1 ).
- Cooling units 9 which consist of U-tube units 22 , are provided at the outlet 18 of the steel strip 1 .
- the temperature ⁇ T-surface is reached while still in the zone of the splash cooling units 8 a .
- the necessary cooling stop temperature is attained in small increments by the U-tube units 22 . Martensite formation by surface subcooling is prevented above the temperature T-martensite.
- Tensile stresses 6 can be produced in the same procedure between the last supporting pinch rolls 5 or straightening rolls 23 at the trailing end 1 a of the metal strip 1 or sheet and the pinch rolls 5 or the straightening rolls 24 at the leading end 1 b of the metal strip 1 .
- FIG. 4 shows a complete installation, in which, in the direction of strip flow 2 , the pre-straightening machine 7 is followed by the splash cooling installation 8 with the pairs of pinch rolls 5 a and the cooling units 9 and then by a laminar cooling installation 25 .
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Metal Rolling (AREA)
- Control Of Heat Treatment Processes (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
A method and device for controlled straightening and cooling of a wide metal strip, especially a steel strip or sheet metal, running out of a hot rolled strip rolling mill, using pinching rollers arranged in the moving direction of the strip behind vertical double rollers, said pinching rollers producing a tensile stress acting in a longitudinal direction. According to the invention, the range of use of conventional sheet metal cooling systems can be extended to obtain a more even surface of said steel strip with an increased cooling effect. This is achieved by displacing the metal strip or sheet metal between a pre-straightening machine and splash cooling facility in defined conditions of tensile stress by adjusting the tensile stress and by cooling said strip or sheet metal inside said splash cooling facility between successive pairs of pinching rollers and by additionally controlling the tensile stress.
Description
- The present application is a Continuation Application of U.S. patent application Ser. No. 10/498,652, filed Jun. 10, 2004, which is a 371 of International application PCT/EP02/013035, filed Nov. 21, 2002, which claims priority of DE 101 63 070.0, filed Dec. 20, 2001, the priority of these applications is hereby claimed and these applications are incorporated herein by reference.
- The invention concerns a method and device for controlled straightening and cooling of wide metal strip, especially steel strip or sheet, running out of a hot-rolled strip mill, with the use of pinch rolls, which are installed after (in the direction of strip flow) vertical double rolls and produce a tensile stress that acts in the longitudinal direction.
- The method and device described above are basically known from DE 33 13 024 A1, which discloses a method and a device for quenching passing steel sheet, especially heavy and medium sheet, with simultaneous controlled straightening, in which the sheet, before being quenched, straightened in a plane while hot by at least two vertical double rolls arranged one behind the other. The sheet is then drawn through a quenching installation under controlled tensile stress by at least one double roll. This method is designed to quench passing steel sheet exactly to the predetermined mechanical properties without the development of warpage or distortion and at the same to reduce roughness that is already present. Despite these measures, inadequate flatness of the sheet continues to occur due to inadequate application of tensile stress, unfavorable cooling, and other unfavorable control measures. The cooling devices used in practice, which consist essentially of nozzle units or, for the aftercooling, of laminar water curtains, cannot really be improved any further. In principle, a U-tube is used for laminar cooling units. Of course, the highest attainable cooling intensities are obtained with nozzles and suitably selected parameters. The poor automatic control and regulation behavior is a disadvantage in general and at low flow rates in particular.
- The objective of the invention is to extend the range of application of conventional sheet cooling systems to obtain greater flatness of the sheet with an increased cooling effect.
- In accordance with the invention, this objective is achieved by moving the metal strip or sheet between a pre-straightening machine and a splash cooling installation under defined conditions of tensile stress by adjustment of the tensile stress and by cooling the metal strip or sheet inside the splash cooling installation between successive pairs of pinch rolls and additionally controlling the tensile stress.
- This directly produces plastic deformation before the metal strip or sheet passes into the cooling installation. The plastic deformation improves the flatness of the entering metal strip or sheet. Another advantage is gained by the arrangement of the straightening process immediately before the cooling, which prevents renewed buildup of internal stresses and deformations due to the nonuniform cooling on the surface of the metal strip or sheet.
- The cooling effect is practically limited by the induction of stresses and deformations associated with these stresses in the sheet due to the nonuniform cooling effect of the cooling medium (water) on the surface of the sheet. This (unfavorable) effect occurs especially with the use of a relatively high cooling intensity on sheets that are thin and at the same time wide. The critical product of a plant is defined by a sheet with the least thickness at the maximum width and at the same time high intensity of the cooling. The intensity of the cooling is defined by a high temperature difference between the initial and final cooling temperature using a short cooling time. In practice, pinch rolls are intended to hinder this deformation effect. However, the effect of this form of compensation is limited. The arrangement of the pre-straightening machine before the cooling installation in accordance with the invention brings about plastic deformation and reduces entry deformations and stresses directly before the cooling installation.
- The deformations on entry into the cooling installation can be combated especially effectively by adjusting the tensile stress by switching the speed to the respective next or last supporting pinch roll with progressive passage of the metal strip or sheet.
- In one embodiment, the pinch rolls are set with a spacing such that a cooling unit is formed between two rolls, depending on the spacing.
- In a refinement of the invention, this spacing can be adjusted to a half-length of the resulting characteristic form for a strip or sheet with the least thickness, at maximum width and high cooling intensity.
- The device for the controlled straightening and cooling of a wide metal strip, especially a steel strip or sheet, running out of a hot-rolled strip mill is equipped with vertical pairs of double rolls and pairs of pinch rolls which follow them (in the direction of strip flow), between each of which a cooling unit is installed.
- In accordance with the invention, the stated objective is achieved with a device of this type by installing a pre-straightening machine before the pairs of pinch rolls with the cooling units, between which a controlled tensile stress can be produced. This makes it possible to transmit a tensile force even before the cooling, so that the magnitude of the deformations that are present is already reduced here. An even more exact determination of the tensile stresses inside the cooling units then occurs.
- In accordance with other features, the cooling units are each designed for a high and an intermediate cooling intensity.
- The effect of the cooling can be increased still further by providing the cooling unit with finely adjustable cooling elements at the outlet of the metal strip.
- The cooling can be further developed in such a way that the cooling unit is designed for high and/or an intermediate cooling intensity in accordance with a predetermined product spectrum.
- The invention can be further improved by also making it possible to produce tensile stresses between the last, supporting pinch rolls or the straightening rolls at the trailing end of the metal strip or sheet and the pinch rolls or the straightening rolls at the leading end of the metal strip or sheet.
- The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of the disclosure. For a better understanding of the invention, its operating advantages, specific objects attained by its use, reference should be had to the drawings and descriptive matter in which there are illustrated and described preferred embodiments of the invention.
- In the drawing:
-
FIG. 1 shows a system diagram of the cooling with pinch rolls and of the drive control with the tensile stresses produced. -
FIG. 2A shows a perspective view of the steel strip or sheet with distortions in the form of center waviness. -
FIG. 2B shows a side view of two pairs of pinch rolls arranged with a certain spacing distance. -
FIG. 3 shows the arrangement of the cooling devices for the given cooling intensity. -
FIG. 4 shows a view of a total installation for straightening and cooling. - The metal strip, especially the
steel strip 1 or sheet, is conveyed by atensile stress 6 acting in the longitudinal direction (strip flow direction 2) for controlled cooling and straightening with the use of pinch rolls 5 arranged after (in the direction of strip flow 2) vertical double rolls 3 and 4. In the process, themetal strip 1 is moved between a pre-straightening machine 7 and asplash cooling installation 8 under defined conditions oftensile stress 6 by adjustment of the tensile stress (by the straightening roll rotational drive motors). Themetal strip 1 is then cooled inside the splash cooling installation between successive pairs of pinch rolls 5 a, and the tensile stress is additionally controlled. Thesplash cooling installation 8 comprises cooling units 9 installed between each two pairs of pinch rolls 5 a (FIG. 1 ). While themetal strip 1 is entering atroller table speed 10, thetensile stress 6 is controlled via asuitable torque 11 by afeedback control system 12, which is designated (A) action of the pinch rolls (i) to (i+nc). As soon as the trailing end 1 a of the strip passes through, which is designated (B) action of the pinch rolls 5 (i) to (i+nc), suitable tensile stress is transmitted to the trailing end 1 a of the strip, and only the comparison speed is still measured beyond the end 1 a of the strip without using thefeedback control system 12. Both for the trailing end 1 a of the strip and the leadingend 1 b of the strip, thetensile stress 6 is adjusted by switching the speed to the respective next or last supporting pinch roll 5 with progressive passage of the metal strip (seeFIG. 1 ). - The pinch rolls 5 are installed with a
certain spacing 13, such that the cooling unit 9 is formed between two pinch rolls 5, depending on thespacing 13. For example, thespacing 13 can be based on a half-length 14 of the resultingwavelength 15 for a metal strip with the least thickness, at maximum width and high cooling intensity. Thetypical wavelength 15 develops in the steel strip 11 (FIG. 2A ). - The cooling units are each designed for a high or an intermediate cooling intensity (
FIG. 2B ), such that thespacing 13 corresponds to the half wavelength 15 (cf.FIG. 2B ). The behavior of thewave 16 is clearly shown by thedotted lines 17 inFIGS. 2A and 2B . -
FIG. 3 shows the cooling effect of the different individual types of cooling devices 9. In the graph of temperature as a function of time, the solid curve represents the behavior of thetemperature 20 in the center of the strip or sheet, and the broken curve represents thesurface temperature 21. Splash cooling units 8 a are used in the sections (1). Cooling units 9, which consist ofU-tube units 22, are provided at theoutlet 18 of thesteel strip 1. - On the basis of the temperature ΔT-center (1), the temperature in the center of the
steel strip 1 or the temperature ΔT-center (2) is reached. - The temperature ΔT-surface is reached while still in the zone of the splash cooling units 8 a. When the
U-tube units 22 are used, the necessary cooling stop temperature is attained in small increments by theU-tube units 22. Martensite formation by surface subcooling is prevented above the temperature T-martensite. - Tensile stresses 6 can be produced in the same procedure between the last supporting pinch rolls 5 or straightening rolls 23 at the trailing end 1 a of the
metal strip 1 or sheet and the pinch rolls 5 or the straightening rolls 24 at theleading end 1 b of themetal strip 1. -
FIG. 4 shows a complete installation, in which, in the direction ofstrip flow 2, the pre-straightening machine 7 is followed by thesplash cooling installation 8 with the pairs of pinch rolls 5 a and the cooling units 9 and then by alaminar cooling installation 25. - While specific embodiments of the invention have been shown and described in detail to illustrate the inventive principles, it will be understood that the invention may be embodied otherwise without departing from such principles.
Claims (9)
1. Method for controlled straightening and cooling of wide metal strip or sheet running out of a hot-rolled strip mill, with the use of pinch rolls, which are installed after (in the direction of strip flow) vertical double rolls and produce a tensile stress that acts in the longitudinal direction, wherein the metal strip or sheet is moved from a pre-straightening machine immediately to a splash cooling installation under defined conditions of tensile stress by adjustment of the tensile stress, and that the metal strip or sheet is cooled inside the splash cooling installation between successive pairs of pinch rolls, and the tensile stress is additionally controlled, whereby the metal strip or sheet is plastically deformed prior to entering the cooling installation.
2. Method according to claim 1 , wherein the tensile stress is regulated by switching over the speed with respect to each next, last supporting pinching roller with progressive transit of the metal strip or of the sheet.
3. Method according to claim 1 , wherein the pinching rollers are fixed at a spacing, wherein a cooling unit is formed between two pinching rollers depending on the spacing.
4. Method according to claim 3 , wherein the spacing is adjusted to a half-length of a resulting intrinsic shape for a metal strip or a sheet with smallest thickness at maximum width and high cooling intensity.
5. Device for controlled straightening and cooling of a wide metal strip or sheet running out of a hot-rolled strip mill, with vertical pairs of double rolls followed (in the direction of strip flow) by pairs of pinch rolls, between each of which a cooling unit is installed, wherein a pre-straightening machine is installed immediately before the pairs of pinch rolls with the cooling units, between which a controllable tensile stress can be produced, whereby the metal strip or sheet is plastically deformed prior to entering the cooling installation, wherein the metal strip or sheet is moved from a pre-straightening machine immediately to the cooling units under defined conditions of tensile stress by adjustment of the tensile stress.
6. Device according to claim 5 , wherein the cooling unit has finely adjustable cooling elements and is provided in an outlet for the metal strip.
7. Device according to claim 5 , wherein the cooling unit is designed for a high and/or medium cooling output in accordance with a predetermined product spectrum.
8. Device according to claim 5 , wherein tensile stresses can also be produced between the last, supporting pinch roll or the straightening roll at the trailing end of the metal strip or of the sheet and the pinch rollers or the straightening rollers at the leading end of the metal strip or sheet.
9. Device in accordance with claim 5 , wherein the cooling units are each designed for a high and an intermediate cooling intensity.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/270,842 US20120024435A1 (en) | 2001-12-20 | 2011-10-11 | Method and device for controlled straightening and cooling of a wide metal strip, especially a steel strip or sheet metal, running out of a hot rolled strip rolling mill |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10163070A DE10163070A1 (en) | 2001-12-20 | 2001-12-20 | Method and device for the controlled straightening and cooling of wide metal strip, in particular steel strip or sheet metal, emerging from a hot strip rolling mill |
DE10163070.0 | 2001-12-20 | ||
PCT/EP2002/013035 WO2003054236A1 (en) | 2001-12-20 | 2002-11-21 | Method and device for controlled straightening and cooling of a wide metal strip, especially a steel strip or sheet metal, running out of a hot rolled strip rolling mill |
US10/498,652 US20050016643A1 (en) | 2001-12-20 | 2002-11-21 | Method and device for controlled straightening and cooling of a wide metal strip, especially a steel strip or sheet metal, running out of a hot rolled strip rolling mill |
US13/270,842 US20120024435A1 (en) | 2001-12-20 | 2011-10-11 | Method and device for controlled straightening and cooling of a wide metal strip, especially a steel strip or sheet metal, running out of a hot rolled strip rolling mill |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/498,652 Continuation US20050016643A1 (en) | 2001-12-20 | 2002-11-21 | Method and device for controlled straightening and cooling of a wide metal strip, especially a steel strip or sheet metal, running out of a hot rolled strip rolling mill |
PCT/EP2002/013035 Continuation WO2003054236A1 (en) | 2001-12-20 | 2002-11-21 | Method and device for controlled straightening and cooling of a wide metal strip, especially a steel strip or sheet metal, running out of a hot rolled strip rolling mill |
Publications (1)
Publication Number | Publication Date |
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US20120024435A1 true US20120024435A1 (en) | 2012-02-02 |
Family
ID=7710240
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/498,652 Abandoned US20050016643A1 (en) | 2001-12-20 | 2002-11-21 | Method and device for controlled straightening and cooling of a wide metal strip, especially a steel strip or sheet metal, running out of a hot rolled strip rolling mill |
US13/270,842 Abandoned US20120024435A1 (en) | 2001-12-20 | 2011-10-11 | Method and device for controlled straightening and cooling of a wide metal strip, especially a steel strip or sheet metal, running out of a hot rolled strip rolling mill |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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US10/498,652 Abandoned US20050016643A1 (en) | 2001-12-20 | 2002-11-21 | Method and device for controlled straightening and cooling of a wide metal strip, especially a steel strip or sheet metal, running out of a hot rolled strip rolling mill |
Country Status (13)
Country | Link |
---|---|
US (2) | US20050016643A1 (en) |
EP (1) | EP1456421B1 (en) |
JP (1) | JP4440643B2 (en) |
CN (1) | CN100402672C (en) |
AT (1) | ATE328123T1 (en) |
AU (1) | AU2002350708A1 (en) |
BR (1) | BR0214598A (en) |
CA (1) | CA2469073C (en) |
DE (2) | DE10163070A1 (en) |
ES (1) | ES2261757T3 (en) |
RU (1) | RU2307718C2 (en) |
UA (1) | UA77241C2 (en) |
WO (1) | WO2003054236A1 (en) |
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EP2353742A1 (en) * | 2010-02-05 | 2011-08-10 | Siemens Aktiengesellschaft | Heat rolling train for rolling hot rolled strips, method for operating same to roll hot rolled strips, control and/or regulating device |
EP2361699A1 (en) * | 2010-02-26 | 2011-08-31 | Siemens Aktiengesellschaft | Method for cooling sheet metal with a cooling section, cooling section and control and/or regulating device for a cooling section |
CN101993995B (en) * | 2010-11-26 | 2012-05-30 | 首钢总公司 | Water quenching and cooling method and device for ultrahigh-strength strip steel |
RU2463122C2 (en) * | 2010-12-16 | 2012-10-10 | Валерий Никитич Гринавцев | Method of strip straightening |
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RU2474623C1 (en) * | 2011-10-31 | 2013-02-10 | Валентин Николаевич Никитин | Method of producing high-strength martensitic sheet steel and thermal strain complex to this end |
DE102012110010B4 (en) * | 2012-10-19 | 2016-09-01 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Apparatus and method for the continuous treatment of a metal strip |
CN105483343B (en) * | 2014-09-17 | 2017-06-23 | 宝山钢铁股份有限公司 | Medium and Heavy Plate Rolling Production linear velocity control method for improving steel plate flatness |
CN104451117A (en) * | 2014-09-23 | 2015-03-25 | 中冶赛迪工程技术股份有限公司 | Quenching plate shape control method and device |
DE102017118244A1 (en) * | 2017-08-10 | 2019-02-14 | Thyssenkrupp Ag | Apparatus and method for producing a hot strip |
DE102017127470A1 (en) * | 2017-11-21 | 2019-05-23 | Sms Group Gmbh | Chilled beams and cooling process with variable cooling rate for steel sheets |
CN114959201B (en) * | 2022-06-27 | 2023-10-27 | 江西省科学院应用物理研究所 | Metal material classified annealing cooling device |
CN117621423B (en) * | 2023-11-07 | 2024-05-14 | 东莞市首誉电子材料有限公司 | Preparation control method, device, equipment and medium of screen optical film |
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DE4437872C1 (en) * | 1994-10-22 | 1996-03-14 | Bwg Bergwerk Walzwerk | Method for producing metal sheets, in particular large-sized metal sheets, and device |
EP1210993B2 (en) * | 2000-03-01 | 2016-07-06 | JFE Steel Corporation | Device and method for cooling hot rolled steel band and method of manufacturing the hot rolled steel band |
-
2001
- 2001-12-20 DE DE10163070A patent/DE10163070A1/en not_active Withdrawn
-
2002
- 2002-11-21 RU RU2004122098/02A patent/RU2307718C2/en active
- 2002-11-21 AU AU2002350708A patent/AU2002350708A1/en not_active Abandoned
- 2002-11-21 DE DE50207037T patent/DE50207037D1/en not_active Expired - Lifetime
- 2002-11-21 JP JP2003554935A patent/JP4440643B2/en not_active Expired - Lifetime
- 2002-11-21 UA UA20040705923A patent/UA77241C2/en unknown
- 2002-11-21 ES ES02785402T patent/ES2261757T3/en not_active Expired - Lifetime
- 2002-11-21 CN CNB028257057A patent/CN100402672C/en not_active Expired - Lifetime
- 2002-11-21 WO PCT/EP2002/013035 patent/WO2003054236A1/en active IP Right Grant
- 2002-11-21 US US10/498,652 patent/US20050016643A1/en not_active Abandoned
- 2002-11-21 EP EP02785402A patent/EP1456421B1/en not_active Expired - Lifetime
- 2002-11-21 BR BR0214598-7A patent/BR0214598A/en not_active IP Right Cessation
- 2002-11-21 AT AT02785402T patent/ATE328123T1/en active
- 2002-11-21 CA CA2469073A patent/CA2469073C/en not_active Expired - Fee Related
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2011
- 2011-10-11 US US13/270,842 patent/US20120024435A1/en not_active Abandoned
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140350746A1 (en) * | 2011-12-15 | 2014-11-27 | Posco | Method and Apparatus for Controlling the Strip Temperature of the Rapid Cooling Section of a Continuous Annealing Line |
US9783867B2 (en) * | 2011-12-15 | 2017-10-10 | Posco | Method and apparatus for controlling the strip temperature of the rapid cooling section of a continuous annealing line |
Also Published As
Publication number | Publication date |
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CA2469073C (en) | 2011-10-11 |
JP4440643B2 (en) | 2010-03-24 |
DE10163070A1 (en) | 2003-07-03 |
DE50207037D1 (en) | 2006-07-06 |
UA77241C2 (en) | 2006-11-15 |
US20050016643A1 (en) | 2005-01-27 |
WO2003054236A1 (en) | 2003-07-03 |
EP1456421A1 (en) | 2004-09-15 |
JP2005512816A (en) | 2005-05-12 |
CN100402672C (en) | 2008-07-16 |
AU2002350708A1 (en) | 2003-07-09 |
CN1606630A (en) | 2005-04-13 |
EP1456421B1 (en) | 2006-05-31 |
RU2307718C2 (en) | 2007-10-10 |
ATE328123T1 (en) | 2006-06-15 |
CA2469073A1 (en) | 2003-07-03 |
BR0214598A (en) | 2004-11-03 |
RU2004122098A (en) | 2005-03-27 |
ES2261757T3 (en) | 2006-11-16 |
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