EP1538228A1 - Procédé et Dispositif de refroidissement d'une bande d'acier - Google Patents

Procédé et Dispositif de refroidissement d'une bande d'acier Download PDF

Info

Publication number
EP1538228A1
EP1538228A1 EP03447278A EP03447278A EP1538228A1 EP 1538228 A1 EP1538228 A1 EP 1538228A1 EP 03447278 A EP03447278 A EP 03447278A EP 03447278 A EP03447278 A EP 03447278A EP 1538228 A1 EP1538228 A1 EP 1538228A1
Authority
EP
European Patent Office
Prior art keywords
tubes
cooling
strip
band
cooling fluid
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.)
Withdrawn
Application number
EP03447278A
Other languages
German (de)
English (en)
French (fr)
Inventor
Stéphane Lecomte
André Fouarge
Denis Bouquegneau
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.)
ArcelorMittal France SA
Original Assignee
Cockerill Sambre SA
USINOR SA
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 Cockerill Sambre SA, USINOR SA filed Critical Cockerill Sambre SA
Priority to EP03447278A priority Critical patent/EP1538228A1/fr
Priority to KR1020067010764A priority patent/KR101089082B1/ko
Priority to CA2544269A priority patent/CA2544269C/en
Priority to PL04797129T priority patent/PL1687455T3/pl
Priority to PT04797129T priority patent/PT1687455E/pt
Priority to JP2006540104A priority patent/JP2007512431A/ja
Priority to DK04797129T priority patent/DK1687455T3/da
Priority to CNB2004800354852A priority patent/CN100465303C/zh
Priority to AU2004294469A priority patent/AU2004294469B2/en
Priority to ES04797129T priority patent/ES2282918T3/es
Priority to EP04797129A priority patent/EP1687455B1/fr
Priority to DE602004005362T priority patent/DE602004005362T2/de
Priority to AT04797129T priority patent/ATE356891T1/de
Priority to BRPI0416333A priority patent/BRPI0416333B1/pt
Priority to RU2006124519/02A priority patent/RU2356949C2/ru
Priority to PCT/BE2004/000167 priority patent/WO2005054524A1/fr
Publication of EP1538228A1 publication Critical patent/EP1538228A1/fr
Priority to US11/442,934 priority patent/US7645417B2/en
Withdrawn legal-status Critical Current

Links

Images

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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • 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
    • 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
    • C21D9/5735—Details
    • 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
    • C21D1/63—Quenching devices for bath 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
    • 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

Definitions

  • the present invention relates to a device for carrying out the cooling of a steel strip, as part of an annealing process continuously.
  • this cooling is achieved by means of submerged water jets.
  • This operation of cooling can be carried out consecutively to a first cooling operation in a water bath boiling.
  • Continuous annealing is a treatment thermochemical that is applied to steel strips after cold rolling.
  • the "strip" of steel is the product steel industry which, when cut, will produce used metal sheets especially for the manufacture of automobile bodies, carcasses of household appliances, etc.
  • the continuous annealing process consists of scroll the steel strip in an oven where it is exposed to controlled heating and cooling.
  • steel strip circulates vertically, according to a series of successive strands, amounts and descendants, and thus scrolls sequentially through the various stages of treatment.
  • the cooling phase plays a particularly crucial role since it allows, in some cases, reduce the concentration of elements expensive alloys needed to achieve particular microscopic structures, such as of type "dual phase", multiphase, "HLE” (High Limit Elastic), etc.
  • the cooling process corresponds therefore to a metallurgical and economic issue not negligible.
  • the temperature of the band of steel at the outlet of the boiling water bath must remain greater than about 300 ° C.
  • the temperature of the band becomes lower at this temperature, the film of steam becomes unstable and one goes into boiling called nucleus.
  • nucleus In the latter regime, neighboring regions of the strip are subjected to different heat fluxes, which creates important temperature differences. These temperature gradients induce in the steel of mechanical constraints, which may create plastic deformations, therefore permanent and to lead to flatness defects.
  • the strip is first cooled in a water bath whose temperature is above 60 ° C, up to temperature between 200 and 500 ° C, range of temperatures in which occurs the transition between film boiling and nucleate boiling.
  • a water bath whose temperature is above 60 ° C, up to temperature between 200 and 500 ° C, range of temperatures in which occurs the transition between film boiling and nucleate boiling.
  • JP-A-60 009834 uses a set of cooling ramps, arranged on both sides of the steel strip, and immersed in a water tank whose temperature is between 60 and 70% of the boiling temperature. For a configuration given the spray bars, a laminar flow is generated, which avoids the formation of a film of steam in the vicinity of the steel strip.
  • Another document proposes to use the jets impact pressure in order to eliminate the deformations of the band during quenching (see JP-A-11 193418).
  • the applicant recommends applying on both sides of the steel strip a pressure of at least 500 N / cm 2 .
  • the present invention aims to achieve a so-called quenching operation, typically at a speed greater than 1000 ° C / s, applicable to flat metallurgical materials, preferably of steel, in the form of cold rolled strips.
  • This quenching operation must be carried out works by means of jets of cold water, whose temperature is preferably between 0 ° C and 50 ° C, said jets being immersed.
  • the aim of the invention is to ensure conditions of cooling as homogeneous as possible over the entire width of the steel band, by the mastery of the flows within the device.
  • the temperature of the band at the entrance the device must be between 750 ° C and 350 ° C and the temperature at the outlet must be between 0 ° C and 150 ° C.
  • a first object of the present invention a cooling device, to achieve a quenching operation during the annealing treatment continuous operation of a flat product or metallurgical strip, preferably a steel strip, characterized in that said device comprises a plurality of tubes arranged essentially horizontally and symmetrically from on both sides of the strip along the project a cooling fluid to the band at through a slot or a plurality of holes.
  • the fluid of cooling is liquid water maintained at a temperature below 50 ° C.
  • the device is located in essentially vertical strand (angular deviation from vertically less than 30 °), rising or falling and more preferably, the device is located in strand vertical amount while being directly preceded by a water tank at the boiling point.
  • the invention will advantageously be work on an installation where the metallurgical product at treat has a scroll speed between 0.25m / s and 20m / s, and a thickness of between 0.1mm and 10mm.
  • An important feature of the invention lies in the fact that the cooling tubes are dimensioned in such a way that the ejection speed of the cooling fluid is homogeneous over the entire bandwidth.
  • the ratio between the passage section of a tube and the free section of this tube is greater than 1
  • the speed distribution is such that the relative difference between the maximum speed (V max ) and the minimum speed (v min ) of ejection according to the width of the tube is less than 5% or ⁇ max - ⁇ min ⁇ max ⁇ 0.05.
  • the cooling tubes are immersed.
  • said tubes have a rectangular section.
  • the report from one side to the adjacent side of the section rectangular is between 0.1 and 10 and the thickness tubes is between 0.25 times and 10 times the diameter of the holes or the thickness of the slot, in order to control the consistency of the jet, the ratio between the thickness tubes and the diameter of the holes being if necessary still preferably equal to 2/3.
  • said device is provided in its part lower sealing means, preferably an airlock double pair of rollers, allowing both the passage of the band and the creation of a limiting pressure drop at least the leaks down the box of cooling.
  • the distance (A) between each tube and the band is between 50mm and 200mm.
  • the invention advantageously makes it possible to avoid local boiling phenomena by choosing a specific flow rate of the cooling fluid on one side of the strip of between 250 and 1000 m 3 per hour and per m 2 .
  • the maximum specific flow per face was about 580 m 3 per hour per m 2 .
  • the coolant injected by the tubes is evacuated between them, the distance (B) between two successive tubes being identical for all the tubes, the pressure drop being less than 150mm from water column.
  • the device for cooling system is provided with a weir whose height is at least that of the upper jet, so that all jets are immersed.
  • the upper tube is equipped a dam whose height is at least equal to the sum from the thickness of the water slide (H) to the weir and the water column height ( ⁇ H) corresponding to the loss of load between the tubes at maximum flow rate.
  • the tubes are fed with fluid from cooling starting with the most tube lower, or halfway up the plurality of tubes, said tubes being optionally calibrated to compensate load losses.
  • a second subject of the present invention relates to a quenching process during the continuous annealing treatment of a flat product or a metallurgical strip, preferably a steel strip, using a device according to any one of the preceding claims, to achieve a cooling power of between 1000kW / m 2 and 10000kW / m 2 per face of metallurgical product.
  • the temperature of the band at the input of the device is between 350 ° C and 750 ° C and the temperature at the outlet is between 50 ° C and 450 ° C, preferably between 50 ° C and 100 ° C or between 350 and 450 ° C.
  • Figure 1 schematically represents a sectional view of the cooling device according to the present invention.
  • Figure 2 schematically represents a provision of the holes for the projection of water on the steel strip in the device of the present invention.
  • FIG. 3 graphically illustrates the thermal performance of the cooling device according to the invention.
  • FIG. 4 illustrates the performances of said device in terms of flatness of the steel strip.
  • Figures 5 and 6 illustrate the impact of the uniformity of cooling on the homogeneity of mechanical properties of the steel strip.
  • Figure 5 relates to a steel of the family "dual phase”
  • Figure 6 relates to a steel of the family of steels Multiphase.
  • Figure 7 gives schematically the different positions of the specimens taken according to the width of the sheet, for carrying out the tests relating to Figures 5 and 6.
  • Figure 8 shows the parameters allowing to calculate the index of flatness, these parameters characterizing the sinusoid to which is assimilated the longitudinal profile of the strip at the edge.
  • the device for cooling consists of a set of tubes 1, so-called “ramps” or “cooling ramps”, arranged symmetrically on both sides of the steel strip cool. These ramps are submerged and fed laterally in cooling fluid. Their section is preferably rectangular. In the rest of the presentation the invention, the terms “tubes” and “ramps” will be indistinctly used.
  • this sealing system located in the lower part of the device, which allows both the passage of the band of steel 2 and the creation of a maximum pressure drop of in order to minimize the leakage rate of the fluid from cooling down the box.
  • this sealing system consists of a double pair of rollers 3, applied against the band of steel and positioned symmetrically thereto. Between the rollers, we inject a fluid that we can check the pressure and / or the temperature.
  • Cooling ramps are located at a distance A from the pass line of the band 2. For reasons of space, on the one hand, and in order to limit the total flow in the system, for equivalent performance, on the other hand, the distance maximum between the band and the cooling ramps is fixed at 200mm.
  • a space B is left between two ramps successive stages so that the water injected by the ramps can to be evacuated between them. This guarantees a flow as homogeneous as possible according to the width of the band steel.
  • the choice of distance B results from a compromise between a specific cooling power P maximum, the specific power being defined as the cooling power per unit area and per tape face to cool, and a minimal pressure drop through the evacuation channels, in order to ensure a sufficiently fast renewal of the fluid of cooling in the vicinity of the sheet, and thus avoid the formation of local boiling zones in the vicinity of the bandaged.
  • the distance B is chosen identical between two successive ramps for all ramps, to ensure identical flow conditions in front of all the spray booms. This allows to obtain a vertical homogeneity of the flow. In this way, the cooling fluid injected by a given ramp is evacuated through channels directly adjacent to this ramp. This avoids creating preferential paths and the passage time of the fluid is minimized cooling in the vicinity of the band, still for avoid local formation of boiling zones.
  • Each cooling ramp 1 is provided, on the face exposed to the strip, of at least one slot or a set of holes, as shown in the FIG. 2, intended for the projection of the fluid of cooling to the tape.
  • the distance between two holes successive ones must be such that flow in the near neighborhood of the band can be likened to that of a slot.
  • the ejection speed of the fluid must be sufficient to avoid forming boiling zones in the vicinity Of the band.
  • This ejection speed V is chosen in function of the distance A with respect to the band and is typically between 0 and 10 m / s.
  • the device or cooling box Downstream of the evacuation channels, the device or cooling box includes a spillway 4, over the entire width of the box and whose height corresponds to the jet level of the last ramp, which guarantees that under all conditions of operation, the last ramp is submerged at the same title than the others.
  • the cooling performances of the device were measured under industrial conditions by thermal balance on the basis of the following quantities: temperatures of the steel strip at the inlet and the outlet of the device, length of the section cooling and scrolling speed of the steel strip through the device.
  • Figure 3 shows that the specific cooling power, expressed in kW per square meter and per strip face, is a linear function of the specific flow rate, itself expressed in cubic meters per hour and per square meter for the two cumulative faces. Under the conditions envisaged here, the specific power is between 4000 and 6000kW / m 2 and per product face.
  • Figure 4 illustrates the performance of the device with regard to the flatness of the band steel. They are the image of the homogeneity of the cooling and therefore the control of flows in the device. The characterization of the flatness concerns here long banks.
  • Each point of the figure represents an operating point of the device - defined by the specific cooling power associated - at a given moment during the test campaign industrial.
  • a flatness index expressed in "I" units.
  • An "I” unit corresponds to a relative elongation of 1mm per 100m of steel band.
  • the longitudinal profile of the strip at the edge can be likened to a sinusoid, of wavelength L and of amplitude X.
  • FIGS. 5 and 6 there is shown respectively the breaking load, the yield stress (Fig. 6 only) and the elongation at 80% of the load break. It can be concluded from these observations that there is a good homogeneity of the mechanical properties according to width of the band.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Coating With Molten Metal (AREA)
EP03447278A 2003-12-01 2003-12-01 Procédé et Dispositif de refroidissement d'une bande d'acier Withdrawn EP1538228A1 (fr)

Priority Applications (17)

Application Number Priority Date Filing Date Title
EP03447278A EP1538228A1 (fr) 2003-12-01 2003-12-01 Procédé et Dispositif de refroidissement d'une bande d'acier
ES04797129T ES2282918T3 (es) 2003-12-01 2004-11-25 Procedimiento y dispositivo de enfriamiento de una banda de acero.
EP04797129A EP1687455B1 (fr) 2003-12-01 2004-11-25 Procede et dispositif de refroidissement d'une bande d'acier
PL04797129T PL1687455T3 (pl) 2003-12-01 2004-11-25 Sposób i urządzenie do chłodzenia taśmy stalowej
PT04797129T PT1687455E (pt) 2003-12-01 2004-11-25 Processo e dispositivo para o arrefecimento de uma banda de aço.
JP2006540104A JP2007512431A (ja) 2003-12-01 2004-11-25 鋼ストリップを冷却する方法及び装置
DK04797129T DK1687455T3 (da) 2003-12-01 2004-11-25 Fremgangsmåde og anordning til afköling af et stålbånd
CNB2004800354852A CN100465303C (zh) 2003-12-01 2004-11-25 用于对钢带进行冷却的方法和装置
AU2004294469A AU2004294469B2 (en) 2003-12-01 2004-11-25 Method and device for cooling a steel strip
KR1020067010764A KR101089082B1 (ko) 2003-12-01 2004-11-25 강 스트립 냉각용 방법 및 장치
CA2544269A CA2544269C (en) 2003-12-01 2004-11-25 Method and device for cooling a steel strip
DE602004005362T DE602004005362T2 (de) 2003-12-01 2004-11-25 Kühlprozess und -vorrichtung für eine stahlplatte
AT04797129T ATE356891T1 (de) 2003-12-01 2004-11-25 Kühlprozess und -vorrichtung für eine stahlplatte
BRPI0416333A BRPI0416333B1 (pt) 2003-12-01 2004-11-25 dispositivo de resfriamento
RU2006124519/02A RU2356949C2 (ru) 2003-12-01 2004-11-25 Устройство и способ охлаждения стальной полосы
PCT/BE2004/000167 WO2005054524A1 (fr) 2003-12-01 2004-11-25 Procede et dispositif de refroidissement d'une bande d'acier
US11/442,934 US7645417B2 (en) 2003-12-01 2006-05-30 Method and device for cooling a steel strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03447278A EP1538228A1 (fr) 2003-12-01 2003-12-01 Procédé et Dispositif de refroidissement d'une bande d'acier

Publications (1)

Publication Number Publication Date
EP1538228A1 true EP1538228A1 (fr) 2005-06-08

Family

ID=34443178

Family Applications (2)

Application Number Title Priority Date Filing Date
EP03447278A Withdrawn EP1538228A1 (fr) 2003-12-01 2003-12-01 Procédé et Dispositif de refroidissement d'une bande d'acier
EP04797129A Active EP1687455B1 (fr) 2003-12-01 2004-11-25 Procede et dispositif de refroidissement d'une bande d'acier

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP04797129A Active EP1687455B1 (fr) 2003-12-01 2004-11-25 Procede et dispositif de refroidissement d'une bande d'acier

Country Status (16)

Country Link
US (1) US7645417B2 (zh)
EP (2) EP1538228A1 (zh)
JP (1) JP2007512431A (zh)
KR (1) KR101089082B1 (zh)
CN (1) CN100465303C (zh)
AT (1) ATE356891T1 (zh)
AU (1) AU2004294469B2 (zh)
BR (1) BRPI0416333B1 (zh)
CA (1) CA2544269C (zh)
DE (1) DE602004005362T2 (zh)
DK (1) DK1687455T3 (zh)
ES (1) ES2282918T3 (zh)
PL (1) PL1687455T3 (zh)
PT (1) PT1687455E (zh)
RU (1) RU2356949C2 (zh)
WO (1) WO2005054524A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103849734A (zh) * 2012-12-06 2014-06-11 宝山钢铁股份有限公司 基于板形的淬火装置流量控制方法及其检测与控制装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2940978B1 (fr) * 2009-01-09 2011-11-11 Fives Stein Procede et section de refroidissement d'une bande metallique en defilement par projection d'un liquide
KR101451814B1 (ko) * 2012-12-20 2014-10-16 주식회사 포스코 강판 열처리용 급냉 장치
TWI616537B (zh) * 2015-11-19 2018-03-01 財團法人金屬工業研究發展中心 金屬材熱處理方法
BR112020007266B1 (pt) * 2017-10-31 2023-10-31 Jfe Steel Corporation Instalação e método para produzir placa de aço
US20230193442A1 (en) * 2017-11-17 2023-06-22 Sms Group Gmbh Method for the preoxidation of strip steel in a reaction chamber arranged in a furnace chamber
CN107754148A (zh) * 2017-12-08 2018-03-06 中国空气动力研究与发展中心高速空气动力研究所 超声速射流灭火组件及灭火器
WO2021024021A1 (en) * 2019-08-06 2021-02-11 Arcelormittal Device for cooling a steel strip

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724826A (en) * 1970-07-03 1973-04-03 Nippon Kokan Kk Method and apparatus for water quenching metal strips
US4052235A (en) * 1974-12-24 1977-10-04 Nippon Kokan Kabushiki Kaisha Method of preventing oxidation during water quenching of steel strip
US4065329A (en) * 1975-01-17 1977-12-27 Centre De Recherches Metallurgiques-Centrum Voor Research In De Metallurgie Continuous heat treatment of cold rolled steel strip
US4113523A (en) * 1973-07-25 1978-09-12 Nippon Kokan Kabushiki Kaisha Process of making high tension cold-reduced al-killed steel excellent in accelerated aging property
JPS55110739A (en) * 1979-02-19 1980-08-26 Nippon Kokan Kk <Nkk> Method for cooling strip steel in continuous annealing process
JPS5672128A (en) * 1979-11-19 1981-06-16 Nippon Steel Corp Cooling method of steel band in continuous annealing line
EP0086331A1 (en) * 1982-01-13 1983-08-24 Nippon Steel Corporation Continuous heat treating line for mild and high tensile strength stell strips or sheets
JPS609834A (ja) * 1983-06-28 1985-01-18 Nippon Steel Corp 鋼ストリツプの冷却方法及びその装置
US4704167A (en) * 1985-02-21 1987-11-03 Nippon Steel Corporation Method and apparatus for cooling steel strip
JPH11193418A (ja) * 1997-12-29 1999-07-21 Kobe Steel Ltd 平坦性に優れた高強度冷延鋼板の製造方法
EP1300478A1 (fr) * 2001-10-05 2003-04-09 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Procédé et dispositif de refroidissement acceleré en recuit continu

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5253712A (en) * 1975-10-30 1977-04-30 Nippon Kokan Kk <Nkk> Equipment for continuous annealing containingoverage treatment
JPS5785923A (en) 1980-11-14 1982-05-28 Nippon Kokan Kk <Nkk> Coolant for metal
JPS59153843A (ja) * 1983-02-18 1984-09-01 Nippon Kokan Kk <Nkk> ストリップの冷却装置
JPS59172759A (ja) * 1983-03-22 1984-09-29 Mitsubishi Electric Corp ゲ−トタ−ンオフサイリスタモジユ−ル
JPS61217531A (ja) * 1985-03-22 1986-09-27 Kawasaki Steel Corp 鋼帯の冷却方法
CA1266602A (en) 1985-07-25 1990-03-13 Kuniaki Sato Method and apparatus for cooling steel strips
JPS62238334A (ja) 1986-04-07 1987-10-19 Kawasaki Steel Corp 連続焼鈍炉における鋼帯の冷却方法
JPS63110555A (ja) * 1986-10-29 1988-05-16 Hitachi Ltd 燃料電池の積層体
JPS63145722A (ja) 1986-12-09 1988-06-17 Kawasaki Steel Corp 連続焼鈍ラインの冷却装置
BR9702207A (pt) * 1996-05-23 1999-07-20 Nippon Steel Corp Sistema de resfriamento para resfriar uma tira de maneira uniforme na direção da largura da tira em um processo de tratamento térmico de tira contínua
JPH11172401A (ja) * 1997-12-05 1999-06-29 Mitsubishi Heavy Ind Ltd 帯材の冷却方法及び装置
CN2334511Y (zh) * 1998-06-16 1999-08-25 冶金工业部钢铁研究总院 一种用于中厚钢板或钢带热轧后的冷却装置

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724826A (en) * 1970-07-03 1973-04-03 Nippon Kokan Kk Method and apparatus for water quenching metal strips
US4113523A (en) * 1973-07-25 1978-09-12 Nippon Kokan Kabushiki Kaisha Process of making high tension cold-reduced al-killed steel excellent in accelerated aging property
US4052235A (en) * 1974-12-24 1977-10-04 Nippon Kokan Kabushiki Kaisha Method of preventing oxidation during water quenching of steel strip
US4065329A (en) * 1975-01-17 1977-12-27 Centre De Recherches Metallurgiques-Centrum Voor Research In De Metallurgie Continuous heat treatment of cold rolled steel strip
JPS55110739A (en) * 1979-02-19 1980-08-26 Nippon Kokan Kk <Nkk> Method for cooling strip steel in continuous annealing process
JPS5672128A (en) * 1979-11-19 1981-06-16 Nippon Steel Corp Cooling method of steel band in continuous annealing line
EP0086331A1 (en) * 1982-01-13 1983-08-24 Nippon Steel Corporation Continuous heat treating line for mild and high tensile strength stell strips or sheets
JPS609834A (ja) * 1983-06-28 1985-01-18 Nippon Steel Corp 鋼ストリツプの冷却方法及びその装置
US4704167A (en) * 1985-02-21 1987-11-03 Nippon Steel Corporation Method and apparatus for cooling steel strip
JPH11193418A (ja) * 1997-12-29 1999-07-21 Kobe Steel Ltd 平坦性に優れた高強度冷延鋼板の製造方法
EP1300478A1 (fr) * 2001-10-05 2003-04-09 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Procédé et dispositif de refroidissement acceleré en recuit continu

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
"Cold rolled steel sheets - Technology and products in Japan -", 21 March 2001, THE IRON AND STEEL INSTITUTE OF JAPAN (ISIJ), TOKYO (JP), XP002275853, 7016 *
D. BOUQUEGNEAU ET AL.: "Production d'aciers à haute résistance par un dispositif de refroidissement à turbulence contrôlée", LA REVUE DE MÉTALLURGIE CIT, vol. 2003, no. 07-08, August 2003 (2003-08-01), pages 697 - 705, XP002275852 *
PATENT ABSTRACTS OF JAPAN vol. 004, no. 173 (C - 032) 29 November 1980 (1980-11-29) *
PATENT ABSTRACTS OF JAPAN vol. 005, no. 136 (C - 069) 28 August 1981 (1981-08-28) *
PATENT ABSTRACTS OF JAPAN vol. 009, no. 119 (C - 282) 23 May 1985 (1985-05-23) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 12 29 October 1999 (1999-10-29) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103849734A (zh) * 2012-12-06 2014-06-11 宝山钢铁股份有限公司 基于板形的淬火装置流量控制方法及其检测与控制装置
CN103849734B (zh) * 2012-12-06 2015-08-26 宝山钢铁股份有限公司 基于板形的淬火装置流量控制方法及其检测与控制装置

Also Published As

Publication number Publication date
DE602004005362D1 (de) 2007-04-26
EP1687455A1 (fr) 2006-08-09
DK1687455T3 (da) 2007-05-29
PT1687455E (pt) 2007-05-31
KR20060128880A (ko) 2006-12-14
AU2004294469A1 (en) 2005-06-16
US7645417B2 (en) 2010-01-12
CN100465303C (zh) 2009-03-04
EP1687455B1 (fr) 2007-03-14
AU2004294469B2 (en) 2009-07-16
RU2006124519A (ru) 2008-01-27
CA2544269A1 (en) 2005-06-16
JP2007512431A (ja) 2007-05-17
CA2544269C (en) 2012-03-13
BRPI0416333B1 (pt) 2017-05-16
ES2282918T3 (es) 2007-10-16
ATE356891T1 (de) 2007-04-15
CN1886524A (zh) 2006-12-27
RU2356949C2 (ru) 2009-05-27
WO2005054524A1 (fr) 2005-06-16
KR101089082B1 (ko) 2011-12-07
PL1687455T3 (pl) 2007-08-31
BRPI0416333A (pt) 2007-01-09
US20060243357A1 (en) 2006-11-02
DE602004005362T2 (de) 2007-11-29

Similar Documents

Publication Publication Date Title
EP2100673B1 (fr) Procédé et dispositif de soufflage de gaz sur une bande en défilement.
JP4586791B2 (ja) 熱延鋼帯の冷却方法
EP1687455B1 (fr) Procede et dispositif de refroidissement d&#39;une bande d&#39;acier
EP1655383B1 (fr) Procédé et dispositif de limitation de la vibration de bandes d&#39;acier ou d&#39;aluminium dans des zones de refroidissement par soufflage de gaz ou d&#39;air
EP0761829B1 (fr) Dispositif de refroidissement d&#39;un produit laminé
JP2012051013A (ja) 熱鋼板の水切り装置および水切り方法
EP3555324B1 (fr) Procede et section de refroidissement rapide d&#39;une ligne continue de traitement de bandes metalliques
JP5146006B2 (ja) 連続鋳造における二次冷却方法
FR2833871A1 (fr) Procede et installation de fabrication de bandes metalliques a partir de bandes coulees directement a partir de metal liquide
EP2826570B1 (fr) Systeme de pre-refroidissement avec reglage interne pilote
EP0141761B1 (fr) Procédé de refroidissement modulé minimisant les déformations des produits plats métallurgiques
EP1300478B1 (fr) Procédé et dispositif de refroidissement acceleré en recuit continu
EP1029933B1 (fr) Dispositif d&#39;échange de chaleur avec un produit plat
EP3397786A1 (fr) Dispositif et procede pour realiser une oxydation controlee de bandes metalliques dans un four de traitement en continu
JPH10263672A (ja) 高温鋼板の冷却装置
BE423985A (zh)
MXPA06006161A (en) Method and device for cooling a steel strip
EP2173918B1 (fr) Installation de revetement d&#39;une bande metallique
BE419364A (zh)
BE429804A (zh)
BE457875A (zh)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: USINOR S.A.

17P Request for examination filed

Effective date: 20051021

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ARCELOR FRANCE

17Q First examination report despatched

Effective date: 20070530

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20110422