EP1634657A1 - Steuerbares kühlverfahren für eine dicke stahlplatte, durch das steuerbare kühlverfahren hergestellte dicke stahlplatte und kühlvorrichtung für die dicke stahlplatte - Google Patents

Steuerbares kühlverfahren für eine dicke stahlplatte, durch das steuerbare kühlverfahren hergestellte dicke stahlplatte und kühlvorrichtung für die dicke stahlplatte Download PDF

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Publication number
EP1634657A1
EP1634657A1 EP04745851A EP04745851A EP1634657A1 EP 1634657 A1 EP1634657 A1 EP 1634657A1 EP 04745851 A EP04745851 A EP 04745851A EP 04745851 A EP04745851 A EP 04745851A EP 1634657 A1 EP1634657 A1 EP 1634657A1
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EP
European Patent Office
Prior art keywords
cooling
steel plate
control
width direction
edges
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
Application number
EP04745851A
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English (en)
French (fr)
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EP1634657B1 (de
EP1634657A4 (de
Inventor
Satoshi Intell. Prop. Dept.JFE Steel Corp. UEOKA
Kenji c/o Intellectual Property Department IHARA
Yoshinori Intellectual Property Department YUGE
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JFE Steel Corp
Original Assignee
JFE Steel Corp
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Publication date
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Publication of EP1634657A4 publication Critical patent/EP1634657A4/de
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Publication of EP1634657B1 publication Critical patent/EP1634657B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • B21B37/76—Cooling control on the run-out table
    • 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
    • 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
    • C21D11/00—Process control or regulation for heat treatments
    • C21D11/005—Process control or regulation for heat treatments for 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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • 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

Definitions

  • Japanese Unexamined Patent Application Publication No. 10-58026 discloses the following technique for cooling a hot steel plate: A plurality of cooling water screens are allowed to collide with the surface of the steel plate at high velocity, the plurality of cooling water screens being parallel to each other and formed at a predetermined angle to the traveling direction of the steel plate and at predetermined intervals in the width direction of the steel plate.
  • the cooling water is allowed to collide with collision regions and then evenly splits up into right and left to form flow paths along the surface of the steel plate.
  • the collision regions are disposed so that the ends of each of the collision regions do not overlap with each other but are continuous as seen from the traveling direction of the steel plate.
  • the front section in the control-cooling device includes masking members capable of limiting the amount of water used for the edges of the steel plate in the width direction, the masking members being disposed at the edges of the steel plate in the width direction and disposed in each zone, and each of the masking members independently blocks cooling water for each of the edges of the steel plate in the width direction per zone, per upper surface, or per lower surface.
  • the temperatures at the edges of the steel plate in the width direction and at the middle of the steel plate are identical at the end of cooling.
  • the known process is disadvantageous in that, as described below, the material quality at the edges of the steel plate in the width direction is different from that at the middle of the steel plate because the cooling rate at the edges of the steel plate in the width direction is lower than that at the middle of the steel plate.
  • Fig. 5 shows temperature histories in uniformizing the temperature distribution of a steel plate in the width direction with a auxiliary cooling device before control cooling and then performing control cooling so that the same cooling rate is achieved from the edges to the middle of the steel plate in the width direction.
  • the cooling rates at the edges and the middle of the steel plate in the width direction are also identical during control cooling, thus achieving the same effect as that described in Fig. 4.
  • cooling water should be discharged at a water current density of 1,200 L/min.m 2 or higher. More preferably, at a water current density of 1,500 L/min.m 2 or higher, nucleate-boiling cooling can be achieved more successfully. From the viewpoint of facility cost and running cost, the water current density is preferably 3,000 L/min.m 2 or less.
  • slit jet cooling means that cooling is performed by discharging a high-speed stream of water from a slit nozzle for discharging cooling water, i.e., a slit jet cooling nozzle. In slit jet cooling, the momentum of water and the cooling rate are relatively high.
  • a cooling device including the slit jet cooling nozzle is referred to as "slit jet cooling unit".
  • the number of cooling zones calculated is not always an integer. For example, when the number of cooling zones is calculated to be 1.4, a near-integer zone, i.e., zone 1 is used. This is different from the case of the control of the steel plate in the width direction. For example, if cooling water is discharged to only the upper surface of the steel plate, warpage may occur because of the temperature difference between the upper and lower surfaces. The warpage at the top and tail ends in the longitudinal direction is not preferable because the warpage is difficult to correct with a roller leveler or the like in a subsequent correcting step.
  • the middle of the steel plate in the width direction should be cooled by 40°C to 50°C without cooling the edges of the steel plate in the width direction.
  • the target amount of cooling is very small. Therefore, the cooling rate is decreased to perform cooling for a relatively long period of time, thus resulting in ease of control with high accuracy.
  • the uniformity of the temperature distribution of the steel plate in the width direction can be higher than that in the first embodiment.
  • facility that can decrease the temperature of the steel plate by about 40°C to 50°C should be disposed before the control-cooling device.
  • the facility can be installed at low cost.
  • Each of the masking plates had a length of 300 mm, a width of 350 mm, and a thickness of 7 mm. Each of the masking plates was disposed at 15° to horizontal so that cooling water blocked with the masking plates did not fall to the steel plate again.
  • a masking plate used in an auxiliary cooling device was an L-shaped Zn-Ni-plated steel plate such that the masking members can block cooling water across the entire length (10 m) of the auxiliary cooling device.
  • Each of the masking members had a length of 10 m, a width of 350 mm, a thickness of 7 mm, and a height of 50 mm.
  • four masking plates were disposed on the left, right, top and bottom of the steel plate.
  • the masking member was significantly long, deflection due to its own weight may occur.
  • the masking member was processed in L-shape, and ribs were attached at intervals of 500 mm.
  • the masking members were disposed so that each of the plate segments in the vertical direction was disposed inwardly in the width direction. Thus, cooling water blocked with the masking members did not fall to the steel plate.
  • Inventive example 3 is an example corresponding to the second embodiment.
  • the apparatus described in Fig. 17 was used. Cooling was performed with the auxiliary cooling device 10 so that a variation in the temperature distribution of the steel plate in the width direction was uniformized. Then, cooling was performed with the control-cooling device 20 so that a variation in the temperature distribution of the top and tail ends of the steel plate in the longitudinal direction was uniformized.
  • the auxiliary cooling device 10 shown in Fig. 17 had a length of 10 m and can discharge cooling water at a current density of 100 L/min.m 2 . In this case, the cooling rate was about 4°C/s.
  • the temperature at the each of the edges of the steel plate in the width direction was 720°C.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Control Of Metal Rolling (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP04745851A 2003-06-13 2004-06-08 Steuerbares kühlverfahren für eine dicke stahlplatte, durch das steuerbare kühlverfahren hergestellte dicke stahlplatte und kühlvorrichtung für die dicke stahlplatte Expired - Lifetime EP1634657B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003170006 2003-06-13
PCT/JP2004/008294 WO2004110662A1 (ja) 2003-06-13 2004-06-08 厚鋼板の制御冷却方法、その制御冷却方法で製造された厚鋼板及びその冷却装置

Publications (3)

Publication Number Publication Date
EP1634657A1 true EP1634657A1 (de) 2006-03-15
EP1634657A4 EP1634657A4 (de) 2007-04-18
EP1634657B1 EP1634657B1 (de) 2012-02-22

Family

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EP04745851A Expired - Lifetime EP1634657B1 (de) 2003-06-13 2004-06-08 Steuerbares kühlverfahren für eine dicke stahlplatte, durch das steuerbare kühlverfahren hergestellte dicke stahlplatte und kühlvorrichtung für die dicke stahlplatte

Country Status (6)

Country Link
EP (1) EP1634657B1 (de)
JP (1) JP5218435B2 (de)
KR (1) KR100780503B1 (de)
CN (1) CN100404154C (de)
TW (1) TWI286089B (de)
WO (1) WO2004110662A1 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2072157A1 (de) * 2006-10-30 2009-06-24 JFE Steel Corporation Verfahren zum kühlen eines warmgewalzten stahlbands
WO2010037481A2 (de) 2008-09-30 2010-04-08 Sms Siemag Ag Verfahren und vorrichtung zum kühlen eines vorbandes oder bandes eines metallstrangs in einem warmwalzwerk
CN102121063A (zh) * 2010-07-29 2011-07-13 边新孝 一种方扁材生产线喷射冷却系统
WO2014164115A1 (en) * 2013-03-11 2014-10-09 Novelis Inc. Improving the flatness of a rolled strip
WO2017017150A1 (de) 2015-07-28 2017-02-02 Hydro Aluminium Rolled Products Gmbh Verfahren und vorrichtung zur planheitsadaptiven temperaturänderung von metallbändern
FR3060021A1 (fr) * 2016-12-14 2018-06-15 Fives Stein Procede et section de refroidissement rapide d'une ligne continue de traitement de bandes metalliques
CN112570450A (zh) * 2019-09-30 2021-03-30 宝钢湛江钢铁有限公司 一种厚板轧线及其生产方法
US11148182B2 (en) 2017-03-31 2021-10-19 Nippon Steel Corporation Cooling device for hot rolled steel sheet and cooling method for the same
US11781198B2 (en) 2016-12-07 2023-10-10 Ebner Industrieofenbau Gmbh Temperature control device for the temperature control of a component

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KR100778680B1 (ko) * 2006-12-07 2007-11-22 주식회사 포스코 열간압연장치 및 그 방법
JP4674646B2 (ja) * 2009-06-30 2011-04-20 住友金属工業株式会社 鋼板の冷却装置、熱延鋼板の製造装置、及び鋼板の製造方法
WO2011065290A1 (ja) * 2009-11-24 2011-06-03 住友金属工業株式会社 熱延鋼板の製造装置、および熱延鋼板の製造方法
JP5741165B2 (ja) * 2011-04-12 2015-07-01 Ｊｆｅスチール株式会社 熱鋼板の下面冷却装置
CN102759935A (zh) * 2011-04-25 2012-10-31 蔺桃 一种新型冷却控制方法
KR101498890B1 (ko) * 2012-06-28 2015-03-05 현대제철 주식회사 냉각장치의 에지마스크 제어방법
CN103272847A (zh) * 2013-06-05 2013-09-04 浙江兆隆合金股份有限公司 智能式制冷型金属复合轧制辊系统
CN105234191B (zh) * 2015-10-30 2017-03-22 华中科技大学 一种层流冷却温度控制方法
WO2017130508A1 (ja) 2016-01-28 2017-08-03 Ｊｆｅスチール株式会社 鋼板の温度制御装置及び温度制御方法
TWI690375B (zh) * 2017-04-17 2020-04-11 日商日本製鐵股份有限公司 熱軋鋼板之冷卻裝置以及熱軋鋼板之冷卻方法
KR102180809B1 (ko) * 2018-12-17 2020-11-19 주식회사 포스코 금속소재 냉각장치
CN110527809B (zh) * 2019-08-26 2020-12-22 武汉科技大学 降低残余应力的热轧高强度带钢制备方法
CN114472548B (zh) * 2020-10-23 2024-06-04 宝山钢铁股份有限公司 一种减小超长板轧制过程中头尾温差的系统及方法
CN113617854A (zh) * 2021-08-26 2021-11-09 宝钢湛江钢铁有限公司 一种tmcp钢板尾部板形控制的方法
CN113732083B (zh) * 2021-08-31 2023-12-01 日钢营口中板有限公司 一种提高热轧钢板瓢曲性能的超快冷方法
CN114606367B (zh) * 2022-01-26 2023-06-16 南京钢铁股份有限公司 一种适合中板生产的超快冷板型控制方法

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JPS62112733A (ja) * 1985-11-09 1987-05-23 Nippon Steel Corp 熱間圧延鋼板の冷却方法
JPH0663636A (ja) * 1992-08-18 1994-03-08 Kawasaki Steel Corp 熱延鋼板の予備冷却装置
JPH06184623A (ja) * 1992-12-18 1994-07-05 Nippon Steel Corp 厚鋼板の冷却方法
JPH06254616A (ja) * 1993-03-05 1994-09-13 Nippon Steel Corp 形状の優れた厚鋼板の冷却方法およびその装置
JPH0871630A (ja) * 1994-09-09 1996-03-19 Kawasaki Steel Corp 高温金属板の冷却方法
JPH11267737A (ja) * 1998-03-18 1999-10-05 Nkk Corp 厚鋼板の製造方法

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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8051695B2 (en) 2006-10-30 2011-11-08 Jfe Steel Corporation Method for cooling hot strip
EP2072157A1 (de) * 2006-10-30 2009-06-24 JFE Steel Corporation Verfahren zum kühlen eines warmgewalzten stahlbands
EP2072157A4 (de) * 2006-10-30 2015-04-29 Jfe Steel Corp Verfahren zum kühlen eines warmgewalzten stahlbands
US9539629B2 (en) 2008-09-30 2017-01-10 Sms Group Gmbh Method and device for cooling a leader or band of a metal strand in a hot-rolling mill
KR101279387B1 (ko) * 2008-09-30 2013-07-04 에스엠에스 지마크 악티엔게젤샤프트 열간 압연기에서 금속 스트랜드의 조압연 스트립 또는 스트립을 냉각하기 위한 냉각 방법 및 그 장치
WO2010037481A3 (de) * 2008-09-30 2010-07-15 Sms Siemag Ag Verfahren und vorrichtung zum kühlen eines vorbandes oder bandes eines metallstrangs in einem warmwalzwerk
WO2010037481A2 (de) 2008-09-30 2010-04-08 Sms Siemag Ag Verfahren und vorrichtung zum kühlen eines vorbandes oder bandes eines metallstrangs in einem warmwalzwerk
CN102121063A (zh) * 2010-07-29 2011-07-13 边新孝 一种方扁材生产线喷射冷却系统
CN102121063B (zh) * 2010-07-29 2012-09-05 边新孝 一种方扁材生产线喷射冷却系统
WO2014164115A1 (en) * 2013-03-11 2014-10-09 Novelis Inc. Improving the flatness of a rolled strip
US9889480B2 (en) 2013-03-11 2018-02-13 Novelis Inc. Flatness of a rolled strip
US10130979B2 (en) 2013-03-11 2018-11-20 Novelis Inc. Flatness of a rolled strip
EP2969279B1 (de) 2013-03-11 2017-11-15 Novelis Inc. Erhöhung der flachheit eines walzbandes
WO2017017150A1 (de) 2015-07-28 2017-02-02 Hydro Aluminium Rolled Products Gmbh Verfahren und vorrichtung zur planheitsadaptiven temperaturänderung von metallbändern
DE102015112293A1 (de) 2015-07-28 2017-02-02 Hydro Aluminium Rolled Products Gmbh Verfahren und Vorrichtung zur planheitsadaptiven Temperaturänderung von Metallbändern
US10676807B2 (en) 2015-07-28 2020-06-09 Hydro Aluminium Rolled Products Gmbh Method and device for changing the temperature of metal strips in a flatness-adaptive manner
US11781198B2 (en) 2016-12-07 2023-10-10 Ebner Industrieofenbau Gmbh Temperature control device for the temperature control of a component
FR3060021A1 (fr) * 2016-12-14 2018-06-15 Fives Stein Procede et section de refroidissement rapide d'une ligne continue de traitement de bandes metalliques
WO2018108747A1 (fr) * 2016-12-14 2018-06-21 Fives Stein Procede et section de refroidissement rapide d'une ligne continue de traitement de bandes metalliques
US11230748B2 (en) 2016-12-14 2022-01-25 Fives Stein Method and section for quick cooling of a continuous line for treating metal belts
US11148182B2 (en) 2017-03-31 2021-10-19 Nippon Steel Corporation Cooling device for hot rolled steel sheet and cooling method for the same
CN112570450A (zh) * 2019-09-30 2021-03-30 宝钢湛江钢铁有限公司 一种厚板轧线及其生产方法
CN112570450B (zh) * 2019-09-30 2022-03-01 宝钢湛江钢铁有限公司 一种厚板轧线及其生产方法

Also Published As

Publication number Publication date
TWI286089B (en) 2007-09-01
KR100780503B1 (ko) 2007-11-29
WO2004110662A1 (ja) 2004-12-23
JP2010110823A (ja) 2010-05-20
CN100404154C (zh) 2008-07-23
TW200523046A (en) 2005-07-16
EP1634657B1 (de) 2012-02-22
KR20060018254A (ko) 2006-02-28
JP5218435B2 (ja) 2013-06-26
EP1634657A4 (de) 2007-04-18
CN1805803A (zh) 2006-07-19

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