WO2009016767A1 - 熱鋼板の冷却装置、熱鋼板の冷却方法及びプログラム - Google Patents
熱鋼板の冷却装置、熱鋼板の冷却方法及びプログラム Download PDFInfo
- Publication number
- WO2009016767A1 WO2009016767A1 PCT/JP2007/065307 JP2007065307W WO2009016767A1 WO 2009016767 A1 WO2009016767 A1 WO 2009016767A1 JP 2007065307 W JP2007065307 W JP 2007065307W WO 2009016767 A1 WO2009016767 A1 WO 2009016767A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooling
- spray nozzle
- cooling water
- collision pressure
- hot steel
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
-
- 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
-
- 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
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
-
- 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
- B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
Definitions
- the present invention relates to an apparatus for controlling and cooling a hot steel sheet obtained by hot rolling while horizontally restraining it with a restraining roll, and more specifically, a hot steel sheet capable of continuously controlling a wide range of cooling capacity.
- a cooling device, a cooling method and program for a hot steel sheet We propose a cooling device, a cooling method and program for a hot steel sheet.
- a steel material in a high-temperature state immediately after being hot rolled is accelerated and cooled while passing through a rolling line, and the steel material has a predetermined cooling history. Is generally done.
- the cooling capacity required varies depending on the type and application of the steel material, and it is desired to develop a cooling system that can select a wide range of cooling capacity control with high accuracy.
- the cooling device As a cooling device capable of controlling the cooling capacity over a wide range, there is a cooling device using a two-fluid (air and water) nozzle.
- the two-fluid nozzle has a complicated nozzle structure and is prone to clogging, which increases equipment manufacturing costs and maintenance costs.
- air-water pressure control is complicated and it is difficult to keep the air-water ratio constant, and the cooling capacity changes depending on this air-water ratio.
- the above cooling device has a problem that it requires advanced control and equipment maintenance in order to perform accurate cooling capacity control.
- No. 1 shows a method in which the cooling device is partitioned into a plurality of cooling blocks in the direction of steel sheet transfer, and the supply of cooling water to each cooling block is controlled on and off for each cooling block or for each cooling block. .
- Japanese Patent Laid-Open No. Hei 10-29 10 19 discloses a cooling device that cools water by flowing cooling water along the longitudinal direction of the steel sheet. By moving the point where the cooling water contacts the steel sheet in the longitudinal direction of the steel sheet, A method for controlling the cooling capacity by changing the contact length between the steel plate and the steel sheet is shown. However, this is a method in which a gas is injected between the steel plate and the cooling water to move the contact point, so a gas with a lower density than water requires a very large flow rate. Running costs will be high.
- JP-A-7-157826 discloses a method for controlling the cooling performance over a wide range by adjusting the cooling water injection pitch from the cooling water nozzles arranged in the steel material conveyance direction. In this case, however, the pitch adjustment mechanism of the cooling water nozzle is required, which causes a problem that the manufacturing cost and maintenance cost of the cooling device are high. Disclosure of the invention The present invention is for solving the above-mentioned problems, and its purpose is related to an apparatus for controlling and cooling a hot steel sheet while being restrained by a restraining roll horizontally, and continuously controlling a wide range of cooling capacity. It is to propose an inexpensive hot steel plate cooling device, a hot steel plate cooling method, and a program that make it possible.
- the cooling device of the present invention includes a plurality of pairs of constraining rolls that horizontally restrain the hot steel plates, and supplies cooling water from a plurality of rows of spray nozzles to the upper and lower surfaces of the hot steel plates between adjacent pairs of constraining rolls.
- the cooling water collision pressure integral value which is the value obtained by integrating the nth power of the cooling water collision pressure in the direction of the passing plate between the pair of restraining rolls, is a slow cooling spray nozzle array
- a strong cooling spray nozzle row having a large integrated value of the cooling water collision pressure, a maximum cooling water collision pressure value of the slow cooling spray nozzle row, and a minimum cooling water collision pressure integral value of the strong cooling spray nozzle row.
- the thermal steel sheet cooling device is characterized in that the fluctuating regions of the cooling water collision pressure integral values of both spray nozzle arrays are made continuous. However, 0. 05 ⁇ n ⁇ 0.
- a strong cooling spray nozzle row may be disposed on the hot steel plate entrance side between the pair of restraining rolls, and further, the maximum cooling water collision pressure integrated value of the strong cooling spray nozzle row and the slow cooling spray nozzle.
- the integral values of the minimum cooling water collision pressures when the row and the strong cooling spray nozzle row are used simultaneously may be made equal.
- the hot steel plate is horizontally restrained by a plurality of pairs of restraining rolls, and is cooled from a plurality of rows of spray nozzles on the upper and lower surfaces of the hot steel plates between adjacent pairs of restraining rolls.
- the cooling device that performs this cooling method is a cooling water that is a value obtained by integrating the nth power of the cooling water collision pressure in the plate passing direction between the pair of restraining rolls.
- a slow cooling spray nozzle array having a small collision pressure integral value A strong cooling spray nozzle array having a large cooling water collision pressure integral value, a maximum cooling water collision pressure integral value of the strong cooling spray nozzle array, the slow cooling spray nozzle array, and the strong cooling spray nozzle array.
- a method for cooling a hot steel sheet characterized in that the minimum cooling water collision pressure integrated value when used simultaneously is set equal.
- Fig. 1 is a graph showing the relationship between the amount of water and the cooling capacity in the injection region of one nozzle.
- FIG. 2 is an explanatory diagram showing the nozzle and its injection region.
- Figure 3 is a table showing the amount of water, nozzle load pressure, injection range, and cooling water collision pressure for eight types of nozzles.
- FIG. 4 (a) is an explanatory diagram showing an injection region of an oval nozzle
- FIG. 4 (b) is an explanatory diagram showing an injection region of a full cone nozzle
- Fig. 5 is a graph showing the relationship between cooling water collision pressure and cooling capacity for the eight nozzles in Fig. 3.
- Fig. 6 is a graph showing the relationship between cooling water collision pressure and cooling capacity in the injection region of one nozzle.
- FIG. 7 is an explanatory diagram showing an outline of the configuration of the cooling device according to the present invention.
- FIG. 8 is a plan view showing a nozzle arrangement between a pair of restraining rolls in the cooling device.
- FIG. 9 is an explanatory diagram of the inside of the cooling device when only the slow cooling spray nozzle row is used.
- FIG. 10 is an explanatory diagram of the inside of the cooling device when only the strong cooling spray nozzle row is used.
- Fig. 11 is an explanatory diagram of the inside of the cooling device when the slow cooling spray nozzle row and the strong cooling spray nozzle row are used at the same time.
- Fig. 12 is a graph showing the relationship between the water density, nozzle load pressure, and cooling water collision pressure integral.
- Figure 13 is a graph showing the relationship between the cooling water volume density and the heat transfer coefficient when the steel surface temperature is 300.
- the cooling capacity distribution in the spray injection area is investigated. As shown in Fig. 1, the water amount difference in the single nozzle injection range is within 2%. However, it was found that a cooling capacity difference of 4% or more occurred. In other words, in the case of spray cooling, the factors that contribute to the cooling capacity are not limited to the amount of water, but various factors such as droplet velocity, droplet diameter, and droplet impact angle to the cooled object are acting in a complex manner. It seems to be.
- Fig. 1 shows cooling water from an oval nozzle (spray nozzle 1) with a flow rate of 100 L / min and a nozzle load pressure of 0.3 MPa, which is arranged at a position where the distance L from the cooling surface shown in Fig. 2 is 150 mm.
- the figure shows the dimensionless (normalized) divided by the value.
- cooling capacity rolled steel for general structure with a thickness of 20 mm heated to 900 as the object to be cooled. A cooling test was performed using the material (SS400), and the heat transfer coefficient measured when the steel surface temperature was 300 was used as the cooling capacity for evaluation.
- the present inventors have found that a cooling factor that can comprehensively represent various cooling factors including these water amounts is the collision pressure of the cooling water.
- the present inventors investigated the relationship between the cooling water collision pressure directly below the nozzle and the cooling capacity using eight types (A to H) of nozzles with different water amounts, nozzle load pressures, and injection ranges shown in the table of FIG.
- the oval nozzle 1 has an oval shape in which the spray injection region 2 is long in the negative direction
- the full cone nozzle 1 has a circular shape in the spray injection region 2.
- the cooling water collision pressure and the cooling capacity regardless of the type, specification, and injection area of the nozzle, and the following relational expression (1) can be derived.
- the heat transfer rate h [W / (m 2 ⁇ K)] (cooling capacity) can be obtained.
- h 33300 XP ° 1 (1)
- the heat transfer coefficient was proportional to the 0.1th power of the cooling water collision pressure.
- the heat transfer coefficient is considered to be proportional to the ⁇ power of the cooling water collision pressure.
- the value of ⁇ is considered to be in the range of 0.05 to 0.2.
- the cooling capacity can be controlled continuously by continuously changing the amount of cooling water supplied in this section.
- the nozzle load pressure is in the range of about 0.04 MPa to 0.3 MPa, and the flow rate adjustment range is about 1: 3 when expressed as a ratio of the minimum water amount to the maximum water amount.
- the collision pressure of the cooling water is about 1:10 to 1:20 when expressed as the ratio of the collision pressure at the minimum water volume and the collision pressure at the maximum water volume.
- a cooling control range with a wide cooling control range in which two types of spray nozzle arrays with different orifice shapes such that each cooling capacity range is continuous is arranged.
- Propose equipment a nozzle with a large integrated value of the cooling water collision pressure within the spray injection range at a nozzle load pressure of 0.3 MPa is defined as a strong cooling spray nozzle, and a small nozzle as a slow cooling spray nozzle.
- the integrated value of the cooling water collision pressure is the value obtained by integrating the nth power of the cooling water collision pressure in the direction of the plate in the pair of restraining rolls, and the unit is [MPa] n ⁇ m, (0. 05 ⁇ n ⁇ 0. 2) It becomes.
- Cooling uniformity is improved. This is thought to be because strong cooling immediately after the start of cooling can shorten the cooling time of the film boiling region, which tends to be non-uniform cooling.
- the cooling device 10 includes a plurality of constraining roll pairs 11 arranged in the horizontal direction along the plate passing direction of the hot steel plate 3, for example, as shown in FIG.
- Each pair of constraining rolls 11 is composed of two constraining rolls arranged above and below, and the hot steel plate 3 is transported while being sandwiched between the top and bottom constraining rolls.
- the strong cooling spray nozzle row J and the slow cooling spray nozzle row K are arranged vertically so as to sandwich the hot steel plate 3 on the conveyance path, respectively, and cooling water can be jetted onto the upper and lower surfaces of the hot steel plate 3. Further, as shown in FIG. 8, the strong cooling spray nozzles 12 and 13 and the slow cooling spray nozzles 13 are arranged in a line in the width direction orthogonal to the passing plate direction.
- the strong cooling spray nozzles 12 and the slow cooling spray nozzles 13 are not limited to one row, and may be a plurality of rows.
- FIG. 9 is an explanatory diagram showing a state in which only the strong cooling spray nozzle row J sprays cooling water between the adjacent restraint roll pairs 11 of the cooling device 10, and FIG. 10 shows the slow cooling spray nozzle row K
- Fig. 11 is an explanatory diagram showing a state in which the slow cooling spray nozzle row K and the strong cooling spray nozzle row J simultaneously inject the cooling water. is there.
- the nozzles 12 and 13 are arranged in each row J and K so that the integral value of the cooling water jet collision pressure in the plate direction is uniform in the width direction. Has been.
- the strong cooling spray spray area where the cooling water sprayed from the strong cooling spray nozzle 12 collides with the hot steel plate 3 is indicated by 12a and sprayed from the slow cooling spray nozzle 13
- the slow cooling spray spray area where the cooling water collides with the hot steel sheet 3 is shown by 13a.
- the nozzles 12 and 13 of the strong cooling spray nozzle row J and the slow cooling spray nozzle row K are used within the nozzle load pressure range set by the cooling water supply pump capacity as shown in Fig. 12.
- the nozzles 12 and 13 represent the cooling water collision pressure integral value of the slow cooling spray nozzle row K at the maximum value of the nozzle load pressure range of each slow cooling spray nozzle 13 (the maximum cooling water of the slow cooling spray nozzle row K).
- the collision pressure integral value is selected to be the same.
- the lower limit of the cooling water collision pressure integral value of the entire spray nozzle row K, J is the nozzle load pressure of the strong cooling spray nozzle 12.
- the cooling water collision pressure integral value of the strong cooling spray nozzle row J at the maximum value in the range (maximum cooling water collision pressure integral value of the strong cooling spray nozzle row J) was set to be equal.
- the strong cooling spray nozzle 12 and A continuous cooling capacity control range can be obtained when the cooling water is sprayed simultaneously using the slow cooling spray nozzle 13 and when the cooling water is sprayed using only the strong cooling spray nozzle 12.
- the setting to make the values equal is performed, for example, by a control unit 30 (shown in FIG. 7) that controls the cooling water collision pressure of the spray nozzles 12 and 13.
- the control unit 30 is a computer and has a program storage unit, and the cooling water collision pressure integrated value is set by executing the program P stored in the program storage unit.
- the control unit 30 is connected to some spray nozzle rows K and J by dotted lines for convenience, but can control the cooling water collision pressure of all the spray nozzles 12 and 13.
- the slow nozzle spray nozzle 13 is kept constant at the maximum nozzle load pressure, the strong cooling spray nozzle 12 is adjusted, and the spray nozzle row K, when the strong cooling spray nozzle 12 and the slow cooling spray nozzle 13 are used simultaneously.
- the lower limit value of the cooling water collision pressure integral value for J as a whole was set to be equal to the maximum cooling water collision pressure integral value for the strong cooling spray nozzle array J.
- the slow cooling spray nozzle 13 is set to the maximum nozzle load pressure, so adjust the strong cooling spray nozzle 12 to a value greater than the lower limit value.
- the cooling capacity range of the slow cooling spray nozzle row K the cooling capacity range of the strong cooling spray nozzle row J, and the cooling capacity range when using the strong cooling spray nozzle row J and the slow cooling spray nozzle row K at the same time.
- the water usage range does not necessarily have to be continuous.
- discontinuous parts of water consumption As an example, there are parts where the water density is discontinuous at 0.5 and 1.5 in Figure 12.
- the flow rate adjustment range when the present invention is applied is expressed as a ratio of the minimum water amount and the maximum water amount
- the slow cooling spray nozzle 13 and the strong cooling spray nozzle 12 each have a control range of about 1: 3.
- the flow rate adjustment range is 1: 9 to 1:10, which is the same range as that of the two-fluid spray described above.
- the cooling capacity control range when this invention is applied can be added as a cooling capacity control factor by selecting nozzles with different injection ranges, so 1: 3 to 1: 5 degree. And a wide cooling capacity control range.
- FIG. 13 shows the cooling capacity control range measured by the plate cooling test using the cooling device 10 of the present invention.
- a test piece use a general structural rolled steel (SS400) with a thickness of 20 dragon X width 300 M1 X length 200 M and a thermocouple placed at a depth of 1 mm from the cooling surface at the center of the test piece. Then, the plate was cooled from about 900 to about 1 oo: the heat transfer coefficient was calculated from the temperature history, and the heat transfer coefficient at each water density when the surface temperature was 300 was evaluated.
- SS400 general structural rolled steel
- the cooling capacity control range of the slow cooling spray nozzle 13 and the strong cooling spray nozzle 12 is continuous, the cooling capacity control range of the strong cooling spray nozzle 12, and the slow cooling spray nozzle 13
- the cooling capacity control range when using the strong cooling spray nozzle 12 simultaneously is continuous.
- the overall cooling capacity control range has achieved a wide range of 4 Industrial applicability
- a plurality of pairs of restraining holes for horizontally restraining the hot steel plate and the cooling water is sprayed from a plurality of rows of spray nozzles onto the upper and lower surfaces of the hot steel plate between the pair of restraining rolls.
- a cooling system for hot steel plates that cools steel plates, a slow cooling spray nozzle row and a strong cooling spray nozzle row are arranged, the maximum cooling water collision pressure integral value of the slow cooling spray nozzle row and the minimum cooling water of the strong cooling spray nozzle row.
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- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2007/065307 WO2009016767A1 (ja) | 2007-07-30 | 2007-07-30 | 熱鋼板の冷却装置、熱鋼板の冷却方法及びプログラム |
US12/086,728 US7981358B2 (en) | 2007-07-30 | 2007-07-30 | Cooling apparatus of hot steel plate, cooling method of hot steel plate, and program |
BRPI0702831-8A BRPI0702831A2 (pt) | 2007-07-30 | 2007-07-30 | aparelho de resfriamento de placa de aço quente, método de resfriamento de placa de aço quente, e programa |
KR1020087014839A KR101039174B1 (ko) | 2007-07-30 | 2007-07-30 | 열 강판의 냉각 장치, 열 강판의 냉각 방법 및 프로그램 |
CN2007800016417A CN101557886B (zh) | 2007-07-30 | 2007-07-30 | 热钢板的冷却装置和冷却方法 |
EP07791980A EP2047921B1 (en) | 2007-07-30 | 2007-07-30 | Apparatus for cooling hot steel sheet, method of cooling hot steel sheet and program therefor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2007/065307 WO2009016767A1 (ja) | 2007-07-30 | 2007-07-30 | 熱鋼板の冷却装置、熱鋼板の冷却方法及びプログラム |
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WO2009016767A1 true WO2009016767A1 (ja) | 2009-02-05 |
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PCT/JP2007/065307 WO2009016767A1 (ja) | 2007-07-30 | 2007-07-30 | 熱鋼板の冷却装置、熱鋼板の冷却方法及びプログラム |
Country Status (6)
Country | Link |
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US (1) | US7981358B2 (ja) |
EP (1) | EP2047921B1 (ja) |
KR (1) | KR101039174B1 (ja) |
CN (1) | CN101557886B (ja) |
BR (1) | BRPI0702831A2 (ja) |
WO (1) | WO2009016767A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8012406B2 (en) * | 2006-09-12 | 2011-09-06 | Nippon Steel Corporation | Method of arranging and setting spray cooling nozzles and hot steel plate cooling apparatus |
WO2011086676A1 (ja) * | 2010-01-14 | 2011-07-21 | トヨタ自動車株式会社 | ステータの冷却装置 |
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 |
TWI524951B (zh) | 2012-06-08 | 2016-03-11 | 新日鐵住金股份有限公司 | 熱軋鋼板用冷卻水之水擋裝置及水擋方法 |
EP2792428A1 (de) * | 2013-04-15 | 2014-10-22 | Siemens VAI Metals Technologies GmbH | Kühleinrichtung mit breitenabhängiger Kühlwirkung |
DE102014001146A1 (de) * | 2014-01-31 | 2015-08-06 | Loi Thermprocess Gmbh | Einrichtung zum Abkühlen von platten- oder bahnförmigem Blech aus Metall und Verfahren zur Wärmebehandlung |
CN105039672A (zh) * | 2015-05-26 | 2015-11-11 | 安徽安簧机械股份有限公司 | 一种锻造转向节冷却控温系统 |
CN105032958B (zh) * | 2015-08-24 | 2018-04-20 | 东北大学 | 应用道次间冷却工艺控制轧制的即时冷却系统及冷却方法 |
DE102017127470A1 (de) | 2017-11-21 | 2019-05-23 | Sms Group Gmbh | Kühlbalken und Kühlprozess mit variabler Abkühlrate für Stahlbleche |
CN111492071A (zh) * | 2017-12-20 | 2020-08-04 | 杰富意钢铁株式会社 | 厚钢板的冷却装置及冷却方法以及厚钢板的制造设备及制造方法 |
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JPH07157826A (ja) | 1993-12-03 | 1995-06-20 | Kawasaki Steel Corp | 熱間搬送材の冷却方法及びその装置 |
JP2007105792A (ja) | 2005-09-16 | 2007-04-26 | Nippon Steel Corp | スプレー冷却ノズルの配置設定方法および熱鋼板冷却装置 |
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US4132393A (en) * | 1976-06-30 | 1979-01-02 | Nippon Steel Corporation | Apparatus for cooling hot steel plate and sheet |
JP3406013B2 (ja) | 1993-02-18 | 2003-05-12 | 川崎製鉄株式会社 | スプレー冷却方法 |
JP3287254B2 (ja) | 1997-01-30 | 2002-06-04 | 日本鋼管株式会社 | 高温鋼板の冷却方法および装置 |
JPH10291019A (ja) | 1997-04-17 | 1998-11-04 | Nkk Corp | 高温鋼板の冷却方法および高温鋼板の冷却装置 |
JPH11172401A (ja) * | 1997-12-05 | 1999-06-29 | Mitsubishi Heavy Ind Ltd | 帯材の冷却方法及び装置 |
DE19963186B4 (de) * | 1999-12-27 | 2005-04-14 | Siemens Ag | Verfahren zur Steuerung und/oder Regelung der Kühlstrecke einer Warmbandstrasse zum Walzen von Metallband und zugehörige Vorrichtung |
JP4321325B2 (ja) | 2004-03-29 | 2009-08-26 | Jfeスチール株式会社 | 連続鋳造鋳片の二次冷却方法 |
JP3959744B2 (ja) | 2004-10-05 | 2007-08-15 | 株式会社新潟ティーエルオー | 生体組織中の微量元素分析装置 |
JP4063813B2 (ja) | 2004-10-18 | 2008-03-19 | 新日本製鐵株式会社 | 熱間圧延鋼板のミスト冷却装置 |
-
2007
- 2007-07-30 BR BRPI0702831-8A patent/BRPI0702831A2/pt active IP Right Grant
- 2007-07-30 CN CN2007800016417A patent/CN101557886B/zh active Active
- 2007-07-30 EP EP07791980A patent/EP2047921B1/en active Active
- 2007-07-30 US US12/086,728 patent/US7981358B2/en active Active
- 2007-07-30 WO PCT/JP2007/065307 patent/WO2009016767A1/ja active Application Filing
- 2007-07-30 KR KR1020087014839A patent/KR101039174B1/ko active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH07157826A (ja) | 1993-12-03 | 1995-06-20 | Kawasaki Steel Corp | 熱間搬送材の冷却方法及びその装置 |
JP2007105792A (ja) | 2005-09-16 | 2007-04-26 | Nippon Steel Corp | スプレー冷却ノズルの配置設定方法および熱鋼板冷却装置 |
Also Published As
Publication number | Publication date |
---|---|
BRPI0702831A2 (pt) | 2011-03-15 |
EP2047921A1 (en) | 2009-04-15 |
KR20090029178A (ko) | 2009-03-20 |
US7981358B2 (en) | 2011-07-19 |
EP2047921B1 (en) | 2013-02-13 |
CN101557886B (zh) | 2011-09-14 |
CN101557886A (zh) | 2009-10-14 |
EP2047921A4 (en) | 2010-02-17 |
KR101039174B1 (ko) | 2011-06-03 |
US20100219565A1 (en) | 2010-09-02 |
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