WO2019101486A1 - Kühlbalken und kühlprozess mit variabler abkühlrate für stahlbleche - Google Patents
Kühlbalken und kühlprozess mit variabler abkühlrate für stahlbleche Download PDFInfo
- Publication number
- WO2019101486A1 WO2019101486A1 PCT/EP2018/079856 EP2018079856W WO2019101486A1 WO 2019101486 A1 WO2019101486 A1 WO 2019101486A1 EP 2018079856 W EP2018079856 W EP 2018079856W WO 2019101486 A1 WO2019101486 A1 WO 2019101486A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooling
- nozzles
- full
- cooling rate
- sheet
- 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.)
- Ceased
Links
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
- 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
-
- 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
-
- 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
-
- 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
-
- 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
- B21B2261/21—Temperature profile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/22—Hardness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/006—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
-
- 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
Definitions
- the present invention relates to a cooling device with variable cooling rate in heavy plate rolling mills, hot strip mills or heat treatment lines for the treatment of metallic materials.
- the invention further relates to a cooling process with such a cooling device.
- the final quality of rolled sheets is largely determined by the first forming steps and corresponding cooling. Errors that have already occurred in the early stages of the production of the sheet, can be difficult or impossible to be fixed in the following lines and thus have a serious negative impact on the quality of the final product.
- the temperature-transformation path which the rolling stock passes undergoes a decisive influence on the mechanical properties of the rolling stock present at the end of the rolling process.
- the mechanical properties of the intermediate or end product depend on the temperatures at which the rolled stock was rolled at the respective rolling pass.
- thermomechanical rolling of rolling stock the rolling process takes place in such a way that the rolling stock is rolled only in certain permissible temperature windows. This means that rolling passes and targeted cooling phases have to alternate.
- Hardening and subsequent tempering of steel components in heat treatment lines is also common practice. This ensures that a desired Combination of strength and toughness of the material can be adjusted specifically.
- This technology is also used in principle in the production of higher-strength steel sheets in sheet metal systems, as disclosed, for example, in EP 1 764423 A1.
- the sheet is cooled at high speed, for example to room temperature, at high speed, ie the hardening process is completed.
- the annealing process ie the reheating of the tape to at 600 ° C, for example, followed by another cooling followed. In this way, sheets with different properties can be flexibly produced in small batches.
- cooling devices are known, for example, from EP 2 415 536, EP 2 047 921 or JP 5 123 737, in which high cooling rates with water-jet cooling and low cooling rates can be achieved by air-fan cooling (forced convection).
- the cooling device in order to achieve both a low and a very high cooling rate, taking into account a maximum uniformity of the cooling transversely to the sheet running direction, it is proposed that the cooling device consists of at least two cooling bars, each on the underside as well are arranged on the upper side transversely to the direction of sheet travel and centrally between two roller blocks and comprise spray nozzle cooling, each of which is associated with a plurality of full jet nozzles and a plurality of full cone nozzles, wherein the full jet nozzles are arranged symmetrically to the full cone nozzles.
- two cooling systems can be advantageously combined to form a structural unit in a cooling beam.
- the individual cooling beam can be made very compact and space-saving. Retrofitting of an already existing rolling mill with sheet metal cooling is readily feasible, since according to the invention the cooling can be installed between two roller conveyors without this necessitating substantial adjustment work on the roller shutters. Due to the symmetrical arrangement of the full jet nozzles and the full cone nozzles in the individual cooling bars, the application of the individual spray nozzles with a cooling medium can also take place symmetrically between two roller tables.
- the type of nozzle is not necessarily limited to full jet or full cone nozzles. Also conceivable are other types of injection nozzle or admission forms, such as, for example, hollow cone nozzles, flat jet nozzles, U-tubes, etc., which are also available in combinations in the cooling beams can be installed.
- the full jet nozzles can be acted upon with a cooling medium, so that thereby the sheet to be rolled with a high cooling rate of 5 to 150 K / s, preferably 50 K / s, can be cooled. Furthermore, it is provided that the full-cone nozzles can be acted upon by a cooling medium, so that in this way the sheet to be rolled can be cooled with a low cooling rate of below 1 K / s to 19 K / s.
- both the full cone nozzles and the full jet nozzles can be acted on and operated independently of one another at the same time or with a time delay and independently of one another.
- the cooling for the metal sheet to be rolled takes place by injection cooling with a coolant, the cooling rate and / or the respective required final temperature being determined by the liquid quantity and / or the number of full jet nozzles and cone nozzles (spray nozzles) ) is regulated.
- a cooling medium which is passed into two cooling bars, which are each arranged both on the underside and on the upper side of the sheet and transversely to the sheet metal direction and centrally between at least two roller tables cooled and the cooling medium is sprayed onto the sheet to be cooled via a multiplicity of full jet nozzles and full cone nozzles assigned to the cooling beam, wherein the full jet nozzles are arranged symmetrically to the full-cone nozzles in the cooling beams.
- a cooling bar it is intended to switch between a high cooling rate by means of a full jet nozzle and a low cooling rate by means of a full cone nozzle in a demand-oriented and stepless manner, in order to thereby set a complete overlapping of cooling rates.
- the quantity of coolant and the coolant pressure for each spray nozzle (full jet nozzle and full cone nozzle) in the chilled beam should also be controlled individually online.
- the control parameter may be the final temperature of the rolled sheet.
- Process sensors provide information about the sheet temperature and the actual flatness; these are collected in front of and behind the cooling device and the actual values compared with target values. From this value information, a model computer calculates online the cooling mode required for cooling,
- Cooling time and the required amount of coolant depending on the desired material quality of the strip are
- the determined control parameter (obtained / determined by the process sensors) can be further combined with information about the dimension and the material quality and / or with the desired properties such as hardness and strength of the sheet to be rolled.
- FIG. 1 is a side view of the cooling device according to the invention in a schematic sectional representation, wherein the
- Fig. 2 is a schematic side view of a
- FIG. 3 shows the graphical representation of a cooling device, which serves as the basis for
- the device 10 consists essentially of two opposing cooling bars 16, 16a and 17, 17a arranged between two roller table rollers 12, 13, 14.
- the cooling bars 16, 16a and 17, 17a are designed in a very compact design. In essence, two cooling systems 16 and 17 and 17a and 17a have been combined to form a cooling unit 18 and 18a.
- cooling units 18, 18a can be networked and synchronized with each other.
- the cooling bars 16, 16a are assigned to the upper side of the sheet metal and the cooling bars 17, 17a of the underside of the sheet metal.
- FIG. 2 shows an enlarged view of the lower cooling bar 17 according to FIG. 1, wherein the cooling bars 16, 16a and 17a are constructed in the same way.
- the compact design is based on the fact that at least two types of nozzles, in this case full-jet nozzles 19 and solid-state nozzles, are used.
- money jets 20 in a special manner in the chilled beam 16, 16 a and 17, 17 a are arranged and integrated. It is a nozzle cooling, preferably with full jet nozzles 19, 19a for a high cooling rate and a nozzle cooling preferably with full cone nozzles 20 for low cooling rates (gentle cooling) installed over which a cooling medium 29 can be selectively delivered to the sheet 22.
- the full-cone nozzles 20 are in the middle and the full-jet nozzles 19, 19a are spaced therefrom and arranged parallel next to the full-cone nozzles 20 in the cooling beam 16, 16a and 17, 17a.
- the nozzle cooling in the cooling beam 16, 16a and 17, 17a is preferably arranged transversely to the sheet running direction 20 and over the entire width of a sheet 22 to be rolled.
- FIG. 3 is a graphical representation for controlling a sheet metal cooling with the cooling system 16, 16a and 17, 17a according to FIG. 2 according to the invention.
- preliminary information such as primary sheet metal data 23, nominal sheet properties 24 and actual Sheet properties 25 a cooling model 26 are provided.
- This basic data serves to control the cooling device 28.
- the cooling model 26 is controlled by the values detected by sensors 27, 27a.
- the actual properties of the sheet 22 can be adjusted before cooling with the desired properties after the cooling of the sheet 22. If the desired properties are not reached, this information is transmitted to the cooling model and the cooling device readjusted accordingly, as shown in FIG.
- Flier ensures a safe and reliable process.
- the cooling device can be used with maximum flexibility. Manual intervention by operators is minimized by automatic control by the model computer.
- the cooling model 26 interacts permanently and virtually online with the cooling device 28.
- a cooling model is possible for each section of the machine. Volume flows and the actual data are permanently synchronized and readjusted if necessary. This makes it possible to produce maximum uniformity of cooling transversely and longitudinally to the strip running direction, whereby cooling rates of lowest to very high values can be realized.
- a plate mill, a hot strip mill or a heat treatment line can be operated with a maximum flexibility Flexi. This means that the desired cooling rate can be freely set at any time and over the entire length of the machine.
- the model computer (not shown) controlling the cooling model 26 autonomously decides which cooling application (cooling rate) is necessary and most economical for the material properties to be achieved.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (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)
- Metal Rolling (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020526559A JP6960056B2 (ja) | 2017-11-21 | 2018-10-31 | 鋼板用の冷却速度可変型の冷却バー及び冷却プロセス |
| CN201880075262.0A CN111386159A (zh) | 2017-11-21 | 2018-10-31 | 用于钢质板材的具有可变的降温速率的冷却梁和冷却工艺 |
| EP18796035.6A EP3713685B1 (de) | 2017-11-21 | 2018-10-31 | Kühlbalken und kühlprozess mit variabler abkühlrate für stahlbleche |
| US16/765,978 US11484926B2 (en) | 2017-11-21 | 2018-10-31 | Cooling bar and cooling process with variable cooling rate for steel sheets |
| RU2020115130A RU2744406C1 (ru) | 2017-11-21 | 2018-10-31 | Охлаждающая балка и процесс охлаждения с переменной скоростью охлаждения для стальных листов |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017127470.7A DE102017127470A1 (de) | 2017-11-21 | 2017-11-21 | Kühlbalken und Kühlprozess mit variabler Abkühlrate für Stahlbleche |
| DE102017127470.7 | 2017-11-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019101486A1 true WO2019101486A1 (de) | 2019-05-31 |
Family
ID=64051594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2018/079856 Ceased WO2019101486A1 (de) | 2017-11-21 | 2018-10-31 | Kühlbalken und kühlprozess mit variabler abkühlrate für stahlbleche |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US11484926B2 (de) |
| EP (1) | EP3713685B1 (de) |
| JP (1) | JP6960056B2 (de) |
| CN (1) | CN111386159A (de) |
| DE (1) | DE102017127470A1 (de) |
| RU (1) | RU2744406C1 (de) |
| WO (1) | WO2019101486A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024089104A1 (de) * | 2022-10-26 | 2024-05-02 | Sms Group Gmbh | Kühlmodul, kühlgruppe, kühlsystem, verfahren, warmgewalztes metallisches bandförmiges produkt und verwendung |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3808466A1 (de) * | 2019-10-16 | 2021-04-21 | Primetals Technologies Germany GmbH | Kühleinrichtung mit kühlmittelstrahlen mit hohlem querschnitt |
| CN116555555A (zh) * | 2022-01-28 | 2023-08-08 | 宝山钢铁股份有限公司 | 一种集约化热轧钢卷连续热处理的淬火冷却装置及淬火冷却控制方法 |
| DE102024113430A1 (de) * | 2024-05-14 | 2025-11-20 | Sms Group Gmbh | Steuergerät, Transferbarkühlung, Walzanlage, Verfahren zum Betreiben einer Walzanlage und Computerprogrammprodukt |
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| FR3060021B1 (fr) * | 2016-12-14 | 2018-11-16 | Fives Stein | Procede et section de refroidissement rapide d'une ligne continue de traitement de bandes metalliques |
-
2017
- 2017-11-21 DE DE102017127470.7A patent/DE102017127470A1/de not_active Withdrawn
-
2018
- 2018-10-31 EP EP18796035.6A patent/EP3713685B1/de active Active
- 2018-10-31 WO PCT/EP2018/079856 patent/WO2019101486A1/de not_active Ceased
- 2018-10-31 RU RU2020115130A patent/RU2744406C1/ru active
- 2018-10-31 CN CN201880075262.0A patent/CN111386159A/zh active Pending
- 2018-10-31 JP JP2020526559A patent/JP6960056B2/ja active Active
- 2018-10-31 US US16/765,978 patent/US11484926B2/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5123737B2 (de) | 1973-12-12 | 1976-07-19 | ||
| EP0864847A2 (de) * | 1997-03-11 | 1998-09-16 | BETRIEBSFORSCHUNGSINSTITUT VDEh, INSTITUT FÜR ANGEWANDTE FORSCHUNG GmbH | Planheits-Messsystem für Metallband |
| WO2001047648A2 (de) * | 1999-12-27 | 2001-07-05 | Siemens Aktiengesellschaft | Verfahren zur steuerung und/oder regelung der kühlstrecke einer warmbandstrasse zum walzen von metallband und zugehörige vorrichtung |
| EP1764423A1 (de) | 2004-07-07 | 2007-03-21 | JFE Steel Corporation | Verfahren zur herstellung von hochdehnbaren stahlblechen |
| EP2047921A1 (de) | 2007-07-30 | 2009-04-15 | Nippon Steel Corporation | Kühlvorrichtung für eine heisse stahlplatte, kühlverfahren für eine heisse stahlplatte und entsprechendes programm |
| EP2415536A1 (de) | 2009-03-30 | 2012-02-08 | JFE Steel Corporation | Kühlvorrichtung für heissgewalztes stahlblech |
| EP2361699A1 (de) * | 2010-02-26 | 2011-08-31 | Siemens Aktiengesellschaft | Verfahren zur Kühlung eines Blechs mittels einer Kühlstrecke, Kühlstrecke und Steuer- und/oder Regeleinrichtung für eine Kühlstrecke |
| WO2015113832A1 (de) * | 2014-01-31 | 2015-08-06 | Loi Thermprocess Gmbh | Einrichtung zum kühlen von platten- oder bahnförmigem blech aus metall und verfahren zur wärmebehandlung |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024089104A1 (de) * | 2022-10-26 | 2024-05-02 | Sms Group Gmbh | Kühlmodul, kühlgruppe, kühlsystem, verfahren, warmgewalztes metallisches bandförmiges produkt und verwendung |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111386159A (zh) | 2020-07-07 |
| JP2021502899A (ja) | 2021-02-04 |
| RU2744406C1 (ru) | 2021-03-09 |
| US11484926B2 (en) | 2022-11-01 |
| EP3713685B1 (de) | 2021-05-26 |
| EP3713685A1 (de) | 2020-09-30 |
| US20200360976A1 (en) | 2020-11-19 |
| DE102017127470A1 (de) | 2019-05-23 |
| JP6960056B2 (ja) | 2021-11-05 |
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