EP3774101A1 - Kühleinrichtung und verfahren zu deren betrieb - Google Patents
Kühleinrichtung und verfahren zu deren betriebInfo
- Publication number
- EP3774101A1 EP3774101A1 EP19716140.9A EP19716140A EP3774101A1 EP 3774101 A1 EP3774101 A1 EP 3774101A1 EP 19716140 A EP19716140 A EP 19716140A EP 3774101 A1 EP3774101 A1 EP 3774101A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling
- group
- cooling device
- metallic material
- iii
- 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
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
- B21B45/0218—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
- 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
-
- 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
-
- 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
-
- 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
-
- 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
- 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
-
- 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
- C21D2221/00—Treating localised areas of an article
Definitions
- Cooling device and method for its operation
- the invention relates to a cooling device for cooling a metallic material, in particular a metal strip and a method for its operation.
- Such cooling devices with a plurality of parallel cooling bars for applying a coolant to a metallic material are well known in the art, such.
- the said European patent discloses a cooling device with a plurality of cooling bars, which extend in the transport direction or longitudinal direction of the metallic material to be cooled. At the same time, however, a plurality of these cooling bars are arranged in the width direction of the metallic material. Each cooling bar can be acted upon individually with a volume flow of a coolant. In this way, different distributions of the volume flow of coolant over the width of the metallic material to be cooled can be realized.
- the published patent application DE 198 54 675 A1 discloses a cooling device with a plurality of cooling bars, which each extend transversely to the longitudinal direction of the metallic material to be cooled and are arranged in parallel. Each chilled beam carries distributed over its length, ie distributed over the width of the metallic material, a plurality of admission tubes or nozzles, which in turn can be individually controlled with respect to the applied coolant volume flow. In this way, a very individual distribution of the coolant volume flow over the metallic material to be cooled can likewise be realized.
- European patent EP 2 986 400 B1 discloses a cooling device with all the features of the preamble of claim 1.
- the cooling device disclosed therein comprises at least one cooling beam for applying a coolant to a metallic material, each cooling beam having at least one left, a middle and a right loading area aut Vietnamese.
- the loading regions are adjacent in pairs in the longitudinal direction of the cooling beam and formed differently in their surface and / or contour. Specifically, in the patent all three areas are triangular shaped.
- Each Beaufschlagungs Scheme own pumps and valves are assigned to control or adjusting the coolant flow rate in the individual Beauftschungs Symposiumen.
- the known cooling devices allow a limited adjustment of the distribution of the coolant volume flow over the width of the rolling stock; however, the setting options for the distributions are limited. Thus, with these limited adjustment options, it is not always possible to adequately respond to strips or sheets with different widths and to apply a specific coolant quantity distribution over the bandwidth in accordance with the bandwidth.
- With the same amount of coolant distribution in the chilled beams within a group of chilled beams very narrow metallic goods are hardly masked, while the masking of wide metallic goods is far too deep.
- a similarity of loading areas in the cooling bars of a group in combination with a row-shaped arrangement of outlet openings for the coolant in the cooling beam inevitably leads to a step-shaped coolant loading over the width of the rolling stock. As a result, there is a risk of strip-like cooling of the metallic material.
- the invention has the object of developing a known cooling device, a known method for their operation and a known rolling arrangement with such a cooling device to the effect that the Options for adjusting certain distributions of the coolant over the width of the metallic material can be improved.
- the cooling device is characterized in that the first loading area of the first cooling bar is formed differently in its contour and / or area than the first loading area of the adjacent second cooling bar in the same group.
- area means area
- group in the present description means a plurality of cooling bars arranged in parallel, the number of cooling bars per group being determined by the ultimately desired or predetermined distribution of the coolant over the rolling stock. The more members or chilled beams one Assigned group, the finer or more precise can be realized a desired coolant distribution.
- adjacent pairs means that of the at least three provided admission areas per cooling beam, not all three admission areas are adjacent to one another at the same time.
- the loading regions are typically arranged one behind the other in the longitudinal direction of each of the cooling bars, so that typically only two, that is to say a pair of loading areas, are always adjacent
- left, center and right refer to the representation of the loading areas in the figures. In a real arbitrary arrangement of the chilled beams in the room, these terms are suitable to change.
- first and second chilled bars are merely for physical distinction of the chilled beams; they do not denote the order or ranking of the chilled beams within the group.
- the second cooling bar are arranged and designed so that they both spray despite their diversity substantially a same or common first width portion of the goods with coolant.
- the first loading area of the first cooling bar and the first loading area of the second cooling bar are the same or similar in the sense of the present description.
- boundary between two adjacent application areas of a cooling bar is marked in each case by a borderline.
- the boundary line must by no means run straight, but can also be curved or stepped between individual admission tubes or nozzles of the respective
- Cooling device the different configuration between the same Beauftschungs Schemee at two adjacent chilled beam of the same group can be achieved in that the boundary line in the two to be compared cooling bars either at different angles a relative to the longitudinal axis of the respective chilled beam inclined and / or that the boundary lines along the longitudinal axis the cooling bars are positioned differently in the x-direction, ie are shifted in the x-direction relative to each other. Both alternatives actually increase the possibility of setting a desired distribution of the coolant over the width of the metallic material.
- the above object of the invention is further achieved by a rolling mill with at least one roll stand for rolling the metallic material and with a roll stand typically downstream cooling device according to the present invention.
- a first group of cooling bars according to the invention may be arranged for applying the coolant to the upper side of the metallic material and at least one second group of cooling bars may be provided for applying the coolant to the underside of the metallic material.
- the above-mentioned object of the invention is also achieved by a method for operating the cooling device according to the invention.
- the pressure or the volume flow of the coolant in the individual areas of action of at least one cooling bar within the group is respectively set as a function of at least one of the following parameters of the rolling stock: width of the metallic material, temperature distribution of the rolling stock to be cooled over its width and / or its chemical composition. Said parameters can be measured or calculated at the input or output of the cooling device, whichever is called a pilot control or a control.
- FIG. 1 shows a cooling device according to the invention with a group of example five cooling beams, wherein the loading areas of the
- Cooling bar are formed in the form of a first pattern or a first embodiment
- Figure 2 shows a second pattern or embodiment of the arrangement of
- Figure 3 shows a third pattern or embodiment of the arrangement of
- Figure 4 shows an example of the distribution of the volume flow of the coolant over the width of the metallic material according to the present invention.
- FIG. 5 variants of the distribution according to FIG. 4 by variation of the
- FIG. 1 shows a cooling device 100 for cooling a metallic material 200, in particular a metal strip.
- the coolant is pumped by means of pumps 160 and valves 130 from a tank into the cooling bars 110.
- Each chilled beam 110-n is divided in its longitudinal direction into at least a left, a middle and a right loading area I, II, III with respective loading tubes or nozzles 150.
- Each admission area I, II, III of a cooling bar is assigned its own valve 130, so that the individual areas can be acted upon individually with a pressure or volume flow of the coolant.
- all left admission areas I are connected by way of example to the same valve 130-1 and are connected in parallel.
- all right-hand application areas III are connected to a third valve 130-111.
- each valve area can also be assigned to each admission area of each cooling bar.
- each valve area can also be assigned to each admission area of each cooling bar.
- all sub cases are conceivable, in which case the individual identical admission areas are only partially connected in parallel.
- the loading regions I, II, III of the cooling bars 110-1... -5 each differ in the size of their surface, that is to say with respect to their surface area.
- the area of the trapezoidal middle loading area II from the chilled beam 110-1 to the chilled beam 110-5 becomes larger and larger, while at the same time the areas of the left and right loading areas I, III are successively smaller and smaller. This is due to the fact that the entire spray area of each individual cooling bar always remains the same even when the boundary lines 140 are displaced. Furthermore, it can be seen that in the case of the cooling bars 110-1..., All loading areas are always trapezoidal, while in the fifth cooling bars 110-5, the two outer loading areas I and III are each triangular in shape and only the central cooling area II is trapezoidal is trained.
- Each of the chilled beams has at least one, but typically a plurality of admission tubes or nozzles 150 in each admission area, and these admission tubes or nozzles can also be formed only in the form of simple openings in the chilled beam.
- the cooling bars 110-n extend with their longitudinal axis transversely to the transport direction T of
- the individual cooling bars 110 of a group G may, in principle, at least partially also have a different number of loading areas.
- a group G of cooling bars 110-n is defined by a desired distribution of the coolant 300 over the width of the metallic material 200.
- the desired distribution function results from superimposing the individual distribution functions of the individual cooling bars within the group G.
- the more cooling bars with differently formed application areas I, II, III are combined in a group the more accurately a desired overall distribution function for the coolant can be realized.
- a technically preferred fine parabolic loading of the metallic material 200 with coolant 300 can then be realized.
- Figure 2 shows a second embodiment of the design of the Beauftschungs Schemee, which differ in each case in their surface area and in its contour of the cooling beam to the cooling beam.
- the two outer, ie the left and the right loading area I, III are each triangular in shape and the central area each formed trapezoidal.
- the different design in area and contour is realized in the second embodiment, characterized in that the boundary lines 140 are inclined from chilled beam to chilled beam respectively different from the longitudinal direction of the chilled beam.
- the inclination angles a1... A5 become larger and larger from the first cooling beam 110-1 to the last cooling beam 110-5 of the group G.
- the trapezoidal middle loading areas are always increased, while the respective outer loading areas I and III are proportionally reduced.
- FIG. 3 shows a third exemplary embodiment of the configuration of the admission areas I, II and III in the case of a group G of five cooling bars. In the third example, the diversity of the individual
- FIG. 4 shows, by way of example, a distribution function of the average volume flow of the coolant 300 over the width of the metallic material 200.
- the distribution function shown is an example of this, as with the combination of a plurality of cooling bars 110-1
- FIG. 5 initially shows the same distribution function as in FIG. 4, see FIG. 5 the mean function. Furthermore, FIG. 5 shows a function which is more curved or weakened in comparison to the mean function in the edge regions; This is achieved by reducing the amount of water in the peripheral zones. Finally, a differently modified distribution function can be recognized above the function of FIG. 4; This is realized by a corresponding increase in the amount of water in the peripheral zones. It is particularly advantageous if not all identical edge zones within a group are connected in parallel with regard to the coolant admission, ie are acted upon with the same volume flow or the same pressure for the coolant, but if these adjustment parameters by individually provided for the individual Beaufschlagungs Symposium Editions, etc.
- Figure 5 shows the possibilities of using different Beauftschungs Schemee in the chilled beam of a group with simultaneous variation of the amounts of coolant or the pressure of the coolant in the individual Beauftschungs Schemeen a group.
- the cooling device 100 is typically connected downstream of the last stand of a rolling mill. At least one first group G of cooling bars 110 is arranged in the cooling device for applying the coolant to the upper side of the metallic material and / or at least one second group is arranged for applying the coolant to the underside of the metallic material.
- the pressure or the volume flow of the coolant 300 in the individual admission areas I, II and III of at least one cooling bar 110 within the group G can each be set as a function of at least one of the following parameters: the width of the metallic material, the temperature distribution of the metal to be cooled Good about its width or depending on the chemical composition or the material or the material properties of the metallic material. These mentioned parameters can be measured and / or calculated either at the input and / or at the output of the cooling device. If it is detected at the entrance of the cooling device, it is called a feedforward control; if the detection of the parameters takes place at the outlet of the cooling device, then it may be a regulation.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018205685.4A DE102018205685A1 (de) | 2018-04-13 | 2018-04-13 | Kühleinrichtung und Verfahren zu deren Betrieb |
| PCT/EP2019/058452 WO2019197255A1 (de) | 2018-04-13 | 2019-04-04 | Kühleinrichtung und verfahren zu deren betrieb |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3774101A1 true EP3774101A1 (de) | 2021-02-17 |
| EP3774101B1 EP3774101B1 (de) | 2021-11-24 |
Family
ID=66092342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19716140.9A Active EP3774101B1 (de) | 2018-04-13 | 2019-04-04 | Kühleinrichtung und verfahren zu deren betrieb |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US11612922B2 (de) |
| EP (1) | EP3774101B1 (de) |
| JP (1) | JP7024116B2 (de) |
| CN (1) | CN111971131B (de) |
| DE (1) | DE102018205685A1 (de) |
| WO (1) | WO2019197255A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018205684A1 (de) * | 2018-04-13 | 2019-10-17 | Sms Group Gmbh | Kühleinrichtung und Verfahren zu deren Betrieb |
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| JP6052204B2 (ja) | 2014-02-28 | 2016-12-27 | Jfeスチール株式会社 | 鋼板の冷却装置 |
| JP6495069B2 (ja) * | 2015-03-30 | 2019-04-03 | 株式会社神戸製鋼所 | 厚鋼板冷却方法及び厚鋼板冷却装置 |
| JP6367756B2 (ja) | 2015-05-26 | 2018-08-01 | 株式会社神戸製鋼所 | 厚鋼板冷却方法及び厚鋼板冷却装置 |
| CN107309280B (zh) | 2015-07-20 | 2019-01-25 | 东北大学 | 多腔体流量可控喷淋集管 |
| CN206652848U (zh) * | 2017-01-22 | 2017-11-21 | 中国重型机械研究院股份公司 | 一种分区同步喷射的喷射梁 |
| CN207043020U (zh) * | 2017-06-12 | 2018-02-27 | 鞍钢股份有限公司 | 一种热轧板带轧辊分段冷却装置 |
-
2018
- 2018-04-13 DE DE102018205685.4A patent/DE102018205685A1/de not_active Withdrawn
-
2019
- 2019-04-04 JP JP2020554491A patent/JP7024116B2/ja active Active
- 2019-04-04 CN CN201980025437.1A patent/CN111971131B/zh active Active
- 2019-04-04 US US17/047,192 patent/US11612922B2/en active Active
- 2019-04-04 EP EP19716140.9A patent/EP3774101B1/de active Active
- 2019-04-04 WO PCT/EP2019/058452 patent/WO2019197255A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021517865A (ja) | 2021-07-29 |
| EP3774101B1 (de) | 2021-11-24 |
| US11612922B2 (en) | 2023-03-28 |
| CN111971131B (zh) | 2022-10-28 |
| JP7024116B2 (ja) | 2022-02-22 |
| CN111971131A (zh) | 2020-11-20 |
| DE102018205685A1 (de) | 2019-10-17 |
| WO2019197255A1 (de) | 2019-10-17 |
| US20210162478A1 (en) | 2021-06-03 |
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