EP3350352A1 - Durchlaufkühlvorrichtung und verfahren zum abkühlen eines metallbandes - Google Patents
Durchlaufkühlvorrichtung und verfahren zum abkühlen eines metallbandesInfo
- Publication number
- EP3350352A1 EP3350352A1 EP17700322.5A EP17700322A EP3350352A1 EP 3350352 A1 EP3350352 A1 EP 3350352A1 EP 17700322 A EP17700322 A EP 17700322A EP 3350352 A1 EP3350352 A1 EP 3350352A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzles
- strip
- metal strip
- cooling
- belt
- 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
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/573—Continuous furnaces for strip or wire with cooling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- 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
- C21D9/63—Continuous furnaces for strip or wire the strip being supported by a cushion of gas
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/035—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material to several spraying apparatus
Definitions
- the invention relates to a continuous cooling device for cooling a metal strip, in particular a metal strip of light metal, for.
- a continuous cooling device for cooling a metal strip, in particular a metal strip of light metal, for.
- B. an aluminum strip with at least one (first) belt float having a plurality along the strip running direction distributed upper (air) nozzles and a plurality of along the tape running direction distributed lower (air) nozzles, the metal belt floating (and thus non-contact) between the Both upper and lower side of the belt can be acted upon with cooling air, and with a plurality of water cooling units, with which the metal strip can be acted upon with cooling water.
- the strip running direction corresponds to the furnace longitudinal direction. It is (essentially) horizontally oriented.
- Metal strip in the context of the invention preferably means a metal strip made of a light metal or a light metal alloy, particularly preferably made of aluminum or an aluminum alloy.
- the metal strip is usually subjected during the production of a heat treatment for metallurgical purposes. So it is z.
- a metal strip made of an aluminum alloy after the cold rolling to a heat treatment in order to optimize the strip properties or material properties, in particular strength and deformability / plasticity. So it is with aluminum alloys z.
- B. usual to achieve increases in strength by precipitation hardening by solution annealing.
- the metal strip passes through an oven, for. B. a band float oven.
- the temperatures in the course of solution annealing of aluminum alloys are usually in a temperature range between 400 ° C and 600 ° C, depending on the type of alloy.
- the alloying elements are uniformly dissolved in the aluminum matrix, resulting in a homogeneous mixed crystal.
- the invention therefore relates
- the Schroff cooling the band are forced out with a circular arc-like cross-sectional shape.
- a device for cooling a metal band which has a slanted inclined to the surface slot nozzle, which directs a beam of a gas / liquid mixture to the surface.
- EP 0 343 103 B1 likewise describes a method for cooling metal strips by spraying a gas / liquid mixture in the form of a mist onto the surface of the strip.
- EP 0 695 590 B1 describes a method for cooling hot-rolled plates or also strips of aluminum or aluminum alloys, wherein air nozzles are to be provided in addition to water nozzles, which impose a periodic wiping movement on the water jets.
- EP 1 485 509 discloses a method for the rapid cooling of strips or plates made of metal, in which predominantly the lower surface of the strips or plates is acted upon by water jets.
- the invention is based on the technical problem of providing a continuous cooling device with which, with a simple construction, metal strips, in particular aluminum alloy strips, can be cooled in an optimum manner and thus achieve outstanding strip properties.
- the invention teaches in a generic flow cooling device of the type described above, that the water cooling units are integrated into the belt float.
- the invention is based on the recognition that, although it is basically expedient, the metal strip, z.
- the metal strip for example, to cool aluminum as quickly as possible in order to optimally "freeze" the properties achieved by the heat treatment, but at the same time avoid overly rapid cooling in order to reduce contraction by contraction of the strip, even if such distortions generally occur in a subsequent straightening process
- the invention has nevertheless found that, in order to achieve optimum strip properties, warping must be kept as low as possible in order to minimize as far as possible the influence of the strip in the course of the downstream straightening process. not as quickly as possible, but only as quickly as necessary and at the same time as slowly as possible, in order to
- a frequently observed in practice degressive cooling curve (in the time-temperature diagram) is avoided and realized either a progressive or a linear cooling curve.
- this is achieved in that a combined water-air cooling is realized in such a way that water cooling units are integrated into a belt-shaft cooler.
- Such a device can be implemented quite simply in terms of device technology, since it is initially possible to make use of the fundamental structure of a belt-type bucket.
- the water cooling units which can also be very simple, integrated.
- a "soft quench" is realized, in addition, a very good adjustability and thus good customization options to the respective process and in particular to the treatment of different bands are possible.
- a band-float furnace or cooler of known design. Such has a plurality of upper nozzles, which are arranged along the strip running direction at a distance, so that between the upper nozzle each intermediate areas are formed.
- a plurality of lower nozzles are provided, which are arranged in the strip running direction at a distance from each other, so that a plurality of intermediate regions are formed between the lower nozzle.
- a multiplicity of water cooling units can now be integrated into the strip-shaft cooler by arranging the water-cooling units in the lower intermediate regions and / or the upper intermediate regions. There are therefore a plurality of water cooling units integrated in the belt float, wherein in several intermediate areas between each in the strip running direction immediately behind one another and thus adjacent
- each at least one water cooling unit is arranged.
- the water cooling units can be integrated into the belt-shaft cooler in such a way that the already existing intermediate regions between the nozzles are optimally utilized. Furthermore, a too rapid cooling of the metal strip can be avoided in this way, since the cooling with the aid of cooling water as it is stepwise and is superimposed in each case with a cooling on the cooling air. There are optimal settings.
- the admission of air in principle takes place both from above and from below, as is generally the case in strip-type vibrators or strip-float furnaces.
- the water cooling is carried out only “from below", that is to say the water cooling units are arranged to act on the strip underside only in the area of the lower nozzles and consequently in the lower intermediate areas below the strip.
- it is alternatively also within the scope of the invention alternatively or additionally to apply water to the upper side, so that, alternatively or additionally, water cooling units are also used in the upper intermediate regions can be provided.
- the upper nozzles in a side view are arranged in pairs one above the other in alignment, so that the tape is not floated sinusoidal.
- the water cooling units themselves can be constructed and set up in basically known manner. They may each have one or more in the strip running direction arranged one behind the other and extending transversely to the strip running direction along the bandwidth water nozzles or rows of water nozzles.
- the belt float cooler vorzuordnen at least one water cooling device.
- the metal strip after which it has been subjected to a heat treatment and z. B. emerges from a ribbon float oven, first passes through a conventional water cooling unit and thus a conventional water quench and only then enters into the strip vibrating cooler according to the invention with integrated water cooling units. In this way, the system can be operated very variable overall.
- the optionally provided water cooling can also be switched off, so that then the "soft quench" according to the invention with combined water-air cooling is used.
- the invention also relates to a method for cooling a metal strip, in particular an aluminum strip, in a continuous cooling device of the type described.
- the metal strip passes through the strip float under tensile stress along a (substantially horizontal) strip running direction, which corresponds to the furnace longitudinal direction. This ensures a continuous treatment in the course of a continuous run.
- the metal band becomes floating and thus contactless between the upper ones
- Transported nozzles and the lower nozzles and thereby both the upper side of the tape and the lower side of the belt are subjected to cooling air.
- the metal strip is acted upon with cooling water.
- the metal strip within the strip-vibrating cooler is acted upon with cooling water by a plurality of water cooling units integrated in the strip-shaft cooler.
- the metal strip is subjected to water cooling units within the belt-shaft cooler, which are arranged in several intermediate regions between two each in the strip running direction immediately behind one another (and consequently adjacent) arranged upper nozzles or lower nozzles.
- the invention proposes that the metal strip between two adjacent lower nozzles or upper nozzles with the water cooling unit arranged in the respective intermediate region by a temperature difference of at most 100 K, for example at most 75 K, preferably maximum 50 K is cooled.
- the invention also provides a system for heat treatment of a metal strip, in particular an aluminum strip, with at least one treatment device, for.
- a treatment furnace in particular ribbon float furnace and with at least one flow cooling device of the type described.
- the flow cooling device according to the invention is z. B. the treatment furnace intended for heat treatment in the working direction and consequently downstream of the tape running direction.
- the described flow cooling device which operates on the one hand with air cooling and on the other hand with water cooling, a further strip float is arranged downstream, but preferably without water cooling and therefore formed in a conventional manner.
- the treatment device which is followed by the flow cooling device, it may - as described - act as a treatment oven for heating the band.
- the invention also includes the combination of the continuous cooling device with other treatment devices.
- the flow cooling device according to the invention z. B. also a (hot) rolling mill or a (hot) rolling mill or other treatment station are arranged downstream, through which the metal strip runs in a heated state or in which the metal strip is heated.
- the invention also relates to a method for heat treatment of a metal strip in a plant of the type described.
- This method is characterized in that the metal strip is first heated in the treatment furnace and then cooled in the flow cooling device and, if appropriate, another strip-float cooler.
- the metal strip not a treatment furnace, but another treatment device, for. As a rolling mill / mill or the like, passes through.
- FIG. 1 shows a plant according to the invention for the heat treatment of an aluminum strip with a continuous cooling device according to the invention
- FIG. 2 shows a section from FIG. 1 in the region of the throughflow cooling device
- Fig. 3 shows a modified embodiment of the invention
- Fig. 4 shows a modified embodiment of the article according to
- a plant for the heat treatment of a metal band 1 is shown, which is preferably formed as an aluminum strip.
- the plant has a treatment furnace 2, which is designed as a ribbon float furnace and in which the metal strip is subjected to a heat treatment. It may be z. B. act a solution annealing or the like.
- the system has a continuous flow cooling device 3, which is arranged downstream of the ribbon float furnace 2 in the strip running direction B.
- the continuous flow cooling device 3 has a belt float cooler 4 which has a plurality of upper nozzles 5 distributed along the belt running direction and a plurality of lower nozzles 6 distributed along the belt running direction, the metal belt 1 being suspended and thus transported without contact between the upper nozzles 5 and the lower nozzles 6 , In this case, both the upper side of the tape and the lower side of the belt are subjected to cooling air.
- the flow cooling device 3, a plurality of water cooling units 7, with which the metal strip 1 is acted upon with cooling water.
- these water cooling units 7 are integrated in the belt-shaft cooler 4.
- upper intermediate regions 5a and lower intermediate regions 6a are formed within the belt-shaft cooler 4, wherein it can be seen that these intermediate regions 5a, 6a are arranged directly one behind the other and consequently adjacent to each other in the direction of belt travel B.
- arranged upper or lower nozzles 5 and 6 are provided.
- a water cooling unit 7 is now arranged in each case in a plurality of lower intermediate regions 6a and preferably in all intermediate regions 6a which are formed within the ribbon levitation cooler 4.
- These water cooling units 7 each have one or more water nozzles or rows of water nozzles 8 arranged one behind the other in the direction of belt travel B and extending transversely to the direction of belt travel B along the belt width.
- the strip float cooler has a plurality of upper nozzle boxes 9 each having a plurality of integrated upper nozzles 5 and a plurality of lower nozzle boxes 10 each having a plurality of integrated lower nozzles 6.
- the water cooling units provided according to the invention are consequently arranged in the region of the lower nozzle boxes 10, specifically between the individual lower nozzles of each nozzle box and also between the two lower nozzle boxes 10 arranged one behind the other.
- the upper nozzle boxes 9 and / or the lower nozzle boxes 10 are suspended vertically adjustable, so that the height adjustment of one or both nozzle boxes, the distance between the upper nozzle 5 and lower nozzle 6 and consequently the vertical distance is adjustable.
- actuators or the like may be provided.
- FIGS. 1 and 2 show the throughflow cooling device 3 according to the invention in a first embodiment, in which the upper nozzles 5 are arranged along the strip running direction B offset from the lower nozzles 6, so that the metal strip 1 is floated in a sinusoidal or wavy manner.
- the water cooling units 7 are thus arranged in a side view in alignment under the opposite upper nozzles 5.
- Fig. 3 shows a modified embodiment of a continuous flow cooling device according to the invention, in which the upper nozzles 5 on the one hand and the lower nozzles 6 on the other hand in a side view are arranged in pairs one above the other, so that the band is not floated sinusoidal or wavy.
- the water cooling units 7 essential to the invention are provided in the intermediate areas, which are consequently likewise integrated into the belt-shaft cooler 4.
- FIG. 4 shows an alternative embodiment of a throughflow cooling device according to the invention.
- additional upper nozzles 5 ' are additionally arranged between the upper nozzles 5.
- the embodiment of FIG. 4 is a combination of the embodiments according to Figures 2 and 3.
- the additional (upper) nozzles 5 ' may be connected to the corresponding (upper) nozzle box 9 or also integrated in this. Alternatively, however, separately formed additional nozzles 5 'can be provided.
- the metal strip 1, which was previously subjected to a heat treatment in the strip float furnace 2 can be cooled in an optimum manner.
- the cooling rates can be set sufficiently fast by combined air and water cooling to freeze the metallurgical properties achieved during the heat treatment. In this case, however, too fast cooling rates can be avoided, so that distortions in the course of cooling the tape are kept within acceptable limits.
- Particularly advantageous is the fact that optimal variable adjustment options exist, so that the cooling process can be optimally adjusted to the particular desired circumstances.
- the system for heat treatment of the aluminum strip additionally comprises a further belt float cooler 1 1, which operates in a conventional manner without water cooling and which is arranged downstream of the belt float cooler 3 in the belt running direction B.
- the throughflow cooling device arranged downstream of the furnace 2 can also have an additional water cooling device 12, which is arranged upstream of the belt-floating radiator 2 on the inlet side.
- an additional water cooling device 12 which is arranged upstream of the belt-floating radiator 2 on the inlet side.
- a so-called “hard quench” is provided at the inlet, so that it is optionally possible to work with conventional, very fast water cooling if required.
- This system is characterized by high flexibility and variability.
- the invention also encompasses embodiments in which the flow cooling device 3 is arranged downstream of another type of treatment device, through which the strip is in a heated state runs or in which the band is heated. In any case, the belt exits the belt treatment device in a heated state and enters the throughflow cooling device 3.
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- 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)
- General Engineering & Computer Science (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016102093.1A DE102016102093B3 (de) | 2016-02-05 | 2016-02-05 | Durchlaufkühlvorrichtung und Verfahren zum Abkühlen eines Metallbandes |
| PCT/EP2017/050401 WO2017133867A1 (de) | 2016-02-05 | 2017-01-10 | Durchlaufkühlvorrichtung und verfahren zum abkühlen eines metallbandes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3350352A1 true EP3350352A1 (de) | 2018-07-25 |
| EP3350352B1 EP3350352B1 (de) | 2021-11-24 |
Family
ID=57796344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17700322.5A Revoked EP3350352B1 (de) | 2016-02-05 | 2017-01-10 | Durchlaufkühlvorrichtung und verfahren zum abkühlen eines metallbandes |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US11072834B2 (de) |
| EP (1) | EP3350352B1 (de) |
| KR (1) | KR20180109864A (de) |
| CN (1) | CN108431250A (de) |
| CA (1) | CA3004532A1 (de) |
| DE (1) | DE102016102093B3 (de) |
| RU (1) | RU2744007C2 (de) |
| WO (1) | WO2017133867A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10900098B2 (en) * | 2017-07-04 | 2021-01-26 | Daido Steel Co., Ltd. | Thermal treatment furnace |
| DE102019102595A1 (de) * | 2019-02-01 | 2020-08-06 | Otto Junker Gmbh | Verfahren zum Abkühlen von bewegtem metallischen Material sowie Vorrichtung zur Durchführung eines solchen Verfahrens |
| DE102019105167B3 (de) * | 2019-02-28 | 2020-08-13 | Ebner Industrieofenbau Gmbh | Schwebebandofen |
| CN111826504A (zh) * | 2020-06-05 | 2020-10-27 | 中航工程集成设备有限公司 | 一种气垫炉气液淬火喷嘴结构及气液协同淬火系统 |
| CN111876559A (zh) * | 2020-08-17 | 2020-11-03 | 苏州大图热控科技有限公司 | 一种铝合金瞬时液相扩散焊接后的自动化固溶装置及方法 |
| CN112795771A (zh) * | 2020-12-30 | 2021-05-14 | 阳江宏旺实业有限公司 | 雾冷器、不锈钢连续退火冷却系统及其冷却方法 |
| CN114769565B (zh) * | 2022-03-22 | 2023-03-24 | 吴江市亨达机械配件有限责任公司 | 全自动机器人配件压铸设备用冷却装置 |
| CN115637315B (zh) * | 2022-11-17 | 2025-03-28 | 中铝瑞闽股份有限公司 | 一种用于提高带材淬火性能的装置及方法 |
| AT526905B1 (de) | 2023-01-16 | 2024-12-15 | Ebner Ind Ofenbau | Durchlaufkühlvorrichtung |
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| FR2940979B1 (fr) * | 2009-01-09 | 2011-02-11 | Fives Stein | Procede de refroidissement d'une bande metallique en defilement |
| JP6024219B2 (ja) | 2012-06-05 | 2016-11-09 | 株式会社豊田自動織機 | 織機の駆動装置 |
| DE102012110010B4 (de) | 2012-10-19 | 2016-09-01 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Vorrichtung und Verfahren zur kontinuierlichen Behandlung eines Metallbandes |
| CN102953021B (zh) * | 2012-10-29 | 2015-08-05 | 苏州新长光热能科技有限公司 | 铝合金中厚板固溶处理用快速冷却装置 |
| DE102014118946B4 (de) | 2014-12-18 | 2018-12-20 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Vorrichtung und Verfahren zur kontinuierlichen Behandlung eines Metallbandes |
| DE102016101160B4 (de) | 2016-01-22 | 2017-09-28 | Otto Junker Gmbh | Vorrichtung zum schwebenden Führen und gleichzeitigem Abkühlen von bahnförmigem Material und Verfahren zum Betreiben einer solchen Vorrichtung |
-
2016
- 2016-02-05 DE DE102016102093.1A patent/DE102016102093B3/de not_active Revoked
-
2017
- 2017-01-10 RU RU2018122483A patent/RU2744007C2/ru active
- 2017-01-10 EP EP17700322.5A patent/EP3350352B1/de not_active Revoked
- 2017-01-10 CA CA3004532A patent/CA3004532A1/en not_active Abandoned
- 2017-01-10 WO PCT/EP2017/050401 patent/WO2017133867A1/de not_active Ceased
- 2017-01-10 CN CN201780005207.XA patent/CN108431250A/zh active Pending
- 2017-01-10 US US15/769,540 patent/US11072834B2/en active Active
- 2017-01-10 KR KR1020187018659A patent/KR20180109864A/ko not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| US20180327876A1 (en) | 2018-11-15 |
| DE102016102093B3 (de) | 2017-06-14 |
| CA3004532A1 (en) | 2017-08-10 |
| KR20180109864A (ko) | 2018-10-08 |
| RU2018122483A3 (de) | 2020-05-12 |
| RU2744007C2 (ru) | 2021-03-01 |
| WO2017133867A1 (de) | 2017-08-10 |
| EP3350352B1 (de) | 2021-11-24 |
| US11072834B2 (en) | 2021-07-27 |
| RU2018122483A (ru) | 2019-12-20 |
| CN108431250A (zh) | 2018-08-21 |
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