EP3491156A1 - Vorrichtung und verfahren zum ausbilden einer querwölbung an einem aus einem glühofen austretenden metallband - Google Patents
Vorrichtung und verfahren zum ausbilden einer querwölbung an einem aus einem glühofen austretenden metallbandInfo
- Publication number
- EP3491156A1 EP3491156A1 EP17748422.7A EP17748422A EP3491156A1 EP 3491156 A1 EP3491156 A1 EP 3491156A1 EP 17748422 A EP17748422 A EP 17748422A EP 3491156 A1 EP3491156 A1 EP 3491156A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal strip
- gas
- transverse curvature
- strip
- support nozzle
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 133
- 239000002184 metal Substances 0.000 title claims abstract description 133
- 238000000137 annealing Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims description 16
- 230000008093 supporting effect Effects 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 description 15
- 230000001105 regulatory effect Effects 0.000 description 9
- 230000001276 controlling effect Effects 0.000 description 6
- 238000007667 floating Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000011664 signaling Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- 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
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
- F27B9/2476—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by air cushion
Definitions
- the invention relates to a device for forming a transverse curvature on a metal strip emerging from an annealing furnace.
- the invention further relates to a method for forming a transverse curvature on a metal strip emerging from an annealing furnace.
- a metal strip is usually made using a continuous casting process.
- the metal strip can be heated to create a desired microstructure in an annealing furnace. Subsequently, the created microstructure can be "frozen” by rapid or gentle cooling (hard or soft quenching), also known as rough cooling, whereby the metal strip is first passed through the annealing furnace and then through a cooling line.
- the metal strip can be provided with a transverse arc, for example, circular arc-shaped.
- a transverse curvature with mechanical guide means, in particular rollers or shafts, on a flat metal strip.
- the mechanical guide means may be arranged in a heating area and in a cold area.
- mechanical guide means for forming the transverse curvature on the metal strip physical contact between the mechanical guide means and the metal strip may cause damage, in particular scratches and the like, on the surface of the metal strip.
- An object of the invention is to allow formation of a transverse curvature on a metal strip emerging from an annealing furnace without adversely affecting the surface finish of the metal strip.
- the transverse curvature is imposed contactlessly by means of the gas cushion on, for example, the metal strip, which is initially planar. There are no mechanical means used to form the transverse curvature of the metal strip, which are in physical contact with the metal strip.
- the non-contact embodiment of the transverse curvature on the metal strip according to the invention it is therefore not possible for any mechanical damage to the surface of the metal strip to occur.
- the formation of the transverse curvature on the exiting from the annealing metal strip is possible without affecting the surface finish of the metal strip.
- the device may also comprise two or more support jet arrangements arranged in the strip running direction offset from one another and below the strip run of the metal strip, each being adapted to produce a gas cushion supporting the metal strip from below between the metal strip and the support nozzle arrangement such that through the gas cushion on the metal strip the transverse curvature can be formed without contact.
- the mutually offset in the strip running direction gas cushion can be designed differently in order to force the transverse curvature step by step to the metal strip.
- the support nozzle assembly may be disposed outside of the annealing furnace or formed as an output side unit of the annealing furnace.
- the device may additionally comprise at least one nozzle arrangement arranged above the strip run of the metal strip, which is arranged to generate a gas cushion between the metal strip and the nozzle arrangement which acts on the metal strip from above such that the transverse curvature can be formed by the gas cushion on the metal strip.
- the nozzle assembly may be vertically disposed above a support nozzle assembly.
- the gas cushion may be, for example, an air cushion.
- the gas cushion may be formed by a gas having a composition other than air.
- a metal strip, in particular aluminum strip can first be subjected to solution annealing in a floating strip annealing furnace, wherein the metal strip in the floating strip annealing furnace is guided without contact by means of floating nozzles.
- the metal strip can be guided in the floating strip furnace with a characteristic of the strip guide in the SINUS. Subsequently, the metal strip, in particular at the exit from the Schwebiegeglühen and in the transition to a water cooler, with the Schwebiegeglühofen in
- the transverse curvature are imposed contactless.
- the metal strip can then be fed with the transverse curvature of a rough cooling and a downstream high-performance air cooling, whereby the transverse curvature of the metal strip is "frozen.”
- the metal strip is guided by means of floating nozzles also during the rough cooling and during the high-performance air cooling
- the metal strip can be guided completely contact-free, so that the surface quality of the metal strip is not impaired by physical contact with mechanical guiding means and a higher quality metal strip can be produced
- the transverse curvature of the metal strip is preferably given in the form of an upwardly curved, positive or concave transverse curvature s metal bands, which in particular allows a contactless guidance of the metal strip without mechanical guide means in a cooling area or a cooling line.
- the transverse curvature also has the advantage that a cooling water sprayed from above onto the metal strip flows off uniformly and under the action of gravity automatically over the strip edges from the surface of the metal strip
- the metal strip has a higher flatness and a lower internal mechanical stress in a downstream cooling region, so that a stretch-bending straightener must be used less intensively in the further production process in order to achieve a desired flatness To reach metal bands.
- the support nozzle arrangement comprises at least one gas nozzle extending essentially across the width of the metal strip, transversely to a strip running direction of the metal strip.
- the gas for forming the gas cushion emerges from the gas nozzle.
- the gas nozzle extends exactly over the width of the metal strip.
- the apparatus may include a blower or the like for generating a pressurized gas, with which the gas nozzle is supplied via at least one fluid line.
- the support nozzle arrangement may alternatively have at least two gas nozzles arranged offset to one another in the width direction of the metal strip or in the strip running direction.
- the gas nozzle comprises at least one outlet opening with a continuous or graduated transverse curvature corresponding to the transverse curvature to be formed on the metal strip.
- the outlet opening preferably extends substantially over the entire width of the metal strip.
- the transverse curvature of the outlet opening can be achieved in that the center of the gas nozzle is arranged higher than the sides of the gas nozzle.
- the gas cushion has by the transverse curvature of the outlet opening a corresponding transverse curvature, which serves to form the transverse curvature of the metal strip.
- the gas exits the length of the, for example, slot-shaped, outlet opening to produce a uniform air cushion.
- a width of the support nozzle arrangement which is transverse to the strip running direction of the metal strip can be varied.
- the width of the support nozzle arrangement or the gas nozzle can be varied to adapt to the respective width of the metal strip.
- the variation of the width of the support nozzle arrangement or the gas nozzle can be automated by means of a controllable actuator or manually.
- the device can be a signal with the actuator
- the support nozzle arrangement is arranged vertically adjustable.
- the positioning of the support nozzle arrangement or the gas nozzle can be adapted to the respective strip run of the metal strip.
- this can be adapted to the respective weight of the metal strip, the admission of the metal strip with the gas cushion or the supporting effect of the gas cushion.
- the support nozzle assembly or the gas nozzle in a lighter weight metal band deeper, ie at a greater distance to the metal strip, and higher weight metal band, that are arranged at a smaller distance to the metal strip.
- the height adjustment of the support nozzle arrangement or the gas nozzle can be automated by means of a controllable actuator or manually.
- the device may have a signaling technology connected to the actuator control and / or control electronics, the data supplied to the respective weight, the material thickness and / or width of the metal strip and with which these data are processed to generate actuating signals for the actuator ,
- a strength of a gas mass flow emerging from the support nozzle arrangement can be varied.
- the supporting effect of the gas cushion can be varied.
- the loading of the metal strip with the gas cushion or the supporting effect of the gas cushion can be adapted to the respective weight of the metal strip.
- the weight of the gas mass flow may be lower for a lighter weight metal band than for a heavier weight metal band.
- the variation of the strength of the gas mass flow can be automated or manual.
- the device may have a signaling and control electronics connected to a blower of the device,
- the data is supplied to the respective weight, the material thickness and / or width of the metal strip and with which these data are processed to generate control signals for the fan. It is furthermore advantageous if a temperature of the gas emerging from the support nozzle arrangement can be varied.
- the temperature of the gas can be selected, for example, such that the metal strip is kept warm or cooled via the gas cushion.
- the temperature of the gas can be selected, for example, as a function of a temperature of the metal strip emerging from the annealing furnace.
- the apparatus may include at least one heater for heating the gas prior to exiting the support nozzle assembly.
- the variation of the temperature of the gas can be automated or manual.
- the device may have a signaling and control electronics connected to a heater, the data supplied to the respective temperature of the metal strip and with which these data are processed to generate control signals for the heater.
- the transverse curvature is formed without contact on the metal strip.
- the advantages mentioned above with respect to the device are connected accordingly.
- the above apparatus can be used for carrying out the method.
- the transverse curvature can be formed on the metal strip without impairing the surface quality of the metal strip.
- a gas cushion supporting the metal band from below is produced in such a way that the transverse curvature is formed by the gas cushion on the metal band.
- Page 7 be used according to one of said embodiments or any combination of at least two of the embodiments. Consequently, with this embodiment, the advantages mentioned above with respect to the device are connected accordingly.
- a transverse to a strip running direction of the metal strip width of the gas cushion is varied.
- the advantages mentioned above with respect to the corresponding embodiment of the device are connected accordingly.
- the design variants mentioned for this embodiment of the device can be used to implement this embodiment of the method.
- the width of the support nozzle assembly or gas nozzle can be varied accordingly to vary the width of the gas cushion.
- a further advantageous embodiment provides that a thickness of a gas mass flow emerging from the support nozzle arrangement is varied.
- the advantages mentioned above with respect to the corresponding embodiment of the device are connected accordingly.
- the design variants mentioned for this embodiment of the device can be used to implement this embodiment of the method.
- Figure 1 a schematic representation of an embodiment of an inventive device
- Figure 2 is a schematic representation of a support nozzle assembly of another embodiment of an inventive device.
- Figure 1 shows a schematic representation of an embodiment of an inventive device 1 for forming a transverse curvature on a emerging from an annealing furnace 2, flat formed metal strip 3.
- a cooling line 5 In the tape running direction 4 is followed by the device 1, a cooling line 5 at. Both in the annealing furnace 2 and in the cooling line 5 (water cooler), the metal strip 3 is guided without contact by means of floating nozzles, not shown.
- the device 1 comprises a arranged below a strip of the metal strip 3 support nozzle assembly 6, which is adapted to produce a metal band 3 from below supporting gas cushion 7 between the metal strip 3 and the support nozzle assembly 6 such that through the gas cushion 7 on the metal strip 3 the Transverse curvature can be formed without contact.
- the nozzle assembly 6 comprises transversely to the strip running direction 4 of the metal strip 3 a substantially over the entire width of the metal strip 3 extending gas nozzle 8.
- the gas nozzle 8 comprises an outlet opening 9 with a continuously or stepped formed transverse curvature corresponding to the trachea to be formed on the metal strip 3 transverse curvature, as for example from FIG.
- Page 9 2 can be seen.
- a width of the support nozzle arrangement 6 or of the gas nozzle 8 given transversely to the strip running direction 4 of the metal strip 3 can be variable.
- the support nozzle arrangement 6 or the gas nozzle 8 can be arranged to be height-adjustable according to the double arrow 10.
- a thickness of a gas mass flow emerging from the support nozzle arrangement 6 or the gas nozzle 8 can be variable.
- the device 1, a fan 1 1 and a signal technically connected to the fan 1 1 control and / or control electronics 12 for controlling the blower 1 1 have.
- the control and / or regulating electronics 12 can be supplied with data which are processed by the control and / or regulating electronics 12 for controlling the blower 1 1 or the variation of the intensity of the gas mass flow.
- a temperature of the gas leaving the support nozzle arrangement 6 or the gas nozzle 8 can be variable.
- the device 1 may have a blower 1 1 connected downstream heater 13, which is technically connected to the control and / or control electronics 12 and controllable with this.
- the control and / or regulating electronics 12 can be supplied with data which are processed by the control and / or regulating electronics 12 for controlling the heating device 13 or the variation of the temperature of the gas.
- FIG. 2 shows a schematic representation of a support nozzle arrangement 6 of a further exemplary embodiment of a device 1 according to the invention for forming a transverse curvature on a planely formed metal strip 3 emerging from an annealing furnace, not shown.
- FIG. 2 shows the positive or concave transverse curvature of the metal strip 3.
- the support nozzle arrangement 6 is arranged below a strip run of the metal strip 3 and is set up, a gas cushion 7 supporting the metal strip 3 from below, between the metal strip 3 and the support nozzle arrangement 6
- the nozzle assembly 6 comprises transversely to a strip running direction 4 of the metal strip 3 a substantially over the entire width of the metal strip 3 extending gas nozzle 8.
- the gas nozzle 8 comprises an outlet opening 9 with a continuously formed transverse curvature corresponding to the trachea to be formed on the metal strip 3 transverse curvature.
- a width of the support nozzle arrangement 6 or of the gas nozzle 8 given transversely to the strip running direction 4 of the metal strip 3 can be variable.
- the support nozzle arrangement 6 or the gas nozzle 8 can be arranged to be height-adjustable according to the double arrow 10.
- a thickness of a gas mass flow emerging from the support nozzle arrangement 6 or the gas nozzle 8 can be variable.
- the device 1, a fan 1 1 and a signal technically connected to the fan 1 1 control and / or control electronics 12 for controlling the blower 1 1 have.
- the control and / or regulating electronics 12 can be supplied with data which are processed by the control and / or regulating electronics 12 for controlling the blower 1 1 or the variation of the intensity of the gas mass flow.
- a temperature of the gas leaving the support nozzle arrangement 6 or the gas nozzle 8 can be variable.
- the device 1 may have a blower 1 1 connected downstream heater 13, which is technically connected to the control and / or control electronics 12 and controllable with this.
- the control and / or regulating electronics 12 can be supplied with data which are processed by the control and / or regulating electronics 12 for controlling the heating device 13 or the variation of the temperature of the gas.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016214075.2A DE102016214075A1 (de) | 2016-07-29 | 2016-07-29 | Vorrichtung und Verfahren zum Ausbilden einer Querwölbung an einem aus einem Glühofen austretenden Metallband |
PCT/EP2017/068175 WO2018019670A1 (de) | 2016-07-29 | 2017-07-19 | Vorrichtung und verfahren zum ausbilden einer querwölbung an einem aus einem glühofen austretenden metallband |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3491156A1 true EP3491156A1 (de) | 2019-06-05 |
EP3491156B1 EP3491156B1 (de) | 2020-01-22 |
Family
ID=59520872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17748422.7A Active EP3491156B1 (de) | 2016-07-29 | 2017-07-19 | Verfahren zum ausbilden einer querwölbung an einem aus einem glühofen austretenden metallband und verwendung einer vorrichtung zum ausbilden einer querwölbung an einem aus einem glühofen austretenden metallband |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3491156B1 (de) |
CN (1) | CN109689902A (de) |
DE (1) | DE102016214075A1 (de) |
WO (1) | WO2018019670A1 (de) |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3281957A (en) * | 1963-04-22 | 1966-11-01 | Production Machinery Corp | Apparatus for processing strip material |
JPS583931A (ja) * | 1981-06-29 | 1983-01-10 | Chugai Ro Kogyo Kaisha Ltd | 帯状材料の浮揚装置および浮揚式熱処理炉 |
EP0181830B1 (de) * | 1984-11-08 | 1991-06-12 | Mitsubishi Jukogyo Kabushiki Kaisha | Verfahren und Vorrichtung zum Erwärmen eines Metallbandes in einem Durchlaufglühofen |
AT409301B (de) * | 2000-05-05 | 2002-07-25 | Ebner Peter Dipl Ing | Vorrichtung zum führen eines metallbandes auf einem gaskissen |
DE10046273C2 (de) | 2000-09-19 | 2003-01-30 | Carl Kramer | Verfahren und Vorrichtung zur Wärmebehandlung eines Metallbandes |
CN201065425Y (zh) * | 2007-07-19 | 2008-05-28 | 鞍钢股份有限公司 | 一种使连续退火炉中钢带悬浮的装置 |
CN201647712U (zh) * | 2010-03-12 | 2010-11-24 | 宝山钢铁股份有限公司 | 非接触式带钢传送装置 |
CN101993993A (zh) * | 2010-11-29 | 2011-03-30 | 苏州中门子科技有限公司 | 带材热处理设备上的气垫箱 |
CN102517436B (zh) * | 2011-12-16 | 2013-08-28 | 中冶南方(武汉)威仕工业炉有限公司 | 用于铝带加热与支撑的方法 |
CN203360520U (zh) * | 2013-06-26 | 2013-12-25 | 中冶南方(武汉)威仕工业炉有限公司 | 气垫式冷却喷嘴装置 |
CN203498431U (zh) * | 2013-08-23 | 2014-03-26 | 南京苏星冶金科技有限公司 | 气垫炉喷嘴 |
-
2016
- 2016-07-29 DE DE102016214075.2A patent/DE102016214075A1/de not_active Withdrawn
-
2017
- 2017-07-19 WO PCT/EP2017/068175 patent/WO2018019670A1/de unknown
- 2017-07-19 EP EP17748422.7A patent/EP3491156B1/de active Active
- 2017-07-19 CN CN201780046937.4A patent/CN109689902A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
CN109689902A (zh) | 2019-04-26 |
DE102016214075A1 (de) | 2018-02-01 |
WO2018019670A1 (de) | 2018-02-01 |
EP3491156B1 (de) | 2020-01-22 |
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