EP3234204A1 - Dispositif et procédé de traitement en continu d'une bande métallique - Google Patents

Dispositif et procédé de traitement en continu d'une bande métallique

Info

Publication number
EP3234204A1
EP3234204A1 EP15762579.9A EP15762579A EP3234204A1 EP 3234204 A1 EP3234204 A1 EP 3234204A1 EP 15762579 A EP15762579 A EP 15762579A EP 3234204 A1 EP3234204 A1 EP 3234204A1
Authority
EP
European Patent Office
Prior art keywords
strip
band
linear motors
metal strip
heating
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
Application number
EP15762579.9A
Other languages
German (de)
English (en)
Other versions
EP3234204B1 (fr
Inventor
Andreas Noé
Dieter Baukloh
Dirk Schäfer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BWG Bergwerk und Walzwerk Maschinenbau GmbH
Original Assignee
BWG Bergwerk und Walzwerk Maschinenbau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BWG Bergwerk und Walzwerk Maschinenbau GmbH filed Critical BWG Bergwerk und Walzwerk Maschinenbau GmbH
Priority to PL15762579T priority Critical patent/PL3234204T3/pl
Publication of EP3234204A1 publication Critical patent/EP3234204A1/fr
Application granted granted Critical
Publication of EP3234204B1 publication Critical patent/EP3234204B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • C21D11/00—Process control or regulation for heat treatments
    • 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
    • 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
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/40—Arrangements of controlling or monitoring devices

Definitions

  • the invention relates to a device for the continuous treatment of a metal strip, in particular a metal strip made of aluminum or an aluminum alloy or of non-ferrous metal (eg copper) or a non-ferrous metal alloy, with at least one tempering device through which the metal strip is passed floating and with a Bandlageregel worn with which the position of the metal strip in the strip running plane and transverse to the strip running direction is controlled or regulated, wherein the tempering device has at least one inlet-side heating section and a downstream cooling section.
  • the tempering device is preferably a strip float furnace having a heating section and a cooling section.
  • the heating section usually consists of several heating zones (heating or holding zones) and the cooling section usually consists of several cooling zones.
  • the metal strip is heated in such a tempering to a certain (set) temperature, optionally held for a certain time at this temperature and then cooled again.
  • the passage through the furnace is non-contact by the tape between nozzles, z. B. air nozzles, which are acted upon by appropriate air pressure, is floated.
  • the cooling in the cooling zones can be done by air, water or a combination of air and water.
  • Such strip-type furnaces with heating section on the one hand and cooling section on the other hand are known (cf., for example, DE 198 04 184 A1).
  • a device of the type described above for continuous borrowing treatment of a metal strip with a tempering device or a ribbon float oven it may be, for. B. to a annealing line or continuous annealing line act, in which the metal strip from a heat treatment
  • the device may also be a strip coating line or a strip coating line in which the heat treatment of the metal strip does not take place in the sense of annealing, but for drying a coating of a strip, so that the oven is then designed as a continuous dryer ,
  • the metal strip is preferably aluminum or non-ferrous metal strip (or corresponding alloys) in a thickness range of 0.1 mm to 6 mm.
  • the metal strip z. B. Since the metal strip z. B. is heated in annealing lines to temperatures near the melting point, it is usually necessary to adjust within the tempering a relatively low band tension to avoid a band break. For this purpose, the strip tension z. B. degraded on the inlet side in a clamping roller set and the outlet side after cooling again built in a further set of clamping rollers. In the tempering device (eg in the ribbon float furnace), the specific strip tension is z. B. 0.5 to 1 MPa.
  • the band can "run" in the furnace, in particular with a small strip tension, for example because of a possible band saw blade, it is necessary to position the band in a suitable manner by means of a band position control device, preferably to bring it to the center of the band
  • a band position control device preferably to bring it to the center of the band
  • the belt passes through the belt treatment section at a higher speed however, only a limited amount of heat input into the belt per oven zone
  • the temperature control device would have to be designed longer for a higher production capacity. Since the tape runs easier because of the low strip tension in the furnace section, there is the risk with large furnace lengths that the known belt position control devices are no longer sufficient to keep the strip running in the furnace stable, so that there is a risk of the belt running laterally or starts at the furnace construction. This can lead to unwanted tape damage or a tape break, so that plants with increased production capacity can not be realized in this way easily.
  • the band position control device is no longer arranged on the output side behind the tempering and therefore no longer after the last cooling zone, but it is as it were integrated into the cooling section by these is preferably divided into two cooling sections.
  • a first section the belt is cooled down so far that it can easily pass the belt control device.
  • the band position control device is located. Subsequently, the belt passes through the second cooling section and consequently the second part of the cooling zones, so that the belt is then cooled down to the desired final temperature.
  • the Bandlageregelein- direction is in the known system z. B. formed as a conventional three-roller control device, which can be easily integrated in the cooling section at correspondingly low temperatures.
  • the belt position control device it has also been proposed in DE 10 2012 1 10 010 A1 that the belt position control device,
  • the z. B. works with linear motors.
  • the invention has for its object to provide a device for the continuous treatment of a metal strip of the type described above, in which even in very long kiln lines a perfect tape is guaranteed.
  • the invention teaches in a generic device for continuous treatment of a metal strip that the non-contact band position control device has at least one non-contact tape position sensing element and at least one linear motor and is located within the heating path or between the heating section and the cooling section.
  • the invention is based on the recognition that it is not necessary to arrange the band position control device in the cooling section, but that when using a non-contact band position control device based on linear motors there is the possibility of this before the cooling section and consequently within the heating section or between To arrange heating section and cooling section.
  • linear motors are used in the band position control device, the z. B. in DE 197 19 994 A1 and also already mentioned in DE 10 2012 1 10 010 A1. They are integrated according to the invention in the hot area.
  • Los working band position control device within the heating section or between the heating section and the cooling section means that at least the linear motor and possibly also the non-contact band position detection element of the band position control device within the Schuumble or between the heating section and the cooling section is / are arranged.
  • the linear motors are arranged so that they act transversely to the direction of tape travel, so that the tape run can be corrected transversely to the tape running direction (in the tape running plane). In contrast to the procedure described in DE 197 19 994 A1, therefore, all linear motors operate in the same (transverse) direction, so that no transverse voltages are built up in the band.
  • the linear motors do not serve to generate belt tensions, but exclusively to correct the belt travel, that is to say the positioning of the belt transversely to the belt running direction (in the belt plane).
  • the length of the heating section was limited, since a band position control device was provided only after or within the cooling section, it is now possible according to the invention to lengthen the heating section "as desired.” If it is assumed, for example, that due to the band profile the free length, that is the length between a roll and the downstream band position control device or the length between two successively arranged band position control devices, depending on the strip quality may not exceed 100 m to 130 m and the band position control device was located behind the cooling section in the prior art or If necessary, the lengths of the heating sections were limited to lengths well below 100 m. According to the invention, the restriction no longer exists, because the heater can be adjusted by one or more band-edge regulating devices within the heating section Extend distance easily to lengths over 100 m, because the tape can according to the invention with the help of linear motors
  • the invention proposes that the (free) distance between two (directly) successively arranged band-stop control devices along the working direction (eg between the linear motors), less than 100 m, preferably less than 80 m, z. B. less than 60 m, and more preferably less than 40 m. Consequently, it is possible to arrange band-stop control devices at specific intervals within the heating section (and also, if appropriate, also within the cooling section) so that there are no longer any length limitations of the heating section with regard to a strip course.
  • the band position control device consists of at least one linear motor and at least one band position detection element (eg a sensor), these components being connected to suitable control electronics.
  • a linear motor basically consists of a stator or an inductor and an armature, the special feature in the context of the invention being that the armature is formed by the metal strip itself.
  • the stator or the inductor consists of coils which generate an electromagnetic alternating field.
  • the corresponding correction movement that acts on the anchor is based on a continuous repulsion between the stator field and the anchor field.
  • Non-ferromagnetic metal strips are particularly preferably used within the scope of the invention.
  • linear motors or their stators are arranged both above the band and below the band, wherein the metal band is passed through the gap between the stators with an adjustable distance (see DE 197 19 994 B4).
  • the linear motors are designed and arranged so that they act transversely to the direction of tape travel. The fact that all the linear motors counteract the direction of the band course (that is, the running of the band), the band profile is corrected. More preferably, the force of the linear motors is applied to the band in proportion to the measured band
  • the tempering device preferably consists basically of a plurality of tempering zones or furnace zones.
  • the heating section can have a plurality of heating zones
  • the cooling section can have a plurality of cooling zones.
  • Such zones can z. B. be characterized in that they are independent of each other temperature.
  • the non-contact band position control device that is to say the linear motor and / or the band position detection element, is arranged between two heating zones (arranged directly behind one another). It is therefore not necessary to integrate the band position control device in the heating zones in which the nozzles are arranged, but it can be provided between two heating zones sufficient space to arrange there the linear motor or linear motors and possibly also the tape position sensing element. So there is z. B. the ability to combine several heating zones in groups and provide a band position control device between two groups.
  • the linear motors operate in a direction transverse to the strip running direction and in the strip plane or parallel to the strip plane, the linear motors or their stators being arranged above and / or below the strip. It is advantageous if the linear motors are arranged in width regions which cover at least the width range of the band (with maximum bandwidth).
  • the linear motors or their stators are arranged in width regions which cover at least the width range of the band (with maximum bandwidth).
  • the vertical free distance between the above and below the belt arranged linear motors (or their stators) is preferably at least 80 mm, more preferably at least 100 mm.
  • the linear motors are located within the heating zone and consequently in the hot zone of the furnace. These are preferably areas of the furnace in which the temperature of the metal bound it more than 300 ° C, z. B. is more than 400 ° C. Are z. B. treated aluminum strips in an annealing furnace, the temperature of the aluminum strip is more than 500 ° C. Nevertheless, according to the invention can be operated without contact with linear motors. It is expedient to cool the linear motors or their stators, preferably with a water cooling.
  • the tape position that is, the tape run is detected without contact, with non-contact tape position sensing elements.
  • It may be z. B. to inductive sensors, capacitive sensors or optical sensors.
  • radar sensors come into question. Such sensors may be located within the furnace, and thus in close proximity to the belt, with sufficient temperature resistance.
  • z. B. in radar sensors to provide them at a significant distance from the band.
  • sensors and / or linear motors or their stators can not only be cooled but also encapsulated in a suitable manner in order to limit the thermal loads.
  • the belt control devices according to the invention are
  • one or more band position control devices can be arranged particularly advantageously within the heating section, so that the distance between two such band position control devices can be relatively small.
  • the first band position control device for. B. whose linear motor is arranged in the heating section at a distance behind the last arranged before the heating roller or Bandumlenkrolle which is at least ten times, preferably at least twenty times the (maximum) bandwidth.
  • the invention also provides a process for the continuous treatment of a metal strip with a device of the type described, wherein the metal strip for thermal treatment is floatingly guided through the heating section and the cooling section.
  • This method is characterized in that the position of the metal strip (in the strip running plane or parallel to the strip running plane and transverse to the strip running direction) is controlled or regulated with at least one non-contact band position regulating device arranged within the heating section or between the heating section and the cooling section. It is provided that the deviation of the actual position (eg actual central axis) of the belt from the desired position (eg desired center axis) of the belt, eg. B.
  • the linear motors or the horizontal force component essentially act perpendicular to the strip running direction (parallel to the strip running plane) and counter to the strip deflection or the course of the strip.
  • the band position control device for.
  • the linear motor and / or band position sensing element arranged in a region of the heating section, in which the temperature of the metal band it more than 300 ° C, z. B. more than 400 ° C, is.
  • the band position control consequently does not take place within the cooling section, but in the hot region.
  • the measurement of the actual position takes place before the linear motors and / or after the linear motors and / or at the position of the linear motors.
  • the measurement can consequently be arranged in the strip running direction in front of the linear motors.
  • the measurement can also be arranged behind the linear motors and there is also the possibility that prior to the measurement and after the measurement linear motors are arranged, so that linear motors z. B. are arranged between two measuring points.
  • the force exerted on the belt with the linear motors can be controlled transversely to the direction of tape travel in proportion to the measured belt run. Incidentally, it is within the scope of the invention to dispense with a correction with the linear motors in a deviation of the actual position of the target position within a tolerance range.
  • FIG. 2 shows an enlarged detail of the article of FIG. 1 and
  • Fig. 3 is a plan view of a metal strip within the device according to
  • a strip processing apparatus for continuously treating a metal band 1, namely a thermal treatment is shown in simplified form.
  • This device has a tempering 2, which is designed as a ribbon float furnace.
  • the metal strip passes through this ribbon float furnace 2 without contact by the strip between two upper nozzles 8 and lower nozzles 9 is floated contactless, the nozzles 8, 9 with a corresponding pressure, for. B. air pressure can be applied.
  • the strip float furnace 2 has a heating section 3 on the inlet side and a cooling section 4 on the outlet side.
  • the heating section is composed of a plurality of heating zones 3 ', while the cooling section is composed of a plurality of cooling zones 4', the individual zones 3, 4 being individually controllable or separately controllable.
  • the heating of the metal strip 1 is generally carried out with the aid of the air, so that the nozzles 8, 9 can take over the temperature control in addition to the support function.
  • the cooling zones 4 ' the cooling is usually also carried out by air or a combination of air and water.
  • the target temperature (of the metal strips) in the heating zone e.g. B. about 550 ° C to 570 ° C.
  • the heating zones 3 ' consequently form heating and holding zones.
  • Fig. 2 it is indicated that the upper nozzles 8 and the lower nozzles 9 are arranged transversely to the strip running plane E with a (vertical) nozzle spacing.
  • strip direction B in a row are a variety of furnace zones, z. B. heating zones 3 'and cooling zones 4' are arranged, these zones 3 'and 4' are each independently temperature-controlled.
  • Furnace zone 3 ', 4', the upper nozzles 8 are connected to an upper nozzle box 10 and the lower nozzles 9 to a lower nozzle box 1 first
  • Each of these nozzle boxes 10, 1 1 is usually associated with its own Ventiltor, wherein the fans via distribution channels in the nozzles 8, 9 open. Details are known in principle.
  • Fig. 1 it can be seen, moreover, that the system inlet side has a clamping roller 5, with which the strip tension is reduced, for. B. to a specific strip tension of 0.5 to 1 MPa.
  • the device according to the invention has one or more belt position control devices 7 with which the position of the metal belt 1 in the belt running plane E and transversely to the belt running direction B can be controlled or regulated.
  • at least one belt position control device 7 is arranged within the heating section 3. This is shown in FIG.
  • the band position control device 7 operates without contact. It has at least one contactless tape position detection element 12 and at least one linear motor 13, wherein in the exemplary embodiment both the tape position detection element 12 and the linear motor 13 are arranged within the heating section 3. It is indicated in the figures that the band position control device 7 is arranged between two directly successively arranged heating zones 3 '. The two heating zones 3 'are thus arranged spaced from each other in the strip running direction and in this area the band adjustment device 7 is attached.
  • a linear motor 13 are arranged above the belt and below the belt in each case.
  • the stator 13 'of the linear motor 13 is meant, because the armature of the linear motor 13 is formed by the metal strip itself.
  • FIG. 3 It can be seen in FIG. 3 that with the aid of the linear motor 13, a force is generated parallel to the strip running plane E and transversely or perpendicular to the strip running direction B.
  • the desired central axis 14 of the belt 1 is shown, which z. B. corresponds to the center axis of the strip processing machine.
  • the actual central axis 15 is indicated by way of example in FIG. 3, specifically for the case in which the actual central axis 15 deviates from the desired central axis 14 by the band path V.
  • the tape position detection element 12 With the help of the tape position detection element 12, the position of the actual central axis 15 is measured relative to the desired central axis 14 and from the deviation correction signals are generated.
  • the illustrated measuring device 12 is designed as a non-contact sensor or operates with non-contact sensors, eg. As inductive sensors, capacitive sensors, optical sensors or with a radar measurement.
  • band position control device 7 is shown in the figures. Particularly preferred are not only in the heating section 3, but also in the cooling section 4 and between heating section 3 and cooling section 4 band
  • Position control devices 7 arranged. With an appropriate length of the heating zone a plurality of belt position control devices 7 can be integrated into the heating section 3, so that z. B. in the heating section 3 at least every 50 m, preferably at least every 30 m, a band position control device 7 is provided. In this way, it is possible to work with furnaces of almost any length, so that the capacity of the system is increased.
  • the integrated in the furnace band position control device (that is, linear motor and tape position sensing element) is connected to a suitable control electronics or control electronics, which of course does not have to be arranged within the furnace and according to the invention is not necessarily subject to the band position control device.

Abstract

L'invention concerne un dispositif de traitement en continu d'une bande métallique (1), en particulier d'une bande métallique en aluminium ou en alliage d'aluminium ou en métal non ferreux ou en alliage de métal non ferreux, qui comprend au moins un dispositif de régulation de température (2) qui est traversé de façon flottante par la bande métallique (1) et au moins un dispositif de réglage de position de la bande (7) qui permet de régler ou de commander la position de la bande métallique (1) dans le plan de défilement de bande (E) et transversalement à la direction de défilement de bande (B). Le dispositif de régulation de température (2) comporte au moins une section de chauffage côté entrée (3) et une section de refroidissement côté sortie (4). Le dispositif est caractérisé en ce que le dispositif de commande de position de bande (7), fonctionnant sans contact, comprend au moins un élément de détection de position de bande (12) sans contact et au moins un moteur linéaire (13) et est disposé à l'intérieur de la section de chauffage (3) ou entre la section de chauffage (3) et la section de refroidissement (4).
EP15762579.9A 2014-12-18 2015-09-09 Dispositif et procédé de traitement en continu d'une bande métallique Active EP3234204B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15762579T PL3234204T3 (pl) 2014-12-18 2015-09-09 Urządzenie i sposób ciągłej obróbki taśmy metalowej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014118946.9A DE102014118946B4 (de) 2014-12-18 2014-12-18 Vorrichtung und Verfahren zur kontinuierlichen Behandlung eines Metallbandes
PCT/EP2015/070615 WO2016096173A1 (fr) 2014-12-18 2015-09-09 Dispositif et procédé de traitement en continu d'une bande métallique

Publications (2)

Publication Number Publication Date
EP3234204A1 true EP3234204A1 (fr) 2017-10-25
EP3234204B1 EP3234204B1 (fr) 2018-11-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP15762579.9A Active EP3234204B1 (fr) 2014-12-18 2015-09-09 Dispositif et procédé de traitement en continu d'une bande métallique

Country Status (10)

Country Link
US (1) US10472699B2 (fr)
EP (1) EP3234204B1 (fr)
CN (1) CN107075605B (fr)
CA (1) CA2967082C (fr)
DE (1) DE102014118946B4 (fr)
ES (1) ES2705274T3 (fr)
HU (1) HUE042584T2 (fr)
PL (1) PL3234204T3 (fr)
TR (1) TR201819360T4 (fr)
WO (1) WO2016096173A1 (fr)

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Also Published As

Publication number Publication date
HUE042584T2 (hu) 2019-07-29
TR201819360T4 (tr) 2019-01-21
PL3234204T3 (pl) 2019-06-28
EP3234204B1 (fr) 2018-11-07
CN107075605B (zh) 2019-03-08
ES2705274T3 (es) 2019-03-22
US20170321298A1 (en) 2017-11-09
DE102014118946A1 (de) 2016-06-23
DE102014118946B4 (de) 2018-12-20
CA2967082C (fr) 2019-10-01
US10472699B2 (en) 2019-11-12
CA2967082A1 (fr) 2016-06-23
CN107075605A (zh) 2017-08-18
WO2016096173A1 (fr) 2016-06-23

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