EP2173918B1 - Ausrüstung zur beschichtung eines blechstreifens - Google Patents

Ausrüstung zur beschichtung eines blechstreifens Download PDF

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Publication number
EP2173918B1
EP2173918B1 EP08830457A EP08830457A EP2173918B1 EP 2173918 B1 EP2173918 B1 EP 2173918B1 EP 08830457 A EP08830457 A EP 08830457A EP 08830457 A EP08830457 A EP 08830457A EP 2173918 B1 EP2173918 B1 EP 2173918B1
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EP
European Patent Office
Prior art keywords
bath
strip
roll
quenching
coating
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.)
Not-in-force
Application number
EP08830457A
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English (en)
French (fr)
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EP2173918A1 (de
Inventor
Pierre-Jerome Borrel
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.)
Clecim SAS
Original Assignee
Siemens VAI Metals Technologies SAS
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Publication of EP2173918A1 publication Critical patent/EP2173918A1/de
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Publication of EP2173918B1 publication Critical patent/EP2173918B1/de
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0034—Details related to elements immersed in bath
    • C23C2/00342—Moving elements, e.g. pumps or mixers
    • C23C2/00344—Means for moving substrates, e.g. immersed rollers or immersed bearings
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0035—Means for continuously moving substrate through, into or out of the bath
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process
    • C23C2/004—Snouts
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/26—After-treatment
    • C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/26—After-treatment
    • C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
    • C23C2/29—Cooling or quenching
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/40—Plates; Strips

Definitions

  • the invention relates to an installation for coating a strip product, in particular, a metal strip, by galvanizing.
  • the corrosion resistance of the metal sheets used in particular, in certain applications such as the building, automobile or household appliances, it is common to deposit on the surface of these sheets, a layer of zinc coating or a zinc-based alloy.
  • the sheet being made, normally, by rolling a metal strip, it can be subjected to a galvanizing treatment performed during the running of the strip in a continuous galvanizing line.
  • the figure 2 shows schematically, on a larger scale, the constitution of such a galvanizing section comprising means for controlling the continuous movement of the band M between a liquid zinc bath 31 and a final cooling bath or "tank of quenching "along a path defined by a plurality of baffle rollers and having, generally speaking, a first inlet portion T1 of the web M in the metal bath 31, in a downward direction, to a first roll deflector 41 immersed in the bath 31, a second portion T2 of the bath outlet 31, in an upward direction, to a pair of deflector rollers 42, 42 'placed at a higher level above the bath 31 and at least one third part T3 extending between an upper baffle roll 42 'and a lower baffle roll 43 immersed in the final cooling bath 35 and along which are placed cooling means by blowing a gaseous fluid, the band M then being evacuated, passing on a deflector roll 44, towards the rest of the installation, for example a skin-pass rolling mill.
  • the strip is covered on both sides with a zinc layer driven upwardly with the strip.
  • the covered strip then passes into a wiper device 32 of known type which makes it possible to control the thicknesses of these two coating layers.
  • French Patent No. 2,726,288 from the same company describes such an air knife dewatering device.
  • the installation may comprise, on the upstream part T2 of the path of the strip, at the outlet of the metal bath 31, a heating furnace 33 making it possible to perform a so-called alloy heat treatment which ensures the diffusion of iron from the band, to the zinc coating, to create a real iron / zinc alloy.
  • a heating furnace 33 making it possible to perform a so-called alloy heat treatment which ensures the diffusion of iron from the band, to the zinc coating, to create a real iron / zinc alloy.
  • the strip must, however, be cooled before being immersed in the quenching tank 35.
  • the installation therefore comprises, above the alloying oven 33 and / or on the downward path T3 of the strip, a cooling device 34 comprising for example, variable speed motor-blowers blowing air on the belt and whose flow rate can be regulated by measuring the temperature.
  • means 34 'of cooling by air blowing can also be placed on the upward path T2 above the alloying furnace 33. This blowing cooling must, itself, be carried out carefully so as to not to degrade the quality of the zinc deposit.
  • the metal strips themselves have a large enough width, for example up to two meters and the control of their scrolling at high speed requires the use of complex and bulky equipment.
  • the building in which is placed such a galvanizing plant thus has a significant footprint.
  • the galvanizing plant is only part of the production line, which usually includes other sections which are also very cumbersome, in particular the upstream and downstream accumulators 13, the annealing furnace 2 which comprises several sections on the one hand, to anneal and on the other hand to bring the strip to the desired temperature for galvanizing, the skin-pass 15, the degreasing section 14 and the section of passivation 16, as well as unwinding 10 and winding devices 19.
  • the annealing furnace 2 which comprises several sections on the one hand, to anneal and on the other hand to bring the strip to the desired temperature for galvanizing, the skin-pass 15, the degreasing section 14 and the section of passivation 16, as well as unwinding 10 and winding devices 19.
  • the object of the invention is to solve such problems thanks to a new arrangement of the installation making it possible to reduce its footprint.
  • the invention also makes it possible to delay the moment when one of the so-called "exposed face of the strip” comes into contact with a deflector roll, in order to ensure excellent quality of the coating on this exposed face. .
  • the invention therefore applies, in a general manner, to a coating installation of a strip product by passing it into a bath of liquid metal, comprising at least three parts, respectively a first part of entering the metal bath, passing on a first baffle roll placed at a lower level, a second brewing portion of the bath in an upward direction, between said first lower roll and a second baffle roll placed at a higher level, above metal bath, at least a third cooling portion extending between said second upper roll and a final coolant bath, and a fourth output portion of said cooling bath.
  • the final cooling liquid bath is placed at a level higher than that of the metal bath and is shifted with respect thereto towards the inlet side, so that the fourth bath outlet portion cooling passes over the metal bath, and that the footprint of the entire coating installation does not significantly exceed that of the metal bath.
  • the strip is supported, by a first face, on the first baffle roll, coming from a first inlet side in the metal bath and is supported by the same first face on the second baffle roll placed at higher level, so that the third cooling part is placed towards the same first side of the metal bath with respect to the second outlet portion of the bath.
  • the installation comprises a quality control station of the coating, placed on the second side of the metal bath, opposite to the first input side of the strip and in front of which passes, in the first ascending portion of the metal bath outlet, the second face of the strip opposite the first bearing face on the first and second deflection rolls, and the band passes over a baffle roll immersed in the final cooling bath taking resting on said roll immersed by its second face, then passes over the whole of the installation, in the fourth part of the outlet of the cooling bath, taking support by the same second face on two upper rollers spread apart and back down by a last descending part of output of the installation by passing in front of the station of verification the same second face of the band, so that the state of the coating on this second face can be verified, firstly at the outlet of the metal bath and, secondly, at the outlet of the installation, after final cooling.
  • the installation comprises at least one cooling means, by gas blowing, on both sides of the strip, arranged along the path thereof, or upstream of the second baffle roll in the second outlet portion of the metal bath, or downstream of said second deflector roll, at the beginning of the third cooling part.
  • the invention also makes it possible to place a means for heating the strip in the second outlet portion of the metal bath, immediately above it, in order to perform an alloying treatment.
  • the third cooling portion of the strip comprises a single strand descending from the second baffle roll to the coolant bath placed above the metal bath.
  • the third cooling portion comprises, from the second baffle roll placed at a higher level, a first descending strand to a third baffle roll placed below the second roll and above the bath metallic, a second ascending strand between said third roll and a fourth baffle roll placed substantially at the second roll, and a third descending strand between said fourth roll and the coolant bath, cooling means being placed at least on the one of the two ascending and descending strands, upstream of the third deflector roll so as to allow a support of the band on said third deflector roll, by its second face opposite to the first bearing face on the first and the second deflection roll, without deterioration of the coating deposited on this second face.
  • cooling means are arranged, respectively, on the upward path between the first and second baffle rolls and on the descending path between the second upper roll and the third lower roll, said cooling means being offset in height and arranged in a staggered arrangement.
  • the invention is particularly applicable to a coating installation arranged downstream, in the direction of travel, of an annealing line placed inside a closed enclosure for maintaining a non-oxidizing atmosphere, with scrolling the strip between two sets of deflector rollers spaced apart in height, said enclosure being closed at an outlet end by a vertical wall having a height corresponding to the spacing between the deflection rollers and provided at its lower part with a closed chute outlet strip to the metal bath gulvanization.
  • the entire coating installation can be arranged in a constricted space extending vertically along the vertical closing wall of the enclosure and horizontally over a distance corresponding to the footprint of the bath metal with the exit chute of the band.
  • the invention can also be applied, advantageously, to a coating installation disposed downstream from an annealing line placed inside a closed enclosure extending horizontally between an inlet end and an end of outlet equipped with a connecting chute opening into the galvanizing metal bath.
  • the final cooling bath can be placed above the annealing enclosure, some distance upstream of the outlet end, and the third part of the path of the strip, along which cooling means are placed horizontally above the annealing chamber and returning upstream to the final cooling bath from which the fourth bath outlet portion extends horizontally downstream. passing over said cooling means.
  • the figure 3 shows schematically a preferred embodiment of a galvanizing plant according to the invention as indicated above, the strip M to be treated was first brought to a temperature desirable for galvanizing, preferably in an annealing furnace terminating in a temperature-controlled holding section 24 and having, at its outlet, a baffle roll 40 which directs the strip to the galvanizing metal bath 31 formed in a tank 30 and into which is immersed a first baffle roll 41.
  • the band M therefore follows a downward path T1 between the output roll 40 and the submerged roll 41 on which it bears by its upper face A.
  • the strip M then comes out of the bath 31 along an upward vertical path T2 to an upper roll 42 past a wiper device 32 for controlling the thickness of the coating.
  • the band M is supported on the upper roll 42 by the same side A passing on the immersed roll 41.
  • the band M returns to the side by which it had entered the tray, that is to say the left side on the figure 3 .
  • an oven 33 is placed above the dewatering device 32 and is followed by cooling cells 6 which can be placed, not only on the upward path T2, upstream of the upper roll 42, but also on the downward path T3, above the lower roll 43. It is thus possible to achieve sufficient cooling of the band before the contact of its side A 'with the lower roll 43.
  • the tank 5 containing the quenching bath 35 in which the final cooling of the band M is achieved, is placed above the tank 30 containing the galvanizing bath. 31 and offset from it, to the inlet side of the galvanizing plant whose footprint is thus reduced compared to the conventional layout of the figure 2 .
  • the galvanizing plant 3 is preceded, usually, by an annealing line 2 terminating in a section 24 in which the strip is brought to the desired temperature for galvanizing.
  • the assembly is placed under a protective atmosphere in a closed enclosure 8 extended at its outlet end of the band M, by a chute 81 immersed in the metal bath 31 to maintain the seal.
  • the band passes on two series of deflector rollers spaced in height and the enclosure 8 is therefore closed, at its outlet end, by a vertical wall 80 of corresponding height.
  • the quench tank 35 is placed above the metal bath 31 and the outlet trough 81 and the assembly of the coating installation can therefore be arranged in a constricted space extending vertically in height, along the closing wall 80 of the annealing enclosure 8 and horizontally over a distance not exceeding the footprint of the metal bath 31 with the connecting trough 81.
  • the overall size, in length, of the treatment line can be decreased compared to the conventional arrangement of Figures 1 and 2 .
  • the upper roller 42 may be placed at a height sufficient to have the cooling means 6 extending over the length necessary to obtain sufficient cooling of the strip before the contact of its side A 'with the lower roller 43.
  • this roll 43 can be immersed in the quench bath 35.
  • the band M can go up an ascending path T31 until to a second upper roll 44, then descend, in a descending path T32, to a deflector roll 45 immersed in the final cooling bath 35.
  • the band M follows a rising path T4 to a pair of upper deflector rollers 46, 46 'spaced apart from each other, so as to pass the band over of the whole of the galvanizing section, then down, by a downward path T5, up to a lower roll 47 to be directed towards the rest of the installation, for example a skin-pass 15 mill.
  • a verification station 7 for example a control cabin for an operator.
  • This station 7 can thus be placed between the first ascending section T2 of the outlet of the metal bath 31 and the last descending section T5 of the outlet of the installation, deflector rollers 48 allowing, possibly, to provide the necessary location for the station 7 .
  • the operator sees successively before him twice the same face. Knowing the total length of the path and the running speed of the belt which can be measured at any moment, the operator can therefore locate on the exposed face A 'of the belt, immediately above the wiper device 32, a doubtful zone and, after having allowed the time necessary for scrolling, to identify the passage of the same zone on the descending path T5 in order to check the possible presence of a defect after the final cooling and hardening of the coating.
  • the arrangement according to the invention thus makes it possible to guarantee the best possible integrity of the exposed face of the coated strip.
  • cooling cells 61, 62 may advantageously be staggered on the ascending and descending strands.
  • the two strands T2, T3 can be separated by a single upper roller 42, which further reduces the footprint of the assembly.
  • such an arrangement makes it possible to distribute the cells 6 over a greater length of strip and thus to have a less violent blowing, which reduces the risk of producing a vibration of the strip which may have an impact on the quality of the coating. , in particular, the regulation of its thickness.
  • the invention is not limited to the case where, to reduce the length of the annealing line, the strip follows a zig-zag path by passing over two sets of rollers spaced apart in height. Indeed, the invention can also be applied to the case of a continuous annealing furnace in which the band scrolls horizontally over a large length.
  • the quenching bath 35 which, according to the invention, is offset backward from the galvanizing bath 31, can be placed above the outlet end of the annealing enclosure 8 'whose height is, then , relatively reduced.
  • the third part T3 of the path of the strip then extends horizontally and returns upstream to the quench tank 35 which is shifted back a sufficient distance to dispose the necessary cooling means 6 along said strand T3 .
  • the fourth portion T4 of quenching bath 35 then returns horizontally downstream passing above said cooling means 6.
  • the footprint of the coating plant 3 does not substantially exceed that of the galvanizing bath 31.
  • the invention has been described in the usual case of a coating by passing on a roll immersed in a bath of liquid metal but it could also be applied to other coating devices, for example of the type in which the metal bath of galvanization is maintained by magnetic levitation by means of induction coils arranged along the upward path of the strip after passing on the lower roller 41 which, in this case, is not immersed.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Thermal Sciences (AREA)
  • Coating With Molten Metal (AREA)
  • Paints Or Removers (AREA)

Claims (10)

  1. Ausrüstung zur Beschichtung eines bandförmigen Produkts (M) beim Durchlaufen eines Flüssigmetallbades (31) mit Mitteln zum Steuern des Ablaufens des Produkts (M) zwischen einer Eintrittsseite des Flüssigmetallbads (31) und einer Austrittsseite der Ausrüstung entlang einer kontinuierlichen Ablauflinie, die durch eine Vielzahl von Umlenkwalzen definiert wird und mindestens vier Teile umfasst, und zwar einen ersten Eintrittsteil (T1) des Metallbades, in dem das Band über eine erste Umlenkwalze (41), die auf einer unteren Ebene angeordnet ist, läuft, einen zweiten Austrittsteil (T2) des Bades (31) in aufsteigender Richtung zwischen der ersten unteren Walze (41) und einer zweiten, auf einer höheren Ebene über dem Metallbad (31) angeordneten Umlenkwalze (42), mindestens einen dritten Kühlteil (T3), der sich zwischen der oberen Walze (42) und einem Bad zur abschließenden Kühlung (35) erstreckt und an dem entlang Mittel (34) zum Kühlen der Beschichtung durch eine gasförmige Flüssigkeit angeordnet sind, und einen vierten Austrittsteil (T4) des Bades zur abschließenden Kühlung (35), dadurch gekennzeichnet, dass das Bad zur abschließenden Kühlung (35) auf einer höheren Ebene als das Metallbad (31) und in Bezug auf dieses zur Eintrittsseite hin versetzt angeordnet ist, so dass die Stellfläche der gesamten Beschichtungsausrüstung kaum größer als die des Metallbades (31) ist, über dem das Band (M) im vierten Teil (T4) seiner Bahn zwischen dem Bad zur abschließenden Kühlung (35) und dem Austritt der Ausrüstung läuft.
  2. Beschichtungsausrüstung nach Anspruch 1, dadurch gekennzeichnet, dass das Band (M) mit einer ersten Seite (A) an der ersten Umlenkwalze (41) anliegt, wenn es von einer ersten Eintrittsseite in das Metallbad (31) kommt, und mit derselben ersten Seite (A) an der zweiten, auf der höheren Ebene angeordneten Umlenkwalze (42) anliegt, so dass der dritte Kühlteil (T3) in Bezug auf den zweiten Austrittsteil (T2) des Bades zu derselben ersten Seite des Metallbades (31) hin angeordnet ist.
  3. Beschichtungsausrüstung nach Anspruch 2, dadurch gekennzeichnet, dass sie eine Station (7) zur Prüfung der Qualität der Beschichtung umfasst, die auf der zweiten Seite des Metallbades (31) gegenüber der ersten Eintrittsseite des Bandes (M) angeordnet ist und vor der im ersten aufsteigenden Austrittsteil (T2) des Metallbades die zweite Seite (A') des Bandes entlangläuft, die der ersten, an der ersten und zweiten Umlenkwalze (41, 42) anliegenden Seite (A) entgegengesetzt ist, und dass das Band über eine Umlenkwalze (45) läuft, die in das Bad zur abschließenden Kühlung (35) eingetaucht ist, wobei es mit seiner zweiten Seite (A') an der eingetauchten Walze (45) anliegt, dann im vierten Austrittsteil (T4) des Kühlbades (35) wieder über die gesamte Ausrüstung läuft und dabei mit derselben zweiten Seite (A') an zwei oberen, beabstandeten Walzen (46, 46') anliegt und in einem letzten absteigenden Austrittsteil der Ausrüstung (T5) wieder heruntergeführt wird, wobei dieselbe Seite (A') des Bandes (M) vor der Prüfstation (7) entlangläuft, so dass der Zustand der Beschichtung auf dieser zweiten Seite zum einem beim Austritt aus dem Metallbad (31) und zum anderen beim Austritt aus der Ausrüstung nach dem abschließenden Kühlen geprüft wird.
  4. Beschichtungsausrüstung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass sie mindestens ein Mittel zum Kühlen (6) durch Blasen von Gas auf die beiden Seiten (A, A') des Bandes (M) umfasst, das entlang von dessen Bahn entweder stromauf der zweiten Umlenkwalze (42) im zweiten Austrittsteil des Metallbades (T2) oder stromab der zweiten Umlenkwalze (42) am Anfang des dritten Kühlteils (T3) angeordnet ist.
  5. Beschichtungsausrüstung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass sie ein Mittel zum Erwärmen (32) des Bandes (M) umfasst, das im zweiten Austrittsteil (T2) des Metallbades (31) unmittelbar über diesem angeordnet ist.
  6. Beschichtungsausrüstung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der dritte Kühlteil (T3) einen einzigen abwärts führenden Strang von der zweiten Umlenkwalze (42) bis zum flüssigen Kühlbad (35) umfasst.
  7. Beschichtungsausrüstung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der dritte Kühlteil (T3) von der zweiten Umlenkwalze (42) an, die auf einer höheren Ebene angeordnet ist, einen ersten abwärts führenden Strang (T3) bis zu einer dritten Umlenkwalze (43), die unter der zweiten Walze (42) und über dem Metallbad (31) angeordnet ist, einen zweiten aufwärts führenden Strang (T31) zwischen der dritten Walze (43) und einer vierten Umlenkwalze (44), die in etwa auf der Höhe der zweiten Walze (42) angeordnet ist, und einen dritten abwärts führenden Strang (T32) zwischen der vierten Walze (44) und dem flüssigen Kühlbad (35) umfasst, wobei Kühlmittel (6) mindestens an einem der beiden Stränge, dem aufwärts führenden (T2) und dem abwärts führenden (T3), stromauf der dritten Umlenkwalze (43) angeordnet sind, so dass ein Anliegen des Bandes an der dritten Umlenkwalze mit einer zweiten Seite (A'), die der ersten, an der ersten und zweiten Umlenkwalze (41, 42) anliegenden Seite (A) entgegengesetzt ist, ermöglicht wird, ohne die auf diese zweite Seite (A') aufgebrachte Beschichtung zu beschädigen.
  8. Beschichtungsausrüstung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass Kühlmittel (61, 62) an der aufwärts führenden Bahn (T2) zwischen der ersten (41) und der zweiten (42) Umlenkwalze bzw. an der abwärts führenden Bahn (T3) zwischen der zweiten oberen Walze (42) und der dritten unteren Walze (43) angeordnet sind, wobei die Kühlmittel (6) in der Höhe versetzt und in Fünfpunktanordnung angeordnet sind.
  9. Beschichtungsausrüstung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass sie in Bandlaufrichtung gesehen stromab einer Glühanlage angeordnet ist, die sich in einem geschlossenen Gehäuse befindet, um eine nicht oxidierende Atmosphäre aufrechtzuerhalten, wobei das Band zwischen zwei Reihen von in der Höhe beabstandeten Umlenkwalzen läuft, wobei dieses Gehäuse an einem Austrittsende durch eine vertikale Wand abgeschlossen wird, deren Höhe dem Abstand zwischen den Umlenkwalzen entspricht und die in ihrem unteren Teil mit einer geschlossenen Rinne zum Austreten des Bandes zum Galvanisierungsbad hin ausgestattet ist, und dass die gesamte Beschichtungsausrüstung in einem engen Raum angeordnet ist, der sich vertikal entlang der vertikalen Abschlusswand des Gehäuses erstreckt und horizontal über einen Abstand, welcher der Stellfläche des Metallbades mit der Austrittsrinne für das Band entspricht.
  10. Beschichtungsausrüstung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass sie in Bandlaufrichtung gesehen stromab einer Glühanlage angeordnet ist, die sich zum Aufrechterhalten einer nicht oxidierenden Atmosphäre in einem geschlossenen Gehäuse befindet, wobei sich dieses Gehäuse horizontal zwischen einem Eintrittsende und einem Austrittsende mit einer im Galvanisierungsbad (31) einmündenden Verbindungsrinne erstreckt, dass das Bad zur abschließenden Kühlung (35) über dem Gehäuse der Glühanlage und in einem bestimmten Abstand stromauf des Austrittsendes angeordnet ist und dass der dritte Teil (T3) der Bahn des Bandes, an dem entlang Kühlmittel (6) angeordnet sind, sich horizontal über dem Gehäuse der Glühanlage erstreckt, wobei er stromauf bis zum Bad zur abschließenden Kühlung (35) zurückgeführt wird, von dem an sich der vierte Teil (T4) zum Austreten aus dem Bad horizontal stromab erstreckt und dabei oberhalb der Kühlmittel (6) verläuft.
EP08830457A 2007-08-10 2008-07-03 Ausrüstung zur beschichtung eines blechstreifens Not-in-force EP2173918B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0757022A FR2919816B1 (fr) 2007-08-10 2007-08-10 Installation de revetement d'une bande metallique
PCT/FR2008/000970 WO2009034244A1 (fr) 2007-08-10 2008-07-03 Installation de revetement d'une bande metallique

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EP2173918A1 EP2173918A1 (de) 2010-04-14
EP2173918B1 true EP2173918B1 (de) 2010-12-01

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AT (1) ATE490351T1 (de)
DE (1) DE602008003833D1 (de)
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Publication number Priority date Publication date Assignee Title
FR2817876B1 (fr) * 2000-12-08 2003-03-28 Vai Clecim Installation de production d'une bande metallique avec revetement de protection

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FR2919816B1 (fr) 2009-10-09
FR2919816A1 (fr) 2009-02-13
WO2009034244A1 (fr) 2009-03-19
EP2173918A1 (de) 2010-04-14
DE602008003833D1 (de) 2011-01-13
ATE490351T1 (de) 2010-12-15

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