EP3075878B1 - Procédé et dispositif d'application d'une solution de traitement aqueuse sur la surface d'une bande mobile - Google Patents

Procédé et dispositif d'application d'une solution de traitement aqueuse sur la surface d'une bande mobile Download PDF

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Publication number
EP3075878B1
EP3075878B1 EP15196824.5A EP15196824A EP3075878B1 EP 3075878 B1 EP3075878 B1 EP 3075878B1 EP 15196824 A EP15196824 A EP 15196824A EP 3075878 B1 EP3075878 B1 EP 3075878B1
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EP
European Patent Office
Prior art keywords
roll
treatment solution
strip
application
rotating
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.)
Active
Application number
EP15196824.5A
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German (de)
English (en)
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EP3075878A1 (fr
Inventor
Michael Wild
Paul Michels
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.)
ThyssenKrupp AG
ThyssenKrupp Rasselstein GmbH
Original Assignee
ThyssenKrupp AG
ThyssenKrupp Rasselstein GmbH
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Publication of EP3075878A1 publication Critical patent/EP3075878A1/fr
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Publication of EP3075878B1 publication Critical patent/EP3075878B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0813—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for supplying liquid or other fluent material to the roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the 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
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00—Metallic substrate
    • B05D2202/10—Metallic substrate based on Fe
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
    • B05D2401/20—Aqueous dispersion or solution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0218—Pretreatment, e.g. heating the substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
    • B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
    • B05D3/0413—Heating with air

Definitions

  • the invention relates to a method for applying an aqueous treatment solution to the surface of a belt moving at a predetermined belt speed, in particular a steel belt.
  • the invention further relates to an application device for applying an aqueous treatment solution to the surface of a belt and to an apparatus for carrying out the process which contains such an application device.
  • the WO 2009/047209 A1 shows a method of coating galvanized steel strips with aqueous acidic polymer formulations in which the aqueous formulation is transferred by means of an applicator to two opposing applicator rollers and the galvanized steel strip is moved between the two applicator rollers to deliver the aqueous formulation to the surface of the galvanized steel strip apply.
  • both the conventional spraying methods and the immersing methods have the disadvantage that larger amounts of the aqueous treatment solution are required and that an excess portion of the processing solution, which is squeezed from the surface of the belt, for example by means of squeezing rollers, collected in collecting tanks and recycled got to.
  • an uneven application of the aqueous treatment solution to the surface of the belt This becomes particularly noticeable when the belt is moved at a high belt speed of, for example, more than 400 m / min through a dipping bath with the treatment solution or when an aqueous treatment solution is applied to a belt moving at appropriate belt speeds using the spray method.
  • the DE 10 2013 107 505 A1 a method for applying an aqueous processing solution to the surface of a steel strip moving at a belt speed of 200 to 700 m / min by applying, after drying the steel strip with a gas stream, the aqueous processing solution on at least one surface of the steel strip by means of a rotary sprayer in which the rotary sprayer has a plurality of spray rotors juxtaposed transversely to the strip running direction, to which the aqueous treatment solution is supplied and which are rotated by a drive to spray the treatment solution onto the surface of the steel strip in the form of a spray jet due to centrifugal force, and there apply a wet film of the aqueous Apply treatment solution.
  • the wet film of the aqueous treatment solution applied with the rotary sprayer is then uniformed by means of powered smoothing rollers and dried.
  • a rotary sprayer caused by a drop-shaped application, inhomogeneities are produced which, after drying of the sprayed-on wet film, produce stain-like appearances.
  • the object of the invention is to show a method for applying an aqueous treatment solution to the surface of a moving belt, with the most uniform application of the treatment solution is made possible on the tape surface without it after drying of the applied Treatment solution may come to blotchy appearances on the belt surface.
  • a further object of the invention is to provide a device for carrying out the method, with which an aqueous treatment solution can be applied to the surface of a moving steel strip in as homogeneous a distribution as possible and with low rejection.
  • an aqueous treatment solution is first sprayed onto at least one rotating transfer roller of a roll coater by means of a rotary sprayer and transferred from this to an application roller, the rotary sprayer having a plurality of spray rotors arranged side by side in the longitudinal direction of the roller, to which the aqueous treatment solution is fed and which of a spray rotor drive are rotated to spray the treatment solution due to centrifugal force in the form of a spray on the surface of the transfer roller.
  • the aqueous processing solution is transferred from the transfer roller to an application roller of a roller coater whose surface is in contact with the surface of the transfer roller and applied by the application roller to at least one surface of the belt moving at a predetermined belt speed by passing the belt against the rotating application roller; wherein the aqueous processing solution in the form of a wet film is transferred from the application roller to the surface of the belt.
  • the application roller of the roll coater is arranged with respect to the transfer roller so that their axes are parallel to each other and their surfaces are in contact with each other.
  • the aqueous treatment solution is first sprayed onto the rotating transfer roller by the rotary sprayer and transferred therefrom to the application roller rolling thereon.
  • the applicator roll applies the aqueous processing solution to at least one surface of the belt by passing the belt past the rotating applicator roll at belt speed.
  • the Transfer roller and the application roller rotate in opposite directions and preferably with the same or at least approximately the same tangential speed.
  • the surface of the application roller is in contact with the surface of the belt in a transfer region, in which transfer region the direction of the tangential velocity of the surface of the rotating application roller corresponds to the direction of belt travel of the belt moving (linearly) with the belt speed.
  • the belt speed is regularly greater than 200 m / min and corresponds, for example, to the belt speed with which steel belts are moved in belt coating systems (such as strip-tinning systems) and which are typically between 200 and 700 m / min.
  • the amount of the tangential speed of the rotating application roller corresponds at least substantially to the amount of belt speed. This allows efficient application of the aqueous processing solution from the surface of the applicator roll to a surface of the belt without the possibility of friction or slippage between the moving belt and the rotating applicator roll.
  • the belt is dried with a gas stream before the belt in the transfer region comes into contact with the surface of the rotating application roller.
  • the drying of the tape is preferably carried out with an "air knife", which inflates a laminar flow of hot air on the surface of the moving belt.
  • the wet film of the treatment solution applied by the application roller may be expedient to uniformize the wet film of the treatment solution applied by the application roller to the strip surface by means of driven smoothing rolls.
  • rotating driven smoothing rollers are arranged in the strip running direction after the transfer area.
  • the wet film of the treatment solution is dried to produce a dry coating. The drying can be done in an oven or by irradiation of the coated with the treatment solution strip surface with infrared radiation.
  • the amount of aqueous treatment solution supplied to the spray rotors per unit time can be adapted to the strip speed of the strip.
  • the amount of aqueous treatment solution actually required to achieve a desired dry coverage of the treatment solution is applied to the application roller and from there to the surface of the belt to be treated by means of the spray rotors on the rotating transfer roller.
  • the rotary sprayers are expediently coupled to a supply device, which comprises a supply line, which is connected on the one hand to the spray rotors of the rotary sprayer and on the other hand with a reservoir for the treatment solution.
  • the supply device is expediently automatically controllable via a control device, wherein the control device also controls the belt speed of the belt and adapts the spray rotors per unit time supplied amount of the treatment solution to the belt speed.
  • FIG. 1 For example, an apparatus for explaining the method of applying an aqueous processing solution to the surface of a moving belt in the form of a steel strip is shown schematically.
  • the steel strip 1 is guided over a plurality of deflection rollers U and moves at a predetermined belt speed v in a strip running direction, which in FIG. 1 marked with an arrow.
  • the belt speed is regularly more than 200 m / min and up to 750 m / min.
  • the steel strip 1 can be a steel strip coated with a metal coating and cold-rolled, for example a tinplate strip or a galvanized steel strip. However, it may also be uncoated steel sheet, such as a black-plate tape.
  • the steel strip 1 is moved by a transport device not shown here with a predetermined belt speed v in a strip running direction and thereby guided over deflection rollers U.
  • a first drying device 4 to dry and clean the surfaces of the steel strip 1.
  • the first drying device 4 is formed, for example, by an "air knife” which blows a laminar flow of hot air onto the surfaces of the steel strip 1 moving through the strip speed v, thereby drying the steel strip surfaces and blowing off disturbing foreign particles.
  • An application device 10 for applying an aqueous treatment solution to the surface of the belt 1 moving in the belt running direction v at the predetermined belt speed adjoins the first drying device 4.
  • Applicator 10 shown in detail comprises a rotary sprayer 2 and a roller coater 20.
  • the rotary sprayer 2 has a plurality of transverse to the direction of tape travel next to each other and spaced apart spray rotors 3.
  • the spray rotors 3 are connected to a reservoir 9 via a central supply line 6 and diverted branch lines 6a, 6b, 6c, etc. thereof.
  • the aqueous treatment solution is stored, which is to be applied to the steel strip surface.
  • the aqueous treatment solution is expediently pumped by means of a pump 8 into the supply line 6, from where it is conducted into the branch lines 6a, 6b, 6c, wherein each branch line is connected to one of the spray rotors 3.
  • a flow meter 11 is expediently provided in the supply line 6.
  • the aqueous treatment solution is fed to the spray rotors 3 of the rotary sprayer 2.
  • the spray rotors 3 each have one of a drive in rotation offset plate. Due to the rotation of the plate of the spray rotors 3, the supplied aqueous treatment solution is conveyed by the centrifugal force to the outside of the plate.
  • the rim of the plate is shaped such that the aqueous treatment solution in the form of fine droplets flies away from the rim of the rotating plate.
  • the droplet diameter depending on the viscosity and the surface tension of the treatment solution used, is usually between 30 and 70 micrometers. The droplets of the treatment solution flowing away from the edge of the plate are sprayed in full around the rotating plate of the spray rotors 3.
  • the spray rotors 3 of the rotary sprayer 2 are arranged at a distance from the roller coater 20.
  • the roller coater 20 comprises a rotationally drivable application roller 21, which is coupled to a drive motor, not shown here, which sets it in rotation.
  • the rotating spray rotors 3 of the rotary sprayer 2 spray the aqueous treatment solution onto the surface of the application roller 21 of the roll coater 20.
  • the spray rotors 3 are arranged transversely to the strip running direction and along the longitudinal axis of the application roller 21 so that the spraying jets 12 of adjacent spray rotors 3 on the Overlap surface of the application roller 21 to ensure a uniform application of the aqueous treatment solution over the entire length of the application roller 21.
  • the rotating application roller 21 applies the treatment solution adhering to its outer periphery to a surface of the belt 1 moving linearly with the belt speed along the belt running direction v.
  • the moving belt 1 is in a transfer region 23 with the surface of the rotating application roller 21 of the roll coater 20 Contact.
  • the treatment solution adhering to the surface of the application roller 21 is transferred to the belt surface.
  • the direction of rotation and speed is thereby suitably adapted to the tape running direction v and the belt speed, so that the direction of the tangential speed at the surface of the rotating application roller 21 in the transfer region 23 corresponds to the direction of belt travel v and the amount of tangential speed at least substantially coincides with the belt speed.
  • the amount of aqueous treatment solution supplied to the spray rotors 3 per unit of time is expediently adapted to the belt speed v, with which the steel belt 1 moves.
  • ⁇ t ⁇ B 1.0 to 3.5 liters per minute and meter.
  • the amount of the wet film of the processing solution sprayed with the spray rotors 3 on the surface of the steel strip 1 is between 1 and 8 ml / m 2, and more preferably between 1 and 3 ml / m 2, and more preferably about 2 ml / m 2 .
  • the steel strip 1 can optionally be performed between rotationally driven smoothing rollers 5a, 5b.
  • the smoothing rollers 5 serve to even out the applied wet film of the aqueous solution.
  • the staggered arrangement of the smoothing rollers 5a, 5b is in the FIGS. 1 and 2 shown. Like from the FIGS.
  • the smoothing rollers 5a, 5b are arranged relative to one another such that the connecting line runs parallel to one another and parallel to the steel belt surface
  • Rotary axes of the smoothing rollers in cross-section with the performed by the two smoothing rollers steel strip 1 forms an angle of about 30 ° to 60 ° and in particular of about 45 °.
  • the smoothing rollers exert no significant contact pressure on the belt surface. As a result, no or only a very small proportion of the sprayed-on treatment solution is squeezed off from the strip surface.
  • the smoothing roller pair 5 essentially only results in equalization of the wet film of the treatment solution over the entire surface of the belt. This ensures a constant application of a wet film of the treatment solution with homogeneous layer thickness over the entire surface of the belt and it is achieved that no excess treatment solution is obtained, which would have to be collected and recycled.
  • the steel strip 1 is passed through a second drying device 7.
  • the second drying device 7 may, for example, be a drying oven or an infrared or hot-air dryer.
  • a uniform dry coating of the treatment solution remains on the or each surface of the steel strip 1, wherein the dry coating after drying is generally between 1 and 50 mg / m 2 and preferably between 2 and 30 mg / m 2 .
  • the dry coverage of the treatment solution is particularly preferably about 10 mg / m 2 .
  • FIG. 3 an embodiment of an apparatus for performing the method according to the invention is shown in a side view, which contains an applicator device according to the invention.
  • This embodiment of the device for carrying out the method according to the invention comprises a first application device 10 and a second application device 10 ', wherein the first application device 10 is arranged on one side of the belt 1 to be treated and the second application device 10' on the other side of the belt 1.
  • the first application device 10 comprises a roller coater 20, which comprises a single rotating roller, namely an application roller 21. In this single roller 21 is sprayed with a spaced apart from the roller 21 rotary sprayer 2, the aqueous treatment solution, as in relation to FIG. 2 described.
  • the moving belt 1 is in a transfer area 23 with the surface of the rotating application roller 21 of the roll coater 20 in contact. Due to the contact between the surface of the application roller 21 and the belt surface O, which faces the application roller 21, the treatment solution adhering to the surface of the application roller 21 is transferred to the belt surface O.
  • a second application device 10' On the other side of the band 1, that is the side of the second band surface O ', a second application device 10' according to the invention is arranged.
  • This application device according to the invention serves to apply the aqueous treatment solution to the second strip surface O 'of the band 1 and also comprises a roll coater 20' and a rotary sprayer 2 '.
  • the roller coater 20 'of the second application device 10' comprises two rotating rollers, namely a first rotating roller in the form of an application roller 21 'and a second rotating roller in the form of a transfer roller 22.
  • the application roller 21' and the transfer roller 22 are thereby driven in rotation and the axes of the two rotating rollers 21 ', 22 parallel to each other.
  • the surfaces of the two rotating rollers 21 ', 22 are in contact zone 24 in contact with each other.
  • the two rotating rollers 21 'and 22 rotate expediently with the same tangential velocity at their respective surface and in opposite directions to each other.
  • a rotation sprayer 2 ' having a plurality of spray rotors 3 arranged side by side in the longitudinal direction of the transfer roller 22 is arranged at a distance from the transfer roller 22 and running along it. By means of the rotary sprayer 2 ', the aqueous treatment solution is first sprayed onto the transfer roller 22 and transferred from this in the contact zone 24 to the application roller 21'.
  • the surface of the rotating application roller 21 ' is in contact with the surface O' of the belt 1 in a transfer region 23 in order to transfer the aqueous solution located on the surface of the application roller 21 to the surface O 'of the belt 1.
  • the direction of rotation and the speed of rotation are adapted to the tape running direction and the tape speed such that the direction of the tangential velocity at the surface of the rotating applicator roll 21 in the transfer region 23 corresponds to the tape running direction v and the amount of tangential velocity at least substantially coincides with the tape speed.
  • both surfaces O, O 'of the tape 1 may be provided with a wet film of the aqueous processing solution.
  • a device for smoothing out or smoothing the wet film can adjoin the two application devices 10, 10 'downstream of the strip running direction, in particular two offset smoothing rollers 5a, 5b.
  • the carriages 25, 25 ' are expediently lockable in arbitrary positions in order to be able to set a constant and constant contact pressure of the application rollers 21, 21' on the band 1 passed therebetween in order to carry out the method.
  • the invention is not limited to the embodiment illustrated here in detail and described in detail.
  • an applicator device 10 'according to the invention can be arranged on only one side in order to coat the surface O' facing the application device 10 'with the aqueous treatment solution.
  • each transfer roller is associated with a rotary sprayer 2 ', with which the aqueous treatment solution can be sprayed onto the respective transfer roller.
  • Each of the transfer rollers is in contact with the surface of the application roller 21 'in a contact zone to transfer the aqueous processing solution from the transfer roller 22 to the application roller 21'.
  • the application device is basically suitable for applying aqueous treatment solutions to one or both surfaces of moving belts and is particularly suitable for the treatment of steel belts.
  • the steel strips can be coated with a metallic corrosion protection layer, such as a tin layer.
  • the aqueous treatment solutions may, for example, be passivation solutions, as are known, for example, for the passivation of tinplate or blackplate.
  • Corresponding treatment solutions are for example in the DE 10 2013 107 505 A1 called.
  • a pre-treatment of the tape may be placed upstream, for example, an anodic oxidation or a cleaning and / or drying of the tape surface (s).

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Chemical Treatment Of Metals (AREA)

Claims (13)

  1. Procédé servant à appliquer une solution de traitement aqueuse sur une surface d'une bande (1) se déplaçant à une vitesse de bande prédéfinie dans une direction de défilement de bande (v), avec des étapes suivantes consistant à :
    - pulvériserla solution de traitement aqueuse sur au moins un cylindre (22) qui tourne d'un rouleau d'enduction (20') au moyen d'un pulvérisateur rotatif (2') avec plusieurs rotors de pulvérisation (3) disposés les uns à côté des autres dans le sens longitudinal du cylindre (22), auxquels la solution de traitement aqueuse est amenée et qui sont amenés en rotation par un entraînement de rotor de pulvérisation afin de pulvériser la solution de traitement sur la surface du cylindre (22) sous la forme d'un jet de pulvérisation du fait de la force centrifuge,
    - appliquer la solution de traitement aqueuse sur au moins une surface de la bande (1) en guidant la bande (1) au niveau d'un cylindre d'application (21') qui tourne du rouleau d'enduction (20') à la vitesse de bande prédéfinie, dans lequel la solution de traitement aqueuse est transférée sur la surface (0') de la bande (1) sous la forme d'un film humide par le cylindre d'application (21'),
    caractérisé en ce que la solution de traitement est pulvérisée par le pulvérisateur rotatif (2') sur un cylindre de transfert (22), dont l'axe s'étend de manière parallèle par rapport à l'axe du cylindre d'application (21') et dont la surface est en contact avec la surface du cylindre d'application (21').
  2. Procédé selon la revendication 1, caractérisé en ce que le cylindre de transfert (22) tourne dans le sens opposé par rapport au cylindre d'application (21'), de manière préférée à une vitesse angulaire identique ou au moins identique de manière approchante à celle du cylindre d'application (21').
  3. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la surface du cylindre d'application (21') est en contact dans une zone de transfert (23) avec la surface de la bande (1), dans lequel la direction de la vitesse tangentielle de la surface du cylindre d'application (21') qui tourne correspond dans la zone de transfert (23) à la direction de défilement de bande (v).
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la bande (1) est séchée avec un flux de gaz avant l'application de la solution de traitement, dans lequel le flux de gaz est soufflé sur la surface de la bande (1) qui se déplace de manière préférée avec un Air Knife (4) sous la forme d'un flux d'air très chaud laminaire.
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé par l'uniformisation du film humique, transféré sur la surface de la bande (1), de la solution de traitement aqueuse au moyen de rouleaux de lissage (5 ; 5a, 5b) entraînés et par le séchage consécutif du film humide appliqué de la solution de traitement afin de générer un support sec de la solution de traitement sur la surface de la bande (1).
  6. Procédé selon l'une quelconque des revendications précédentes, dans lequel la quantité de la solution de traitement amenée par unité de temps aux rotors de pulvérisation (3) est adaptée à la vitesse de bande de la bande (1).
  7. Procédé selon l'une quelconque des revendications précédentes, dans lequel la vitesse de bande se situe entre 200 et 750 m/min, et la valeur de la vitesse tangentielle du cylindre d'application (21') correspond au moins sensiblement à la vitesse de bande (v).
  8. Dispositif d'application servant à appliquer une solution de traitement aqueuse sur la surface d'une bande (1) se déplaçant à une vitesse de bande prédéfinie dans une direction de défilement de bande (v), avec
    - un rouleau d'enduction (20), qui présente au moins un premier cylindre (21') qui tourne servant à appliquer la solution de traitement aqueuse sur au moins une surface de la bande (1),
    - et un pulvérisateur rotatif (2') avec plusieurs rotors de pulvérisation (3), auquel est amenée la solution de traitement aqueuse,
    caractérisé par au moins un autre cylindre entraîné en rotation, qui est réalisé sous la forme d'un cylindre de transfert (22), dont l'axe (A') s'étend de manière parallèle par rapport à l'axe (A) du premier cylindre (21') qui tourne et dont la surface est en contact avec la surface du premier cylindre (21'), dans lequel le pulvérisateur rotatif (2') est disposé à distance par rapport au cylindre de transfert (22), les rotors de pulvérisation (3) sont disposés les uns à côté des autres le long de l'axe du cylindre de transfert (22) et sont amenés en rotation par un entraînement de rotor de pulvérisation afin de pulvériser la solution de traitement sur la surface du cylindre de transfert (22) sous la forme d'un jet de pulvérisation du fait de la forme centrifuge, dans lequel la solution de traitement est transférée par le cylindre de transfert (22) sur le premier cylindre (21') qui tourne.
  9. Dispositif d'application selon la revendication 8, caractérisé en ce que le pulvérisateur rotatif (2') est couplé à un système d'amenée (6, 8) aux fins de l'alimentation en solution de traitement aqueuse, lequel comprend un conduit d'amenée (6), qui est relié d'une part aux rotors de pulvérisation (3) du pulvérisateur rotatif (2') et d'autre part à un réservoir (9) pour la solution de traitement.
  10. Dispositif servant à mettre en oeuvre le procédé selon l'une quelconque des revendications 1 à 7, avec :
    - un système de transport servant au transport de la bande (1) dans une direction de défilement de bande (v) à une vitesse de bande prédéfinie,
    - ainsi qu'un dispositif d'application servant à appliquer une solution de traitement aqueuse sur la surface de la bande (1) se déplaçant à la vitesse de bande prédéfinie, dans lequel le dispositif d'application comprend :
    a. un rouleau d'enduction (20'), qui présente un premier cylindre (21') qui tourne servant à appliquer la solution de traitement aqueuse sur au moins une surface (O') de la bande (1), dans lequel l'axe (A) du premier cylindre (21') s'étend de manière parallèle par rapport à la surface de la bande (1) et se situe de manière perpendiculaire par rapport à la direction de défilement de bande (v),
    b. un pulvérisateur rotatif (2') avec plusieurs rotors de pulvérisation (3), auquel est amenée la solution de traitement aqueuse,
    c. au moins un autre cylindre pouvant être entraîné en rotation, qui est réalisé sous la forme d'un cylindre de transfert (22), dont l'axe (A') s'étend de manière parallèle par rapport à l'axe (A) du premier cylindre (21') qui tourne et dont la surface est en contact avec la surface du premier cylindre (21') qui tourne, dans lequel le pulvérisateur rotatif (2') est disposé à distance par rapport au cylindre de transfert (22), les rotors de pulvérisation (3) sont disposés les uns à côté des autres le long de l'axe du cylindre de transfert (22) et sont amenés en rotation par un entraînement de rotor de pulvérisation afin de pulvériser la solution de traitement sur la surface du cylindre de transfert (22) sous la forme d'un jet de pulvérisation du fait de la force centrifuge, dans lequel la solution de traitement est transférée par le cylindre de transfert (22) sur le premier cylindre (21') qui tourne et le premier cylindre (21') qui tourne du rouleau d'enduction (20') est réalisé sous la forme d'un cylindre d'application, qui est en contact dans une zone de transfert (23) avec une surface (O') de la bande (1) afin d'appliquer la solution de traitement aqueuse sur ladite surface (O') de la bande (1).
  11. Dispositif selon la revendication 10, dans lequel le premier cylindre (21'), réalisé sous la forme d'un cylindre d'application, du rouleau d'enduction (20') est couplé à un entraînement de cylindre d'application, lequel amène en rotation le premier cylindre (21').
  12. Dispositif selon la revendication 10 ou 11, dans lequel le cylindre de transfert (22) est couplé à un entraînement, qui amène en rotation le cylindre de transfert (22).
  13. Dispositif selon l'une quelconque des revendications 10 à 12, caractérisé par
    - un premier système de séchage (4) servant à sécher la bande (1),
    - une paire de rouleaux de lissage (5a, 5b) entraînés, qui sont disposés en aval du rouleau d'enduction (20') dans le sens de défilement de bande (v) et qui servent à l'uniformisation du film humide appliqué de la solution de traitement sur la surface de la bande (1),
    - ainsi qu'un deuxième système de séchage (7) servant à sécher le film humide, appliqué sur la surface de la bande (1), de la solution de traitement.
EP15196824.5A 2015-03-31 2015-11-27 Procédé et dispositif d'application d'une solution de traitement aqueuse sur la surface d'une bande mobile Active EP3075878B1 (fr)

Applications Claiming Priority (1)

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DE102015104974.0A DE102015104974B3 (de) 2015-03-31 2015-03-31 Verfahren und Auftragsvorrichtung zum Auftragen einer wässrigen Behandlungslösung auf die Oberfläche eines bewegten Bands sowie Vorrichtung zur Durchführung des Verfahrens

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EP (1) EP3075878B1 (fr)
BR (1) BR102016000398B1 (fr)
CA (1) CA2919575C (fr)
DE (1) DE102015104974B3 (fr)
ES (1) ES2676752T3 (fr)
TR (1) TR201810711T4 (fr)

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DE102015217627B4 (de) 2015-09-15 2017-07-20 Thyssenkrupp Ag Bandbearbeitungsvorrichtung sowie Verfahren zur Bearbeitung eines Bands
CN108914098A (zh) * 2018-08-15 2018-11-30 东莞市同盛电子科技有限公司 一种喷洒式表面处理线及其处理方法
JP6595138B1 (ja) * 2019-03-22 2019-10-23 株式会社小林製作所 両面塗布方法及び装置

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FR2196911B3 (fr) * 1972-08-22 1976-07-16 Roland Offsetmaschf
US4569864A (en) * 1983-06-30 1986-02-11 Acumeter Laboratories, Inc. Roll coating applicator and adhesive coatings and the like and process of coating
US4625643A (en) * 1984-08-09 1986-12-02 Davis William F Ink dispensing means
DE3619485A1 (de) * 1986-06-10 1987-12-17 Billhofer Maschf Gmbh Beschichtungswerk fuer lackiermaschinen
US5555756A (en) * 1995-01-24 1996-09-17 Inland Steel Company Method of lubricating steel strip for cold rolling, particularly temper rolling
US5795357A (en) * 1996-05-15 1998-08-18 Samsung Display Devices Co., Ltd. Electrode manufacturing method for rechargeable batteries
FR2767074B1 (fr) * 1997-08-08 1999-10-22 Lorraine Laminage Procede et dispositif de revetement en continu d'au moins une bande metallique par un film en polymere reticulable fluide
DE102005045034A1 (de) 2005-09-21 2007-03-29 Rasselstein Gmbh Verfahren zur Passivierung der Oberfläche von beschichteten Metallbändern und Vorrichtung für das Aufbringen der Passivschicht auf ein metallisch beschichtetes Stahlband
US20100224286A1 (en) * 2007-10-05 2010-09-09 Basf Se Method for coating zinc-plated steel strips with aqueous formulations of acidic polymers
US20090324818A1 (en) * 2008-06-25 2009-12-31 Goss International Americas, Inc. Silicone applicator for a printing press
DE102012102082B3 (de) 2012-03-13 2013-03-21 Thyssenkrupp Rasselstein Gmbh Verfahren zur Behandlung eines mit einer Metallbeschichtung versehenen Stahlbands oder -blechs mit einem Nachbehandlungsmittel sowie ein mit einer Metallbeschichtung versehenes Stahlband oder -blech.
DE102013107505A1 (de) * 2013-07-16 2015-01-22 Thyssenkrupp Rasselstein Gmbh Verfahren zum Auftragen einer wässrigen Behandlungslösung auf die Oberfläche eines bewegten Stahlbands

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Publication number Publication date
US20160288152A1 (en) 2016-10-06
CA2919575C (fr) 2019-09-24
CA2919575A1 (fr) 2016-07-01
DE102015104974B3 (de) 2016-06-16
EP3075878A1 (fr) 2016-10-05
TR201810711T4 (tr) 2018-08-27
BR102016000398A2 (pt) 2016-10-04
ES2676752T3 (es) 2018-07-24
BR102016000398B1 (pt) 2021-03-30

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