EP3075878A1 - Procede et dispositif d'application d'une solution de traitement aqueuse sur la surface d'une bande mobile - Google Patents

Procede 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
EP3075878A1
EP3075878A1 EP15196824.5A EP15196824A EP3075878A1 EP 3075878 A1 EP3075878 A1 EP 3075878A1 EP 15196824 A EP15196824 A EP 15196824A EP 3075878 A1 EP3075878 A1 EP 3075878A1
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EP
European Patent Office
Prior art keywords
roller
belt
treatment solution
aqueous
spray
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
EP15196824.5A
Other languages
German (de)
English (en)
Other versions
EP3075878B1 (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
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 ThyssenKrupp AG, ThyssenKrupp Rasselstein GmbH filed Critical ThyssenKrupp AG
Publication of EP3075878A1 publication Critical patent/EP3075878A1/fr
Application granted granted Critical
Publication of EP3075878B1 publication Critical patent/EP3075878B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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.
  • 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.
  • the known spraying and dipping processes are frequent 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 strip surface without it after blotting the applied treatment solution to blotchy appearances can come on the tape 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 roll of a roll coater by means of a rotary sprayer, the rotary sprayer having a plurality of spray rotors arranged side by side in the longitudinal direction of the roll, to which the aqueous treatment solution is supplied and which are rotated by a spray rotor drive, to spray the treatment solution due to centrifugal force in the form of a spray jet on the surface of the roller.
  • the aqueous processing solution is then applied to at least one surface of the tape moving at a predetermined tape speed by passing the tape past a rotating applicator roll of the roll coater, wherein the aqueous processing solution is transferred in the form of a wet film from the applicator roll to the surface of the tape.
  • the rotating roll of the roll coater on which the treatment solution is first sprayed on by the rotary sprayer
  • it may be the application roll itself.
  • the rotating roll on which the treatment solution is sprayed by the rotary sprayer may also be a transfer roll which is arranged with respect to the application roll of the roll coater so that their axes are parallel to each other and whose surfaces are in contact with each other.
  • the aqueous treatment solution is first sprayed by the rotary sprayer on the rotating transfer roller and transferred from this 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 velocity.
  • 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 tape travel direction 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 carried out 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 spray rotors on the rotating rolls of the roll coater optionally directly on the application roll
  • only the amount of the aqueous treatment solution actually required to achieve a desired dry coverage of the treatment solution is applied to the application roll and from there to the surface of the strip to be treated.
  • 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 a device for carrying out the method according to the invention for applying an aqueous treatment 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.
  • the steel strip 1 is passed through 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, in order to dry the steel strip surfaces and to blow off disturbing foreign particles.
  • Applicator 10 shown in detail, comprises a rotary sprayer 2 and a roller coater 20.
  • the rotary sprayer 2 has a plurality of spray rotors 3 arranged side by side and spaced apart from one another in the direction of the strip running direction.
  • 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 Stockpiled treatment solution 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 which moves 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 FIG Rollcoaters 20 in 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 of the axes of rotation of the smoothing rollers running parallel to one another and parallel to the steel belt surface has an angle of approximately 30 ° to 60 ° and, in particular, of the steel belt 1 passed through the two smoothing rollers includes 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 Treatment solution squeezed off the belt 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 a further embodiment of an apparatus for carrying out the method according to the invention is shown in a side view.
  • 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 the embodiment of FIG. 2 ,
  • the rotating application roller 21, which in the embodiment of FIG. 3 Rotates counterclockwise, the aqueous treatment solution applied to a surface of the belt with the belt speed along the belt running v linearly moving belt 1.
  • the moving belt 1 is in a transfer region 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 on the Surface of the application roller 21 adhering treatment solution transferred to the tape surface O.
  • a second application device 10' is arranged on the other side of the band 1, that is the side of the second band surface O '.
  • This serves to apply the aqueous treatment solution to the second strip surface O 'of the strip 1 and also comprises a roll coater 20' and a rotary sprayer 2 '.
  • the roll coater 20 'of the second application device 10' comprises two rotating rollers, namely a first rotating roller 21 'in the form of an application roller and a second rotating roller 22 in the form of a transfer roller.
  • 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.
  • the rotary sprayer 2 ' is arranged with a plurality of spray rotors 3 arranged side by side in the longitudinal direction of the transfer roller 22.
  • 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 equalizing or smoothing the wet film in particular two mutually offset smoothing rollers 5a, 5b.
  • rollers 21; 21 ', 22 of the roller coater 20; 20 'of the device of FIG. 3 it is expedient to arrange the roll coaters 20, 20 'and the associated rotary sprayers 2, 2' on slidable slides 25, 25 '.
  • the carriages 25, 25 ' are displaceable transversely to the direction of travel of the strip, so that the first application device 10 and the second application device 10' can be moved away from the belt 1 when the rotating rollers of the roller coater 20, 20 'are required.
  • the contact pressure of the application rollers 21, 21 'of the two roller coater 20, 20' can be adjusted to the surfaces O, O 'of the belt 1 via the displaceable carriages 25, 25'.
  • 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.
  • an application device 10 or 10 ' for a one-sided coating of the tape 1 with the aqueous treatment solution, an application device 10 or 10 'according to the invention can be arranged on only one side, around the surface O or O' facing the application device 10 or 10 'with the aqueous treatment solution to coat.
  • 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 10 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 thereby be provided with a metallic corrosion protection layer, such as a tin layer, for example. be coated.
  • 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)
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)

Application Number Priority Date Filing Date Title
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

Publications (2)

Publication Number Publication Date
EP3075878A1 true EP3075878A1 (fr) 2016-10-05
EP3075878B1 EP3075878B1 (fr) 2018-06-13

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EP15196824.5A Active EP3075878B1 (fr) 2015-03-31 2015-11-27 Procédé et dispositif d'application d'une solution de traitement aqueuse sur la surface d'une bande mobile

Country Status (7)

Country Link
US (1) US20160288152A1 (fr)
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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EP0248985A2 (fr) * 1986-06-10 1987-12-16 Billhöfer Maschinenfabrik GmbH Dispositif d'enduction pour machines de lacquage
DE69805182T2 (de) * 1997-08-08 2002-11-28 Lorraine Laminage Verfahren und vorrichtung zum kontinuierlichen beschichten eines metallbandes mit einem film aus vernetzbarem fliessfähigem polymer
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
WO2009047209A1 (fr) * 2007-10-05 2009-04-16 Basf Se Procédé pour recouvrir des feuillards d'acier zingués au moyen de formulations aqueuses de polymères acides
WO2009158292A1 (fr) * 2008-06-25 2009-12-30 Goss International Americas, Inc. Applicateur de silicone pour presse à imprimer
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.
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CA2919575C (fr) 2019-09-24
CA2919575A1 (fr) 2016-07-01
DE102015104974B3 (de) 2016-06-16
TR201810711T4 (tr) 2018-08-27
BR102016000398A2 (pt) 2016-10-04
ES2676752T3 (es) 2018-07-24
BR102016000398B1 (pt) 2021-03-30
EP3075878B1 (fr) 2018-06-13

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