EP3129158B1 - Method and apparatus for coating a continuous moving metal strip and installation for continuous rolling of metal pieces - Google Patents
Method and apparatus for coating a continuous moving metal strip and installation for continuous rolling of metal pieces Download PDFInfo
- Publication number
- EP3129158B1 EP3129158B1 EP15713325.7A EP15713325A EP3129158B1 EP 3129158 B1 EP3129158 B1 EP 3129158B1 EP 15713325 A EP15713325 A EP 15713325A EP 3129158 B1 EP3129158 B1 EP 3129158B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal strip
- application
- roller element
- strip
- 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.)
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Links
- 239000002184 metal Substances 0.000 title claims description 123
- 229910052751 metal Inorganic materials 0.000 title claims description 123
- 238000000576 coating method Methods 0.000 title claims description 72
- 239000011248 coating agent Substances 0.000 title claims description 71
- 238000000034 method Methods 0.000 title claims description 21
- 238000005096 rolling process Methods 0.000 title description 7
- 238000009434 installation Methods 0.000 title description 2
- 238000006073 displacement reaction Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
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- 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
-
- 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
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
- C23C2/20—Strips; Plates
-
- 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
- B05C1/0826—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 the work being a web or sheets
- B05C1/083—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 the work being a web or sheets being passed between the coating roller and one or more backing rollers
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/14—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts
Definitions
- the invention relates, on the one hand, to a method for coating a metal strip moving in the direction of strip travel, in which the metal strip is guided past an application device for applying a coating medium such that the coating medium is applied to a metal strip surface of the metal strip by means of an application roller element of the application device is applied.
- the invention relates to a device for coating a metal strip moving in the direction of travel of a strip according to the preamble of claim 4 with an applicator device comprising at least one applicator roll element for applying a coating medium to a metal strip surface of the metal strip with a strip guiding device for guiding the metal strip in the strip running direction along one the at least one Applizierrollenelement passing leading transport path, with a feed device for delivering the at least one Applizierrollenelements, so that during an Appliziervorgangs the at least one Applizierrollenelement in contact with the metal strip surface is in contact, that the coating medium of the at least one Applizierrollenelement on the metal strip surface is transferable.
- the invention further relates to a plant for producing elongated metallic rolling stock with a device for coating a metal strip.
- Generic methods and devices are known from the prior art, in particular in connection with systems for producing elongated metallic rolling goods known. There, they are often used for the application of liquid coating media on elongated metallic rolling, such as metal belts. These applied coating media can form a wide variety of functional layers with different properties on a correspondingly treated surface of the metal strips after a drying process, depending on which coating medium was selected.
- the respective application is effected by a transfer of a liquid film from a job roll element to the surface of a metal strip guided past it.
- one or more of such application roller elements can rotate with or in opposite directions of a strip running direction of the metal strip and / or synchronously or asynchronously to the speed of the passing metal strip in order to achieve a desired high-quality surface coating.
- the application roller elements are often still coated with a plastic jacket.
- a corresponding coating is applied by means of a roll coater on a steel strip passing through this device, the roll coater being assigned at least one melt bath for a coating metal with a scoop roller immersed therein and a design roller controlling the thickness of the coating application and an applicator roll cooperating with the steel strip ,
- the steel strip is guided along a transport path, wherein the steel strip is deflected by means of guide rollers fed to the applicator roll and a counter-pressure roller opposite this and then passed through a gap between the applicator roll and the counter-pressure roller corresponding thereto.
- a metal coating can be applied to a metallic carrier tape by means of known machine types of roll coaters.
- the coating installation has a coating roller, an application device for a coating material, a masking belt guided by means of deflection rollers over the coating roller and a belt guide for the metal belt running over the coating roller.
- the coating roll may have a differently curved outer contour.
- the surface of the coating roll is concave or conically shaped toward the center of the roll, whereby the edge regions of the metal strip are pressed more strongly onto the roll surface. In this way, an additional seal against the liquid coating material at the strip edges can be achieved.
- a device for one-sided coating of an endless belt with, for example, liquid zinc known, in which a at least partially immersed in a molten bath scoop roller is rotationally driven in opposite directions to the strip running direction. It is provided between the scoop roller shell and the belt surface a free rotary movement of the scoop gestattender permitting slight gap to allow a proper uniform metallic coating of the continuous belt with low construction costs with exact adjustability of the coating thickness.
- a disadvantage of the above-mentioned devices for coating a metallic carrier tape is that especially the contact of the strip edges of the respective metal strip with the application roller element, the surface of the latter can attack mechanically such that this conditionally, can lead to critical coating defects on the metal strip surface.
- a relative movement between the surface of the application roller element and the metal belt surface interacting therewith can lead to increased wear on the application roller element.
- the invention has for its object to further develop generic methods and apparatus for coating elongate metallic rolling stock such that at least the above-mentioned disadvantages can be overcome.
- the object of the invention is achieved by a method for coating a metal strip moving in the strip running direction, in which the metal strip is guided past an applicator for applying a coating medium such that the coating medium is applied to a metal strip surface of the metal strip by means of at least one applicator roller element of the applicator wherein an Appliziervorgang is temporarily interrupted so that the at least one Applizierrollenelement and the metal strip are lifted from each other, then relatively transversely to each other transversely to the tape travel direction, and that then this briefly interrupted Appliziervorgang is continued with transversely staggered Applizierrollenelement and metal strip to coating defects to avoid the metal strip surface to be coated.
- the operative contact between the at least one Applizierrollenelement and the metal strip is repealed, and only then it comes to the relative movement or displacement. This also avoids the risk of damaging the at least one applicator roller element.
- a particularly preferred embodiment variant provides that the at least one Applizierrollenelement relative to a transport path along which the metal strip is transportable, positionally adjustable, in particular height adjustable, is arranged to separate the at least one Applizierrollenelement with the metal strip in operative contact.
- the at least one Applizierrollenelement and the metal strip are separated during the Appliziervorgangs before a weld or stitching seam of two successive metal strip sections from each other to be moved transversely to the strip running direction. In this way it can be prevented that the surface of the at least one Applizierrollenelements is mechanically damaged by contact with a weld or stitching.
- the risk of running in of the edge regions of the metal strip in the surface of the at least one application roller element can be particularly well prevented if the metal strip and / or the at least one Applizierrollenelement be moved oscillating transverse to the strip running direction.
- the device has means for oscillating the metal strip and / or at least one applicator roller element transversely to the web running direction.
- Such means for oscillating can be realized by various constructions.
- a belt center control system installed in front of the applicator can be used to continuously oscillate the metal belt around the center line of the conveyor system or the transport path.
- the effectiveness of the methods or the devices can be increased if the applicator device comprises more than one Applizierrollenelement, wherein on both sides of the transport path at least one of the Applizierrollen 1952 is arranged. Furthermore, it is thereby possible to apply coatings on both sides of the metal strip. Cumulatively or alternatively, it is also possible to place a plurality of such Applizierrollen 1952 on one or both sides of the transport path to achieve an increase in performance.
- the present applicator can already be realized within the meaning of the invention by a single Applizierrollenelement which is arranged on one side, ie top or bottom, the transport path. If a metal strip is to be coated on both sides, in each case a single application roller element can be provided on each of the two sides of the transport path. Alternatively, however, the applicator may consist of an ensemble of several applicator roller elements, which are arranged approximately only on one side or on both sides of the transport path. Depending on the configuration, the applicator can form a roller applicator for applying a coating medium or it can be a component of such a roller applicator.
- the device comprises a control and / or regulating device, by means of which a transverse displacement movement of the metal strip and / or the at least one Applizierrollenelements is adjustable such that caused by the transverse displacement movement quality losses are excluded in the coating.
- the object of the invention is also achieved by a plant for producing elongate metallic rolling stock with a device for coating a metal strip, wherein the system is characterized by one of the devices described herein.
- the in the FIG. 1 The first device 1 not according to the invention for coating a metal strip 2 has an applicator 3 by means of which the metal strip 2 moving along a transport path 4 in the strip running direction 5 can be coated with a coating medium (not shown).
- the tape running direction 5 in this case points into the plane of the paper.
- the applicator 3 shown in this variant is characterized by an applicator top unit 6, which is placed on an upper side 7 of the transport path 4, and by an applicator sub-unit 8, which is placed on a lower side 9 of the transport path 4.
- the Applizieranyen 6 and 8 in this case comprise a Applizierrollenelement 10 and 11, which are each rotationally supported with a rotary shaft 12 and 13 in the Applizieroberiata 6 and in the Applizierunteriens 8 are supported.
- each applicator roller element 10 or 11 is assigned yet another roller element 10A or 11A, so that each of the two applicator units 6 and 8 is equipped with at least two roller elements 10 and 10A or 11 and 11A.
- the apparatus 1 further comprises metal strip transverse displacement means (not shown) comprising a belt centering control system (also not shown here) for displacing the metal belt 2 in the transverse direction 14 while being moved in the belt running direction 5 in an application process and during the operation Metal strip 2 is in operative contact with the two Applizierrollenimplenimpln 10 and 11.
- the metal strip 2 oscillates around the middle layer 15 of the transport path 4 from a left side region 16 of the transport path 4 to a right side region 17 of the transport path 4 in an amplitude region 18, thereby avoiding edge regions 19 (FIG. numbered here only by way of example) into the surfaces 21 (numbered here only by way of example) of the applicator roller elements 10 and 11 and cause grooves or the like there.
- the device 1 moreover has a feed device, not shown here, for feeding the applicator roll elements 10 and 11 relative to the transport web 4 and, to that extent, also against the metal strip 2, whereby the applicator device 3 is adjusted to metal strips 2 of different thicknesses can be.
- FIG. 2 This limitation exists in the FIG. 2 not shown alternative device 101.
- the device 101 has a similar structure to that in the FIG. 1
- an alternative concept is shown, in which the metal strip 102 is not displaced in the transverse direction 114 to the strip running direction 115. Instead, the entire applicator top unit 106 arranged on the upper side 107 moves with the upper applicator roller element 110 and the further upper roller element 110A associated with it, and the entire applicator subassembly 108 arranged on the lower side 109 with the lower applicator roller element 111 and the further lower roller element 111A associated with it with the transverse displacement movement 122 back and forth.
- the device 101 comprises transverse displacement means (not shown) for displacing the two applicator units 110 and / or 111 transversely to the strip running direction 105 of the metal strip 102, in order to apply the two application units 106 and / or 108 transversely to the transport path 104, while applying the coating medium the metal strip 102 relative to relocate.
- the two application units 110 and 111 can be displaced independently of each other, for example, individually or synchronously in the transverse direction 114.
- only the Applizierrollenide 110 and 111 could be displaced in the transverse direction 114 without the other roller elements 110A and 111A.
- the metal strip 102 does not oscillate or oscillate about the central position 115 between the two side regions 116 and 117, but instead the two application units 106 and 108 each move around an amplitude region 118 or about a corresponding contact region 123 between the two side areas 116 and 117 back and forth.
- the corresponding transverse displacement movement 122 also takes place during an application process when the metal strip 102 is guided in the strip running direction 105 along the transport path 104 and is in operative contact with the application roller elements 110 and 111.
- the transverse displacement means can be designed differently. For example, they comprise transversal transverse parts extending transversely to the transport path 104, on which the two application units 106 and / or 108 or at least the application roller elements 110 and 111 are mounted transversely displaceable.
- the device 101 is designed in such a way that, during operation, the application roller elements 110 and 111 or the entire applicator top unit 106 or the entire applicator subunit 108 can be displaced continuously oscillating transversely to the strip running direction 105 about the middle position 115 of the transport track 104.
- the transverse movement also takes place here with a very slow acceleration or speed and the limited amplitude range 118, wherein the acceleration, the speed and the amplitude range 118 are selected such that no negative effects on the quality of the coating occur.
- This alternative concept can be implemented both in connection with application devices in which the metal strip passes freely between the application units and with application units in which the metal strip is guided over a counter-roller.
- FIG. 3 illustrated embodiment, for which the already in the FIG. 2 shown device 101 can be used.
- an application process is temporarily interrupted only because the two application units 106 and 108 can be lifted off the metal strip 102 in accordance with the lifting direction 130 and removed. Subsequently, these are displaced relative to one another transversely to the strip running direction 105, in order subsequently to continue the briefly interrupted application process with applicator roll elements 110 or 111 and metal strip 102 displaced transversely from one another. This also damage to the surfaces of the Applizierrollenmaschine 110 and 111 can be avoided. Unlike the two in the Figures 1 and 2 explained concepts are in the in the FIG.
- Fig. 3 The concept according to Fig. 3 can be both in connection with Applizier drivenen in which the metal strip passes freely between the Applizierüen, as well as with Applizierüen in which the metal strip is passed over a counter-roll, implement.
- the devices 1 and 101 respectively comprise means for oscillating (not shown).
- each of the devices 1 and 101 is still characterized by a control and / or regulating device, likewise not shown here, by means of which a transverse displacement movement 22 or 122 of the metal strip 2 or 102 and / or the Applizierechen 6 and 8 or 106 and 108 or at least the Applizierrolleniata 10, 11 and 110, 111 is adjustable such that due to the transverse displacement movement 22 or 122 caused quality losses in the coating are excluded.
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- Engineering & Computer Science (AREA)
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- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
Die Erfindung betrifft einerseits ein Verfahren zum Beschichten eines sich in Bandlaufrichtung bewegenden Metallbands nach dem Oberbegriff von Anspruch 1, bei welchem das Metallband an einer Appliziereinrichtung zum Applizieren eines Beschichtungsmediums derart vorbei geführt wird, dass das Beschichtungsmedium mittels eines Applizierrollenelements der Appliziereinrichtung an einer Metallbandoberfläche des Metallbands appliziert wird.
Die Erfindung betrifft andererseits eine Vorrichtung zum Beschichten eines sich in Bandlaufrichtung bewegenden Metallbands nach dem Oberbegriff von Anspruch 4, mit einer wenigstens ein Applizierrollenelement umfassenden Appliziereinrichtung zum Applizieren eines Beschichtungsmediums an einer Metallbandoberfläche des Metallbands, mit einer Bandführungseinrichtung zum Führen des Metallbands in Bandlaufrichtung entlang einer an dem wenigstens einen Applizierrollenelement vorbeiführenden Transportbahn, mit einer Zustelleinrichtung zum Zustellen des wenigstens einen Applizierrollenelements, so dass sich während eines Appliziervorgangs das wenigstens eine Applizierrollenelement mit der Metallbandoberfläche derart in Kontakt befindbar ist, dass das Beschichtungsmedium von dem wenigstens einen Applizierrollenelement auf die Metallbandoberfläche übertragbar ist.
Die Erfindung betrifft des Weiteren eine Anlage zum Herstellen von länglichen metallischen Walzgütern mit einer Vorrichtung zum Beschichten eines Metallbands. Gattungsgemäße Verfahren und Vorrichtungen sind aus dem Stand der Technik insbesondere im Zusammenhang mit Anlagen zum Herstellen von länglichen metallischen Walzgütern bekannt. Dort werden sie häufig zur Applikation von flüssigen Beschichtungsmedien auf längliche metallische Walzgüter, wie eben Metallbänder, eingesetzt. Diese applizierten Beschichtungsmedien können nach einem Trocknungsvorgang unterschiedlichste Funktionsschichten mit unterschiedlichen Eigenschaften auf einer entsprechend behandelten Oberfläche der Metallbänder bilden, je nachdem welches Beschichtungsmedium gewählt wurde. Die jeweilige Applikation erfolgt dabei durch eine Übertragung eines Flüssigkeitsfilms von einem Auftragsrollenelement auf die daran vorbeigeführte Oberfläche eines Metallbands. Je nach Anwendungsfall können sich eine oder mehrere solcher Auftragsrollenelemente mit oder gegenläufig einer Bandlaufrichtung des Metallbands und/oder synchron oder asynchron zur Geschwindigkeit des vorbeilaufenden Metallbandes drehen, um eine gewünschte qualitativ hochwertige Oberflächenbeschichtung zu erzielen. Um die Gefahr von Beschädigungen der Metallbandoberfläche weiter zu reduzieren sind die Auftragsrollenelemente oftmals noch mit einem Kunststoffmantel überzogen.The invention relates, on the one hand, to a method for coating a metal strip moving in the direction of strip travel, in which the metal strip is guided past an application device for applying a coating medium such that the coating medium is applied to a metal strip surface of the metal strip by means of an application roller element of the application device is applied.
The invention, on the other hand, relates to a device for coating a metal strip moving in the direction of travel of a strip according to the preamble of
The invention further relates to a plant for producing elongated metallic rolling stock with a device for coating a metal strip. Generic methods and devices are known from the prior art, in particular in connection with systems for producing elongated metallic rolling goods known. There, they are often used for the application of liquid coating media on elongated metallic rolling, such as metal belts. These applied coating media can form a wide variety of functional layers with different properties on a correspondingly treated surface of the metal strips after a drying process, depending on which coating medium was selected. The respective application is effected by a transfer of a liquid film from a job roll element to the surface of a metal strip guided past it. Depending on the application, one or more of such application roller elements can rotate with or in opposite directions of a strip running direction of the metal strip and / or synchronously or asynchronously to the speed of the passing metal strip in order to achieve a desired high-quality surface coating. In order to further reduce the risk of damage to the metal strip surface, the application roller elements are often still coated with a plastic jacket.
Beispielsweise ist aus der
Des Weiteren ist aus der
Ferner ist aus der
Nachteilig bei den vorstehend genannten Vorrichtungen zum Beschichten eines metallischen Trägerbands ist es, dass speziell der Kontakt der Bandkanten des jeweiligen Metallbands mit dem Auftragsrollenelement, die Oberfläche von Letzterem derart mechanisch angreifen kann, dass es hierdurch bedingt, zu kritischen Beschichtungsfehlern an der Metallbandoberfläche kommen kann. Insbesondere eine Relativbewegung zwischen der Oberfläche des Auftragsrollenelements und der hiermit wechselwirkenden Metallbandoberfläche kann zu einem erhöhten Verschleiß an dem Auftragsrollenelement führen.A disadvantage of the above-mentioned devices for coating a metallic carrier tape is that especially the contact of the strip edges of the respective metal strip with the application roller element, the surface of the latter can attack mechanically such that this conditionally, can lead to critical coating defects on the metal strip surface. In particular, a relative movement between the surface of the application roller element and the metal belt surface interacting therewith can lead to increased wear on the application roller element.
Besonders die diesbezüglichen Bandkanten schneiden häufig bereits nach kurzer Betriebsdauer in eine kunststoffbeschichtete Mantelfläche des Auftragsrollenelements ein, wodurch es bereits bei geringen Bandverläufen zu kritischen Beschichtungsfehlern kommen kann.
Aus
Out
Aus den gattungsgemäßen
Der Erfindung liegt die Aufgabe zugrunde, gattungsgemäße Verfahren und Vorrichtungen zum Beschichten von länglichen metallischen Walzgütern derart weiterzuentwickeln, dass zumindest die vorstehend genannten Nachteile überwunden werden können.The invention has for its object to further develop generic methods and apparatus for coating elongate metallic rolling stock such that at least the above-mentioned disadvantages can be overcome.
Die Aufgabe der Erfindung wird von einem Verfahren zum Beschichten eines sich in Bandlaufrichtung bewegenden Metallbands gelöst, bei welchem das Metallband an einer Appliziereinrichtung zum Applizieren eines Beschichtungsmediums derart vorbei geführt wird, dass das Beschichtungsmedium mittels wenigstens eines Applizierrollenelements der Appliziereinrichtung an einer Metallbandoberfläche des Metallbands appliziert wird, wobei ein Appliziervorgang temporär derart unterbrochen wird, dass das wenigstens eine Applizierrollenelement und das Metallband voneinander abgehoben werden, dann zueinander quer zu der Bandlaufrichtung relativ verlagert werden, und dass anschließend dieser kurzzeitig unterbrochene Appliziervorgang mit quer zueinander versetzten Applizierrollenelement und Metallband fortgesetzt wird, um Beschichtungsfehler an der zu beschichtenden Metallbandoberfläche zu vermeiden.The object of the invention is achieved by a method for coating a metal strip moving in the strip running direction, in which the metal strip is guided past an applicator for applying a coating medium such that the coating medium is applied to a metal strip surface of the metal strip by means of at least one applicator roller element of the applicator wherein an Appliziervorgang is temporarily interrupted so that the at least one Applizierrollenelement and the metal strip are lifted from each other, then relatively transversely to each other transversely to the tape travel direction, and that then this briefly interrupted Appliziervorgang is continued with transversely staggered Applizierrollenelement and metal strip to coating defects to avoid the metal strip surface to be coated.
Bei der Erfindung wird der Wirkkontakt zwischen dem wenigstens einen Applizierrollenelement und dem Metallband aufgehoben, und erst dann kommt es zu der Relativbewegung bzw. -verschiebung. Auch hierdurch kann die Gefahr einer Beschädigung des wenigstens einen Applizierrollenelements vermieden werden.In the invention, the operative contact between the at least one Applizierrollenelement and the metal strip is repealed, and only then it comes to the relative movement or displacement. This also avoids the risk of damaging the at least one applicator roller element.
Eine insbesondere hierzu bevorzugte Ausführungsvariante sieht vor, dass das wenigstens eine Applizierrollenelement gegenüber einer Transportbahn, entlang welcher das Metallband transportierbar ist, positionsverstellbar, insbesondere höhenverstellbar, angeordnet ist, um das wenigstens eine Applizierrollenelement mit dem in Wirkkontakt stehenden Metallband zu trennen.A particularly preferred embodiment variant provides that the at least one Applizierrollenelement relative to a transport path along which the metal strip is transportable, positionally adjustable, in particular height adjustable, is arranged to separate the at least one Applizierrollenelement with the metal strip in operative contact.
Besonders zweckmäßig insbesondere hinsichtlich der letztgenannten Verfahrensvariante ist es, wenn das wenigstens eine Applizierrollenelement quer zu der Bandlaufrichtung des Metallbands relativ verlagert wird, bevor der Wirkkontakt zwischen dem wenigstens einen Applizierrollenelement und dem Metallband wieder hergestellt wird. Hierdurch kann eine berührungsfreie Querverlagerungsbewegung erzielt werden.Particularly expedient, in particular with regard to the last-mentioned method variant, is when the at least one application roller element transversely to the Tape running direction of the metal strip is relatively displaced before the operative contact between the at least one Applizierrollenelement and the metal strip is restored. As a result, a contact-free transverse displacement movement can be achieved.
Besonders vorteilhaft ist es, wenn das wenigstens eine Applizierrollenelement und das Metallband während des Appliziervorgangs vor einer Schweiß- oder Heftnaht zweier aufeinander folgender Metallbandabschnitte voneinander getrennt werden, um zueinander quer zu der Bandlaufrichtung verlagert zu werden. Hierdurch kann verhindert werden, dass die Oberfläche des wenigstens einen Applizierrollenelements durch einen Kontakt mit einer Schweiß- oder Heftnaht mechanisch beschädigt wird.It is particularly advantageous if the at least one Applizierrollenelement and the metal strip are separated during the Appliziervorgangs before a weld or stitching seam of two successive metal strip sections from each other to be moved transversely to the strip running direction. In this way it can be prevented that the surface of the at least one Applizierrollenelements is mechanically damaged by contact with a weld or stitching.
Die Gefahr eines Einlaufens der Randbereiche des Metallbands in die Oberfläche des wenigstens einen Applikationsrollenelements kann besonders gut verhindert werden, wenn das Metallband und/oder das wenigstens eine Applizierrollenelement quer zu der Bandlaufrichtung oszillierend verlagert werden.The risk of running in of the edge regions of the metal strip in the surface of the at least one application roller element can be particularly well prevented if the metal strip and / or the at least one Applizierrollenelement be moved oscillating transverse to the strip running direction.
Insofern ist es vorteilhaft, wenn die Vorrichtung Mittel zum Oszillieren des Metallbands und/oder wenigstens einen Applizierrollenelements quer zur Bahnlaufrichtung aufweist. Derartige Mittel zum Oszillieren können durch verschiedene Konstruktionen realisiert werden. Beispielsweise kann ein vor der Appliziereinrichtung installiertes Bandmittenregelungssystem dazu verwendet werden, das Metallband kontinuierlich um die Mittellinie der Bandanlage bzw. der Transportbahn oszillieren zu lassen.In this respect, it is advantageous if the device has means for oscillating the metal strip and / or at least one applicator roller element transversely to the web running direction. Such means for oscillating can be realized by various constructions. For example, a belt center control system installed in front of the applicator can be used to continuously oscillate the metal belt around the center line of the conveyor system or the transport path.
Die Effektivität der Verfahren bzw. der Vorrichtungen kann gesteigert werden, wenn die Appliziereinrichtung mehr als ein Applizierrollenelement umfasst, wobei beidseits der Transportbahn wenigstens eines der Applizierrollenelemente angeordnet ist. Ferner ist es hierdurch möglich, Beschichtungen beidseitig auf das Metallband aufzutragen. Kumulativ oder alternativ ist es auch möglich, mehrere solcher Applizierrollenelemente an einer oder beiden Seiten der Transportbahn zu platzieren, um eine Leistungssteigerung zu erzielen.The effectiveness of the methods or the devices can be increased if the applicator device comprises more than one Applizierrollenelement, wherein on both sides of the transport path at least one of the Applizierrollenelemente is arranged. Furthermore, it is thereby possible to apply coatings on both sides of the metal strip. Cumulatively or alternatively, it is also possible to place a plurality of such Applizierrollenelemente on one or both sides of the transport path to achieve an increase in performance.
Die vorliegende Appliziereinrichtung kann im Sinne der Erfindung bereits durch ein einzelnes Applizierrollenelement realisiert sein, welches auf einer Seite, also Ober-oder Unterseite, der Transportbahn angeordnet ist. Soll ein Metallband beidseitig beschichtet werden, kann jeweils ein einzelnes Applizierrollenelement auf jeder der beiden Seiten der Transportbahn vorgesehen sein. Die Appliziereinrichtung kann alternativ hierzu jedoch auch aus einem Ensemble aus mehreren Applizierrollenelementen bestehen, welche etwa lediglich auf einer Seite oder auf beiden Seiten der Transportbahn angeordnet sind. Die Appliziereinrichtung kann je nach Ausgestaltung ein Rollenauftragswerk zum Auftragen eines Beschichtungsmediums bilden oder ein Bestandteil eines solchen Rollenauftragswerks sein.The present applicator can already be realized within the meaning of the invention by a single Applizierrollenelement which is arranged on one side, ie top or bottom, the transport path. If a metal strip is to be coated on both sides, in each case a single application roller element can be provided on each of the two sides of the transport path. Alternatively, however, the applicator may consist of an ensemble of several applicator roller elements, which are arranged approximately only on one side or on both sides of the transport path. Depending on the configuration, the applicator can form a roller applicator for applying a coating medium or it can be a component of such a roller applicator.
Insgesamt soll eine im Sinne der Erfindung durchgeführte Querverlagerungsbewegung des Metallbands und/oder des Applizierrollenelements mit einer derart gewählten sehr langsamen Beschleunigung, Geschwindigkeit und mit einer derart gewählten begrenzten Amplitude erfolgen, dass keine negativen Auswirkungen der Beschichtungsqualität auftreten.Overall, carried out in the context of the invention, a transverse displacement movement of the metal strip and / or the Applizierrollenelements with such a selected very slow acceleration, speed and with such a limited amplitude chosen so that no negative effects of coating quality occur.
Insofern ist es vorteilhaft, wenn die Vorrichtung eine Steuerungs- und/oder Regelungseinrichtung umfasst, mittels welcher eine Querverlagerungsbewegung des Metallbands und/oder des wenigstens einen Applizierrollenelements derart einstellbar ist, dass durch die Querverlagerungsbewegung bedingte Qualitätseinbußen bei der Beschichtung ausgeschlossen sind.In this respect, it is advantageous if the device comprises a control and / or regulating device, by means of which a transverse displacement movement of the metal strip and / or the at least one Applizierrollenelements is adjustable such that caused by the transverse displacement movement quality losses are excluded in the coating.
An dieser Stelle sei erwähnt, dass die Querverlagerungsbewegung des Metallbands und/oder des Applizierrollenelements bei allen Konzepten im Wesentlichen in Richtung der Längserstreckung des Applizierrollenelements gerichtet ist.It should be noted at this point that the transverse displacement movement of the metal strip and / or the Applizierrollenelements is directed in all concepts substantially in the direction of the longitudinal extension of the Applizierrollenelements.
Die Aufgabe der Erfindung wird auch von einer Anlage zum Herstellen von länglichen metallischen Walzgütern mit einer Vorrichtung zum Beschichten eines Metallbands gelöst, wobei sich die Anlage durch eine der vorliegend beschriebenen Vorrichtungen auszeichnet. Mittels einer derart ausgerüsteten Anlage können hierdurch hergestellte Walzgüter besonders betriebssicher mit
einer hochwertigen Oberflächenbeschichtung hergestellt werden, wodurch die Gefahr eines Oberflächengüte bedingten Ausschusses signifikant reduziert werden kann.The object of the invention is also achieved by a plant for producing elongate metallic rolling stock with a device for coating a metal strip, wherein the system is characterized by one of the devices described herein. By means of a plant equipped in this way, rolled goods produced as a result can be used particularly reliably
a high-quality surface coating can be produced, whereby the risk of a surface quality-related rejection can be significantly reduced.
Jedenfalls kann mit den hier beschriebenen Lösungen ein Verschleiß an den Applizierrollenelementen signifikant reduziert werden. Speziell die Gefahr eines Einschneidens von Bandkanten von zu beschichtenden Metallbändern in kunststoffbeschichtete Oberflächen der Applizierrollenelemente kann wirkungsvoll vermieden werden. Insofern können Beschichtungsfehler vermieden werden, welche ansonsten bereits schon bei geringen Bandverläufen auftreten können.
Weitere Merkmale, Effekte und Vorteile vorliegender Erfindung werden anhand anliegender Zeichnung und nachfolgender Beschreibung erläutert, in welchen beispielhaft alternative erfindungsgemäße (
In der Zeichnung zeigen:
- Figur 1
- schematisch eine Querschnittsansicht einer mit MetallbandQuerverlagerungsmitteln ausgerüsteten Vorrichtung zum Beschichten eines sich in Bandlaufrichtung bewegenden Metallbands, bei welcher während eines Appliziervorgangs eines Beschichtungsmediums das Metallband quer zu der Bandlaufrichtung gegenüber einem Applizierrollenelement relativ verlagert wird, wobei die Vorrichtung dieser Figur nicht Teil der vorliegenden Erfindung ist;
Figur 2- schematisch eine Querschnittsansicht einer mit Querverlagerungsmitteln ausgerüsteten alternativen Vorrichtung zum Beschichten eines sich in Bandlaufrichtung bewegenden Metallbands, bei welcher während eines Appliziervorgangs eines Beschichtungsmediums Applizierrollenelemente quer zu der Bandlaufrichtung gegenüber dem sich in Bandlaufrichtung bewegenden Metallband relativ verlagert werden, wobei die Vorrichtung dieser Figur nicht Teil der vorliegenden Erfindung ist; und und
Figur 3- schematisch eine Querschnittsansicht einer mit Querverlagerungsmitteln ausgerüsteten erfindungsgemäßen Vorrichtung zum Beschichten eines sich in Bandlaufrichtung bewegenden Metallbands, bei welcher während eines kurzzeitig unterbrochenen Appliziervorgangs eines Beschichtungsmediums Applizierrollenelemente quer zu der Bandlaufrichtung gegenüber dem sich in Bandlaufrichtung bewegenden Metallband relativ verlagert werden.
Further features, effects and advantages of the present invention will be explained with reference to the appended drawing and the following description, in which alternative (according to the invention)
In the drawing show:
- FIG. 1
- 12 is a schematic cross-sectional view of a metal belt cross-straightening device for coating a strip-moving metal belt, wherein during a coating medium application process, the metal belt is relatively displaced transversely to the belt travel direction relative to an applicator roller element, the apparatus of which is not part of the present invention;
- FIG. 2
- schematically a cross-sectional view of an alternative device equipped with Querverlagerungsmitteln for coating a moving in the direction of tape travel metal strip, wherein during a Appliziervorgangs a coating medium Applizierrollenelemente transversely to the strip running direction relative to the moving in the direction of tape travel metal strip are relatively displaced, the device of this figure is not part of the present invention; and and
- FIG. 3
- schematically a cross-sectional view of an equipped with transverse displacement means device according to the invention for coating a moving belt in the direction of strip metal strip, wherein during a briefly interrupted Appliziervorgangs a coating medium Applizierrollenelemente transversely to the strip running direction relative to the moving strip in the direction of metal strip relatively moved.
Die in der
Metallband 2 mit den beiden Applizierrollenelementen 10 und 11 in Wirkkontakt steht. Hierbei oszilliert das Metallband 2 um die Mittellage 15 der Transportbahn 4 von einem linken Seitenbereich 16 der Transportbahn 4 zu einem rechten Seitenbereich 17 der Transportbahn 4 in einem Amplitudenbereich 18 hin und her, wodurch vermieden wird, dass sich an den Randbereichen 19 vorhandene Kantenbereiche 20 (hier nur exemplarisch beziffert) in die Oberflächen 21 (hier nur exemplarisch beziffert) der Applizierrollenelemente 10 und 11 einlaufen und dort Rillen oder dergleichen verursachen. Vielmehr gelingt es durch eine hierdurch erzeugte Querverlagerungsbewegung 22 der Materialbahn 2, einen wesentlich breiteren Kontaktbereich 23 als einen ansonsten nur vorhandenen Linienkontakt zu erzeugen. Hierdurch ist die Gefahr signifikant reduziert, dass sich Beschichtungsfehler an der Metallbandoberfläche ausbilden können. Dieser Kontaktbereich 23 entspricht im Wesentlichen dem Amplitudenbereich 18. Die Vorrichtung 1 weist darüber hinaus eine hier nicht dargestellte Zustelleinrichtung zum Zustellen der Applizierrollenelemente 10 und 11 gegenüber der Transportbahn 4 und insofern auch gegenüber dem Metallband 2, wodurch die Appliziereinrichtung 3 auf unterschiedlich starke Metallbänder 2 eingestellt werden kann.The in the
Konstruktionsbedingt lässt sich dieses vorstehend beschriebene erste Konzept sehr gut mit Appliziereinrichtungen umsetzen, bei welchen das Metallband im Wesentlichen frei zwischen zwei Appliziereinheiten hindurchläuft. Andere Appliziereinrichtungen, bei welchen das Metallband zusätzlich etwa über eine Gegenrolle geführt ist, sind hierfür eher weniger geeignet.By design, this first concept described above can be implemented very well with applicators in which the metal strip passes essentially freely between two application units. Other Appliziereinrichtungen, in which the metal strip is guided in addition about a counter-roll, are less suitable for this purpose.
Diese Einschränkung besteht bei der in der
und dem ihm zugeordneten weiteren oberen Rollenelement 110A sowie die gesamte an der unteren Seite 109 angeordnete Applizieruntereinheit 108 mit dem unteren Applizierrollenelement 111 und dem ihm zugeordneten weiteren unteren Rollenelement 111A mit der Querverlagerungsbewegung 122 hin und her. Hierzu umfasst die Vorrichtung 101 Quer-Verlagerungsmittel (nicht gezeigt) zum Verlagern der beiden Appliziereinheiten 110 und/oder 111 quer zur Bandlaufrichtung 105 des Metallbands 102, um während des Applizierens des Beschichtungsmediums die beiden Appliziereinheiten 106 und/oder 108 quer zu der Transportbahn 104 gegenüber dem Metallband 102 relativ zu verlagern. Hierbei können die beiden Appliziereinheiten 110 und 111 beispielsweise unabhängig voneinander einzeln oder synchron miteinander in Querrichtung 114 verlagert werden. Bei einer abgewandelten Lösung könnten auch nur die Applizierrollenelemente 110 bzw. 111 ohne die weiteren Rollenelemente 110A und 111A in Querrichtung 114 verlagert werden. Jedenfalls schwärmt bzw. pendelt bei diesem alternativen Konzept nicht das Metallband 102 um die Mittellage 115 zwischen den beiden Seitenbereichen 116 und 117 hin und her, sondern es wandern vielmehr die beiden Appliziereinheiten 106 und 108 jeweils um einen Amplitudenbereich 118 bzw. um einen entsprechenden Kontaktbereich 123 zwischen den beiden Seitenbereichen 116 und 117 hin und her. Die entsprechende Querverlagerungsbewegung 122 erfolgt hierbei ebenfalls während eines Appliziervorgangs, wenn das Metallband 102 in Bandlaufrichtung 105 entlang der Transportbahn 104 geführt wird und hierbei mit den Applizierrollenelementen 110 und 111 in Wirkkontakt steht. Somit kann auch hierdurch ein reiner Linienkontakt zwischen den Kantenbereichen 120 des Metallbands 102 und dem jeweiligen Applizierrollenelement 110 bzw. 111 vermieden werden, wodurch die Oberflächen der Applizierrollenelemente 110 und 111 geschont werden. Die Quer-Verlagerungsmittel können unterschiedlichst konstruiert sein. Beispielsweise umfassen sie sich quer zu der Transportbahn 104 erstreckende Quertraversenteile, an welchen die beiden Appliziereinheiten 106 und/oder 108 oder zumindest die Applizierrollenelemente 110 bzw. 111 querverschieblich gelagert sind.This limitation exists in the
and the further upper roller element 110A associated with it, and the
Jedenfalls ist die Vorrichtung 101 derart konzipiert, dass im Betrieb die Applikationsrollenelemente 110 und 111 oder die gesamte Applizierobereinheit 106 bzw. die gesamte Applizieruntereinheit 108 kontinuierlich oszillierend quer zur Bandlaufrichtung 105 um die Mittellage 115 der Transportbahn 104 verschoben werden können. Die Querbewegung erfolgt auch hierbei mit einer sehr langsamen Beschleunigung bzw. Geschwindigkeit und dem begrenzten Amplitudenbereich 118, wobei die Beschleunigung, die Geschwindigkeit und der Amplitudenbereich 118 derart gewählt sind, dass keine negativen Auswirkungen auf die Qualität der Beschichtung auftreten.In any case, the
Dieses alternative Konzept lässt sich sowohl im Zusammenhang mit Appliziereinrichtungen, bei welchen das Metallband frei zwischen den Appliziereinheiten durchläuft, als auch mit Appliziereinheiten, bei welchen das Metallband über eine Gegenrolle geführt wird, umsetzen.This alternative concept can be implemented both in connection with application devices in which the metal strip passes freely between the application units and with application units in which the metal strip is guided over a counter-roller.
In Bezug auf die Variante gemäß
Ein Konzept gemäß der vorliegenden Erfindung wird anhand des in der
Das Konzept gemäß
Alle vorstehend beschriebenen Konzepte verfolgen unter anderem das wesentliche Ziel, dass der Kontaktpunkt zwischen dem Kantenbereich 20 bzw. 120 des jeweiligen Metallbands 2 bzw. 102 und den Applizierrollenelementen 10 und 11 bzw. 110 und 111 ständig verändert wird, um die Gefahr von kritischen Einschnitten an den Oberflächen 21 bzw. 121 der Applizierrollenelemente 10 und 11 bzw. 110 und 111 zu verringern.Among other things, all the concepts described above pursue the essential goal that the contact point between the
Hierfür ist bei allen vorstehend erläuterten Konzepten vorteilhafterweise vorgesehen, dass das jeweilige Metallband 2 bzw. 102 und/oder die Appliziereinheiten 6 und 8 bzw. 106 und 108 oder zumindest die Applizierrollenelemente 10, 11 bzw. 110, 111 kontrolliert und permanent leicht und langsam in Querrichtung 14 bzw. 114 oszillieren. Insofern ist es vorteilhaft, wenn
die Vorrichtungen 1 bzw. 101 entsprechende Mittel zum Oszillieren (nicht dargestellt) umfassen.For this purpose, it is advantageously provided in all the concepts explained above that the
the
Darüber hinaus zeichnet sich jeder der Vorrichtungen 1 und 101 noch durch eine hier jedoch ebenfalls nicht gezeigte Steuerungs- und/oder Regelungseinrichtung aus, mittels welcher eine Querverlagerungsbewegung 22 bzw. 122 des Metallbands 2 bzw. 102 und/oder der Appliziereinheiten 6 und 8 bzw. 106 und 108 oder zumindest der Applizierrollenelemente 10, 11 bzw. 110, 111 derart einstellbar ist, dass durch die Querverlagerungsbewegung 22 bzw. 122 bedingte Qualitätseinbußen bei der Beschichtung ausgeschlossen sind.In addition, each of the
Es versteht sich, dass es sich bei dem vorstehend erläuterten Ausführungsbeispiel lediglich um erste Ausgestaltungen der erfindungsgemäßen Vorrichtung handelt. Insofern beschränkt sich die Ausgestaltung der Erfindung nicht auf diesem Ausführungsbeispiel, sondern auf die nachstehenden Ansprüchen.It is understood that the exemplary embodiment explained above is only a first embodiment of the device according to the invention. In this respect, the embodiment of the invention is not limited to this embodiment, but to the following claims.
Claims (9)
- Method of coating a metal strip (102) moving in strip running direction (105), in which the metal strip (102) is so led past an application device (103) for application of a coating medium that the coating medium is applied by means of at least one application roller element (100, 111) of the application device (103) to a metal strip surface of the metal strip (102), characterised in that an application process is temporarily interrupted in such a way that the at least one application roller element (110, 111) and the metal strip (102) are lifted off one another, then are displaced relative to one another transversely to the strip running direction (105) and subsequently this temporarily interrupted application process is continued with application roller element (110, 111) and metal strip (102) offset transversely relative to one another so as to avoid coating faults on the metal strip surface to be coated.
- Method according to claim 1, characterised in that the at least one application roller element (110, 111) is relatively displaced transversely to the strip running direction (105) of the metal strip (102) before the operative contact between the at least one application roller element (110, 111) and the metal strip (102) is reinstated.
- Method according to claim 1 or 2, characterised in that the at least one application roller element (110, 111) and the metal strip (102) are, during the application process, separated from one another in front of a weld or tack seam of two successive metal strip sections so as to be displaced relative to one another transversely to the strip running direction (105).
- Device (101) for coating a metal strip (102) moving in strip running direction (105), comprising an application device (103), which comprises at least one application roller element (101, 111), for application of a coating medium to a metal strip surface of the metal strip (102), a strip guide device for guiding the metal strip (102) in strip running direction (105) along a transport path (104) leading past the at least one application roller element (110, 111), and an adjusting device for adjusting the at least one application roller element (110, 111) so that during an application process the at least one application roller element (110, 111) can be disposed in contact with the metal strip surface in such a way that the coating medium is transferrable from the at least one application roller element (110, 111) to the metal strip surface, wherein transverse displacement means for displacing the at least one roller element (110, 111) transversely to the strip running direction (105) of the metal strip (102) are provided, characterised in that the at least one application roller element (110, 111) is arranged to be displaceable in height relative to the transport path (104) so as to separate the at least one application roller element (110, 111) with the metal strip (102) disposed in operative contact, wherein the at least one application roller element (110, 111) is displaceable relative to the metal strip (102) transversely to the transport path (104) by the transverse displacing means after the application roller element (110, 111) has been separated from the metal strip (102) and before the operative contact between the application roller element (110, 111) and the metal strip (102) is reinstated.
- Device (101) according to claim 4, characterised in that the transverse displacing means comprise a transverse cross member which extends transversely to the transport path (104) and on which the at least one application roller element (110, 111) is mounted to be transversely displaceable.
- Device (101) according to claim 4 or 5, characterised in that the application device (103) comprises more than one application roller element (110, 111), wherein at least one of the application elements (110, 111) is arranged on each side of the transport path (104).
- Device (101) according to any one of claims 4 to 6, characterised in that the application device (103) comprises two mutually opposite application units (106, 108), which are arranged at a spacing from one another by the transport path (104), with at least one application roller element (110, 111), wherein each of the application units (106, 108) is displaceable transversely to the strip running direction (105).
- Device (101) according to any one of claims 4 to 7, characterised in that the device (101) comprises a control and/or regulation device by means of which a transverse displacing movement (122) of the at least one application roller element (110, 111) is so settable that losses in quality, which are caused by the transverse displacing movement (122), during the coating are excluded.
- Plant for producing elongate metallic rolled products with a device (101) for coating a metal strip (102), characterised in that the plant comprises a device (101) according to any one of claims 4 to 8.
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DE102014206839.8A DE102014206839A1 (en) | 2014-04-09 | 2014-04-09 | Method and device for coating a metal strip moving in the direction of travel of the strip as well as a device for producing elongated metallic products |
PCT/EP2015/056771 WO2015155039A1 (en) | 2014-04-09 | 2015-03-27 | Method and device for coating a metal strip moving in the strip running direction, and plant for producing elongate metallic rolled materials |
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EP3129158B1 true EP3129158B1 (en) | 2018-07-04 |
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CN (1) | CN106164324B (en) |
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DE10145105B4 (en) | 2001-09-13 | 2010-09-30 | Sms Siemag Aktiengesellschaft | Apparatus and method for metal coating steel strip |
DE102006023282B4 (en) | 2006-05-18 | 2010-04-15 | Wieland-Werke Ag | Coating plant for metal strips and method for producing one-sided partially coated metal strips |
CN203329917U (en) * | 2013-06-06 | 2013-12-11 | 浙江兆隆合金股份有限公司 | Automatic roll coating device for controlling liquid flow on surface of metal strip |
-
2014
- 2014-04-09 DE DE102014206839.8A patent/DE102014206839A1/en not_active Withdrawn
-
2015
- 2015-03-27 WO PCT/EP2015/056771 patent/WO2015155039A1/en active Application Filing
- 2015-03-27 EP EP15713325.7A patent/EP3129158B1/en active Active
- 2015-03-27 CN CN201580018684.0A patent/CN106164324B/en active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
CN106164324B (en) | 2019-03-08 |
CN106164324A (en) | 2016-11-23 |
WO2015155039A1 (en) | 2015-10-15 |
DE102014206839A1 (en) | 2015-10-15 |
EP3129158A1 (en) | 2017-02-15 |
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