EP0910681B1 - Device for hot-dip coating metal band - Google Patents

Device for hot-dip coating metal band Download PDF

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Publication number
EP0910681B1
EP0910681B1 EP97931704A EP97931704A EP0910681B1 EP 0910681 B1 EP0910681 B1 EP 0910681B1 EP 97931704 A EP97931704 A EP 97931704A EP 97931704 A EP97931704 A EP 97931704A EP 0910681 B1 EP0910681 B1 EP 0910681B1
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EP
European Patent Office
Prior art keywords
channel
strip
coating
form material
container
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.)
Expired - Lifetime
Application number
EP97931704A
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German (de)
French (fr)
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EP0910681A1 (en
Inventor
Aribert Fligge
Klaus Frommann
Walter Ottersbach
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.)
SMS Siemag AG
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SMS Demag AG
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Publication date
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Publication of EP0910681A1 publication Critical patent/EP0910681A1/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
    • C23C2/24—Removing excess of molten coatings; Controlling or regulating the coating thickness using magnetic or electric fields
    • 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
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
    • B05C3/12—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length
    • B05C3/125—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length the work being a web, band, strip or the like
    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0035—Means for continuously moving substrate through, into or out of the bath
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0036—Crucibles
    • C23C2/00361—Crucibles characterised by structures including means for immersing or extracting the substrate through confining wall area
    • C23C2/00362—Details related to seals, e.g. magnetic means
    • 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
    • C23C2/006—Pattern or selective deposits
    • 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

Definitions

  • the invention relates to a device for coating band-shaped material, at which is a metal strip through a receiving the molten coating material Container is passed through the one below the melt pool level has band-shaped material enclosing channel in which by inductors in Coating material currents are induced which generate an electromagnetic force Cause retention of the covering material.
  • the channel be light is releasably attached to the bottom of the container and from several, in the direction of tape travel separable and mutually sealed parts that can be replaced of the channel individually with the band inside after loosening the separating connection are movable away from the tape in the direction of tape travel.
  • the essence of the present invention is the channel made of parts that can be separated from one another train that can be moved away from the belt to replace the channel, without the tape itself having to be cut or unthreaded. That's the channel or the parts of the channel are easily detachable at the bottom of the covering material Receiving container attached and can be in the shortest possible time after emptying be moved away from the container. In the same way, new channel parts be brought up and put together to form a new channel that there is a closed channel encompassing the band. The separable parts are sealed against each other by suitable sealants and seal the sewer liquid-tight in the working state.
  • these can be attached to the inductors and be movable or displaceable together with these. That means that at Replace the channel parts and open the closed channel Inductors, for example guided on rollers, can be moved across the belt and take the separate duct parts with you when moving.
  • the present invention enables the channel parts to be changed quickly without removing the belt beforehand and reducing the downtimes of the system considerably. This can increase the productivity of the system, while at the same time the quality of the coated metal strip is increased because of the facilitated Quick change of the worn channel parts by changing the channel caused coating irregularities are kept very low.
  • 1 denotes the container that holds the molten coating material 2 takes in.
  • the band marked 3 is in the direction of the arrow from bottom to bottom passed through the top of the container 1 and thereby with the coating material 2 coated.
  • a fastening device 5 for the Parts 6a and 6b of the channel designated 7 through which the band 3 is centered.
  • the rollers 8a, 8b in the entrance area of the Channel 7 created a stable guide for the tape 3, through which the tape 3 in in a center-centered location.
  • the inductors are on both sides of channel 7 9a, 9b arranged, which - as can be seen in the dash-dotted representation - on rollers 10, which in turn roll on guideways 11, on both sides of channel 7 are movable away.
  • FIG. 2 the same parts are labeled identically, the channel of rectangular cross-section, the cross-sectional opening depending on the thickness and width of the tapes 3 to be coated.
  • the channel shown in cross section is off composed at least two parts 6a, 6b ( Figure 3a) by suitable heat-resistant seals 12 together to form a closed channel 7 are connected.
  • the channel consists of four parts, namely the broad sides 6a, 6b and the end faces 6c, 6d which seal the broad sides and which are in turn sealed off from the broadsides at 12.
  • the channel consists of two separable parts, each L-shaped are formed, the one leg of the L-shaped cross section opposite the other leg forms the end wall of the channel and both legs at 12 are sealed against each other.
  • the advantage of the present invention is that it consists of two or more parts composite channel 7 when replacing the channel no separation in the System located metal strip required and accordingly Plant availability is increased.
  • the channel By forming the channel from two or several parts that are separable in the direction of the tape, the disassembly of the Channel with tape located therein, with quick connectors the conversion can be carried out in the shortest possible time. Between Suitable sealing elements or materials are inserted into the duct parts Prevent liquid metal from flowing out during operation.
  • the channel 7 can advantageously be heated via the inductors if after the conversion of the channel, this must be prepared for a new work cycle.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)
  • General Induction Heating (AREA)

Abstract

The invention relates to an apparatus for coating a metal strip passed through a container which holds the melted coating material. A channel is connected to the container which encloses the material in the form of a strip beneath the melt bath level. Channel currents are induced in the coating material by means of inductors and cause an electromagnetic force in order to hold the coating material back. The channel is attached to the base of the container such that it is easily detachable and comprises a plurality of parts which can be separated in the strip running direction, are sealed with respect to one another and can individually be moved away from the strip, transversely with respect to the strip running direction, to replace the channel with the strip located in it, after releasing the separation connection.

Description

Die Erfindung betrifft eine Vorrichtung zum Beschichten von bandförmigem Gut, bei der ein Metallband durch einen das geschmolzene Überzugsmaterial aufnehmenden Behälter hindurchgeführt wird, der unterhalb des Schmelzbadspiegels einen das bandförmige Gut umschließenden Kanal aufweist, in dem durch Induktoren im Überzugsmaterial Ströme induziert werden, die eine elektromagnetische Kraft zum Zurückhalten des Überzugsmaterials hervorrufen.The invention relates to a device for coating band-shaped material, at which is a metal strip through a receiving the molten coating material Container is passed through the one below the melt pool level has band-shaped material enclosing channel in which by inductors in Coating material currents are induced which generate an electromagnetic force Cause retention of the covering material.

Eine gattungsgemäße Anlage ist beispielsweise in dem deutschen Patent 43 44 939 beschrieben. Der dort das schmelzförmige Überzugsmaterial aufnehmende Behälter ist mit einer bodenseitigen Durchführungsöffnung für das zu beschichtende Band versehen, die durch eine Elektromagnetpumpe abgedichtet ist. Diese Pumpe erzeugt eine elektromagnetische Kraft, die gleich groß oder größer als der metallostatische Druck in der Öffnung des Durchlaßkanals ist. Dadurch wird das schmelzflüssige Überzugsmaterial daran gehindert, durch den Durchlaßkanal auszulaufen.A generic system is for example in the German patent 43 44 939 described. The container receiving the melted coating material there is with a bottom opening for the tape to be coated provided, which is sealed by an electromagnetic pump. This pump produces an electromagnetic force equal to or greater than the metallostatic Pressure in the opening of the passage is. This makes the liquid Coating material prevented from leaking through the passageway.

Der Durchlaßkanal ist hohen thermischen Anforderungen ausgesetzt und verschleißt dementsprechend. Aus diesem Grund ist es erforderlich, den Kanal zu ersetzen. Das Auswechseln eines einteiligen Kanals setzt voraus, daß sich kein Band mehr im Kanal befindet, und daß nach dem Wechseln der verschlissenen Bauteile ein erneutes Einfädeln des Bandes durch den Kanal erforderlich wird. Das Trennen und erneute Einfädeln des Bandes ist sehr zeitaufwendig und schwierig und stört die Produktivität der Anlage durch lange Stillstandszeiten deutlich.The passage channel is exposed to high thermal requirements and wears out accordingly. For this reason, it is necessary to replace the channel. The Replacing a one-part channel requires that there is no tape in the channel located, and that after changing the worn components a new one Threading the tape through the channel is required. The disconnect and renew Threading the tape is very time consuming and difficult and disrupts productivity of the system through long downtimes.

Ausgehend von dem beschriebenen Problem und Nachteil beim Stand der Technik ist es Aufgabe der vorliegenden Erfindung, eine gattungsgemäße Vorrichtung zum Beschichten von bandförmigem Gut so zu verbessern, daß bei minimierten Stillstandszeiten der Anlage ein Schnellwechsel des Kanals möglich wird, ohne daß das Band zertrennt werden muß.Based on the problem and disadvantage described in the prior art It is an object of the present invention to provide a generic device for Coating of strip-like material to improve so that minimized System downtimes allow the channel to be changed quickly without the tape must be cut.

Zur Lösung der Aufgabe wird erfindungsgemäß vorgeschlagen, daß der Kanal leicht lösbar am Boden des Behälters befestigt ist und aus mehreren, in Bandlaufrichtung trennbaren und gegeneinander abgedichteten Teilen besteht, die zum Auswechseln des Kanals bei darin befindlichem Band nach Lösen der Trennverbindung einzeln quer zur Bandlaufrichtung vom Band wegbewegbar sind.To achieve the object, the invention proposes that the channel be light is releasably attached to the bottom of the container and from several, in the direction of tape travel separable and mutually sealed parts that can be replaced of the channel individually with the band inside after loosening the separating connection are movable away from the tape in the direction of tape travel.

Kern der vorliegenden Erfindung ist es, den Kanal aus voneinander trennbaren Teilen auszubilden, die zum Auswechseln des Kanals vom Band wegbewegt werden können, ohne daß das Band selbst getrennt oder ausgefädelt werden muß. So ist der Kanal bzw. die Teile des Kanals sind leicht lösbar am Boden des das Überzugsmaterial aufnehmenden Behälters befestigt und können in kürzester Zeit nach dem Entleeren des Behälters wegbewegt werden. In gleicher Weise können neue Kanalteile herantransportiert werden und zur Bildung eines neuen Kanals so zusammengefügt werden, daß sich ein geschlossener, das Band umgreifender Kanal ergibt. Die trennbaren Teile sind durch geeignete Dichtmittel gegeneinander abgedichtet und schließen im Arbeitszustand den Kanal flüssigkeitsdicht ab.The essence of the present invention is the channel made of parts that can be separated from one another train that can be moved away from the belt to replace the channel, without the tape itself having to be cut or unthreaded. That's the channel or the parts of the channel are easily detachable at the bottom of the covering material Receiving container attached and can be in the shortest possible time after emptying be moved away from the container. In the same way, new channel parts be brought up and put together to form a new channel that there is a closed channel encompassing the band. The separable parts are sealed against each other by suitable sealants and seal the sewer liquid-tight in the working state.

In einer Weiterbildung der Erfindung ist vorgesehen, daß der Kanal aus einem elektrisch isolierenden Material mit guter Oberflächenbenetzbarkeit besteht, vorzugsweise wird der Kanal aus Keramikmaterial gebildet. Das Keramikmaterial ist hinsichtlich Oberflächeneigenschaft und Struktur derartig ausgebildet, daß die Oberfläche durch das flüssige Beschichtungsmetall benetzt wird. Die Induktoren, die den Kanal beidseitig einschließen, sind bei Verwendung des elektrisch isolierten Keramikmaterials besonders gut wirksam.In a further development of the invention it is provided that the channel consists of a there is electrically insulating material with good surface wettability, preferably the channel is formed from ceramic material. The ceramic material is in terms of surface properties and structure such that the Surface is wetted by the liquid coating metal. The inductors, the enclose the channel on both sides are when using the electrically insulated Ceramic material is particularly effective.

Zum Auswechseln der Kanalteile können diese an den Induktoren befestigt sein und mit diesen gemeinsam verfahr- oder verschiebbar sein. Das bedeutet, daß zum Auswechseln der Kanalteile und zum Öffnen des abgeschlossenen Kanals die Induktoren, beispielsweise auf Rollen geführt, quer zum Band verfahrbar sind und beim Verfahren die getrennten Kanalteile mitnehmen. To replace the channel parts, these can be attached to the inductors and be movable or displaceable together with these. That means that at Replace the channel parts and open the closed channel Inductors, for example guided on rollers, can be moved across the belt and take the separate duct parts with you when moving.

Es ist auch denkbar, nach einer anderen Ausführungsform der Erfindung, die Kanalteile unabhängig von den Induktoren verfahr- oder verschiebbar in der Anlage anzuordnen und beispielsweise für den Wechsel des Kanals zunächst die Induktoren zu verfahren und in einem zweiten Arbeitsschritt die Kanalteile zu verschieben.It is also conceivable, according to another embodiment of the invention, that Duct parts can be moved or moved in the system independently of the inductors to arrange and, for example, the inductors for changing the channel to move and move the channel parts in a second step.

Für das Beschichtungsverfahren ist es günstig, wenn der Kanal so abgedichtet ist, daß er gasdicht verschließbar und mit Schutzgas beaufschlagbar ist.It is favorable for the coating process if the channel is sealed in such a way that it can be closed gas-tight and can be supplied with protective gas.

Zur schnellen Lösbarkeit des Kanals ist dieser mittels Keilen oder Exzentern am Behälterboden gehalten und kann nach Lösen der Keile oder Verstellen der Exzenter kurzfristig in seine Ausbaulage gebracht werden. In jedem Fall verbleibt das Band in seiner Mittellage, während der Kanal durch Auftrennen in Kanalteile entfernt wird.For quick detachability of the channel, it is attached using wedges or eccentrics Bottom of the tank and can be removed after loosening the wedges or adjusting the eccentric can be brought into its expansion position at short notice. In any case, the tape remains in its middle position, while the channel is removed by separating it into channel parts.

Zur Führung des Bandes und zur Mittenzentrierung ist nach einem weiteren Merkmal der Erfindung vorgesehen, daß unterhalb des Kanals eine Rollenanordnung zur Führung und Zentrierung des Bandes vorgesehen ist.To guide the tape and for centering is another feature the invention provided that below the channel a roller assembly for Guide and centering of the band is provided.

Die vorliegende Erfindung ermöglicht ein Schnellwechseln der Kanalteile ohne vorheriges Entfernen des Bandes und reduziert die Stillstandszeiten der Anlage erheblich. Dadurch läßt sich die Produktivität der Anlage steigern, wobei gleichzeitig die Qualität des beschichteten Metallbandes erhöht wird, weil durch das erleichterte Schnellwechseln der verschlissenen Kanalteile die durch den Kanalwechsel hervorgerufenen Beschichtungsungleichmäßigkeiten sehr gering gehalten werden.The present invention enables the channel parts to be changed quickly without removing the belt beforehand and reducing the downtimes of the system considerably. This can increase the productivity of the system, while at the same time the quality of the coated metal strip is increased because of the facilitated Quick change of the worn channel parts by changing the channel caused coating irregularities are kept very low.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschrieben. Es zeigt:

Figur 1
in schematischer Darstellung eine erfindungsgemäße Vorrichtung zum Schmelztauchbeschichten von Bändern im Querschnitt,
Figur 2
die Vorrichtung nach Figur 1 in um 90° gedrehter Darstellung,
Figur 3 a-d
Querschnitte durch verschiedene geteilte Kanäle, und
Figur 4
ein Beispiel der Befestigung des Kanals am Behälterboden.
An embodiment of the invention is shown in the drawing and is described below. It shows:
Figure 1
a schematic representation of a device according to the invention for hot dip coating of strips in cross section,
Figure 2
1 in a representation rotated by 90 °,
Figure 3 ad
Cross sections through different divided channels, and
Figure 4
an example of the attachment of the channel to the tank bottom.

In Figur 1 ist mit 1 der Behälter bezeichnet, der das geschmolzene Überzugsmaterial 2 in sich aufnimmt. Das mit 3 bezeichnete Band wird in Pfeilrichtung von unten nach oben durch den Behälter 1 hindurchgeführt und dabei mit dem Überzugsmaterial 2 beschichtet. Am Boden 4 des Behälters 1 ist eine Befestigungsvorrichtung 5 für die Teile 6a und 6b des mit 7 bezeichneten Kanals vorgesehen, durch den das Band 3 zentriert hindurchgeführt wird. Durch die Rollen 8a, 8b wird im Eintrittsbereich des Kanals 7 eine stabile Führung für das Band 3 geschaffen, durch die das Band 3 in einer mittenzentrierten Lage gehalten wird. Beidseitig des Kanals 7 sind die Induktoren 9a, 9b angeordnet, die - wie in der strichpunktierten Darstellung erkennbar - auf Rollen 10, die ihrerseits auf Führungsbahnen 11 abrollen, nach beiden Seiten vom Kanal 7 wegbewegbar sind.In FIG. 1, 1 denotes the container that holds the molten coating material 2 takes in. The band marked 3 is in the direction of the arrow from bottom to bottom passed through the top of the container 1 and thereby with the coating material 2 coated. At the bottom 4 of the container 1 is a fastening device 5 for the Parts 6a and 6b of the channel designated 7 through which the band 3 is centered. The rollers 8a, 8b in the entrance area of the Channel 7 created a stable guide for the tape 3, through which the tape 3 in in a center-centered location. The inductors are on both sides of channel 7 9a, 9b arranged, which - as can be seen in the dash-dotted representation - on rollers 10, which in turn roll on guideways 11, on both sides of channel 7 are movable away.

In Figur 2 sind gleiche Teile gleich bezeichnet, erkennbar ist der Kanal von rechteckigem Querschnitt, wobei die Querschnittsöffnung von der Dicke und Breite der zu beschichtenden Bänder 3 abhängt.In FIG. 2, the same parts are labeled identically, the channel of rectangular cross-section, the cross-sectional opening depending on the thickness and width of the tapes 3 to be coated.

Wie in den Figuren 3a-d zu erkennen ist, ist der im Querschnitt dargestellte Kanal aus mindestens zwei Teilen 6a, 6b (Figur 3a) zusammengesetzt, die durch geeignete hitzebeständige Dichtungen 12 miteinander zu einem geschlossenen Kanal 7 verbunden sind. In Figur 3b besteht der Kanal aus vier Teilen, nämlich den Breitseiten 6a, 6b und den die Breitseiten abdichtend verschließenden Stirnseiten 6c, 6d, die wiederum gegenüber den Breitseiten bei 12 abgedichtet sind. Im Ausführungsbeispiel der Figur 3c besteht der Kanal aus zwei trennbaren Teilen, die jeweils L-förmig ausgebildet sind, wobei der eine Schenkel des L-förmigen Querschnittes gegenüber dem anderen Schenkel die Stirnwand des Kanals bildet und beide Schenkel bei 12 gegeneinander abgedichtet sind. Im Ausführungsbeispiel der Figur 3d ist ebenfalls ein zweigeteilter Kanal 7 vorgesehen, wobei eine der Stirnwände fest, also stationär an einem nicht näher bezeichneten Anlagenteil verbleibt, während der andere Kanalteil 6a praktisch über das Band gestülpt wird und mit dem festen Kanalteil bei 12 abdichtend verbunden wird.As can be seen in FIGS. 3a-d, the channel shown in cross section is off composed at least two parts 6a, 6b (Figure 3a) by suitable heat-resistant seals 12 together to form a closed channel 7 are connected. In Figure 3b, the channel consists of four parts, namely the broad sides 6a, 6b and the end faces 6c, 6d which seal the broad sides and which are in turn sealed off from the broadsides at 12. In the embodiment 3c the channel consists of two separable parts, each L-shaped are formed, the one leg of the L-shaped cross section opposite the other leg forms the end wall of the channel and both legs at 12 are sealed against each other. In the exemplary embodiment in FIG. 3d there is also a Two-part channel 7 is provided, one of the end walls being fixed, that is to say stationary one part of the plant, not specified, remains, while the other part of the duct 6a is practically put over the tape and sealing with the fixed channel part at 12 is connected.

In Figur 4 ist schematisch angedeutet, wie beispielsweise die Festlegung des Kanals 7 am Boden 4 des Behälters 1 erfolgt, nämlich über miteinander kämmende Keile 13, die durch Verschieben des Kanals 7 in Pfeilrichtung 14 in Wirkverbindung miteinander gebracht werden. Auf diese Weise läßt sich der Kanal 7 sehr schnell mit dem Boden 4 des Behälters 1 verbinden und ebenso schnell lösen.FIG. 4 schematically indicates how, for example, the channel 7 is fixed at the bottom 4 of the container 1, namely via intermeshing wedges 13 which by moving the channel 7 in the direction of arrow 14 in operative connection with one another to be brought. In this way, the channel 7 can be ground 4 very quickly Connect the container 1 and release it just as quickly.

Vorteil der vorliegenden Erfindung ist es, daß der aus zwei oder mehr Teilen zusammengesetzte Kanal 7 beim Auswechseln des Kanals kein Trennen des in der Anlage befindlichen Metallbandes erforderlich macht und dementsprechend die Verfügbarkeit der Anlage erhöht wird. Durch Ausbildung des Kanals aus zwei oder mehreren Teilen, die in Bandlaufrichtung trennbar sind, wird das Demontieren des Kanals bei darin befindlichem Band ermöglicht, wobei durch Schnellverbindungselemente der Umbau in kürzester Zeit durchgeführt werden kann. Zwischen den Kanalteilen sind geeignete Dichtungselemente oder Materialien eingefügt, die ein Ausfließen des flüssigen Metalles während des Betriebes verhindern. Vorteilhafterweise läßt sich der Kanal 7 über die Induktoren erwärmen, wenn nach dem Umbau des Kanals dieser für einen neuen Arbeitszyklus vorbereitet werden muß.The advantage of the present invention is that it consists of two or more parts composite channel 7 when replacing the channel no separation in the System located metal strip required and accordingly Plant availability is increased. By forming the channel from two or several parts that are separable in the direction of the tape, the disassembly of the Channel with tape located therein, with quick connectors the conversion can be carried out in the shortest possible time. Between Suitable sealing elements or materials are inserted into the duct parts Prevent liquid metal from flowing out during operation. The channel 7 can advantageously be heated via the inductors if after the conversion of the channel, this must be prepared for a new work cycle.

Claims (8)

  1. A device for coating strip-form material, in which a metal strip is conveyed through a container accommodating the molten coating material, which container comprises a channel enclosing the strip-form material below the surface of the molten bath, in which channel currents are induced in the coating material by inductors, which currents produce an electromagnetic force for retaining the coating material,
    characterised in that
    the channel (7) is attached in readily detachable manner to the bottom of the container (1) and consists of several parts (6a to 6d) which may be separated in the direction of displacement of the strip and are sealed relative to one another and which may be moved away from the strip (3) individually at right angles to the direction of displacement of the strip (3) when the parting connection is released for the purpose of replacing the channel (7) while a strip (3) is located therein.
  2. A device for coating strip-form material according to claim 1,
    characterised in that
    the channel (7) consists of an electrically insulating material with good surface wettability.
  3. A device for coating strip-form material according to claim 1 and claim 2,
    characterised in that
    the channel (7) is made of ceramic material.
  4. A device for coating strip-form material according to claims 1 to 3,
    characterised in that
    the channel parts (6a to 6d) are attached to the inductors (9a, 9b) and may be moved or displaced jointly therewith.
  5. A device for coating strip-form material according to claims 1 to 3,
    characterised in that
    the channel parts (6a to 6d) may be moved or displaced independently of the inductors (9a, 9b).
  6. A device for coating strip-form material according to claims 1 to 5,
    characterised in that
    the channel (7) may be closed in gas-tight manner and pressurised with protective gas.
  7. A device for coating strip-form material according to claim 1,
    characterised in that
    the channel (7) is held on the container bottom (4) by means of wedges (13) or cams.
  8. A device for coating strip-form material according to claims 1 to 7,
    characterised in that
    a roller arrangement (8a, 8b) is provided below the channel (7) for guiding and centring the strip (3).
EP97931704A 1996-07-05 1997-07-01 Device for hot-dip coating metal band Expired - Lifetime EP0910681B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19628512A DE19628512C1 (en) 1996-07-05 1996-07-05 Metal strip hot dip coating unit
DE19628512 1996-07-05
PCT/DE1997/001412 WO1998001595A1 (en) 1996-07-05 1997-07-01 Device for hot-dip coating metal band

Publications (2)

Publication Number Publication Date
EP0910681A1 EP0910681A1 (en) 1999-04-28
EP0910681B1 true EP0910681B1 (en) 2000-05-03

Family

ID=7799882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97931704A Expired - Lifetime EP0910681B1 (en) 1996-07-05 1997-07-01 Device for hot-dip coating metal band

Country Status (10)

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US (1) US6254680B1 (en)
EP (1) EP0910681B1 (en)
JP (1) JP3774235B2 (en)
KR (1) KR100498671B1 (en)
AT (1) ATE192509T1 (en)
AU (1) AU3538197A (en)
CA (1) CA2259409C (en)
DE (2) DE19628512C1 (en)
ES (1) ES2145615T3 (en)
WO (1) WO1998001595A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4843975B2 (en) * 2005-03-25 2011-12-21 Ｊｆｅスチール株式会社 Plating bath equipment
DE102005029576A1 (en) * 2005-06-25 2007-01-04 Sms Demag Ag Device for the hot dip coating of a metal strand
DE102005030766A1 (en) * 2005-07-01 2007-01-04 Sms Demag Ag Device for the hot dip coating of a metal strand

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1157743B (en) * 1955-08-24 1963-11-21 Gen Electric Process for the continuous production of semi-finished products
US3090352A (en) * 1960-09-26 1963-05-21 Armco Steel Corp Molten metal trap for coating apparatus
DE8616987U1 (en) * 1986-06-26 1987-10-22 Chamotte- und Tonwerk Kurt Hagenburger, 6718 Grünstadt Filling tube for casting metallic workpieces
DE4208578A1 (en) * 1992-03-13 1993-09-16 Mannesmann Ag METHOD FOR COATING THE SURFACE OF STRAND-SHAPED GOODS
DE4320723A1 (en) * 1993-06-23 1995-01-05 Didier Werke Ag Immersion spout
CA2131059C (en) * 1993-09-08 2001-10-30 William A. Carter Hot dip coating method and apparatus
DE4344939C1 (en) * 1993-12-23 1995-02-09 Mannesmann Ag Method for the control, suitable for the process, of an installation for coating strip-shaped material
IN191638B (en) * 1994-07-28 2003-12-06 Bhp Steel Jla Pty Ltd
WO1996038599A1 (en) * 1995-05-29 1996-12-05 M3D, Societe Anonyme Method and apparatus for coating a metal strip with a metal or alloy with a lower melting or liquidus point than the strip material
CA2225537C (en) * 1996-12-27 2001-05-15 Mitsubishi Heavy Industries, Ltd. Hot dip coating apparatus and method

Also Published As

Publication number Publication date
WO1998001595A1 (en) 1998-01-15
EP0910681A1 (en) 1999-04-28
CA2259409A1 (en) 1998-01-15
CA2259409C (en) 2006-09-05
ATE192509T1 (en) 2000-05-15
JP3774235B2 (en) 2006-05-10
DE59701594D1 (en) 2000-06-08
JP2000514141A (en) 2000-10-24
US6254680B1 (en) 2001-07-03
KR100498671B1 (en) 2005-07-01
ES2145615T3 (en) 2000-07-01
DE19628512C1 (en) 1997-09-04
AU3538197A (en) 1998-02-02
KR20000067851A (en) 2000-11-25

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