EP0255466A1 - Installation for single or both-sided zinc plating - Google Patents

Installation for single or both-sided zinc plating Download PDF

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Publication number
EP0255466A1
EP0255466A1 EP87730052A EP87730052A EP0255466A1 EP 0255466 A1 EP0255466 A1 EP 0255466A1 EP 87730052 A EP87730052 A EP 87730052A EP 87730052 A EP87730052 A EP 87730052A EP 0255466 A1 EP0255466 A1 EP 0255466A1
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EP
European Patent Office
Prior art keywords
housing
roller
sided
galvanizing
zinc bath
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87730052A
Other languages
German (de)
French (fr)
Other versions
EP0255466B1 (en
Inventor
Klaus Dr.-Ing. Fromann
Rolf Ing. Michel
Paul Ing. Fontaine
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Vodafone GmbH
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Mannesmann AG
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Publication date
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Publication of EP0255466A1 publication Critical patent/EP0255466A1/en
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    • 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
    • C23C2/0032—Apparatus specially adapted for batch coating of substrate
    • C23C2/00322—Details of mechanisms for immersing or removing substrate from molten liquid bath, e.g. basket or lifting mechanism
    • 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
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon
    • 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
    • C23C2/0034—Details related to elements immersed in bath
    • C23C2/00342—Moving elements, e.g. pumps or mixers
    • C23C2/00344—Means for moving substrates, e.g. immersed rollers or immersed bearings
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/14—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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/40—Plates; Strips

Definitions

  • the invention relates to a system for one-sided or two-sided galvanizing of continuously running steel strip, which leads through a duct connected to the furnace and is under a protective gas to a container filled with liquid zinc and there - for two-sided galvanizing - around a deflection roller arranged inside the zinc bath and, if necessary, stabilizing rollers are guided or - for one-sided galvanizing - is steered in the same direction as in the case of double-sided galvanizing by at least one deflecting roller arranged above the zinc bath level within a gas-tight flange-mounted housing on the duct, the deflecting roller being assigned a coating roller immersed in the zinc bath.
  • the object of the present invention is, based on the known state of the art, to provide a system for one- or two-sided galvanizing of continuously running steel strip, which, with a simple structural design, enables the system to be quickly switched from one method to the other, specifically with inlaid tape material.
  • the flange connection between the channel and the housing is easily detachable and that the housing can be exchanged for a support for the deflecting roller, the fastening of which corresponds to that of the housing in the case of two-sided galvanizing.
  • the background of the invention is therefore the replacement of complete “kits” for one-sided and two-sided galvanizing, each "kit” containing the parts required for the respective process steps completely prepared.
  • the attachment is provided via a housing part arranged on the carrier, which encloses the band on three sides and is open to the channel and to the zinc bath into which the lower region of the housing part is immersed.
  • the gas-tight required connection between the channel leading out of the furnace and the zinc bath is ensured on the one hand, and on the other hand it is ensured that it is possible to lift out the plant part provided for the double-sided galvanizing without cutting the strip.
  • a solution which provides that the housing is divided into two and the parting plane of the housing parts runs in the plane of the outgoing tape.
  • the deflection roller or rollers are advantageously mounted in one part of the housing and a nozzle knife in the other part of the housing to even out the coating thickness, in each case are removably arranged with the housing parts.
  • the coating roller is preferably pivotally mounted on a lever arm outside the housing. It is favorable if the lever arm has the bearing for a stabilizing roller for galvanizing on both sides, against which the coating roller for one-sided galvanizing can be exchanged.
  • the system can thus be simplified so that only the roles have to be changed; the rest of the mechanics remain on the system.
  • the flange of the flange connection with the channel is provided approximately perpendicular to the bath level and extends transversely to the strip and extends into the zinc bath. In this way, the gas-tight closure of the housing or the carrier is ensured on the one hand, with the flange-mounted The housing part located there remains open at the bottom in order to be lifted up without having to remove the band.
  • a tub W is shown in which there is liquid zinc.
  • the device for one-sided coating of the strip labeled B is shown, which consists of the housing 2a, 2b that dips into the zinc Z with its lower part and in which the deflection rollers 3a, 3b and the nozzle knife 4 are stored.
  • the coating roller 7, which is located at the free end of the lever 8, is pivoted from below onto the belt B in the region of the deflection roller 3b.
  • the lever 8 can be pivoted about the articulation point l2 into a position in which the coating roller is located, as indicated at 7a.
  • the housing 2a, 2b be consists of two flanged parts, namely 2a and 2b, where at the parting line of the housing parts 2a, 2b is in the plane of the outgoing band B, which is designated by l.
  • the housing 2a On the left in the drawing plane, the housing 2a is connected to the channel 5 with a corresponding flange connection at 6.
  • the flange 6 runs perpendicular to the surface of the zinc Z and extends into the zinc bath.
  • the flange connection at 6 is gas-tight, like the entire housing 2a, 2b, which is sealed at the bottom by the zinc bath.
  • the housing 2a, 2b is removed after loosening the flange connection 6 and separating the housing parts 2a and 2b together with the deflection rollers 3a, 3b and the nozzle knife 4 stored therein and by a Carrier ll replaced, on which the stabilizing roller l3, the deflection roller l0 and a housing part 5b are attached.
  • the coating roller 7 on the arm 8 is replaced by the stabilizing roller 9 and brought to the belt by pivoting the arm 8 about the pivot point l2 into the corresponding required position.
  • the housing part 5b located on the carrier 11 represents an extension of the channel 5, which leads from the furnace into the zinc Z.
  • the position of the flange connection perpendicular to the zinc bath and the fact that the lower channel boundary extends into the liquid zinc results in a shape of the housing 5b, which encloses the band on three sides and makes the enclosed space gas-tight on the one hand with respect to the liquid zinc Z and by flanging at 6 opposite to channel 5.
  • the flange connection 6 is identical to the connection to the housing 2a, 2b, so that both parts can be exchanged in a modular manner.
  • the design of the two parts of the system is chosen so that the strip B can remain in the system when changing from one-sided to two-sided galvanizing.
  • the invention enables a quick change from one method to the other, the effort of the system parts used being kept low and by changing complete "kits" a maintenance and repair of the system part not required in each case can be carried out outside the line in order to re-use the prepared parts as quickly as possible.

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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)

Abstract

Die Erfindung betrifft eine Anlage zum ein- und zweiseitigen Verzinken von durchlaufendem Stahlband. Um die Wechselzeiten beim Umstellen von einem Verfahren auf das andere gering zu halten, schlägt die Erfindung vor, ein Gehäuse (2a, 2b) mit darin gelagerten Umlenkrollen (3a, 3b) an den vom Ofen zum Zinkbad führenden Kanal (5) leicht lösbar anzuflanschen und dieses Gehäuse gegen einen Träger für die Umlenkrolle (l0) bei beidseitiger Verzinkung unter Verwendung der Befestigung am Kanal (5) austauschbar zu gestalten.The invention relates to a system for one and two-sided galvanizing of continuous steel strip. In order to keep the changeover times short when changing over from one process to the other, the invention proposes to easily detachably flange a housing (2a, 2b) with deflection rollers (3a, 3b) mounted therein to the channel (5) leading from the furnace to the zinc bath and to make this housing interchangeable with a support for the deflection roller (l0) with galvanization on both sides using the attachment to the channel (5).

Description

Die Erfindung betrifft eine Anlage zum ein- oder zweiseitigen Ver­zinken von kontinuierlich durchlaufendem Stahlband, das durch einen an den Ofen angeschlossenen, unter Schutzgas stehenden Kanal zu einem mit flüssigem Zink gefüllten Bëhälter geführt und dort - zur zwei­seitigen Verzinkung - um eine innerhalb des Zinkbades angeordnete Umlenkrolle und gegebenenfalls Stabilisierungsrollen geführt wird bzw. - zur einseitigen Verzinkung - um mindestens eine oberhalb des Zinkbadspiegels innerhalb eines an den Kanal gasdicht angeflanschten Gehäuses angeordnete Umlenkrolle in die gleiche Richtung wie bei zweiseitiger Verzinkung gelenkt wird, wobei derUmlenkrolle eine in das Zinkbad eintauchende Beschichtungsrollezugeordnet ist.The invention relates to a system for one-sided or two-sided galvanizing of continuously running steel strip, which leads through a duct connected to the furnace and is under a protective gas to a container filled with liquid zinc and there - for two-sided galvanizing - around a deflection roller arranged inside the zinc bath and, if necessary, stabilizing rollers are guided or - for one-sided galvanizing - is steered in the same direction as in the case of double-sided galvanizing by at least one deflecting roller arranged above the zinc bath level within a gas-tight flange-mounted housing on the duct, the deflecting roller being assigned a coating roller immersed in the zinc bath.

Die in den letzten Jahren ständig gestiegenen Nachfragen nach ein­seitig verzinktem Stahlband, insbesondere zur Verarbeitung als Kar­rosserieblech hat dazu geführt, daß verstärkt Anlagen benötigt wer­den, mit denen solches Band hergestellt werden kann. Da jedoch nach wie vor ein erheblicher Bedarf an beidseitig verzinktem Stahlband besteht, sollen moderne Beschichtungsanlagen in der Lage sein, beide Arten von beschichtetem Band herzustellen, wobei die Umrüstung von einseitigem auf zweiseitiges Beschichten möglichst schnell und mit geringem Aufwand erfolgen soll.The constantly increasing demand in the last few years for one-sided galvanized steel strip, in particular for processing as a body sheet, has led to an increasing need for systems with which such strip can be produced. However, since there is still a considerable need for steel strips that are galvanized on both sides, modern coating systems should be able to produce both types of coated strips, whereby the changeover from one-sided to two-sided coating should be carried out as quickly as possible and with little effort.

Es ist eine Anlage zum ein- bzw. zweiseitigen Beschichten vorgeschla­gen worden (DE-OS 33 l3 2l8), wie sie vorstehend beschrieben ist. Mit dieser Anlage ist in günstiger Weise ein sowohl einseitiges als auch zweiseitiges Beschichten möglich, doch erfordert die Umstellung von dem einen auf das andere Verfahren eine Reihe von Umbaumaßnahmen an der Anlage, die recht aufwendig an Arbeit und Zeit sind. Da während dieser Zeit keine Behandlung des Bandes stattfinden kann, ist mit einem erhblichen Produktionsausfall zu rechnen.A system for one- or two-sided coating has been proposed (DE-OS 33 l3 2l8), as described above. With this system, one-sided and two-sided coating is possible in a favorable manner, but the changeover from one method to the other requires a series of conversion measures on the system, which are quite complex in terms of work and time. Since no treatment of the belt can take place during this time, a considerable loss of production can be expected.

Es ist auch bereits vorgeschlagen worden (Europäische Patentanmeldung 00 64 922) eine Anlage zum ein- und zweiseitigen Verzinken so zu ge­stalten, daß durch Verfahren und Verschwenken verschiedenster Anla­genteile beide Verfahrensschritte mit der gleichen Anlage vorgenommen werden können. Diese Anlage hat jedoch den Nachteil der sehr aufwen­digen Mechanik und Kinematik, die, im Fall von Störungen, noch grö­ßere Totzeiten der Anlagen und Produktionsausfälle erwarten läßt. Dies trifft auch dann zu, wenn Anlagenteile gewartet, ersetzt oder gereinigt werden müssen.It has also already been proposed (European patent application 00 64 922) to design a system for one- and two-sided galvanizing in such a way that both process steps can be carried out with the same system by moving and pivoting the most varied parts of the system. However, this system has the disadvantage of very complex mechanics and kinematics, which, in the event of malfunctions, can be expected to result in even longer system downtimes and production downtimes. This also applies if system parts need to be serviced, replaced or cleaned.

Aufgabe der vorliegenden Erfindung ist es, ausgehend von dem bekann­ten Stand der Technik, eine Anlage zum ein- oder zweiseitigen Ver­zinken von kontinuierlich durchlaufendem Stahlband zu schaffen, die bei einfachem konstruktivem Aufbau ein schnelles Umstellen der Anlage von einem auf das andere Verfahren ermöglicht und zwar bei eingeleg­tem Bandmaterial.The object of the present invention is, based on the known state of the art, to provide a system for one- or two-sided galvanizing of continuously running steel strip, which, with a simple structural design, enables the system to be quickly switched from one method to the other, specifically with inlaid tape material.

Zur Lösung der Aufgabe wird erfindungsgemäß vorgeschlagen, daß die Flanschverbindung zwischen Kanal und Gehäuse leicht lösbar ist und das Gehäuse bei zweiseitiger Verzinkung gegen einen Träger für die Umlenkrolle austauschbar ist, dessen Befestigung der des Gehäuses entspricht.To achieve the object, it is proposed according to the invention that the flange connection between the channel and the housing is easily detachable and that the housing can be exchanged for a support for the deflecting roller, the fastening of which corresponds to that of the housing in the case of two-sided galvanizing.

Hintergrund der Erfindung ist somit das Auswechseln von kompletten "Bausätzen" für einseitige und zweiseitige Verzinkung, wobei jeder "Bausatz" die für die jeweiligen Verfahrensschritte notwendigen Teile komplett vorbereitet enthält.The background of the invention is therefore the replacement of complete "kits" for one-sided and two-sided galvanizing, each "kit" containing the parts required for the respective process steps completely prepared.

Nach einem weiteren günstigen Merkmal der Erfindung ist vorgesehen, daß die Befestigung über ein an dem Träger angeordnetes Gehäuseteil vorgesehen ist, das das Band von drei Seiten umschließt und zum Kanal sowie zum Zinkbad, in das der untere Bereich des Gehäuseteils ein­taucht, offen ist. Auf diese Weise wird einerseits die gasdichte er­forderliche Verbindung zwischen dem aus dem Ofen führenden Kanal und dem Zinkbad gewährleistet und andererseits sichergestellt, daß ein Ausheben des für die zweiseitige Verzinkung vorgesehenen Anlagentei­les möglich ist, ohne das Band zu zertrennen. Dem gleichen Zweck dient nach einem weiteren Merkmal der Erfindung eine Lösung, die vorsieht, daß das Gehäuse zweigeteilt ist und die Trennebene der Ge­häuseteile in der Ebene des auslaufenden Bandes verläuft. Durch Trennen beider Gehäuseteile können diese leicht von beiden Seitendes Bandes entfernt werden, wobei nach einem weiteren Merkmal der Erfin­dung günstigerweise in dem einen Teil des Gehäuses die Umlenkrolle bzw. Rollen gelagert sind und in dem anderen Teil des Gehäuses ein Düsenmesser zur Vergleichmäßigung der Beschichtungsdicke, jeweils mit den Gehäuseteilen entfernbar angeordnet sind.According to a further advantageous feature of the invention it is provided that the attachment is provided via a housing part arranged on the carrier, which encloses the band on three sides and is open to the channel and to the zinc bath into which the lower region of the housing part is immersed. In this way, the gas-tight required connection between the channel leading out of the furnace and the zinc bath is ensured on the one hand, and on the other hand it is ensured that it is possible to lift out the plant part provided for the double-sided galvanizing without cutting the strip. The same purpose is used according to a further feature of the invention, a solution which provides that the housing is divided into two and the parting plane of the housing parts runs in the plane of the outgoing tape. By separating the two housing parts, these can be easily removed from both sides of the belt, whereby according to a further feature of the invention the deflection roller or rollers are advantageously mounted in one part of the housing and a nozzle knife in the other part of the housing to even out the coating thickness, in each case are removably arranged with the housing parts.

Vorzugsweise ist die Beschichtungsrolle außerhalb des Gehäuses an einem Hebelarm schwenkbar gelagert. Es ist günstig, wenn der Hebelarm das Lager für eine Stabilisierungsrolle beim beidseitigen Verzinken aufweist, gegen die die Beschichtungsrolle für einseitiges Verzinken austauschbar ist. Damit läßt sich die Anlage vereinfachen, so daß lediglich die Rollen gewechselt werden müssen; die übrige Mechanik verbleibt an der Anlage.The coating roller is preferably pivotally mounted on a lever arm outside the housing. It is favorable if the lever arm has the bearing for a stabilizing roller for galvanizing on both sides, against which the coating roller for one-sided galvanizing can be exchanged. The system can thus be simplified so that only the roles have to be changed; the rest of the mechanics remain on the system.

Nach einem besonders günstigen Merkmal ist der Flansch der Flansch­verbindung mit dem Kanal etwa senkrecht zur Badspiegelebene und quer zum Band verlaufend vorgesehen und reicht bis in das Zinkbad hinein. Auf diese Weise wird einerseits der gasdichte Abschluß jeweils des Gehäuses oder des Trägers gewährleistet, wobei bei angeflanschtem Träger das dort angeordnete Gehäusetëil nach unten offen verbleibt, um nach oben herausgehoben zu werden, ohne das Band entfernen zu müssen.According to a particularly favorable feature, the flange of the flange connection with the channel is provided approximately perpendicular to the bath level and extends transversely to the strip and extends into the zinc bath. In this way, the gas-tight closure of the housing or the carrier is ensured on the one hand, with the flange-mounted The housing part located there remains open at the bottom in order to be lifted up without having to remove the band.

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

  • Fig. l einen Querschnitt durch die erfindungsgemäße Anlage bei einseitiger Verzinkung und
  • Fig. 2 einen Querschnitt durch die Anlage bei beidseitiger Ver­zinkung.
An embodiment of the invention is shown in the drawing and is described below. It shows:
  • Fig. L shows a cross section through the system according to the invention with one-sided galvanizing and
  • Fig. 2 shows a cross section through the system with galvanizing on both sides.

In Fig. l ist eine Wanne W dargestellt, in der sich flüssiges Zink befindet. Oberhalb der Wanne W und des Zinkbades ist die Einrichtung zur einseitigen Beschichtung des mit B bezeichneten Bandes darge­stellt, die aus dem Gehäuse 2a, 2b besteht, daß mit seinem unteren Teil in das Zink Z eintaucht und in dem die Umlenkrollen 3a, 3b sowie das Düsenmesser 4 gelagert sind. Von unten an das Band B im Bereich der Umlenkrolle 3b ist die Beschichtungsrolle 7 herangeschwenkt, die sich am freien Ende des Hebels 8 befindet. Der Hebel 8 ist um den Gelenkpunkt l2 in eine Lage schwenkbar, in der sich die Beschich­tungsrolle, wie bei 7a angedeutet, befindet. Das Gehäuse 2a, 2b be steht aus zwei aneinandergeflanschten Teilen, nämlich 2a und 2b, wo bei die Trennfuge der Gehäuseteile 2a, 2b sich in der Ebene des aus­laufenden Bandes B befindet, die mit l bezeichnet ist. Auf der in der Zeichnungsebene linken Seite ist das Gehäuse 2a mit einer entspre­chenden Flanschverbindung bei 6 an den kanal 5 angeschlossen. Der Flansch 6 verläuft senkrecht zur Oberfläche des Zinks Z und reicht bis in das Zinkbad hinein. Die Flanschverbindung bei 6 ist gasdicht, wie das gesamte Gehäuse 2a, 2b, welches nach unten durch das Zinkbad abgedichtet wird.In Fig. 1, a tub W is shown in which there is liquid zinc. Above the tub W and the zinc bath, the device for one-sided coating of the strip labeled B is shown, which consists of the housing 2a, 2b that dips into the zinc Z with its lower part and in which the deflection rollers 3a, 3b and the nozzle knife 4 are stored. The coating roller 7, which is located at the free end of the lever 8, is pivoted from below onto the belt B in the region of the deflection roller 3b. The lever 8 can be pivoted about the articulation point l2 into a position in which the coating roller is located, as indicated at 7a. The housing 2a, 2b be consists of two flanged parts, namely 2a and 2b, where at the parting line of the housing parts 2a, 2b is in the plane of the outgoing band B, which is designated by l. On the left in the drawing plane, the housing 2a is connected to the channel 5 with a corresponding flange connection at 6. The flange 6 runs perpendicular to the surface of the zinc Z and extends into the zinc bath. The flange connection at 6 is gas-tight, like the entire housing 2a, 2b, which is sealed at the bottom by the zinc bath.

Soll die Anlage zur zweiseitigen Verzinkung von durchlaufendem Band B verwendet werden, so wird das Gehäuse 2a, 2b nach Lösen der Flanschverbindung 6 und Trennen der Gehäuseteile 2a und 2b zusammen mit den in ihnen gelagerten Umlenkrollen 3a, 3b und dem Düsenmesser 4 entfernt und durch einen Träger ll ersetzt, an dem die Stabilisie­rungsrolle l3, die Umlenkrolle l0 und ein Gehäuseteil 5b befestigt sind. Die Beschichtungsrolle 7 an dem Arm 8 wird durch die Stabili­sierungsrolle 9 ersetzt und durch Verschwenken des Armes 8 um den Schwenkpunkt l2 in die entsprechende erforderliche Lage zum Band ge­bracht.If the system is to be used for double-sided galvanizing of continuous strip B, the housing 2a, 2b is removed after loosening the flange connection 6 and separating the housing parts 2a and 2b together with the deflection rollers 3a, 3b and the nozzle knife 4 stored therein and by a Carrier ll replaced, on which the stabilizing roller l3, the deflection roller l0 and a housing part 5b are attached. The coating roller 7 on the arm 8 is replaced by the stabilizing roller 9 and brought to the belt by pivoting the arm 8 about the pivot point l2 into the corresponding required position.

Das am Träger ll befindliche Gehäuseteil 5b stellt eine Verlängerung des Kanals 5 dar, der vom Ofen in das Zink Z führt. Durch die Lage der Flanschverbindung senkrecht zum Zinkbad und das Hineinreichen der unteren Kanalbegrenzung in das flüssige Zink hinein ergibt sich eine Form des Gehäuses 5b, die das Band von drei Seiten umschließt und den umschlossenen Raum gasdicht einerseits gegenüber dem flüssigen Zink Z und durch Anflanschen bei 6 gegenüber dem Kanal 5 abschließt. Die Flanschverbindung 6 ist identisch zur Verbindung mit dem Gehäuse 2a, 2b, so daß beide Teile baukastenartig gegeneinander ausgewechselt werden können. Die Konzeption der beiden Anlagenteile ist so gewählt, daß das Band B in der Anlage verbleiben kann, wenn von einseitiger auf zweiseitige Verzinkung gewechselt wird.The housing part 5b located on the carrier 11 represents an extension of the channel 5, which leads from the furnace into the zinc Z. The position of the flange connection perpendicular to the zinc bath and the fact that the lower channel boundary extends into the liquid zinc results in a shape of the housing 5b, which encloses the band on three sides and makes the enclosed space gas-tight on the one hand with respect to the liquid zinc Z and by flanging at 6 opposite to channel 5. The flange connection 6 is identical to the connection to the housing 2a, 2b, so that both parts can be exchanged in a modular manner. The design of the two parts of the system is chosen so that the strip B can remain in the system when changing from one-sided to two-sided galvanizing.

Die Erfindung ermöglicht ein rasches Wechseln von einem Verfahren auf das andere, wobei der Aufwand der verwendeten Anlagenteile gering gehalten ist und durch Wechseln kompletter "Bausätze" in günstiger Weise ein Warten und Reparieren des jeweils nicht benötigten Anla­genteiles außerhalb der Linie vorgenommen werden kann, um die ent­sprechend vorbereiteten Teile in kürzester Zeit erneut einzusetzen.The invention enables a quick change from one method to the other, the effort of the system parts used being kept low and by changing complete "kits" a maintenance and repair of the system part not required in each case can be carried out outside the line in order to re-use the prepared parts as quickly as possible.

Claims (7)

1. Anlage zum ein- der beidseitigen Verzinken von kontinuierlich durchlaufendem Stahlband, das durch einen an den Ofen ange­schlossenen unter Schutzgas stehenden Kanal zu einem mit flüs­sigem Zink gefüllten Behälter geführt und dort - zurzweiseitigen Verzinkung - um eine innerhalb des Zinkbades angeordnete Umlenk­rolle und gegebenenfalls Stabilisierungsrollen geführt wird bzw. - zur einseitigen Verzinkung - um mindestens eine oberhalb des Zinkbadspiegels innerhalb einesan den Kanal gasdicht ange­flanschten Gehäuses angeordnete Umlenkrolle in die gleiche Richtung wie bei zweiseitiger Verzinkung gelenkt wird, wobei der Umlenkrolle eine in das Zinkbad eintauchende Beschichtungsrolle zugeordnet ist,
dadurch gekennzeichnet,
daß die Flanschverbindung (6) zwischen Kanal (5a) und Gehäuse (2a) leicht lösbar ist und das Gehäuse (2a) bei zweiseitiger Verzinkung gegen einen Träger (ll) für die Umlenkrolle (l0) aus­tauschbar ist, dessen Befestigung (Flanschverbindung 6) der des Gehäuses (2a) entspricht.1.System for one-sided galvanizing of continuously running steel strip, which is led through a duct connected to the furnace under a protective gas to a container filled with liquid zinc and there - for two-sided galvanizing - guided around a deflection roller arranged in the zinc bath and, if necessary, stabilizing rollers is or - for one-sided galvanizing - is steered in the same direction as for double-sided galvanizing by at least one deflecting roller arranged above the zinc bath level within a housing flanged gas-tight to the duct, the deflecting roller being assigned a coating roller immersed in the zinc bath,
characterized,
that the flange connection (6) between the channel (5a) and the housing (2a) is easily detachable and the housing (2a) with two-sided galvanizing can be exchanged for a support (ll) for the guide roller (l0), the fastening (flange connection 6) of which of the housing (2a) corresponds. 2. Anlage nach Anspruch l,
dadurch gekennzeichnet,
daß die Befestigung (6) über ein an dem Träger (ll) angeordnetes Gehäuseteil (5b) vorgesehen ist, das das Band (B) von drei Sei­ten umschließt und zum Kanal (5) sowie zum Zinkbad (Z), in das der untere Bereich des Gehäuseteils (5b) eintaucht, offen ist.2. Installation according to claim 1,
characterized,
that the attachment (6) is provided via a housing part (5b) arranged on the support (II), which encloses the band (B) from three sides and to the channel (5) and to the zinc bath (Z), into which the lower region of the housing part (5b) dips, is open. 3. Anlage nach Anspruch l,
dadurch gekennzeichnet,
daß das Gehäuse zweigeteilt (2a, 2b) ist und die Trennebene (l) der Gehäuseteile (2a, 2b) in der Ebene des auslaufenden Bandes (B) verläuft.3. Installation according to claim 1,
characterized,
that the housing is divided into two (2a, 2b) and the parting plane (l) of the housing parts (2a, 2b) runs in the plane of the outgoing band (B). 4. Anlage nach Anspruch 3,
dadurch gekennzeichnet,
daß in dem einen Teil des Gehäuses (2a) die Umlenkrolle bzw. -rollen (3a, 3b) gelagert und in dem anderen Teil des Gehäuses (2b) ein Düsenmesser (4) zur Vergleichmäßigung der Beschich­tungsdicke, jeweils mit den Gehäuseteilen (2a, 2b) entfernbar angeordnet sind.4. Plant according to claim 3,
characterized,
that in one part of the housing (2a) the deflection roller or rollers (3a, 3b) is mounted and in the other part of the housing (2b) a nozzle knife (4) to even out the coating thickness, each with the housing parts (2a, 2b ) are removably arranged. 5. Anlage nach Anspruch l,
dadurch gekennzeichnet,
daß die Beschichtungsrolle (7) außerhalb des Gehäuses (2a, 2b) an einem Hebelarm (8) schwenkbar gelagert ist.5. Plant according to claim 1,
characterized,
that the coating roller (7) outside of the housing (2a, 2b) is pivotally mounted on a lever arm (8). 6. Anlage nach Anspruch 5,
dadurch gekennzeichnet,
daß der Hebelarm (8) das Lager für eine Stabilisierungsrolle (9) beim beidseitigen Verzinken aufweist, gegen die die Beschich­tungsrolle (7) für einseitiges Verzinken austauschbar ist.6. Plant according to claim 5,
characterized,
that the lever arm (8) has the bearing for a stabilizing roller (9) when galvanizing on both sides, against which the coating roller (7) is exchangeable for one-sided galvanizing. 7. Anlage nach Anspruch l und 2,
dadurch gekennzeichnet,
daß der Flansch der Flanschverbindung (6) mit dem Kanal (5) et­wa senkrecht zur Badspiegelebene und quer zum Band (B)verläuft und in das Zinkbad (Z) hineinreicht.7. Plant according to claim l and 2,
characterized,
that the flange of the flange connection (6) with the channel (5) extends approximately perpendicular to the bath level and transversely to the band (B) and extends into the zinc bath (Z).
EP87730052A 1986-07-30 1987-05-08 Installation for single or both-sided zinc plating Expired - Lifetime EP0255466B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3625680A DE3625680C1 (en) 1986-07-30 1986-07-30 System for one-sided or double-sided galvanizing
DE3625680 1986-07-30

Publications (2)

Publication Number Publication Date
EP0255466A1 true EP0255466A1 (en) 1988-02-03
EP0255466B1 EP0255466B1 (en) 1991-03-06

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ID=6306249

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Application Number Title Priority Date Filing Date
EP87730052A Expired - Lifetime EP0255466B1 (en) 1986-07-30 1987-05-08 Installation for single or both-sided zinc plating

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US (1) US4884525A (en)
EP (1) EP0255466B1 (en)
JP (1) JPH01501321A (en)
KR (1) KR880701787A (en)
DE (2) DE3625680C1 (en)
FI (1) FI83337C (en)
SU (1) SU1627089A3 (en)
WO (1) WO1988000983A1 (en)

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BRPI0822961A2 (en) * 2008-07-21 2018-05-29 Siemens Vai Metals Tech Sas device for installing a bottom cylinder in a continuous-pass galvanizing steel belt bath
US8342118B2 (en) * 2009-06-01 2013-01-01 Processing Technologies, Llc Sheet coating system on an apparatus for extrusion forming a sheet product

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EP0064922A1 (en) * 1981-05-07 1982-11-17 Stein Heurtey Apparatus for galvanizing metallic strips
EP0072874A1 (en) * 1981-08-25 1983-03-02 Nippon Steel Corporation Dual-purpose plant for producing cold rolled steel sheet and hot-dip galvanized steel sheet

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EP0072874A1 (en) * 1981-08-25 1983-03-02 Nippon Steel Corporation Dual-purpose plant for producing cold rolled steel sheet and hot-dip galvanized steel sheet

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Also Published As

Publication number Publication date
KR880701787A (en) 1988-11-05
DE3625680C1 (en) 1987-04-16
US4884525A (en) 1989-12-05
SU1627089A3 (en) 1991-02-07
FI83337B (en) 1991-03-15
FI881482A (en) 1988-03-29
FI83337C (en) 1991-06-25
DE3768364D1 (en) 1991-04-11
EP0255466B1 (en) 1991-03-06
JPH01501321A (en) 1989-05-11
FI881482A0 (en) 1988-03-29
WO1988000983A1 (en) 1988-02-11

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