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EP0039453B1 - Apparatus for electroplating - Google Patents

Apparatus for electroplating Download PDF

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Publication number
EP0039453B1
EP0039453B1 EP81103085A EP81103085A EP0039453B1 EP 0039453 B1 EP0039453 B1 EP 0039453B1 EP 81103085 A EP81103085 A EP 81103085A EP 81103085 A EP81103085 A EP 81103085A EP 0039453 B1 EP0039453 B1 EP 0039453B1
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EP
European Patent Office
Prior art keywords
strip
electrode
electrodes
electrolyte
electroplating
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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
Application number
EP81103085A
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German (de)
French (fr)
Other versions
EP0039453A1 (en
Inventor
Manfred Dipl.-Ing. Espenhahn
Manfred Dipl.-Ing. Folwaczny
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Thyssen AG
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Thyssen AG
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Publication date
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Publication of EP0039453A1 publication Critical patent/EP0039453A1/en
Application granted granted Critical
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/06—Wires; Strips; Foils
    • C25D7/0614—Strips or foils
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/06—Wires; Strips; Foils
    • C25D7/0614—Strips or foils
    • C25D7/0642—Anodes

Definitions

  • the invention relates to a device for electroplating metal strips, in particular for galvanizing steel strips, with a tank filled with electrolyte liquid, in particular through which there is a flow, and at least one electrode immersed therein, above and below the strip and arranged parallel to it.
  • the invention has for its object to provide a device for electroplating, which is simple in construction and which allows a one-sided or double-sided coating of the strip without time-consuming conversion.
  • the electrode arranged above the belt is made of the metal to be deposited, e.g. Zinc
  • the electrode arranged below the strip consists of a material that is insoluble in the electrolyte and can be switched off from the power source for the purpose of one-sided electroplating.
  • the ions necessary for the coating are made available by the electrode which is used up and arranged above the strip, in both the one-sided and the two-sided coating.
  • the elaborate preparation of the electrolyte in a separate system and the pumping-around which requires additional energy are eliminated in the device according to the invention. Since the electrode, which is difficult to access and is located below the metal strip, consists of a material that is not soluble in the electrolyte, its distance from the strip remains constant, so that a uniform coating is ensured.
  • the power supply provided for the lower electrode can additionally supply the upper electrode with current.
  • the coating process can then be carried out more quickly because of the double current strengths.
  • the distance between the upper and / or lower electrode can be adjustable.
  • the adjustability of the upper electrode that consumes during operation is of particular importance. If the upper electrode is kept at a constant distance, the voltage once set can be maintained. Special devices for voltage regulation are not required. Since only the upper electrode is worn out but is easily accessible, the time required for the replacement is comparatively short.
  • a slight encroachment of the electrical field around the strip edges and the associated slight coating of the strip side facing away from the electrode can be avoided by providing shielding masks running parallel to the strip edges, to which a voltage can optionally be applied to build up a protective field.
  • a plurality of upper and lower electrodes can be arranged one behind the other in a tank.
  • a plurality of devices for electroplating are arranged one behind the other above a collecting trough 9 for electrolyte liquid 10.
  • Each device consists of a current roller 1, via which a band 7 to be coated can be supplied with current, and a pressure roller 2 arranged below the current roller 1, a tank 8 filled with electrolytes 6, on the front and rear edge of which sealing rollers 3 are provided, between which the band 7 enters the tank 8 and exits the tank 8.
  • each tank 8 there are two electrodes 5 made of material insoluble in the electrolyte, e.g. Titanium, carbon or lead-coated copper plates, and above the band 7 and parallel to this electrodes 4 made of soluble material, e.g. Zinc, arranged.
  • the other connection terminal of the current source is applied to the electrodes 4, 5, the electrodes 5 optionally being able to be switched off.
  • the upper and lower electrodes 4, 5 consist of several segments, particularly in the edge areas.
  • the segments of the upper electrode 4 can be moved apart, while the segments of the lower electrode 5 are separated from one another by insulating strips 11.
  • the segments of the electrodes 4, 5 can optionally be connected to the power source.
  • masks 12 are provided in the edge area which can be moved horizontally and perpendicularly to the edges.
  • the electrolyte can be pumped into the gap or gap between the active electrodes 4 and 5 or 4 and the strip 7 to be coated by means of circulation pumps and nozzles, not shown, so that there is a uniform ion concentration here.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Elektroplattieren von Metallbändern, insbesondere zum Verzinken von Stahlband, mit einem mit Elektrolytflüssigkeit gefüllten, insbesondere durchströmten Tank und mindestens einer darin eingetauchten, oberhalb und einer unterhalb des Bandes und parallel dazu angeordneten Elektrode.The invention relates to a device for electroplating metal strips, in particular for galvanizing steel strips, with a tank filled with electrolyte liquid, in particular through which there is a flow, and at least one electrode immersed therein, above and below the strip and arranged parallel to it.

Bei einer bekannten Anlage dieser Art (DE-PS 689 548) ist bei einer gewünschten einseitigen Beschichtung des Bandes nur auf dieser Seite des Bandes eine Elektrode aus dem Niederschlagsmetall vorgesehen, während bei einer zweiseitigen Beschichtung des Bandes jeweils eine Elektrode aus dem Niederschlagsmetall auf beiden Seiten des Bandes angeordnet ist. Während des Elektroplattierens verbraucht sich das Niederschlagsmetall der Elektroden, so dass infolge des sich dadurch ändernden Abstandes zwischen der zu beschichtenden Bandseite und der Elektrode das elektrische Feld sich ändert. Eine über die gesamten Bandlänge gleichmässige Elektroplattierung kann deshalb nicht gewährleistet werden. Um eine einigermassen gleichmässige Elektroplattierung zu erhalten, müssten bei dieser Anlage die Elektroden in regelmässigen Intervallen erneuert werden. Dieses Erneuern, insbesondere der unterhalb des Bandes angeordneten Elektrode, ist schwierig und zeitraubend und macht einen Betriebsstillstand der Vorrichtung unumgänglich.In a known system of this type (DE-PS 689 548), if a desired one-sided coating of the band is provided, an electrode made of the precipitation metal is provided only on this side of the band, while in the case of a two-sided coating of the band, an electrode made of the precipitation metal is provided on both sides of the tape is arranged. During the electroplating, the precipitation metal of the electrodes is used up, so that the electrical field changes as a result of the changing distance between the strip side to be coated and the electrode. A uniform electroplating over the entire length of the strip cannot therefore be guaranteed. In order to obtain a reasonably uniform electroplating, the electrodes in this system would have to be replaced at regular intervals. This renewal, in particular of the electrode arranged below the belt, is difficult and time-consuming and makes the device inoperable inevitably.

Solche Schwierigkeiten traten bei einer älteren-Vorrichtung, auf die man jüngst wieder zurückgekommen ist, nicht auf (DE-PS 250 043; Stahl und Eisen 92 (1972) Nr. 18, Seite 833). Bei dieser Vorrichtung besteht die Anode aus einem unlöslichen Metall, so dass der einmal eingestellte Abstand auch mit fortschreitender Betriebsdauer erhalten bleibt. Um ein Absinken des für das Elektroplattieren notwendigen lonentransportes im Elektrolyten zu vermeiden, ist es aber erforderlich, dass die Elektrolytflüssigkeit in gesonderten, zusätzlichen Anlagen derart aufbereitet wird, dass sie Ionen des abzuscheidenden Metalls in ausreichender Konzentration enthält. Der Elektrolyt muss also bei dieser Anlage in ständigem Kreislauf zwischen der Beschichtungsvorrichtung und der Aufbereitungsanlage umgepumpt werden.Such difficulties did not arise with an older device to which one has recently come back (DE-PS 250 043; Stahl und Eisen 92 (1972) No. 18, page 833). In this device, the anode consists of an insoluble metal, so that the distance that has been set is retained even as the operating time progresses. In order to avoid a decrease in the ion transport in the electrolyte required for electroplating, it is necessary that the electrolyte liquid is processed in separate, additional systems in such a way that it contains ions of the metal to be deposited in sufficient concentration. In this system, the electrolyte must therefore be pumped in a constant cycle between the coating device and the processing system.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Elektroplattieren zu schaffen, die einfach im Aufbau ist und die ohne zeitraubenden Umbau wahlweise eine einseitige oder beidseitige Beschichtung des Bandes ermöglicht.The invention has for its object to provide a device for electroplating, which is simple in construction and which allows a one-sided or double-sided coating of the strip without time-consuming conversion.

Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass die oberhalb des Bandes angeordnete Elektrode aus dem abzuscheidenden Metall, z.B. Zink, besteht und die unterhalb des Bandes angeordnete Elektrode aus einem im Elektrolyten unlöslichen Material besteht und zum Zwecke einer einseitigen Elektroplattierung von der Stromquelle abschaltbar ist.This object is achieved according to the invention in that the electrode arranged above the belt is made of the metal to be deposited, e.g. Zinc, and the electrode arranged below the strip consists of a material that is insoluble in the electrolyte and can be switched off from the power source for the purpose of one-sided electroplating.

Bei der erfindungsgemässen Vorrichtung werden die für die Beschichtung notwendigen Ionen von der sich verbrauchenden, oberhalb des Bandes angeordneten Elektrode zur Verfügung gestellt, und zwar sowohl beim einseitigen als auch beim zweiseitigen Beschichten. Das aufwendige Aufbereiten des Elektrolyten in einer separaten Anlage und das zusätzliche Energie erfordernde Umpumpen fällt bei der erfindungsgemässen Vorrichtung weg. Da die schwer zugängliche, unterhalb des Metallbandes angeordnete Elektrode aus einem im Elektrolyten nicht löslichen Material besteht, bleibt ihr Abstand zum Band konstant, so dass eine gleichmässige Beschichtung gewährleistet wird.In the device according to the invention, the ions necessary for the coating are made available by the electrode which is used up and arranged above the strip, in both the one-sided and the two-sided coating. The elaborate preparation of the electrolyte in a separate system and the pumping-around which requires additional energy are eliminated in the device according to the invention. Since the electrode, which is difficult to access and is located below the metal strip, consists of a material that is not soluble in the electrolyte, its distance from the strip remains constant, so that a uniform coating is ensured.

Ein zusätzlicher Vorteil ergibt sich bei der erfindungsgemässen Vorrichtung beim einseitigen Elektroplattieren dann, wenn die untere Elektrode von der Stromquelle abgeschaltet ist. In diesem Fall kann die für die untere Elektrode vorgesehene Stromversorgung zusätzlich die obere Elektrode mit Strom versorgen. Wegen der doppelten Stromstärken kann dann der Beschichtungsvorgang schneller durchgeführt werden.An additional advantage arises in the device according to the invention in one-sided electroplating when the lower electrode is switched off from the power source. In this case, the power supply provided for the lower electrode can additionally supply the upper electrode with current. The coating process can then be carried out more quickly because of the double current strengths.

Nach einer Ausgestaltung der Erfindung kann die obere und/oder untere Elektrode in ihrem Abstand zum Band einstellbar sein. Hierbei kommt der Einstellbarkeit der oberen, sich im Betrieb verbrauchenden Elektrode besondere Bedeutung zu. Wird die obere Elektrode auf konstantem Abstand gehalten, kann die einmal eingestellte Spannung aufrechterhalten werden. Besonderer Vorrichtungen zur Spannungsregelung bedarf es nicht. Da nur die obere Elektrode sich verbraucht, diese aber leicht zugänglich ist, ist die für den Austausch benötigte Zeit vergleichsweise gering.According to an embodiment of the invention, the distance between the upper and / or lower electrode can be adjustable. The adjustability of the upper electrode that consumes during operation is of particular importance. If the upper electrode is kept at a constant distance, the voltage once set can be maintained. Special devices for voltage regulation are not required. Since only the upper electrode is worn out but is easily accessible, the time required for the replacement is comparatively short.

Bei Vorrichtungen zum Elektroplattieren, die sowohl oberhalb als auch unterhalb des zu beschichtenden Bandes lösliche Elektroden aus Beschichtungsmetall aufweisen, hat man beobachtet, dass eine, wenn auch geringere Beschichtung der jeweiligen Bandseite auch dann eintritt, wenn die dieser Seite des Bandes zugeordnete Elektrode nicht an der Spannungsquelle angeschlossen ist. Für eine einwandfreie einseitige Beschichtung ist es also bei dieser Vorrichtung erforderlich, die der nicht zu beschichtenden Bandseite zugeordnete Elektrode aus dem Elektrolyten zu entfernen. Bei der erfindungsgemässen Vorrichtung ist ein solcher Umbau nicht erforderlich. Allein durch Abschalten der sich nicht verbrauchenden Elektrode bleibt die dieser Elektrode zugekehrte Seite des Bandes ohne Beschichtung. Es ist allerdings auch möglich, diese Elektrode so weit abzusenken, dass sie keinen Einfluss mehr auf die ihr zugekehrte Seite des Bandes nehmen kann, selbst wenn sie noch an Spannung liegt.In devices for electroplating, which have soluble electrodes made of coating metal both above and below the strip to be coated, it has been observed that, although less coating of the respective strip side occurs even if the electrode assigned to this side of the strip is not on the Voltage source is connected. For a perfect one-sided coating, it is therefore necessary in this device to remove the electrode associated with the strip side not to be coated from the electrolyte. Such a modification is not necessary in the device according to the invention. Simply by switching off the electrode that is not consuming, the side of the strip facing this electrode remains without a coating. However, it is also possible to lower this electrode to such an extent that it can no longer influence the side of the strip facing it, even if it is still live.

Bei Vorrichtungen, in denen Bänder unterschiedlicher Breite verarbeitet werden sollen, ergeben sich dadurch Schwierigkeiten, dass die Elektroden im wesentlichen nur in den vom Band überdeckten Bereichen verbraucht werden. Falls mit einer solchen Vorrichtung zu einem späteren Zeitpunkt ein breites Band beschichtet werden soll, ergibt sich wegen des über die Breite unterschiedlichen Abstandes zwischen Elektrode und Band an den Bandkanten eine dickere Beschichtung. Um diese Nachteile zu vermeiden, ist nach einer weiteren Ausgestaltung der Erfindung vorgesehen, sowohl die oberhalb des Bandes befindliche lösliche Elektrode als auch die unlösliche, unterhalb des Bandes angeordnete Elektrode in parallel zur Bandkante verlaufende Segmente zu unterteilen, die wahlweise und in Abhängigkeit von der Breite des zu beschichtenden Bandes an die Stromquelle angeschlossen werden können. Diese Anordnung ist auch beim einseitigen Elektroplattieren von Vorteil. Durch Abschalten der Randbereiche der Elektroden kann dem Umgriff des elektrischen Feldes auf die der Elektrode abgekehrte Bandseite und damit einer unbeabsichtigten Beschichtung dieser Seite wirkungsvoll begegnet werden.In devices in which tapes of different widths are to be processed, difficulties arise because the electrodes are essentially used only in the areas covered by the tape. If a wide band is to be coated with such a device at a later point in time, a thicker coating results at the band edges because of the different width between the electrode and the band. To avoid these disadvantages, after Another embodiment of the invention provides to subdivide both the soluble electrode located above the tape and the insoluble electrode located below the tape into segments running parallel to the tape edge, which are optionally connected to the power source depending on the width of the tape to be coated can be. This arrangement is also advantageous for one-sided electroplating. By switching off the edge areas of the electrodes, the encroachment of the electrical field on the side of the strip facing away from the electrode and thus an unintentional coating of this side can be countered effectively.

Weiter kann einem geringen Umgriff des elektrischen Feldes um die Bandkanten und die damit verbundene geringe Beschichtung der der Elektrode abgekehrten Bandseite dadurch vermieden werden, dass parallel zu den Bandkanten verlaufende Abschirmmasken vorgesehen sind, an die gegebenenfalls eine Spannung zum Aufbau eines Schutzfeldes anlegbar ist.Furthermore, a slight encroachment of the electrical field around the strip edges and the associated slight coating of the strip side facing away from the electrode can be avoided by providing shielding masks running parallel to the strip edges, to which a voltage can optionally be applied to build up a protective field.

Die Gefahr eines Umgriffes des elektrischen Feldes kann aber auch dadurch vermindert oder ausgeschlossen werden, dass die äusseren Segmente an eine Spannung entgegengesetzter Polung angeschlossen werden.However, the risk of the electric field reaching around can also be reduced or eliminated by connecting the outer segments to a voltage of opposite polarity.

Obgleich bei der erfindungsgemässen Vorrichtung ein Umpumpen zwischen einer Aufbereitungsanlage und dem mit Elektrolyten gefüllten Tank nicht erforderlich ist, ist es zweckmässig, den Elektrolyten im Tank umzupumpen, und mittels Düsen den gewünschten Stellen zwischen Band und Elektrode zuzuführen, um eine möglichst gleichmässige Ionenkonzentration in diesem Bereich zu erreichen.Although pumping between a treatment plant and the tank filled with electrolytes is not necessary in the device according to the invention, it is expedient to pump around the electrolyte in the tank and to supply the desired points between the strip and the electrode by means of nozzles in order to achieve a uniform ion concentration in this area to reach.

Nach einer weiteren Ausgestaltung der Erfindung können mehrere obere und untere Elektroden in einem Tank hintereinander angeordnet sein. Es ist aber auch möglich, mehrere Tanks vorzusehen. In diesem Fall ist die Distanz zwischen den Bandführungsstellen geringer, so dass das Band den gewünschten Abstand zu den Elektroden besser hält.According to a further embodiment of the invention, a plurality of upper and lower electrodes can be arranged one behind the other in a tank. However, it is also possible to provide several tanks. In this case, the distance between the tape guide points is smaller, so that the tape maintains the desired distance from the electrodes better.

Im folgenden wird die Erfindung anhand einer ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Im einzelnen zeigen

  • Fig. 1 eine Vorrichtung zum Elektroplattieren von Metallband in schematischer Darstellung in Seitenansicht und
  • Fig. 2 die Vorrichtung gemäss Fig. 1 im Schnitt nach der Linie A-B.
The invention is explained in more detail below with the aid of a drawing that represents an exemplary embodiment. Show in detail
  • Fig. 1 shows a device for electroplating metal strip in a schematic representation in side view and
  • Fig. 2 shows the device of FIG. 1 in section along the line AB.

Oberhalb einer Auffangwanne 9 für Elektrolytflüssigkeit 10 sind mehrere Vorrichtungen zum Elektroplattieren hintereinander angeordnet. Jede Vorrichtung besteht aus einer Stromrolle 1, über die einem zu beschichtenden Band 7 Strom zuführbar ist, und einer unterhalb der Stromrolle 1 angeordneten Andruckrolle 2, einem mit Elektrolyten 6 gefüllten Tank 8, an dessen vorderem und hinterem Rand Dichtungsrollen 3 vorgesehen sind, zwischen denen das Band 7 in den Tank 8 eintritt und aus dem Tank 8 austritt. In jedem Tank 8 sind unterhalb des Bandes 7 und parallel zum Band 7 zwei Elektroden 5 aus im Elektrolyten unlöslichem Material, z.B. Titan, Kohlenstoff oder mit Blei beschichtete Kupferplatten, und oberhalb des Bandes 7 und parallel zu diesem Elektroden 4 aus löslichem Material, z.B. Zink, angeordnet. An die Elektroden 4, 5 wird die andere Anschlussklemme der Stromquelle angelegt, wobei die Elektroden 5 wahlweise abschaltbar sind.A plurality of devices for electroplating are arranged one behind the other above a collecting trough 9 for electrolyte liquid 10. Each device consists of a current roller 1, via which a band 7 to be coated can be supplied with current, and a pressure roller 2 arranged below the current roller 1, a tank 8 filled with electrolytes 6, on the front and rear edge of which sealing rollers 3 are provided, between which the band 7 enters the tank 8 and exits the tank 8. In each tank 8 there are two electrodes 5 made of material insoluble in the electrolyte, e.g. Titanium, carbon or lead-coated copper plates, and above the band 7 and parallel to this electrodes 4 made of soluble material, e.g. Zinc, arranged. The other connection terminal of the current source is applied to the electrodes 4, 5, the electrodes 5 optionally being able to be switched off.

Wie Fig. 2 zeigt, bestehen die oberen und unteren Elektroden 4, 5 insbesondere in den Randbereichen aus mehreren Segmenten. Die Segmente der oberen Elektrode 4 können auseinandergefahren werden, während die Segmente der unteren Elektrode 5 durch Isolierstreifen 11 voneinander getrennt sind. Die Segmente der Elektroden 4, 5 sind wahlweise an die Stromquelle anschliessbar. Zwischen dem Band 7 und der unteren Elektrode 5 sind im Randbereich Masken 12 vorgesehen, die horizontal und senkrecht zu den Rändern verfahrbar sind.As shown in FIG. 2, the upper and lower electrodes 4, 5 consist of several segments, particularly in the edge areas. The segments of the upper electrode 4 can be moved apart, while the segments of the lower electrode 5 are separated from one another by insulating strips 11. The segments of the electrodes 4, 5 can optionally be connected to the power source. Between the band 7 and the lower electrode 5, masks 12 are provided in the edge area which can be moved horizontally and perpendicularly to the edges.

Über nicht dargestellte Umwälzpumpen und Düsen kann der Elektrolyt in die bzw. den Spalt zwischen der aktiven Elektrode 4 und 5 oder 4 und dem zu beschichtenden Band 7 gepumpt werden, so dass hier eine gleichmässige lonenkonzentration herrscht.The electrolyte can be pumped into the gap or gap between the active electrodes 4 and 5 or 4 and the strip 7 to be coated by means of circulation pumps and nozzles, not shown, so that there is a uniform ion concentration here.

Claims (7)

1. Apparatus for electroplating metal strips, in particular for galvanising steel strip, having a tank filled with electrolyte fluid and at least one electrode dipping into the fluid and arranged above the strip, and one electrode arranged below the strip and parallel thereto, characterised in that the electrode (4) arranged above the strip (7) consists of the metal to be deposited, for example zinc, and the electrode (5) arranged below the strip (7) consists of a material insoluble in the electrolyte and, for the purpose of one-sided electroplating, can be disconnected from the current source.
2. Apparatus according to Claim 1, characterised in that the distance between the upper and/or lower electrode (4, 5) and the strip is adjustable.
3. Apparatus according to Claim 1 or 2, characterised in that the electrodes (4, 5) are subdivided into several segments which extend parallel to the strip edge and can be connected independently of one another to the current source.
4. Apparatus according to one of Claims 1 to 3, characterised in that the electrodes (4, 5) are associated with screening masks for screening the electric field parallel to the edges of the strip to be plated.
5. Apparatus according to Claim 3, characterised in that the outer segment or segments can be connected to a voltage of a polarity opposite to that of the remaining electrode.
6. Apparatus according to one of Claims 1 to 5, characterised in that pumps for circulating the electrolyte and nozzles for adjusting the flow direction and preferably the flow velocity are provided.
7. Apparatus according to one of Claims 1 to 6, characterised in that several electrodes are arranged in series above and below the strip.
EP81103085A 1980-05-03 1981-04-24 Apparatus for electroplating Expired EP0039453B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803017079 DE3017079A1 (en) 1980-05-03 1980-05-03 DEVICE FOR ELECTROPLATING
DE3017079 1980-05-03

Publications (2)

Publication Number Publication Date
EP0039453A1 EP0039453A1 (en) 1981-11-11
EP0039453B1 true EP0039453B1 (en) 1984-12-05

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US (1) US4347115A (en)
EP (1) EP0039453B1 (en)
JP (1) JPS5729594A (en)
CA (1) CA1165725A (en)
DE (2) DE3017079A1 (en)
ES (1) ES501801A0 (en)

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US3954571A (en) * 1970-04-15 1976-05-04 M&T Chemicals Inc. Wire and strip line electroplating
AR204283A1 (en) * 1975-01-21 1975-12-10 Uss Eng & Consult APPARATUS FOR THE ELECTROLYTIC TREATMENT OF METAL STRIPS
CA1069459A (en) * 1975-10-15 1980-01-08 Lowell W. Austin Method of producing metal strip having a galvanized coating on one side
US3989604A (en) * 1975-10-15 1976-11-02 National Steel Corporation Method of producing metal strip having a galvanized coating on one side
US4183799A (en) * 1978-08-31 1980-01-15 Production Machinery Corporation Apparatus for plating a layer onto a metal strip
US4282073A (en) * 1979-08-22 1981-08-04 Thomas Steel Strip Corporation Electro-co-deposition of corrosion resistant nickel/zinc alloys onto steel substrates

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Publication number Publication date
ES8202597A1 (en) 1982-02-16
US4347115A (en) 1982-08-31
ES501801A0 (en) 1982-02-16
JPS5729594A (en) 1982-02-17
CA1165725A (en) 1984-04-17
DE3017079A1 (en) 1981-11-05
EP0039453A1 (en) 1981-11-11
DE3167554D1 (en) 1985-01-17

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