EP0039453B1 - Dispositif d'électrodéposition - Google Patents

Dispositif d'électrodéposition 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
Authority
EP
European Patent Office
Prior art keywords
strip
electrode
electrodes
electrolyte
electroplating
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
Application number
EP81103085A
Other languages
German (de)
English (en)
Other versions
EP0039453A1 (fr
Inventor
Manfred Dipl.-Ing. Espenhahn
Manfred Dipl.-Ing. Folwaczny
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.)
Thyssen AG
Original Assignee
Thyssen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thyssen AG filed Critical Thyssen AG
Publication of EP0039453A1 publication Critical patent/EP0039453A1/fr
Application granted granted Critical
Publication of EP0039453B1 publication Critical patent/EP0039453B1/fr
Expired legal-status Critical Current

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Classifications

    • 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)

Claims (7)

1) Dispositif d'électro-deposition de bandes métalliques, en particulier pour la galvanisation d'une bande d'acier, avec une cuve emplie de liquide électrolytique et au moins une électrode plongée dedans au-dessus de la bande et une électrode au-dessous de la bande et parallèle à la première, caractérisé par le fait que l'électrode (4) disposée au-dessus de la bande (7) est constituée du métal à déposer, par exemple du zinc, et l'électrode (5) disposée au-dessous de la bande (7) est constituée d'un matériau insoluble dans l'électrolyte et peut être déconnectée de la source de courant dans le but d'un électro-deposition sur une seule face.
2) Dispositif selon la revendication 1, caractérisé par le fait que les électrodes (4, 5) supérieure et/ou inférieure sont à une distance réglable par rapport à la bande.
3) Dispositif selon l'une des revendications 1 et 2, caractérisé par le fait que les électrodes (4, 5) sont divisées en plusieurs segments s'étendant parallèlement au bord de la bande et qui peuvent être raccordés à la source de courant indépendamment les uns des autres.
4) Dispositif selon l'une des revendications 1 à 3, caractérisé par le fait que des masques de blindage pour former écran au champ électrique sont adjoints aux électrodes parallèlement aux bords de la bande à recouvrir.
5) Dispositif selon la revendication 3, caractérisé par le fait que le ou les segments extérieurs peuvent être raccordés à une tension qui est à pôles opposés par rapport à la tension des autres électrodes.
6) Dispositif selon l'une des revendications 1 à 5, caractérisé par le fait qu'on prévoit des pompes pour transvaser l'électrolyte et des buses pour régler la direction d'écoulement et avantageusement la vitesse d'écoulement.
7) Dispositif selon l'une des revendications 1 à 6, caractérisé par le fait que plusieurs électrodes sont disposées les unes derrière les autres au-dessus et au-dessous de la bande.
EP81103085A 1980-05-03 1981-04-24 Dispositif d'électrodéposition Expired EP0039453B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803017079 DE3017079A1 (de) 1980-05-03 1980-05-03 Vorrichtung zum elektroplattieren
DE3017079 1980-05-03

Publications (2)

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

Family

ID=6101585

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103085A Expired EP0039453B1 (fr) 1980-05-03 1981-04-24 Dispositif d'électrodéposition

Country Status (6)

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

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5751289A (en) * 1980-09-10 1982-03-26 Fuji Photo Film Co Ltd Electrolytic treating device for belt-like metallic plate
US4514266A (en) * 1981-09-11 1985-04-30 Republic Steel Corporation Method and apparatus for electroplating
DE3439750A1 (de) * 1984-10-31 1986-04-30 Inovan-Stroebe GmbH & Co KG, 7534 Birkenfeld Galvanisierverfahren
DE3864526D1 (de) * 1987-01-26 1991-10-10 Siemens Ag Galvanisierungseinrichtung fuer plattenfoermige werkstuecke, insbesondere leiterplatten.
JPH0730480B2 (ja) * 1987-01-26 1995-04-05 三菱重工業株式会社 鋼帯の連続電解メツキ装置
IT1227203B (it) * 1988-08-18 1991-03-27 Techint Spa Impianto a cella orizzontale di metallizzazione elettrolitica, ad anodi solubili, per trattamento elettrolitico in continuo di nastrid'acciaio su una o due facce, e procedimento
DE3901807A1 (de) * 1989-01-21 1990-07-26 Roland Schnettler Vorrichtung zum elektrolytischen abscheiden von metallen auf einer oder beiden seiten von baendern
BE1006106A3 (fr) * 1990-11-08 1994-05-17 Cockerill Rech & Dev Procede et dispositif de reglage de l'epaisseur d'un revetement depose par electrolyse sur une plaque ou feuille metallique.
US5344538A (en) * 1993-01-11 1994-09-06 Gould Inc. Thin plate anode
DE19717489B4 (de) * 1997-04-25 2008-04-10 Sms Demag Ag Anordnung zur elektrogalvanischen Metallbeschichtung eines Bandes
DE102009022337A1 (de) * 2009-05-13 2010-11-18 Gebr. Schmid Gmbh & Co. Verfahren und Vorrichtung zur Behandlung eines Substrats
DE102009041068A1 (de) * 2009-09-10 2011-03-24 GM Global Technology Operations, Inc., Detroit Vorrichtung sowie Verfahren zur galvanischen Abscheidung einer Schicht auf einen Gegenstand
CN104342742B (zh) * 2013-08-02 2016-12-28 天津华源线材制品有限公司 一种镀锌电镀槽的电极配置结构

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2723953A (en) * 1951-11-09 1955-11-15 Crown Cork & Seal Co Electrolytic plating apparatus
US3954571A (en) * 1970-04-15 1976-05-04 M&T Chemicals Inc. Wire and strip line electroplating
AR204283A1 (es) * 1975-01-21 1975-12-10 Uss Eng & Consult Aparato para el tratamiento electrolitico de tiras de metal
CA1069459A (fr) * 1975-10-15 1980-01-08 Lowell W. Austin Methode de production d'un ruban metallique galvanise sur une face
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

Also Published As

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

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