EP0134347A1 - Support d'électrode pour le dépôt électrolytique en continu - Google Patents

Support d'électrode pour le dépôt électrolytique en continu Download PDF

Info

Publication number
EP0134347A1
EP0134347A1 EP83304937A EP83304937A EP0134347A1 EP 0134347 A1 EP0134347 A1 EP 0134347A1 EP 83304937 A EP83304937 A EP 83304937A EP 83304937 A EP83304937 A EP 83304937A EP 0134347 A1 EP0134347 A1 EP 0134347A1
Authority
EP
European Patent Office
Prior art keywords
support
electrode
electrode support
electrodes
trough
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
EP83304937A
Other languages
German (de)
English (en)
Other versions
EP0134347B1 (fr
Inventor
Hiroshi Nemoto
Kazuaki Miyachi
Akira Komoda
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.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to DE8383304937T priority Critical patent/DE3375932D1/de
Priority to EP19830304937 priority patent/EP0134347B1/fr
Publication of EP0134347A1 publication Critical patent/EP0134347A1/fr
Application granted granted Critical
Publication of EP0134347B1 publication Critical patent/EP0134347B1/fr
Expired legal-status Critical Current

Links

Images

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

Definitions

  • This invention relates to an assembled electrode support device for a radial cell type electrolyte bath, and more particularly to an electrode support device for a continuous electroplating bath whose consumable electrode are progressively renewed to correct change in thickness of the electrodes due to melting away of the electrodes into the electrolyte.
  • a radial type electrolytic cell has been used in for example continuous zinc plating lines for metal strips such as cold rolled thin plates.
  • lower halves of large diameter rotating drums for current supply are immersed in an electrolyte in the cell, along which immersed lower halves is trained a metal strip introduced in and out of the cell, during which electric current is supplied from anodes arranged in opposition to the strip with gaps therebetween in radial directions of .the drums.
  • Such an arrangement is advantageous for plating only one surface of a strip without plating the other surface thereof. Since, however, great electric power is required for a plant on large scale including such electrolytic cells, it is essential to maintain the gaps as small as possible so as to eliminate ineffective or superfluous consumption power.
  • anodes are insoluble
  • metal plates to be plated are soluble electrodes.
  • the latter case is simple in maintenance because of metal component continuously replenished from anodes and is useful particularly to obtain thick plating coating with large electric power because of less gass production at the electrodes.
  • the anodes tend to solve with proceeding of the plating so as to be thinner to progressively enlarge the gaps, thereby increasing electric resistance to decrease current density and therefore to progressively decrease plating deposition.
  • the enlarged gaps must be successively corrected in response to the consumption of the electrodes with the lapse of time.
  • the electric support is generally mainly made of a graphite rod having a fairly large square . ' oss-section (approximately 450 x 450 mm) for fulfiling conditions required for such plants, i.e. corrosion-resistance to the electrolyte, low overvoltage and low cost.
  • the electrode supports are not accurately positioned at the bottom of the electrolyte bath, the gaps cannot be properly kept while the consumable electrodes are being renewed. Accordingly, the electrode supports have been supported on stationary bases rigidly mounted on the bottom of the bath through support troughs having core members of (L-shaped) angle steels upwardly opening as shown in Figs. la and lb.
  • a metal strip 2 passes along lower halves of the drums 1 immersed in the electrolyte bath T.
  • Anodes 3 consist of groups of consumable electrodes 3 1 arranged side by side in opposition to the metal strip 2 with gaps G lative thereto in radial directions of the rotating drums 1.
  • the anodes 3 are arranged on opposite sides of an axis of the rotating drums 1 upstream and downstream of a running direction of the metal strip 2 and anchored on support surfaces 6 of the electrode supports 5 with the aid of protrusions 4 formed on outer surfaces of the consumable electrodes 3' so as to permit the electrodes 3' to be moved in succession along the support surfaces of the electrode supports.
  • the electrode supports 5 are securely supported through the support troughs 8 on the stationary bases 9 rigidly mounted on the bottom of the bath.
  • gaps G' and G" in the proximity of ends of the anodes 3 become narrow under the relative positional condition between the rotating drums and anodes and the wearing condition of the anodes as shown in Figs. 2a and 2b, when a width of the metal strip 2 becomes wider as shown at 2'.
  • an electrode support device for a continuous electroplating bath including current supply rotating drums whose parts are immersed in said electroplating bath, a metal strip to be plated being trained about the immersed parts of the rotating drums, and a number of arcuate consumable electrodes arranged side by side along generators of said rotating drums and successively movable on support surfaces of electrode supports so as to supply new consumable electrodes at one ends of the arranged electrodes and remove consumed electrodes from the other ends
  • the support device comprises adjusting means for adjusting said electrode supports to remove any unevenness gaps between said metal strip and said consumable electrodes.
  • the adjusting means for each the electrode support comprises a support trough supporting the electrode support and a stationary base rotatably supporting the support trough so as to permit the support surface of the electrode support to be adjustably tilted and fixedly supporting the support trough thereon by means of adjusting bolts.
  • the adjusting means for each the electrode support comprises hanging members each supporting each end of the electrode support and upwardly extending from a surface of an electrolyte and further extending downward beyond an upper edge of a bath of the electrolyte, and translation guides each slidably guiding the lower end extending downward of each the hanging member in a direction substantially in parallel with a radial surface of said current supply rotating drums.
  • the electroplating bath comprises rotating drams 1 for supplying electric current.
  • a metal strip 2 passes along lower halves of the drams 1 below a surface of an electrolyte (not shown for clarity).
  • Anodes 3 consist of groups of consumable electrodes 3' arranged side by side in opposition to the metal strip with gaps relative thereto in radial directions of the rotating drums 1.
  • the anodes 3 are arranged on opposite sides of an axis of the rotating drums 1 upstream and downstream of a running direction of the strip 2 and anchored on a pair of electrode supports 5 fixed substantially in parallel with the axis of the drums 1 with the aid of protrusions 4 formed centrally on outer surfaces of the consumable electrodes 3' so as to permit the electrodes 3' to be moved in succession in the axial directions of the electrode supports 5.
  • Each the consumable electrode 3' is generally made of arcuate zinc casting.
  • Each the electrode support 5 has an electrode support surface 6 immediately below the protrusions 4 of the consumable electrodes 3 1 for supporting the outer surfaces of the electrodes 3'.
  • each the electrode support is slightly angularly arranged relative to a generator of the rotating drums with a gradient corresponding to a ratio of the consumed amount of the consumable electrode 3' while the new electrode 3" becomes the waste electrode 3"' to the width of the anode.
  • the electrode support 5 is supported with a gradient on a support trough 8 at a bottom of the bath, which is in turn held by a stationary base 9.
  • each the stationary base 9 is suspended in the electrolyte bath by inclining lifts 11 of adjusting devices 10 arranged outside of the electrolyte bath and including inclining lift guides 12. ,
  • the arrangement shown in Fig. 3 includes bearings 13 for the drums 1, a motor 14 for driving the drums 1, a reduction gear 15, a current collector ring 16, cathode bus bars 17, current supply bars 18 for the electrode supports 5, anode bus bars 19 and rectifiers 20.
  • the support trough 8 comprises a core member 21 made of an L-shaped steel arranged so as to upward open its V-shaped groove and a corrosion-resistant coating such as a rubber lining 22 on the V-shaped groove, and the stationary base 9 comprises a trough-shaped core member 23 and a rubber lining 24 applied thereto as shown in Figs. 4a and 4b.
  • the support trough 8 is provided in the proximity of its ends with a pair of arcuate projection pieces 25 extending downward along the trough-shaped stationary base 9 and lined with a rubber lining 22 so as to permit the support trough 8 to be rotated about the aixs of the electrode support 5.
  • Connecting core members 26 serve to connect ends of the arcuate projection pieces 25 to the support trough 8 at its upper edges and have their length longer than a width of the arcuate projection pieces 25 as shown in Fig. 4d.
  • Each the connecting core member 26 is formed with a pair of bolt apertures 27.
  • the stationary base 9 is provided with a pair of ears 28 on both sides of each the arcuate projection piece 25.
  • the support trough 8 is fixed to the stationary base 9 by means of adjusting bolts 30 with nuts 31 passing and fastening between notches 29 formed in the ears 28 and the bolt apertures 27 of the connecting core members 26.
  • a reference numeral 32 denotes reinforcing core members for the stationary base 9 as shown in Fig. 4b.
  • the base 9 with the support trough 8 for the electrode support 5 is suspended in the electrolyte bath by the inclining lifts 11 as above mentioned.
  • An end piece 40 at each end of the base 9 is provided with a pair of crevice lla and llb connected by pins 42' to lower bifurcated ends of a hanging member 42.
  • the hanging member 42 is movable in a direction of the inclining lift guide or translation guide 12 with the aid of a lower edge 44 of a hanging portion 43 upwardly extending from the surface (not shown) of the electrolyte and further extending downward beyond an upper edge of the bath.
  • An reference numeral 46 denotes an operating wheel for the purpose.
  • the operating wheel 46 is fixedly keyed to an end of a worm shaft in a worm gear box 48 mounted on a bracket 47 fixed by welding to a sidewall w of the electrolyte bath.
  • the lower edge 44 of the hanging portion 43 is connected by a pin 50' to and embraced by an end piece 40 of a screw threaded stem 49 actuated by a worm and a worm gear in mesh with each other in the gear box 48.
  • the lower edge 44 of the hanging portion 43 is provided with a slider 51 having an inverted T-shaped cross-section slidably guided by a translation guide 52 provided on a bracket 23 fixed to the sidewall w of the bath.
  • the sliding direction of the slider 51 and hence the hanging portion 43 is located to be in parallel with a radial surface of the current supply rotating drums 1 including a center of the electrode support 5 as shown in Fig. 5b, so that the gaps between the anode 3 and the metal strip 2 can easily be adjusted without causing any unevenness in gap at upper and lower portions of the anode.
  • the ends of the electrode supports 5 are separately adjusted so as to change the gradients relative to generators of the current supply rotating drums 1, so that such an adjustment enables the electroplating apparatus to be easily applicable to metal strips of various widths and the consumable electrodes 3' to be effectively utilized so as to lower the unit price of the anodes.
  • gaps between assembled electrodes and a metal strip to be plated can be externally adjusted in width directions of the strip to meet present electrolytic conditions, thereby eliminating the edge-overcoating which would occur when the width of the strip changes to be wider and making proper the consuming rate of the electrodes until wasted to lower the unit price thereof.

Landscapes

  • 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)
EP19830304937 1983-08-25 1983-08-25 Support d'électrode pour le dépôt électrolytique en continu Expired EP0134347B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8383304937T DE3375932D1 (en) 1983-08-25 1983-08-25 Electrode support device for continuous electroplating bath
EP19830304937 EP0134347B1 (fr) 1983-08-25 1983-08-25 Support d'électrode pour le dépôt électrolytique en continu

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19830304937 EP0134347B1 (fr) 1983-08-25 1983-08-25 Support d'électrode pour le dépôt électrolytique en continu

Publications (2)

Publication Number Publication Date
EP0134347A1 true EP0134347A1 (fr) 1985-03-20
EP0134347B1 EP0134347B1 (fr) 1988-03-09

Family

ID=8191265

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830304937 Expired EP0134347B1 (fr) 1983-08-25 1983-08-25 Support d'électrode pour le dépôt électrolytique en continu

Country Status (2)

Country Link
EP (1) EP0134347B1 (fr)
DE (1) DE3375932D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0240671A1 (fr) * 1986-02-13 1987-10-14 Metal Coatings International Inc. Application d'une plaque électrolytique à un métal mouvant

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB419391A (en) * 1933-07-04 1934-11-12 Arthur Ivor Wynne Williams Improvements in or relating to the electro-deposition of metals
DE2165329A1 (de) * 1971-01-04 1972-07-27 Battelle Memorial Institute Verfahren zum schnellen galvanischen Niederschlagen von Nickel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB419391A (en) * 1933-07-04 1934-11-12 Arthur Ivor Wynne Williams Improvements in or relating to the electro-deposition of metals
DE2165329A1 (de) * 1971-01-04 1972-07-27 Battelle Memorial Institute Verfahren zum schnellen galvanischen Niederschlagen von Nickel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0240671A1 (fr) * 1986-02-13 1987-10-14 Metal Coatings International Inc. Application d'une plaque électrolytique à un métal mouvant

Also Published As

Publication number Publication date
EP0134347B1 (fr) 1988-03-09
DE3375932D1 (en) 1988-04-14

Similar Documents

Publication Publication Date Title
US2544510A (en) Apparatus and method for plating strips
US4318794A (en) Anode for production of electrodeposited foil
KR100391839B1 (ko) 전해용복합전극
US5628892A (en) Electroplating method and apparatus for the preparation of metal foil and split insoluble electrode used therein
US4451345A (en) Electrode support device for continuous electroplating bath
US5393396A (en) Apparatus for electrodepositing metal
JPH0693490A (ja) 電解金属箔の製造方法
EP0134347A1 (fr) Support d'électrode pour le dépôt électrolytique en continu
EP0134580A1 (fr) Méthode et appareil pour l'usinage électrolytique
CA2551273A1 (fr) Galvanoplastie perfectionnee sur bandes metalliques
KR940007609B1 (ko) 전해구리박의 제조방법 및 장치
JPS6033917B2 (ja) ラジアルセル型電解槽における極間調整装置
EP1278899B1 (fr) PROCéDé ET DISPOSITIF DE REVêTEMENT éLECTROLYTIQUE D'UNE BANDE MéTALLIQUE
JPH0741984A (ja) 電気めっき方法および電気めっき用分割型不溶性電極
JPS58151499A (ja) ラジアルセル型電解槽における陽極調整装置
US3856653A (en) Platinum clad tantalum anode assembly
AU2001256857A1 (en) Method and device for the electrolytic coating of a metal strip
JPS6058317B2 (ja) ラジアルセル型電解槽の組立て電極支持装置の通電ギャップ調整装置
JP2003247100A (ja) 帯状金属板の連続電気めっき方法
EP3763850A1 (fr) Anode et procédé de dépôt électrolytique d'une couche métallique sur un substrat métallique
JP2000192292A (ja) 電気メッキ用陽極装置
JPH06306695A (ja) 金属ストリップの連続電気めっき設備ならびに幅方向めっき付着量制御方法
JPS58151497A (ja) ラジアルセル型電気めつき装置のアノ−ドサポ−ト
JPS621241Y2 (fr)
JPH05339797A (ja) ラジアルセル型電気めっき装置の可溶性電極

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19840718

AK Designated contracting states

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 19860421

D17Q First examination report despatched (deleted)
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 3375932

Country of ref document: DE

Date of ref document: 19880414

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19950814

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19950828

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19960825

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960825

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19970501

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19990810

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010430

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST