EP0246175B1 - Counterflow electrolyte injector - Google Patents

Counterflow electrolyte injector Download PDF

Info

Publication number
EP0246175B1
EP0246175B1 EP87470008A EP87470008A EP0246175B1 EP 0246175 B1 EP0246175 B1 EP 0246175B1 EP 87470008 A EP87470008 A EP 87470008A EP 87470008 A EP87470008 A EP 87470008A EP 0246175 B1 EP0246175 B1 EP 0246175B1
Authority
EP
European Patent Office
Prior art keywords
fluid
electrolyte
injector
anodes
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP87470008A
Other languages
German (de)
French (fr)
Other versions
EP0246175A1 (en
Inventor
Gérard René Colin
Alain Leclercq
André Klein
Patrick Mara
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.)
Sollac SA
Original Assignee
Lorraine de Laminage Continu SA SOLLAC
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 Lorraine de Laminage Continu SA SOLLAC filed Critical Lorraine de Laminage Continu SA SOLLAC
Publication of EP0246175A1 publication Critical patent/EP0246175A1/en
Application granted granted Critical
Publication of EP0246175B1 publication Critical patent/EP0246175B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/08—Electroplating with moving electrolyte e.g. jet electroplating

Definitions

  • the invention relates to surface treatment installations, such as pickling, degreasing, phosphating installations and in particular installations for electrolytic coating of steel strips.
  • An electrogalvanizing line comprises one or more cells filled with electrolyte into which the steel strip is immersed for coating on one or both sides.
  • the steel strip passes over cathode conductive rollers partially submerged in the electrolyte bath.
  • Soluble zinc anodes are immersed in the electrolyte bath and arranged parallel and at a distance from the conductive rollers.
  • the sheet metal strip guided by the conductive rollers passes through the space between said rollers and the soluble zinc anodes.
  • European patent EP 0 125 707, US patents 3,975,242, 4,500,400 and GB patent 2,147,009 disclose counter-current injection by which electrolyte is injected against the current in the space between the strip and the anodes.
  • the space between the strip and the spout being relatively small, the flow of electrolyte arrival through the edges of the strip and the spout is less than the flow required to feed this depression.
  • the surface of the electrolyte bath becomes hollow, causing air to be drawn into the space between the strip and the anodes.
  • a first solution recommended by a person skilled in the art consists in immersing more deeply or even completely the injector in the electrolyte bath to eliminate the pump effect. This solution is hardly acceptable because it results in a reduction in the useful length of the anodes. It also forces immersion of the anode heads. This immersion no longer allows operators to visually control the positioning of the anodes.
  • Another solution to avoid the depletion of the cathode film of the electrolyte is to widen the space between the anodes and the conductive roller. This solution is not satisfactory since it requires more electrical energy.
  • the object of the present invention is to remedy the above drawbacks of known counter-current injectors, without having to modify the space between the anodes and the conductive roller, and makes it possible to inject the necessary and sufficient flow of electrolyte for completely sweep the space between the anodes and the steel strip led by the conductive roller.
  • an injector provided with a multitude of injection tubes separated from each other so as to allow the passage and arrival of a sufficient flow of electrolyte, as it is as claimed in claim 1,
  • the injector according to the invention comprises at least one electrolyte inlet pipe 1, the number and the diameter of the pipes 1 varying on the one hand as a function of the length of the injector itself dependent on the length of the cathode conductive roller on which the strip 14 passes and on the other hand as a function of the electrolyte flow rate required to ensure complete scanning of the space between the soluble anodes 15 and the strip 14 (FIG. 2).
  • This conduit 1 opens into a central chamber 2, of circular section, for distributing the flow of the electrolyte.
  • the central chamber 2 extends over the entire length of the injector and is closed at its two ends by plugs 3.
  • the central chamber 2 is provided with a plurality of orifices 4 drilled through the internal partition 5 of the 'injector.
  • These orifices 4 open onto a peripheral chamber 6 for homogenizing the flow of electrolyte, coaxial with the central chamber 2 and enveloping it over its entire length.
  • the orifices 4 are formed on the lower part of the central chamber 2 near a barrier 7 so as to direct the flow of electrolyte in the peripheral chamber 6 in one direction.
  • centering pins 8 are inserted, as necessary, in the peripheral chamber 6.
  • the electrolyte flow is conducted by the peripheral chamber 6 in a spout 9 provided with a plurality of holes 10.
  • This spout 9, according to an essential characteristic of the invention, is extended by injection tubes 11.
  • the injector of the present invention comprises a plurality of tubes injection 11 giving it the appearance of a comb. These injection tubes 11 ensure the free passage between them of the electrolyte from the bath 12. To allow sufficient arrival of the electrolyte from the bath into the space between the rollers and the anodes, the width of the heads of anodes 15 is decreased.
  • each injection tube is flattened in the form of a "carp tail" shape in order to ensure a more regular injection of the electrolyte.
  • the total section of the clearance 13 passing between the tubes 11 is such that it causes a sufficient reduction in the vacuum appearing between the strip 14 and the injector and eliminates the undesired air aspirations between the soluble anodes 15 and the strip 14
  • the injection tubes 11 are designed so that they can be removed from the spout 9.

Description

L'invention concerne les installations de traitement de surface, telles que les installations de décapage, de dégraissage, de phosphatation et en particulier les installations de revêtement électrolytique des bandes d'acier.The invention relates to surface treatment installations, such as pickling, degreasing, phosphating installations and in particular installations for electrolytic coating of steel strips.

Une ligne d'électrozingage comprend une ou plusieurs cellules remplies d'électrolyte dans lesquelles la bande d'acier est plongée en vue de son revêtement sur une ou ses deux faces. La bande d'acier passe sur des rouleaux conducteurs cathodiques en partie immergées dans le bain d'électrolyte. Des anodes solubles de zinc sont immergées dans le bain d'électrolyte et disposées parallélement et à distance des rouleaux conducteurs. La bande de tôle guidée par les rouleaux conducteurs passe dans l'espace compris entre lesdits rouleaux et les anodes solubles de zinc.An electrogalvanizing line comprises one or more cells filled with electrolyte into which the steel strip is immersed for coating on one or both sides. The steel strip passes over cathode conductive rollers partially submerged in the electrolyte bath. Soluble zinc anodes are immersed in the electrolyte bath and arranged parallel and at a distance from the conductive rollers. The sheet metal strip guided by the conductive rollers passes through the space between said rollers and the soluble zinc anodes.

Un inconvénient important de cet agencement est qu'il entraîne un appauvrissement de la pellicule cathodique de l'électrolyte qui ne se renouvelle pas suffisamment dans l'espace compris entre les rouleaux conducteurs et les anodes de zinc. Cet appauvrissement entraîne une limitation de la densité du courant. L'électrolyte compris dans cet espace est saturé, en raison des frottements visqueux qui provoquent un entraînement de l'électrolyte, ce qui réduit notablement la vitesse relative de la bande par rapport à l'électrolyte. Il en résulte une baisse de la productivité de la ligne d'électrozingage. Pour remédier à ces inconvénients et augmenter la vitesse de la bande et la densité de courant, on connaît par le brevet européen EP 0 125 707, les brevets US 3 975 242, 4 500 400 et le brevet GB 2 147 009 des dispositifs d'injection à contre-courant par lesquels de l'électrolyte est injecté à contre-courant dans l'espace compris entre la bande et les anodes.An important drawback of this arrangement is that it causes a depletion of the cathode film of the electrolyte which does not renew itself sufficiently in the space between the conductive rollers and the zinc anodes. This depletion leads to a limitation of the current density. The electrolyte included in this space is saturated, due to the viscous friction which causes entrainment of the electrolyte, which notably reduces the relative speed of the strip with respect to the electrolyte. This results in a decrease in the productivity of the electrogalvanizing line. To remedy these drawbacks and increase the speed of the strip and the current density, European patent EP 0 125 707, US patents 3,975,242, 4,500,400 and GB patent 2,147,009 disclose counter-current injection by which electrolyte is injected against the current in the space between the strip and the anodes.

Quand ces dispositifs d'injection à contre-courant d'électrolyte sont disposés du côté où la bande montante émerge du bain d'électrolyte, le bec d'injection de ces dispositifs est placé au-dessous de la surface du bain d'électrolyte (US 4 500 400).When these electrolyte counter current injection devices are arranged on the side where the rising strip emerges from the electrolyte bath, the injection nozzle of these devices is placed below the surface of the electrolyte bath ( US 4,500,400).

L'injection d'électrolyte par les injecteurs connus présente un inconvénient important préjudiciable à la qualité du revêtement. En effet, ces injecteurs connus provoquent l'aspiration d'air dans l'espace compris entre la bande et les anodes. Ces injecteurs sont pourvus d'un bec d'injection plat de section rectangulaire dont l'extrêmité est soit fendue sur toute la longueur du bec, soit percée d'une multitude de trous permettant l'injection en lame ou en jets multiples de l'électrolyte. Le bec d'injection est disposé parallèlement et à faible distance de la bande, entre cette dernière et la tête des anodes. Le bec d'injection étant situé en dessous de la surface du bain et l'électrolyte sortant du bec d'injection à grande vitesse, il se forme à la surface du bain une dépression par effet de pompe. L'espace entre la bande et le bec étant relativement réduit, le débit d'arrivée d'électrolyte par les bords de la bande et du bec est inférieur au débit nécessaire pour alimenter cette dépression. La surface du bain d'électrolyte se creuse provoquant l'aspiration d'air dans l'espace compris entre la bande et les anodes.The injection of electrolyte by known injectors has a significant drawback detrimental to the quality of the coating. Indeed, these known injectors cause the suction of air into the space between the strip and the anodes. These injectors are provided with a flat injection nozzle of rectangular section, the end of which is either split over the entire length of the nozzle, or pierced with a multitude of holes allowing the injection in blade or in multiple jets of the electrolyte. The injection nozzle is arranged parallel and at a short distance from the strip, between the latter and the head of the anodes. The injection nozzle being located below the surface of the bath and the electrolyte leaving the injection nozzle at high speed, a vacuum is formed on the surface of the pump effect. The space between the strip and the spout being relatively small, the flow of electrolyte arrival through the edges of the strip and the spout is less than the flow required to feed this depression. The surface of the electrolyte bath becomes hollow, causing air to be drawn into the space between the strip and the anodes.

Une première solution préconisée par l'homme de l'art consiste à immerger plus profondément voir même complétement l'injecteur dans le bain d'électrolyte pour supprimer l'effet de pompe. Cette solution est difficilement acceptable car elle entraîne une réduction de la longueur utile des anodes. Elle contraint aussi à l'immersion des têtes d'anodes. Cette immersion ne permet plus aux opérateurs de contrôler visuellement le positionnement des anodes.A first solution recommended by a person skilled in the art consists in immersing more deeply or even completely the injector in the electrolyte bath to eliminate the pump effect. This solution is hardly acceptable because it results in a reduction in the useful length of the anodes. It also forces immersion of the anode heads. This immersion no longer allows operators to visually control the positioning of the anodes.

Une autre solution pour éviter l'appauvrissement de la pellicule cathodique de l'électrolyte consiste à élargir l'espace entre les anodes et le rouleau conducteur. Cette solution n'est pas satisfaisante dans la mesure où elle requiert plus d'énergie électrique.Another solution to avoid the depletion of the cathode film of the electrolyte is to widen the space between the anodes and the conductive roller. This solution is not satisfactory since it requires more electrical energy.

La présente invention a pour but de remédier aux inconvénients ci-dessus des injecteurs à contre-courant connus, sans avoir à modifier l'espace entre les anodes et le rouleaux conducteur, et permet d'injecter le débit nécessaire et suffisant d'électrolyte pour balayer entièrement l'espace compris entre les anodes et la bande d'acier conduite par le rouleau conducteur.The object of the present invention is to remedy the above drawbacks of known counter-current injectors, without having to modify the space between the anodes and the conductive roller, and makes it possible to inject the necessary and sufficient flow of electrolyte for completely sweep the space between the anodes and the steel strip led by the conductive roller.

Ce but est atteint selon la présente invention par un injecteur pourvu d'une multitude de tubes d'injection séparés les uns des autres de manière à permettre le passage et l'arrivée d'un débit suffisant d'électrolyte, tel qu'il est reveneliqué dans la présente revendication 1,This object is achieved according to the present invention by an injector provided with a multitude of injection tubes separated from each other so as to allow the passage and arrival of a sufficient flow of electrolyte, as it is as claimed in claim 1,

Les caractéristiques et avantages de l'invention apparaîtront à la lecture de la description qui suit donnée à titre d'exemple non limitatif et en référence aux figures annexées dans lesquelles :

  • - la figure 1 représente une vue partielle de face de l'injecteur (selon la flèche de la figure 2)
  • - la figure 2 est une coupe par 11-11 de la figure I.
The characteristics and advantages of the invention will appear on reading the following description given by way of nonlimiting example and with reference to the appended figures in which:
  • - Figure 1 shows a partial front view of the injector (according to the arrow in Figure 2)
  • - Figure 2 is a section through 11-11 of Figure I.

L'injecteur selon l'invention comprend au moins un conduit 1 d'arrivée d'électrolyte, le nombre et le diamètre des conduits 1 variant d'une part en fonction de la longueur de l'injecteur elle-même dépendante de la longueur du rouleau conducteur cathodique sur lequel passe la bande 14 et d'autre part en fonction du débit d'électrolyte requis pour assurer le balayage complet de l'espace compris entre les anodes solubles 15 et la bande 14 (Fig. 2). Ce conduit 1 débouche dans une chambre centrale 2, de section circulaire, de répartition du flux de l'électrolyte. La chambre centrale 2 s'étend sur toute la longueur de l'injecteur et est fermée à ses deux extrêmités par des bouchons 3. La chambre centrale 2 est pourvue d'une pluralité d'orifices 4 percés à travers la cloison intérieure 5 de l'injecteur.The injector according to the invention comprises at least one electrolyte inlet pipe 1, the number and the diameter of the pipes 1 varying on the one hand as a function of the length of the injector itself dependent on the length of the cathode conductive roller on which the strip 14 passes and on the other hand as a function of the electrolyte flow rate required to ensure complete scanning of the space between the soluble anodes 15 and the strip 14 (FIG. 2). This conduit 1 opens into a central chamber 2, of circular section, for distributing the flow of the electrolyte. The central chamber 2 extends over the entire length of the injector and is closed at its two ends by plugs 3. The central chamber 2 is provided with a plurality of orifices 4 drilled through the internal partition 5 of the 'injector.

Ces orifices 4 débouchent sur une chambre périphérique 6 d'homogénéisation du flux d'électrolyte, coaxiale à la chambre centrale 2 et l'enveloppant sur toute sa longueur. Les orifices 4 sont ménagés sur la partie inférieure de la chambre centrale 2 à proximité d'un barrage 7 de manière à diriger le flux d'électrolyte dans la chambre périphérique 6 dans un seul sens.These orifices 4 open onto a peripheral chamber 6 for homogenizing the flow of electrolyte, coaxial with the central chamber 2 and enveloping it over its entire length. The orifices 4 are formed on the lower part of the central chamber 2 near a barrier 7 so as to direct the flow of electrolyte in the peripheral chamber 6 in one direction.

Pour maintenir les deux chambres 2 et 6 coaxiales, des pions de centrage 8 sont insérés, autant que de besoin, dans la chambre périphérique 6.To keep the two chambers 2 and 6 coaxial, centering pins 8 are inserted, as necessary, in the peripheral chamber 6.

Le flux d'électrolyte est conduit par la chambre périphérique 6 dans un bec 9 pourvu d'une pluralité de forages 10. Ce bec 9, selon une caractéristique essentielle de l'invention, est prolongé par des tubes d'injection 11. En effet, contrairement aux injecteurs connus munis seulement d'un bec d'injection plat de section rectangulaire dont l'extrêmité est soit fendue sur toute la largeur ou soit percée de multiples trous, l'injecteur de la présente invention comprend une pluralité de tubes d'injection 11 lui donnant l'aspect d'une peigne. Ces tubes d'injection 11 assurent le libre passage entre eux de l'électrolyte du bain 12. Pour permettre l'arrivée suffisante de l'électrolyte du bain dans l'espace compris entre les rouleaux et les anodes, la largeur des têtes d'anodes 15 est diminuée.The electrolyte flow is conducted by the peripheral chamber 6 in a spout 9 provided with a plurality of holes 10. This spout 9, according to an essential characteristic of the invention, is extended by injection tubes 11. In fact , unlike known injectors provided only with a flat injection nozzle of rectangular section whose end is either split over the entire width or is pierced with multiple holes, the injector of the present invention comprises a plurality of tubes injection 11 giving it the appearance of a comb. These injection tubes 11 ensure the free passage between them of the electrolyte from the bath 12. To allow sufficient arrival of the electrolyte from the bath into the space between the rollers and the anodes, the width of the heads of anodes 15 is decreased.

L'extrêmité de chaque tube d'injection est, selon une variante préférentielle de réalisation, aplatie en forme dite de "queue de carpe" afin d'assurer une injection plus régulière de l'électrolyte.According to a preferred embodiment, the end of each injection tube is flattened in the form of a "carp tail" shape in order to ensure a more regular injection of the electrolyte.

La section totale des jeux 13 de passage entre les tubes 11 est telle qu'elle entraîne une diminution suffisante de la dépression apparaissant entre la bande 14 et l'injecteur et supprime les aspirations indésirables d'air entre les anodes solubles 15 et la bande 14. De préférence les tubes d'injection 11 sont conçus de manière à pouvoir être démontés du bec 9.The total section of the clearance 13 passing between the tubes 11 is such that it causes a sufficient reduction in the vacuum appearing between the strip 14 and the injector and eliminates the undesired air aspirations between the soluble anodes 15 and the strip 14 Preferably, the injection tubes 11 are designed so that they can be removed from the spout 9.

Claims (4)

1. Counterflow fluid injector composed of a fluid intake conduit, of a chamber and of an injection nozzle, characterized in that it comprises:
- at least one fluid intake conduit (1),
- a central chamber (2) for distributing the flow of fluid, extending over the entire length of the injector, the intake conduit (1) opening into the said central chamber (2) equipped with an internal partition (5),
- a plurality of orifices (4) which are made through the internal partition (5) of the injector in the lower part of the said central chamber (2) and which open into a peripheral chamber (6) for homogenizing the flow of fluid, which is coaxial relative to the central chamber (2) and surrounds it over its entire length and in which as many centring studs (8) as necessary are inserted,
- a barrier (7) arranged in the peripheral chamber (6) in order to direct the flow of fluid into a nozzle (9) equipped with a plurality of ducts (10),
- a plurality of injection pipes (11) extending the ducts (10) and allowing the free passage of the electrolyte of the bath (12) between the said pipes (11).
2. Counterflow fluid injector according to Claim 1, characterized in that the end of the injection pipes (11) is of circular cross-section.
3. Counterflow fluid injector according to Claim 1, characterized in that the end of the injection pipes (11) is of flattened cross-section.
4. Electroplating line cell comprising at least one injector according to Claims 1, 2 or 3, guide rolls and soluble anodes (15), characterized in that the width of the heads of the anodes (15) is reduced.
EP87470008A 1986-05-05 1987-05-04 Counterflow electrolyte injector Expired - Lifetime EP0246175B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8606601A FR2607153B1 (en) 1986-05-05 1986-05-05 COUNTER-CURRENT ELECTROLYTE INJECTOR FOR A CONTINUOUS SURFACE TREATMENT SYSTEM
FR8606601 1986-05-05

Publications (2)

Publication Number Publication Date
EP0246175A1 EP0246175A1 (en) 1987-11-19
EP0246175B1 true EP0246175B1 (en) 1990-01-24

Family

ID=9335023

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87470008A Expired - Lifetime EP0246175B1 (en) 1986-05-05 1987-05-04 Counterflow electrolyte injector

Country Status (7)

Country Link
US (1) US4806222A (en)
EP (1) EP0246175B1 (en)
JP (1) JPS6324096A (en)
KR (1) KR940011009B1 (en)
CA (1) CA1318636C (en)
DE (1) DE3761491D1 (en)
FR (1) FR2607153B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2683868B1 (en) * 1991-11-15 1994-01-14 Onera INJECTOR AND INSTALLATION EQUIPPED WITH SUCH AN INJECTOR.
US7521945B2 (en) * 2006-02-17 2009-04-21 Voelker Sensors Inc. Oil monitoring system
DE10140934A1 (en) * 2001-08-10 2003-02-20 Gramm Gmbh & Co Kg Device for galvanically surface treating workpieces comprises a process chamber having feed openings for introducing process liquid and waste openings for removing process liquid arranged in groups at a distance from the surface
KR100572116B1 (en) * 2001-12-22 2006-04-18 주식회사 포스코 Apparatus for injecting of coating solution

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975242A (en) * 1972-11-28 1976-08-17 Nippon Steel Corporation Horizontal rectilinear type metal-electroplating method
DE3432821A1 (en) * 1983-09-07 1985-03-21 Mitsubishi Jukogyo K.K., Tokio/Tokyo METHOD AND DEVICE FOR CONTINUOUS GALVANIC ALLOY DEPOSITION
JPS6082700A (en) * 1983-10-07 1985-05-10 Kawasaki Steel Corp Counter flow device for radial cell type plating tank
JPS62156296A (en) * 1985-12-27 1987-07-11 Nippon Kokan Kk <Nkk> Continuous electroplating device for metallic strip

Also Published As

Publication number Publication date
FR2607153B1 (en) 1989-04-07
FR2607153A1 (en) 1988-05-27
DE3761491D1 (en) 1990-03-01
EP0246175A1 (en) 1987-11-19
KR880014139A (en) 1988-12-23
CA1318636C (en) 1993-06-01
US4806222A (en) 1989-02-21
KR940011009B1 (en) 1994-11-22
JPS6324096A (en) 1988-02-01

Similar Documents

Publication Publication Date Title
EP0663461B1 (en) Apparatus for electrochemically treating in particular selectively a conducting workpiece
EP0246175B1 (en) Counterflow electrolyte injector
DE2324834B1 (en) Device for continuous selective strip electroplating
FR2551467A1 (en) METHOD AND APPARATUS FOR PERFORMING A CONTINUOUS ELECTROLYTIC DEPOSITION OF ALLOYS
CA1098862A (en) Zinc regeneration process and device
US3990959A (en) Process for electro-chemical machining
EP0011547B1 (en) Process and apparatus for producing a zinc plate or strip lightly coated on one or both sides, and product obtained by this process
BE1020476A3 (en) NOZZLE OF THICKNESS CONTROL OF THICKNESS AND COATING DISTRIBUTION WITH EXCELLENT PRESSURE UNIFORMITY.
JPS6082700A (en) Counter flow device for radial cell type plating tank
EP1238133A1 (en) Device for treating sheet-like material using pressurized water jets
FR2473559A1 (en) APPARATUS FOR THE ELECTROLYTIC VENEERING OF BAND MATERIAL WITHOUT CURRENT DISPERSION
LU85086A1 (en) DEVICE FOR THE ELECTROLYTIC DEPOSITION OF A LAYER OF A COVERING METAL ON A METAL STRIP
FR2481177A1 (en) CUTTING GUIDE BODY FOR ELECTRO-EROSION MACHINES
CN202610379U (en) Continuous electrolytic polishing device for nickel tungsten alloy strip
CN109957783B (en) High-efficiency linear vacuum coating assembly line for workpiece surface coating
LU86550A1 (en) RADIAL CELL DEVICE FOR ELECTROLYTIC PLATING
LU86119A1 (en) ELECTROLYTIC DEPOSITION DEVICE AND METHOD FOR ITS IMPLEMENTATION
BE1006193A3 (en) Injection and injection system equipped with tel.
CN208545512U (en) A kind of Multi-functional Electroplating anode nozzle
CN217922369U (en) Cleaning device for electroplating steel strip and electroplating equipment
CN218521355U (en) Electroplating equipment with V-shaped structure
CN219326859U (en) Novel airtight and environment-improved electroplating equipment
CN210230472U (en) Diaphragm spring device that oils
CA2510185C (en) Method and device for stripping wires and/or metal strips
EP0470913A1 (en) Method for controlling thickness of metallic continuous casting strip on rolls

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE GB IT NL SE

17P Request for examination filed

Effective date: 19880502

17Q First examination report despatched

Effective date: 19890704

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE GB IT NL SE

REF Corresponds to:

Ref document number: 3761491

Country of ref document: DE

Date of ref document: 19900301

ITF It: translation for a ep patent filed

Owner name: MANZONI & MANZONI

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
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
ITTA It: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 87470008.1

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: GB

Payment date: 20040427

Year of fee payment: 18

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

Ref country code: NL

Payment date: 20040429

Year of fee payment: 18

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

Ref country code: SE

Payment date: 20040504

Year of fee payment: 18

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

Ref country code: DE

Payment date: 20040510

Year of fee payment: 18

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

Ref country code: BE

Payment date: 20040608

Year of fee payment: 18

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050504

Ref country code: GB

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

Effective date: 20050504

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

Ref country code: SE

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

Effective date: 20050505

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

Ref country code: BE

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

Effective date: 20050531

BERE Be: lapsed

Owner name: SOC. LORRAINE DE LAMINAGE CONTINU *SOLLAC

Effective date: 20050531

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

Ref country code: NL

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

Effective date: 20051201

Ref country code: DE

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

Effective date: 20051201

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20050504

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20051201

BERE Be: lapsed

Owner name: SOC. LORRAINE DE LAMINAGE CONTINU *SOLLAC

Effective date: 20050531