EP0264510A1 - Verfahren und Vorrichtung zur elektrolytischen Behandlung von metallischen Bändern - Google Patents

Verfahren und Vorrichtung zur elektrolytischen Behandlung von metallischen Bändern Download PDF

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Publication number
EP0264510A1
EP0264510A1 EP86402354A EP86402354A EP0264510A1 EP 0264510 A1 EP0264510 A1 EP 0264510A1 EP 86402354 A EP86402354 A EP 86402354A EP 86402354 A EP86402354 A EP 86402354A EP 0264510 A1 EP0264510 A1 EP 0264510A1
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EP
European Patent Office
Prior art keywords
strip
roller
electrode
rollers
treatment
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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.)
Granted
Application number
EP86402354A
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English (en)
French (fr)
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EP0264510B1 (de
Inventor
Pierre-Marie Damiron
Jean-Luc Legoupil
Pascal Menage
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Clecim SAS
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Clecim SAS
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Filing date
Publication date
Application filed by Clecim SAS filed Critical Clecim SAS
Priority to AT86402354T priority Critical patent/ATE45598T1/de
Priority to EP86402354A priority patent/EP0264510B1/de
Priority to DE8686402354T priority patent/DE3665080D1/de
Priority to US06/948,196 priority patent/US4762599A/en
Publication of EP0264510A1 publication Critical patent/EP0264510A1/de
Application granted granted Critical
Publication of EP0264510B1 publication Critical patent/EP0264510B1/de
Expired legal-status Critical Current

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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

Definitions

  • the subject of the invention is a process for the electrolytic surface treatment of a metal strip moving at high speed, having the effect of peeling off or dissolving a film from the surface of the strip, for example for degreasing, pickling or decrypting. and also covers the treatment installations for implementing the method.
  • the air gap between the strip and the electrode, crossed by the electric current must be as small as possible, but in the event of a traction or flatness defect of the strip, the latter may come into rubbing contact with the surface of the electrode opposite, which may cause deterioration of the strip and / or of the electrodes.
  • the latter consists of a roller placed in contact with the strip.
  • the roller is formed on its periphery by a conductive wall covered of a discontinuous insulating coating having a constant thickness and in which recesses are provided so that the wall of the roller is formed over its entire surface of projecting support parts of constant height, separated from each other by spaces leaving appear the conductive wall of the roller; the electrolytic liquid is injected into the spaces thus formed to produce electrolysis between the strip and the conductive wall of the roller which are brought to different potentials.
  • the roller electrode is always placed outside the electrolytic bath.
  • the liquid is brought directly from the bath to the roller-electrode by the previously immersed strip or else by a transport roller bathing in the bath and placed in contact with the roller-electrode.
  • the strip passes over rollers offset in height and defining a zig-zag path, the liquid being injected into the dihedral-shaped spaces formed between the upstream strand of the strip and each roller.
  • the running speed is relatively limited because, from a certain speed, there can be a lateral floating of the strip due to the so-called aquaplanning effect which makes it difficult to guide the strip and disturbs the transverse homogeneity of the treatment.
  • the object of the invention is to remedy such drawbacks.
  • the installation for processing metal strips according to the invention is therefore of the type comprising an electrolytic liquid bath and means for controlling the running of the strip on at least one roller-electrode mounted rotatably about an axis perpendicular to the running direction and limited by a conductive side wall partially covered with an insulating coating consisting of projecting support parts of constant height separated by recesses the bottom of which is constituted by the conductive wall and capable of being filled with electrolytic liquid coming from the bath and introduced between the strip and the roller and means for controlling the passage of an electric current between the strip and the conductive wall of the roller.
  • the installation comprises, for the treatment of the same face of the strip, at least two electrode rollers entirely submerged inside the bath of electrolytic liquid and the insulating coating of which consists of a series spaced support rings, centered in planes perpendicular to the axis of the roller and between which are annular treatment spaces, the bottom of which is formed by the conductive wall, said rings being axially offset from one roller to the other. 'other so that, in the direction of travel of the strip, the areas treated between the support rings of a roller correspond to the support areas on the rings of a next roller and vice versa.
  • the treatment is therefore carried out inside the bath itself and it follows that it is easy, if desired, to treat the two faces of the strip in the same operation and that '' in addition, a large flow of liquid circulates in the annular treatment spaces, which is particularly advantageous in the case of a pickling treatment, for rapidly removing the detached particles.
  • At least part of the gas produced by the electrolysis is entrained and maintained in the current of liquid circulating between the strip and the roller and there are different means of adjustment. , as a function of the running speed of the proportion of entrained gas, so as to make the liquid compressible enough to prevent the strip from coming off at this speed.
  • the aquaplanning effect normally occurring at high speeds can be perfectly controlled and there is no longer any fear of the band floating, the latter remaining applied to the roller at a constant distance equal to l thickness of the support rings, even at very high speed, thanks to the adjustment of the compressibility of the liquid.
  • At least one of the rollers defining the running circuit can therefore be a simple submerged or not submerged deflection roller if the number and the locations of the submerged electrode rollers are determined so as to prevent the strip from floating.
  • the treatment of each face of the strip is carried out by spaced parallel ribbons passing alternately over the annular spaces of a roll and then of the other.
  • the offset of the rings can indeed be adjusted so that the ribbons formed on two successive rollers are contiguous, which allows the treatment of a complete face by passing over two rollers.
  • the treatment is carried out homogeneously in the transverse direction. It is also not necessary to enslave the rollers in angular position relative to each other nor to multiply their number to obtain a homogeneous treatment in the longitudinal direction and the longitudinal sliding which can occur in particular during acceleration and braking phases also do not risk affecting the homogeneity of the treatment.
  • the installation comprises an even number of rollers, at least one side of the strip passing over two neighboring rollers.
  • rollers can define, for example, an inverted T scrolling circuit delimited by two pairs of spaced apart electrode rollers placed at two different levels, each face of the strip being treated by a pair of electrode rollers.
  • the installation comprises an odd number of submerged electrode rollers defining a zig-zag scrolling circuit, the strip being applied alternately on one side and then on the other.
  • two neighboring electrode rollers are connected respectively to two terminals of an electrical supply circuit placed at different potentials, so that the electric current is transmitted by the strip itself between said neighboring rollers.
  • the electrical supply circuit may also be useful for the electrical supply circuit to include an inverter capable of periodically changing the polarity of the rollers.
  • each submerged electrode roll is covered, on the part of its periphery not covered by the strip, by a cover in the form of a circular sector parallel to the external wall of the roll and kept spaced therefrom. 'a short distance.
  • each roller is associated with an auxiliary electrode placed upstream of the roller in the direction of travel of the strip spaced therefrom and / or the roller by a sufficient distance to avoid the risks of friction but for producing however the release of a certain quantity of gas entrained with the liquid between the strip and the roller so as to regulate the compressibility of the liquid in this space.
  • This auxiliary electrode can be constituted by a planar electrode arranged parallel to the strip at a short distance from the latter, in the approximation zone, and placed at the same polarity as the roller.
  • This electrode can be associated with the cover described above so as to combine their effects.
  • the cover can itself constitute an auxiliary electrode, it is then made of a conductive metal, at least on its face facing the roller, and connected to the electrical circuit so as to be to a polarity opposite to that of the roller with which it is associated.
  • the cover is mounted to slide radially and associated with means for adjusting its distance from the roller.
  • the installation according to the invention makes it possible to carry out degreasing, pickling or electroplating and, in general, any treatment for removing a film. on one or two sides of the strip, at very high running speeds of up to 1500 m / min.
  • a first embodiment of the installation which comprises a bath of electrolytic liquid 1 contained in a tank 10 and in which a metal strip 2 runs at high speed.
  • the external circuit comprising, for example, a coil from which the strip is unwound and rewinding means placed downstream of the tank, is not shown in the drawings.
  • the strip running circuit 2 in the bath 1 is limited, outside, by deflection rollers 3 and inside the bath, according to one of the essential characteristics of the invention, by rollers - electrodes 4.
  • the electrode rollers 4 and, where appropriate, other parts of the installation are connected to an electrical supply circuit 6 so that, on each roller, there is a determined potential difference between the face of the strip 2 wound on the roller and the external face 47 of the roller placed opposite.
  • the strip passes at the entry and the exit of the installation on conductive rollers connected to the ground, not shown, in the drawing.
  • the method of electrical connection depends on the arrangement of the electrode rollers and the path of the strip as well as on the treatment process which it is desired to carry out. This is why, in FIG. 1, the electrical circuit 6 has only been shown diagrammatically, FIGS. 6 to 9 indicating, by way of example, particularly advantageous connection methods.
  • the running circuit has an inverted T shape delimited by two pairs of roller-electrodes (41, 44) and (42, 43) immersed in the bath at two different levels.
  • the rollers 41 and 44 placed at the upper level are brought closer to each other while the rollers 42 and 43 placed at the lower level are moved apart.
  • the inverted T arrangement is moreover not the only one that could be adopted and an inverted U circuit could, for example, also be produced by passing the strip over rollers placed at different levels.
  • the submerged rollers are mounted on shafts which cross the side walls of the tank, maintaining the seal, bearings and power supply brushes that can be placed outside the tank. If necessary, the rollers can be driven at a speed synchronized with the running speed of the strip.
  • Figs. 2 and 3 show a roll electrode respectively in axial section and in cross section.
  • Each roller electrode is constituted by a cylindrical wall 45 carried at its ends by two axes 46 housed in bearings not shown and defining an axis of rotation 40.
  • the cylindrical wall 45 is made entirely or else covered by a conductive metal and can be conventionally connected, by brushes, to an electrical circuit 6 so that its external cylindrical face 47 can be brought to a certain electrical potential.
  • the roller is covered on its periphery with a series of rings 5 centered in planes perpendicular to the axis 40 and spaced from one another so as to form between them circular spaces 51, the bottom of which is formed by the outer face 47 of the roller.
  • the strip 2 is wound on an angular sector of the periphery of the roller by applying to the top of the rings 5, the latter having the same height so as to maintain between the strip 2 and the conductive face 47 of the roller an air gap constant of width e comprised, for example, between 3 and 30 mm.
  • each roller electrode 4 the treatment is carried out only on spaced apart ribbons corresponding to the spaces between the rings, the parts bearing on the rings not being treated.
  • the particles thus detached are immediately discharged into the bath thanks to the circulation of the electrolytic liquid which, according to an essential characteristic of the invention, is established in the spaces 51 between the rings 5.
  • the electrolytic liquid is easily entrained, according to arrow 11, by the running of the strip 2 and the rotation of the roller, in the zone 12 for bringing the strip together form a dihedral limited on one side by the strand upstream of the strip and on the other by the circular wall of the roller, then it circulates in the spaces 51 between the rings to be ejected tangentially, according to the arrows 13, in the zone 14 away from the strip.
  • the electrolytic liquid which, according to an essential characteristic of the invention, is established in the spaces 51 between the rings 5.
  • the electrolytic liquid 1 is entrained in a space whose width gradually decreases to the height e of the rings 5. Contrary to what one might have expected, according to another essential characteristic of the invention, this tightening of the passage space of the electrolytic liquid does not cause the strip to come off under the effect of the resulting increase in pressure.
  • This proportion of bubbles 15 makes the liquid 1 compressible which, in this way, can be discharged laterally, according to the arrows A in FIG. 4, towards the spaces 51, when the face 20 of the strip approaches the external face 50 of the rings; if the proportion of bubbles contained in the fluid makes it possible to make the latter fairly compressible, it can be achieved that there is no longer, between the strip 2 and the rings 5, any residual film capable of causing the phenomenon of "aquaplanning", which makes it possible to carry out the treatment at very high speed without fear of the drawbacks mentioned above.
  • the quantity of gas entrained in the liquid can be adjusted by various means making it possible to regulate the proportion of bubbles in the liquid by keeping the running speed and / or the intensity of the electrolysis current constant.
  • a first regularization means is constituted by a cover 7 in the form of a circular sector centered on the axis 40 of the roller, surrounding the latter on the sector not covered by the metal strip 2 and spaced from the external face 50 of the insulating rings of a distance (e ⁇ ) that can be adjusted.
  • the cover 7 is slidably mounted in a radial direction on a support 71 comprising a means 72 such as a mechanical, pneumatic or hydraulic cylinder, making it possible to adjust the distance of the cover 7 relative to the axis 40 and by consequently the width (e ⁇ ) between the internal face of the cover and the external face 50 of the rings 5.
  • a means 72 such as a mechanical, pneumatic or hydraulic cylinder
  • the relatively heavy particles detached from the strip are tangentially evacuated according to the arrows 13 but the gas bubbles, light and uniformly distributed in the electrolyte, are derived partly by the cover 7 according to the arrows 15 and are recycled in the zone 12 for bringing the strip 2 closer together. It is thus possible, by adjusting the position of the cover 7, to control the recycling of the bubbles in the upstream zone 12 and, depending of the quantity of gas produced by electrolysis, achieve a balance in the proportion of gas so as to give the fluid contained in the spaces 51 the desired degree of compressibility.
  • Another arrangement according to the invention also makes it possible to increase the proportion of bubbles produced.
  • flat electrodes 8 in the form of a rule extending over at least part of the width of the strip are placed in the zone 12 of approximation, preferably along the edge 73 of the cover 7 facing the upstream strand. in the direction of travel and are connected to the electrical circuit 6 so as to be at a potential different from that of the strip.
  • the electrodes 8, shown on the left side of Fig. 1, are spaced from the strip by a distance large enough to avoid the risk of friction contact, for example in the event of a traction or flatness defect.
  • This distance may not be reduced enough to achieve a pickling effect but nevertheless allows the formation on the strip and on the electrodes 8 of a certain amount of bubbles which are entrained by the liquid towards the roller-electrode and therefore come add to the bubbles formed on the side opposite the pickling roller.
  • At least the face of the cover 7 facing the roller must be made of conductive metal and be connected to the electrical circuit 6 so as to be at a potential different from that of the roll electrode with which the cover is associated.
  • An electrolysis effect then occurs between the cover 7 and the roller-electrode, with the formation of bubbles which are entrained by the roller and, as before, are added to the bubbles formed by the electrolysis between the strip and the roller. .
  • the electrolytic currents can be emitted or picked up only at from the electrode rollers, apart from the soil rollers placed upstream and downstream of the electrolytic treatment section.
  • the nature and the quantity of gas formed by electrolysis depend, on each roller-electrode, on the relative polarities of the strip, the roller and the auxiliary electrodes and, according to another characteristic of the invention, it is advantageous to provide on the supply circuit 6 one or more inverters making it possible to periodically reverse the direction of the electrolysis current between each roller and the opposite face of the strip.
  • the electrode rollers are associated by pairs of neighboring rollers, 41 and 42 on one side, 43 and 44 on the other, the two rollers of each pair being connected to the two opposite terminals 61, 62, 61 ⁇ , 62 ⁇ of a generator, respectively 60, 60 ⁇ , via an inverter 64, 64 ⁇ .
  • one roller operates as an anode and the other as a cathode, the face of the strip in contact with the roller being of opposite polarity.
  • the electric current flows from the conductive face 47 of the electrode roller 41 to the part of the strip 2 wound on the roller, passing through the electrolytic liquid, then flows in the short strand 21 of the strip between the rollers 41 and 42 and again crosses the space filled with electrolyte comprised between the part wound on the roll 42 of the strip 2 which then operates as an anode, and the conductive face of the roll 42 connected to the terminal 61 which works as a cathode.
  • the intensity of the electrolysis current can be adjusted by acting on a variable resistor 63 or else directly on the voltage delivered by the generator 60.
  • rollers 43 and 44 are connected in the same way to the generator 60 ⁇ .
  • one side of the strip is treated by the rollers 41 and 44 and the other side by the rollers 42 and 43 and the rollers treating the same side operate either as an anode or as a cathode so that the assembly of each face is subjected to the same gas evolution. If it is desired that the two faces of the strip are subjected to the same treatment, it is possible to connect the rollers treating the same face on opposite polarities and / or periodically reverse the direction of the current by means of inverters 64, 64 ⁇ , in the manner indicated below.
  • Each roller electrode is associated with a conductive cover and, according to another advantageous characteristic, the covers 7 can be supplied with a voltage which can be adjusted independently of those applied to the rollers.
  • the covers 71 and 72 associated with the rollers 41, 42 are connected to the two terminals of a generator 65, the current passing from one to the other by the strand 21. It is the same on the other side of the installation.
  • the intensity of the current can be adjusted by a variable resistor 66 or by acting on the voltage delivered by the generator 65.
  • the intensities of the electrolysis currents can be adjusted independently, making it possible, respectively, to carry out the pickling process and to control the strip release effect by adjusting the quantity of bubbles contained in the circulating liquid, which can also be adjusted by adjusting the position of the cover. It can therefore be seen that there are a large number of means of action, the effects of which can be combined so that, without changing the efficiency of the pickling process, it is possible to adjust, on each roller, the amount of gas in circulation to control the effect of "aquaplanning".
  • the supply circuits of the conductive hoods are also provided with reversers, the operation of which can be synchronized with that of the main supply circuit of the electrode rollers.
  • each roller is associated with a planar electrode 8 for producing an additional quantity of gas placed itself on the edge of a cover for adjusting the flow rate of reinjected gas.
  • Fig. 7 further shows another type of connection using several generators whose terminals are connected to rollers forming part of different pairs. Also advantageously, the auxiliary electrodes can be simply connected together to integrate them into the flow of electric current, a variable resistor making it possible to adjust the current passing through the covers for controlling the effect of "aquaplanning".
  • the supply circuit comprises two generators each connected to a set of three rollers and the auxiliary electrodes constituted, for example, for each roller, by a conductive cover are simply connected to each other by a common circuit comprising for each auxiliary electrode, a variable intensity adjustment resistance.
  • part of the current coming from the generator 6 passes on the associated cover 72 and returns through the corresponding covers 71 on the rollers 41 and 43 while most of the current passes from the roller 42 on the corresponding face of the strip and on the other face on the rollers 41 and 43 by causing the pickling treatment.
  • Fig. 9 there is shown an installation having a larger number of rollers with another connection mode, each auxiliary electrode 8 being connected to the supply circuit of the associated roller by means of a variable resistor making it possible to adjust the amount of gas added, without modifying the value of the electrolysis current operating the treatment.
  • the last roller 49 in the series is not an electrode roller but a simple deflection roller.
  • the electrode rollers are connected by pairs of neighboring rollers, respectively 41 and 42, 43 and 44, etc ... to separate generators 60, 60 ⁇ , etc ... whose polarities are reversed from one pair to the next of so that two neighboring rollers connected to different generators, such as 42 and 43, 44 and 45, etc. are at the same polarity.
  • each generator such as 60, 60 ⁇ , etc. is connected to the corresponding roller electrodes via an inverter.
  • each roll-electrode with circular rings treating one half-face at a time, by spaced ribbons it is possible, by periodically reversing the direction of the current, to release on each half-face oxygen or l hydrogen in a proportion corresponding to the time during which the face of the strip is, respectively, anode or cathode.
  • This arrangement will also generate pulsed currents in the band so as to better carry out the cleaning operation.
  • the frequency of reversal of the direction of the current will therefore depend on the proportions of gas that we want to produce and will be controlled by the running speed Of the band. This frequency will be much higher than that conventionally used to avoid fouling of the electrodes.
  • a duration (t A ) of anode roller operating time is followed by a duration (t c ) cathode operation of this same roller, the sum of these two times being exactly equal to the time (t) of stay of the strip on the electrode roll which, by definition, is equal to the quotient of the length (L) of strip wound around the electrode roll, by the speed (V) of travel of the strip.
  • This sequence composed of an anode operating time (t A ) and a cathode operating time (t c ) of the electrode roller is repeated so as to constitute a continuous and alternating sequence.
  • the operating times (t A ) and (t c ) are equal, R being equal to 1. This gives the same value of the ratio of the volumes of hydrogen to each roller electrode. and oxygen released on the strip, which allows for example in the case of FIG. 6, to carry out a homogeneous and identical treatment for the two faces of the strip.
  • the time t A of anode operation is equal to the residence time of the strip on each roller-electrode, that is to say L / V and the time t c of cathode operation is equal to the time of transfer of the strip between two given electrode rolls, that is to say the quotient L ⁇ / V of the length L ⁇ of strip separating these two electrode rolls, by the speed V of travel of the strip.
  • the length L ⁇ of transfer taken into account will be equal to the length of strip separating two successive rolls of treatment of the same half-face, such as: - 41 to 43 for one half of the upper face and 45 to 47 for the other half; - 42 to 44 for one half of the underside and 46 to 48 for the other half;
  • This arrangement will also make it possible to carry out a homogeneous and identical treatment of the two faces of the strip.
  • the direction and intensity of the currents at each roller electrode will be determined according to the conditions imposed by the treatment process chosen and will obviously have to be compatible from one roller to another, so that the flow of current is electrically possible, the density of the electrolytic current can be between 1000 and 20000 A / m2.
  • all the rollers placed in the bath constitute roller-electrodes making it possible, as we have seen, to prevent the strip from coming off.
  • a simple deflection roller on the scrolling circuit, as in the case of FIG. 10, the strip being sufficiently maintained by the other electrode rollers to avoid any floating.
  • a simple deflection roller such as for example the central roller 43 in the case of FIG. 8, makes it possible to pass the strip over an even number of roller-electrodes and to carry out the treatment under conditions identical to those of a circuit and T, as in the case of FIG. 6.
  • rollers 42, 45 and 47 could be simple deflection rollers, one face of the strip being treated on the rollers 41 and 43, and the other face on the rollers 44 and 46.
  • the invention lends itself to multiple combinations and that by varying the number of rollers and their arrangement, the spacing of the covers, the electrical supply of the auxiliary electrodes or else the time during which each roller operates in anode or cathode, it is possible to control the nature and the flow rate of the gaseous evolution produced on each face of the strip and to adapt the effectiveness of the treatment as a function of the state of each face, according to the needs specific to each installation.

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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)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Electrolytic Production Of Metals (AREA)
EP86402354A 1986-10-20 1986-10-20 Verfahren und Vorrichtung zur elektrolytischen Behandlung von metallischen Bändern Expired EP0264510B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT86402354T ATE45598T1 (de) 1986-10-20 1986-10-20 Verfahren und vorrichtung zur elektrolytischen behandlung von metallischen baendern.
EP86402354A EP0264510B1 (de) 1986-10-20 1986-10-20 Verfahren und Vorrichtung zur elektrolytischen Behandlung von metallischen Bändern
DE8686402354T DE3665080D1 (en) 1986-10-20 1986-10-20 Process and apparatus for electrolytically treating metal strips
US06/948,196 US4762599A (en) 1986-10-20 1986-12-31 Process and plant for an electrolytic treatment of a metal strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86402354A EP0264510B1 (de) 1986-10-20 1986-10-20 Verfahren und Vorrichtung zur elektrolytischen Behandlung von metallischen Bändern

Publications (2)

Publication Number Publication Date
EP0264510A1 true EP0264510A1 (de) 1988-04-27
EP0264510B1 EP0264510B1 (de) 1989-08-16

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EP86402354A Expired EP0264510B1 (de) 1986-10-20 1986-10-20 Verfahren und Vorrichtung zur elektrolytischen Behandlung von metallischen Bändern

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US (1) US4762599A (de)
EP (1) EP0264510B1 (de)
AT (1) ATE45598T1 (de)
DE (1) DE3665080D1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5804052A (en) * 1994-05-26 1998-09-08 Atotech Deutschland Gmbh Method and device for continuous uniform electrolytic metallizing or etching
WO2009065557A1 (de) * 2007-11-19 2009-05-28 Rena Sondermaschinen Gmbh Vorrichtung und verfahren zum elektrischen kontaktieren von gut in elektrolytischen durchlaufanlagen
WO2009089820A3 (de) * 2008-01-16 2009-10-15 Manfred Danziger Bandgalvanikanlage zur elektrochemischen verstärkung einer elektrisch leitfähigen äusseren schicht eines bandes

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4417551C2 (de) * 1994-05-19 1996-04-04 Atotech Deutschland Gmbh Elektrolytisches Verfahren zum präzisen Behandeln von Leiterplatten und Vorrichtung zur Durchführung des Verfahrens
US9765444B2 (en) * 2014-12-03 2017-09-19 Metal Industries Research & Development Centre Continuous electrochemical machining apparatus
CN106884201B (zh) * 2017-03-20 2018-06-12 建滔（连州）铜箔有限公司 一种用于无铅焊电解铜箔的粗化处理工艺及设备
KR102409364B1 (ko) * 2017-08-18 2022-06-17 한국전자통신연구원 전극 구조체 제조 장치
CN111519240B (zh) * 2020-04-26 2022-04-15 浙江龙盛薄板有限公司 一种冷轧钢带的安全清洗线

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113094A (en) * 1959-11-23 1963-12-03 Gen Electric Electrodeposition cell
DE2165329A1 (de) * 1971-01-04 1972-07-27 Battelle Memorial Institute Verfahren zum schnellen galvanischen Niederschlagen von Nickel
US3900383A (en) * 1974-07-24 1975-08-19 Nat Steel Corp Apparatus for electroplating
US4430166A (en) * 1982-09-27 1984-02-07 Inland Steel Company Method and apparatus for electro-treating a metal strip

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374159A (en) * 1965-02-09 1968-03-19 Bethlehem Steel Corp Marking of steel strip electrolytically using electrolyte adhering to the strip
US3420760A (en) * 1965-04-30 1969-01-07 Gen Dynamics Corp Process for descaling steel strip in an aqueous organic chelating bath using alternating current
US4441975A (en) * 1983-02-17 1984-04-10 Inland Steel Company Electrotreating apparatus with electrode roll

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113094A (en) * 1959-11-23 1963-12-03 Gen Electric Electrodeposition cell
DE2165329A1 (de) * 1971-01-04 1972-07-27 Battelle Memorial Institute Verfahren zum schnellen galvanischen Niederschlagen von Nickel
US3900383A (en) * 1974-07-24 1975-08-19 Nat Steel Corp Apparatus for electroplating
US4430166A (en) * 1982-09-27 1984-02-07 Inland Steel Company Method and apparatus for electro-treating a metal strip

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5804052A (en) * 1994-05-26 1998-09-08 Atotech Deutschland Gmbh Method and device for continuous uniform electrolytic metallizing or etching
WO2009065557A1 (de) * 2007-11-19 2009-05-28 Rena Sondermaschinen Gmbh Vorrichtung und verfahren zum elektrischen kontaktieren von gut in elektrolytischen durchlaufanlagen
WO2009089820A3 (de) * 2008-01-16 2009-10-15 Manfred Danziger Bandgalvanikanlage zur elektrochemischen verstärkung einer elektrisch leitfähigen äusseren schicht eines bandes

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EP0264510B1 (de) 1989-08-16
ATE45598T1 (de) 1989-09-15
DE3665080D1 (en) 1989-09-21

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