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WO1999010563A2 - Procede et dispositif pour le traitement electrolytique simultane de plusieurs pieces avec economie d'energie - Google Patents

Procede et dispositif pour le traitement electrolytique simultane de plusieurs pieces avec economie d'energie Download PDF

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Publication number
WO1999010563A2
WO1999010563A2 PCT/DE1998/002501 DE9802501W WO9910563A2 WO 1999010563 A2 WO1999010563 A2 WO 1999010563A2 DE 9802501 W DE9802501 W DE 9802501W WO 9910563 A2 WO9910563 A2 WO 9910563A2
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WO
WIPO (PCT)
Prior art keywords
current
workpieces
sub
contact
cells
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.)
Ceased
Application number
PCT/DE1998/002501
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German (de)
English (en)
Other versions
WO1999010563A3 (fr
Inventor
Helmut Stiegler
Jens Maschmeyer
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.)
Atotech Deutschland GmbH and Co KG
Original Assignee
Atotech Deutschland GmbH and Co KG
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 Atotech Deutschland GmbH and Co KG filed Critical Atotech Deutschland GmbH and Co KG
Priority to EP98951217A priority Critical patent/EP1015671A2/fr
Priority to JP2000507865A priority patent/JP2001514329A/ja
Publication of WO1999010563A2 publication Critical patent/WO1999010563A2/fr
Publication of WO1999010563A3 publication Critical patent/WO1999010563A3/fr
Anticipated expiration legal-status Critical
Ceased 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
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/12—Process control or regulation
    • 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
    • C25D17/06—Suspending or supporting devices for articles to be coated
    • C25D17/08—Supporting racks, i.e. not for suspending

Definitions

  • the invention relates to a method and a device for the energy-saving simultaneous electrolytic treatment, in particular electroplating, of several workpieces connected as electrodes, each with the same electrolysis current (electroplating current) in immersion bath electrolysis systems.
  • the amount of metal deposited is almost proportional to the electroplating current in the electroplating cells commonly used and the current densities used therein.
  • each workpiece it is therefore necessary for each workpiece to be supplied with a very specific electroplating current.
  • each workpiece can be supplied with the same current.
  • Even with different workpieces there may be a demand for the same electroplating current for each workpiece.
  • These are workpieces that have the same surface, but a different shape. Examples of this are bars that differ in the right and left-hand threads at the end, or right and left parts that are otherwise the same.
  • the entire current flowing on the goods carrier in an electrolytic cell is distributed among the workpieces attached to it.
  • the partial currents ie the currents flowing through the workpieces
  • the partial resistances are always different. The reasons for this are different sized cross sections and lengths of the electrical conductors on the goods carrier, which are effective for each partial circuit, as well as contact resistance at the goods carrier clamping points and at the workpiece clamping points, which are not constant in the long run.
  • the electrical conditions of the anodes arranged opposite the individual workpieces are not constant. In practice, this can lead to the fact that even one or more workpieces of a product carrier do not carry any electricity at all.
  • electroplating frames can also be processed with material to be treated.
  • the electroplating frame corresponds to a workpiece, which in turn is attached to a goods carrier.
  • DE-OS 1 800 954 describes a copper bath tub for simultaneous galvanic deposition of copper coatings on a large number of workpieces of different and / or irregular shapes.
  • stationary series resistors are used to match the galvanizing currents of individual workpieces. beat.
  • the partial flows are fed by a bath current source with a correspondingly large total current.
  • the series resistors are individually adjustable. With the necessary effort, the electroplating currents of the workpieces can be set to the same size.
  • the disadvantageous disadvantage is the disadvantageous efficiency, in particular when the sum of the partial flows takes on a very high value, since in this case a large amount of electrical energy is converted into useless thermal energy.
  • EP 0 308 636 B1 describes a method for equalizing the partial flows in an electrolytic bath to improve the layer thickness distribution on several workpieces attached to a product carrier.
  • the sum of the partial flows on the individual workpieces represents the bath flow, which must be supplied by a rectifier.
  • the electrical conductors and contacts from the rectifier to the goods carrier must be of sufficient size.
  • the document proposes to insert passive, non-adjustable series resistors into each partial circuit on the product carrier. These series resistors act as current distribution resistors, which are intended to impress the partial current in each workpiece. As the resistance value of each series resistor increases, the impressions of the partial currents increase. However, a complete adjustment of the partial flows is practically not possible. It is also disadvantageous in this case that the electrical energy to be used increases with increasing resistance value. The electrical efficiency of electroplating cells equipped in this way is therefore also unsatisfactory.
  • chrome plating is the galvanizing of cylindrical piston rods for shock absorbers.
  • the hard chrome layer to be applied requires a plating current of 800 A per bar at a cell voltage of about 7 V per rod. If there are 10 bars on a product carrier, the rectifier and all current conductors of the bath must be dimensioned for a current supply of at least 8000 A.
  • the rectifier power loss and the electrical power loss in the conductors is around 24 kW at 8000 A.
  • the power loss can be calculated from the empirical values from the electroplating bath power supply. With good approximation it can be assumed that energy losses occur in the rectifier, which result from an internal voltage drop of 2 V multiplied by the rectifier output current.
  • the invention is therefore based on the problem of avoiding the disadvantages of the known devices and methods and, in particular, of finding a method and a device with which a uniform electrolysis power supply, in particular galvanizing power supply, can be made possible for each workpiece or for each electrolysis frame on a goods carrier, the lowest possible energy losses must be accepted and the system equipment should be designed as simply as possible.
  • the device according to the invention is used for the energy-saving simultaneous electrolytic treatment, in particular electroplating, of several workpieces connected as electrodes, each with the same electrolysis current.
  • Brackets used for electrical contacting and workpieces held thereon and ii. at least one counter electrode each.
  • the workpieces When the workpieces are galvanized, the workpieces are switched as cathodes and the counter electrodes as anodes; in electrolytic etching / demetallizing, the workpieces are switched as anodes and the counter electrodes as cathodes.
  • the individual sub-cells are electrically connected in series.
  • galvanizing workpieces only the application of galvanizing workpieces is considered.
  • the specified embodiments and examples can also be transferred to the electrolytic etching process by interchanging the polarity of the electrodes and the workpieces.
  • the series connection of the individual sub-cells ensures that the same workpieces or electroplating frames, each accommodated in a subcell, are automatically flowed through by the same electroplating current. If, for example, a higher contact resistance forms at one of the contact points for one of the workpieces, this resistance determines the electroplating current in all sub-cells. Under these circumstances, either a lower galvanizing current flows through all sub-cells, so that the total galvanizing time must be increased in order to achieve a desired layer thickness on all workpieces, or the galvanizing voltage is increased in order to achieve a constant galvanizing current. The latter procedure is usually used by preferably working with a constant current control and thus generating a constant gating current at the rectifiers used as the current source, which flows through all sub-cells.
  • the device and the method therefore ensure that the partial flows on the individual workpieces are matched to exactly the same value.
  • the device according to the invention and the method are therefore already compared to the aforementioned known devices and methods according to the
  • the invention also has the further advantage that the uniformity Gung the layer thickness of the deposited metal layer does not go hand in hand with a reduced efficiency in metal deposition as in the known devices and methods. While in the known methods and devices an approximate equalization of the partial currents is only made possible by using the series resistors, but the series resistors represent additional current consumers, by means of which the efficiency in the galvanization is reduced, such consumers are not required in the method according to the invention.
  • the power supply lines to the anodes and cathodes can be designed to be less complex. All electrical conductors should only be dimensioned so large that a current can flow that corresponds to the current flow for a workpiece. For this purpose, the cables and conductors have a comparatively small cross section and a correspondingly lower weight. The electrical efficiency of a rectifier with the same power is much higher with a large nominal voltage and a small nominal current than with conventional galvanic rectifiers with a small nominal voltage and a large nominal current.
  • each product carrier is fed in series with a current of 800 A.
  • the total power loss is 3.2 kW and the efficiency is 94.5 percent. With four bathrooms, the total power loss is only 12.8 kW, which is a gain of 83.2 kW compared to the prior art. The savings that result from the transportation of the much lighter goods carriers are not included here.
  • Another advantage of the invention is that the investment costs for rectifiers for low rated current and high rated voltage are significantly lower are higher than for rectifiers for high nominal current and low nominal voltage with the same power, because the rectifier diodes and the current conductors of the rectifier can only be dimensioned for the low current at high voltage.
  • the anodes of each subcell are electrically connected to the holders for the workpieces and thus to the workpieces of an adjacent subcell.
  • the anodes not connected to holders and the workpieces attached to them and the holders not connected to anodes and the associated workpieces are each connected to one pole of the current sources, so that a closed circuit is created.
  • the anode of the first partial cell is connected to the workpiece of the second partial cell.
  • the anode of the second sub-cell is connected to one pole and the workpiece of the first sub-cell to the other pole of the current source, for example a rectifier.
  • the workpieces are preferably fastened to goods carriers via the brackets and are electrically insulated from the goods carriers.
  • the product carriers are used to transport the workpieces from one treatment bath to one plating bath electroplating system to the next.
  • the goods carriers are transported from bath to bath by means of suitable transport devices. In order to ensure electrical insulation of the holders and the workpieces from one another, it is particularly expedient to produce the goods carriers from an electrically non-conductive material.
  • rod-shaped anode conductors which project upwards from the anodes and are electrically connected to the anodes and are attached to the product carriers and are electrically insulated from them, which are used to produce an electrical Serve contact to the anode conductors.
  • the contact sockets are designed and arranged so that they come into electrical engagement with the anode conductors when the product carrier is placed on the bath container, or that externally actuated switching devices are provided on the contact sockets, via which electrical contact is made with the anode conductors.
  • the Gaivanisierstrom is from a pole of the power source via electrical connections on goods carrier receptacles arranged on one or both sides on the goods carriers, for example contact pairs, also arranged on the goods carriers and in electrical contact with the workpieces in a first electrolytic subcell and from there to the workpieces in the first subcell.
  • the current then flows from the workpieces through the electroplating liquid and to the anodes. From there, the current reaches the anode conductors and via them to the contact sockets when the product carrier has been placed on the bath container.
  • the Gaivanisierstrom is then passed in succession through the individual sub-cells via further current bridges which, as individual electrical connections via current conductors insulated from the product carriers, electrically connect the anodes of each sub-cell to the workpieces of the adjacent sub-cell.
  • the current bridges are firmly connected to the brackets.
  • the Gaivanisierstrom is returned from the anodes in a last sub-cell via further contact sockets and then via current bridges and via further electrical connections arranged on the goods carrier receptacles to the other pole of the current source.
  • the circuit is now closed.
  • the individual sub-cells are electrically connected in series.
  • Each contact socket on an article carrier assigned to an anode of a partial cell is in each case electrically fixedly connected to the holders of an adjacent partial cell via current bridges.
  • the holders of the first subcell which are not electrically connected to contact sockets, are electrically connected to the electrical contact of a pair of contacts on the goods carrier via current bridges.
  • this electrical contact is associated with a pole of the power source electrically connected mating contact element of the contact pair on the bath container so that the brackets of the first sub-cell are electrically connected to this pole of the power source when the product carrier is placed on the bath container or when it is lifted from the bath container again be separated.
  • the anode conductors of the anodes in the last sub-cell on the other side of the row of sub-cells that are not electrically connected to brackets are directly connected to the other pole of the current source.
  • these anode conductors can in turn also be assigned contact sockets on the product carrier, which are electrically connected to an electrical contact of another pair of contacts on the product carrier, this electrical contact being assigned a counter-contact element of the contact pair on the bath container that is electrically connected to the second pole of the power source so that the Anode conductors of the last subcell are electrically connected to this second pole of the power source when the product carrier is placed on the bath container or are separated from it again when it is lifted off the bath container.
  • first current conductors are provided between the holders and these contact elements and second current conductors between the anodes and the counter-contact elements of the contact pairs and between the anodes of one of the sub-cells and the current source.
  • the necessary circuit is formed by the following measures:
  • ganvanizing current is conducted from a pole of the current source via one of the individual, electrically isolated, individual carrier contacts, one of the first current conductors and the holders to the workpieces in a first subcell.
  • the galvanizing current is conducted from the workpieces in the first partial cell via the electroplating liquid and the anodes of this first partial cell and via one of the second current conductors to the next product carrier contact.
  • the galvanizing current then flows via this contact and via one of the first current conductors to the workpieces in a second subcell and from these workpieces via the electroplating liquid and the anodes in this second subcell and via a further second current conductor to a third product carrier contact.
  • the current flows in the same way via further first current conductors to further workpieces in further partial cells and from the workpieces in the further partial times via the electroplating liquid and the anodes of the further partial cells and via further second current conductors finally back to the current source.
  • the circuit is closed in a series connection.
  • the product carrier contacts are closed and opened when the product carrier is lifted from the bathroom container.
  • the electrical connections between the rod-shaped anode conductors which are in electrical contact with the anodes and the workpieces are produced by the Current flows over the current bridges to the contact sockets on the goods carrier and in that the contact sockets on the goods carriers have insertion funnels into which the anode conductors are instructed and come into engagement when the goods carriers are lowered.
  • the connections between the anode conductors and the contact sockets can also be established or separated by externally operated switching devices on the contact sockets.
  • a plurality of independent electroplating circuits can also be provided on a product carrier and at least one current source can be assigned to each of these circuits. This embodiment is suitable for both the first circuit arrangement and the second circuit arrangement.
  • Electrode insulations are preferably provided in the bath container, by means of which each anode within the bath container is separated from the other anodes in such a way that no galvanizing current can flow directly from anode to anode.
  • Openings should be contained in the anode insulation so that electrolyte fluid and / or air introduced into the electrolyte fluid via an air injection can be exchanged through these openings between the part-times.
  • electrolyte liquid and / or air is only exchanged between the sub-cells if no gaiting current flows.
  • At least one electrolyte inlet tube or at least one air inlet tube in the bath tank is provided for improved mixing of the electrolyte liquid, the inlet tubes and the inlet tubes having openings from which electroplating liquid or air can flow out and flow into the sub-cells.
  • the measurement of the terminal voltages at the current sources can be used to check the function of the individual sub-cells. If a certain value for the terminal voltage at the current source, which indicates an increase in a contact resistance or another defect in the system, is exceeded, suitable measures can be taken to remedy the defect.
  • the device and the method can be used to coat large-scale individual parts (items to be treated) which are attached to electroplating frames or directly to the product carriers and transported through the immersion bath electroplating system.
  • electroplating drums with pourable material can be used as workpieces.
  • the device and the method can also be used for the electrolytic removal of metal (etching / demetaling) from workpieces.
  • the embodiments and examples are to be modified accordingly.
  • Both soluble and insoluble anodes can be used as anodes in the electroplating process, or some partial cells can be equipped with soluble and others with insoluble anodes.
  • Figure 1 shows a schematic cross section through an immersion bath with a plurality of sub-cells in a first circuit arrangement
  • Figure 2 shows a schematic cross section through an immersion bath with several sub-cells in a second circuit arrangement.
  • a bath container 1 is shown in cross section in FIG.
  • the bath container 1 can consist of plastic or of insulating-coated metal.
  • This container there are several electrolytic partial cells 2.
  • Each partial cell consists of a cathode 3, which is formed by the workpiece, and an anode 4.
  • the workpieces are fastened to the product carrier in an electrically insulated manner.
  • the anodes 4 can be both soluble and insoluble anodes.
  • the anodes are arranged in a stationary manner in the bath container 1 in such a way that the anode-cathode spacing required for electroplating results in the electrolytic subcell 2 together with the workpiece to be inserted into it.
  • Anode conductors 5 are attached to the anodes in an electrically conductive manner. These protrude with their upper end, e.g. is designed as a contact pin, so far beyond the electrolyte mirror 6 that an electrical connection can be made to contact sockets 8 which are insulated on the goods carrier 7 when the goods carrier - as shown here - is placed on the goods carrier receptacles 15 on the bath container 1.
  • Each anode 4 of a subcell 2 is electrically shielded from the other anodes by means of anode insulation 9 in the electrolyte.
  • the anode insulation 9 consists of an electrically non-conductive material, which also against one chemical attack of the electrolyte is resistant.
  • 1 shows a tubular anode 4 for the galvanization of workpieces in the form of rods. The rod is in the center of the cylindrical anode. It is held in the correct position by pliers 10.
  • the electrically conductive pliers 10 are also used to supply the Gaivanisierstromes to the rod.
  • the pliers are also attached to the goods carrier 7 in an electrically insulated manner.
  • a goods carrier contact 11 is shown schematically, which is also attached to the goods carrier in an electrically insulated manner.
  • the mating contact 12 is arranged stationary on the edge of the bath container 1.
  • the rectifier 13 is used for the galvanizing power supply.
  • the negative pole of the rectifier is connected to the counter contact 12 via the electrical conductor 14.
  • all electrical conductors are represented by simple lines. If a transport trolley has placed a goods carrier 7 on the goods carrier receptacles 15 of a bath, the rectifier 13 is electrically connected to the first cathode 3 on the goods carrier via the mating contact 12 and the goods carrier contact 11 and via a current bridge 16.
  • the rectifier 13 forms, together with the electrical conductors, contacts, electrolytic sub-cells and their connections, an electrical series connection.
  • a Gaivanisierstrom flows over the workpiece connected as cathode 3 to the anode 4 of the partial cell 2. From the anode 4, it flows via the anode conductor 5 with the contact pin at the upper end of the anode conductor into the contact socket 8. This can also be a mechanical actuated switch be formed. From there, the current flow repeats through the next sub-cell, just as it was described starting from the goods carrier contact 11. The serial galvanizing current flows back from the last anode conductor of the bath to the rectifier 13.
  • the galvanizing current is set by the galvanizing system control for the rectifier to the value required for the workpieces and kept constant by a current regulator.
  • the serial galvanizing current described is therefore a constant current. Irregularities in the contacts 8, 11, 12, 18 and the pliers 10 are completely corrected until the nominal voltage of the rectifier is reached.
  • An unusual increase in the terminal voltage of the rectifier for driving the serial Gaivanisierstromes is a sign that at least one effective resistor in the overall circuit has become incorrectly larger. This shows that maintenance is required even before the rectifier nominal voltage is reached as the highest possible terminal voltage for error-free production.
  • the serial galvanizing current can be easily regulated and measured using known means of electrical engineering, a safe and precise galvanizing power supply for each individual workpiece on a product carrier is guaranteed. In addition, the entire power supply system can be continuously monitored completely.
  • the voltages between the anodes and the cathodes of the sub-cells connected in series ie the cell voltages, add up to the voltage drops across the series-connected resistances of all contacts and current conductors.
  • the sum of all these partial voltages represents the terminal voltage of the rectifier 13.
  • the nominal voltage of the rectifier must be at least as large as this total voltage value, since a control reserve must be provided.
  • the nominal rectifier voltage reaches a level that requires protective measures against touching the live parts by the personnel. From around 50 V it is necessary to install appropriate personal protection or coverings.
  • several serial circuits with a corresponding number of rectifiers per bath and product rack can alternatively be used.
  • the least effort for realizing the invention is to work with only one serial circuit per product carrier. In this case, only one rectifier is required for all sub-cells of the bath. It is only to be dimensioned so that the current for a workpiece can flow with a rectifier nominal voltage that corresponds to the number of sub-cells.
  • All electrolytic sub-cells are in a common electrolyte. Through the series connection of the partial times, a potential occurs between adjacent anodes which is approximately as large as the anode / cathode voltage of a partial cell. This means that a Gaivanisierstrom can flow from one anode to another.
  • the anodes could be metallized on the outside.
  • Anode insulation 9 is used to avoid this possible metallization. They electrically shield one anode from the other.
  • An electrolyte overflow from the bath and a circulation pump for electrolyte fluid are not shown in the figures.
  • a compressor for the air injection via the air injection tube 20 is not shown.
  • This tube also has openings under the sub-cells for air to flow out. The air serves to move the electrolyte. It is not necessary for the tubes 19, 20 to introduce electrolyte or air into the sub-cells 2 from below. It is sufficient if the tubes 19, 20 are located in the vicinity of the sub-tents with openings which point in the direction of these sub-cells.
  • the goods carrier 7 has support arms 21 on both sides.
  • a transport device engages in these support arms in order to pull the goods carrier 7 vertically upwards out of the bath and into another bath, e.g. a rinsing bath to transport.
  • the product carrier itself could consist of an electrical insulator, such as e.g. Ceramic or plastic.
  • the contact sockets 8 and the pliers 10 are preferably fastened in an electrically insulated manner to a metal goods carrier.
  • the contact sockets 8 preferably have an introduction funnel on the underside.
  • the movements and forces required for this are derived from the existing processes of the goods carrier. If externally actuated contacts are used for this electrical connection, the movements and forces required for this are to be applied using a mechanism and control (not shown).
  • the contacts 11, 12 can be replaced by a metallic goods carrier and by the goods carrier receptacle 15, in such a way as is known from the plating bath electroplating systems.
  • the metallic goods carrier 7 then lies on the negative pole of the rectifier 13 via the receptacle 15 serving as a contact.
  • the second goods carrier receptacle 15 can also be used to transmit the Current from the negative pole of the rectifier 13 can be used on the goods carrier 7.
  • the contact pair 18 with opposing contacts can be dispensed with.
  • the positive rectifier terminal is then connected directly to the last anode conductor 17.
  • FIG. 1 Another circuit arrangement of the invention is shown in FIG. This differs from the embodiment according to FIG. 1 by the type of current transfers to the goods carrier 7. With the exception of the pliers 10, all contacts are arranged outside the bathroom area. The electrical connections to the anodes 4 are made stationary from each anode conductor 5 directly from the bath container 1.
  • Figure 2 two independent serial circuits with two rectifiers 13 'and 13 "are shown as an example. However, this is not a condition for the implementation of the invention. Independent serial circuits on a product carrier, however, allow partial loading of the product carrier. So it is possible, only In this case, the other circuit or the other circuits of a product carrier can remain unloaded
  • the principle is that only one rectifier and as many sub-cells as possible should be used for each rectifier, since the costs for protection against excessive contact voltage are significantly lower than the power supply costs for high rectifier currents.
  • the negative pole of the rectifier 13 'feeds the workpiece connected as the cathode 3 in the subcell 2a via the contact groups 22a.
  • the anode current of sub-cell 2a is fed via anode conductor 5 and via contact group 22b to the cathode of sub-cell 2b.
  • the electrical connection of the conductors 24 to the anode conductor 5 is shown in FIG. 2 in the bathroom for reasons of clarity. In practice, however, this connection is implemented above the electrolyte level 6 in order to avoid corrosion.
  • Insulated conductors 23 are also laid from the contact groups 22 to the pliers 10, the cross-section of which is dimensioned such that they can carry the small serial Gaivanisierstrom. They are attached to the goods carrier in an orderly manner.
  • the serial galvanizing current of the rectifier 13 'then flows successively through the partial electrolytic times 2a to 2d.
  • the current returns from the anode conductor 5 of the subcell 2d to the positive pole of the rectifier 13 '.
  • the second serial electroplating circuit of the rectifier 13 ′′ is also formed in the same way.
  • the contact groups 22 in the figures are arranged in the longitudinal direction of the goods carrier. They are supported on a console 25. In practice, however, these contact groups 22 are expediently arranged in the transport direction.
  • the console 25 represents the edge of the bath container 1.
  • the goods carrier In the galvanizing power supply according to FIG. 1, the goods carrier must be fully equipped with workpieces. In the embodiment according to FIG. 2, this is not necessary for the serial circuit according to the invention if further electrical switches are inserted. These switches are arranged in the stationary electrical lines 24 so that they electrically bridge the sub-cells 2 that have not been loaded with a workpiece.
  • the switches e.g. electrical contactors, can be actuated by control signals given by the electroplating system control.
  • the invention can also be used in the electrolytic treatment of flat workpieces such as printed circuit boards, in which a very uniform layer thickness is required from printed circuit board to printed circuit board and also over the entire surface of a printed circuit board.
  • the device and the method according to the invention are also advantageously used in the electroplating of bulk material in drums. If two drums are arranged on a drum carrier, these can be electrically connected in series for the purposes of the invention.
  • the serial Gaivanisierstrom is on the two drum carrier took headed through the drum. Two sub-cells are formed in the electrolytic bath. In this case, the electroplating rectifier can only be dimensioned for the current of a drum, but with double voltage. This circuit shows that the Gaivanisierstrom is exactly the same size on both drums.

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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)
  • Automation & Control Theory (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

L'invention concerne un dispositif et un procédé pour le traitement électrolytique simultané, avec économie d'énergie, de plusieurs pièces connectées en tant qu'électrodes, chacune avec le même courant d'électrolyse. Le dispositif comporte au moins deux cellules d'électrolyse partielles dans un récipient à bain et au moins une source de courant servant à alimenter les cellules partielles en courant d'électrolyse. Les cellules partielles comportent aussi des fixations servant à la mise en contact électrique, sur lesquelles sont fixées les pièces, ainsi qu'au moins une contre-électrode chacune. Lors de la galvanoplastie des pièces, celles-ci sont connectées en tant que cathodes et les contre-électrodes en tant qu'anodes. Lors de l'attaque/la démétallisation électrolytiques, les pièces sont connectées en tant qu'anodes et les contre-électrodes en tant que cathodes.
PCT/DE1998/002501 1997-08-21 1998-08-19 Procede et dispositif pour le traitement electrolytique simultane de plusieurs pieces avec economie d'energie Ceased WO1999010563A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP98951217A EP1015671A2 (fr) 1997-08-21 1998-08-19 Procede et dispositif pour le traitement electrolytique simultane de plusieurs pieces avec economie d'energie
JP2000507865A JP2001514329A (ja) 1997-08-21 1998-08-19 多数の被加工品を省エネで同時に電気分解的に処理するための方法と装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997136351 DE19736351C1 (de) 1997-08-21 1997-08-21 Verfahren und Vorrichtung zum präzisen Galvanisieren von Werkstücken
DE19736351.2 1997-08-21

Publications (2)

Publication Number Publication Date
WO1999010563A2 true WO1999010563A2 (fr) 1999-03-04
WO1999010563A3 WO1999010563A3 (fr) 1999-08-19

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Application Number Title Priority Date Filing Date
PCT/DE1998/002501 Ceased WO1999010563A2 (fr) 1997-08-21 1998-08-19 Procede et dispositif pour le traitement electrolytique simultane de plusieurs pieces avec economie d'energie

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Country Link
EP (1) EP1015671A2 (fr)
JP (1) JP2001514329A (fr)
DE (1) DE19736351C1 (fr)
WO (1) WO1999010563A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120024696A1 (en) * 2008-04-18 2012-02-02 Integran Technologies Inc. Electroplating Apparatus
US20220112621A1 (en) * 2020-10-08 2022-04-14 Honeywell International Inc. Systems and methods for enclosed electroplating chambers
US20220349083A1 (en) * 2021-04-28 2022-11-03 Honeywell International Inc. Electroplating systems and methods for wear-resistant coatings

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DE10141056C2 (de) 2001-08-22 2003-12-24 Atotech Deutschland Gmbh Verfahren und Vorrichtung zum elektrolytischen Behandeln von elektrisch leitfähigen Schichten in Durchlaufanlagen
DE102005032738B3 (de) * 2005-07-08 2006-11-23 Siemens Ag Verfahren und Vorrichtung zum Bearbeiten wenigstens zweier Werkstücke mittels elektrochemischer Behandlung
CN118856207B (zh) * 2024-07-26 2025-05-23 沈阳欧施盾新材料科技有限公司 一种复合材料缠绕气瓶的金属内衬层的消除装置及消除方法

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JPS5928597A (ja) * 1982-08-05 1984-02-15 Ibiden Co Ltd 炭素電極棒の電気メッキ方法及びそのメッキ装置
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Cited By (5)

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Publication number Priority date Publication date Assignee Title
US20120024696A1 (en) * 2008-04-18 2012-02-02 Integran Technologies Inc. Electroplating Apparatus
US20220112621A1 (en) * 2020-10-08 2022-04-14 Honeywell International Inc. Systems and methods for enclosed electroplating chambers
US11542626B2 (en) * 2020-10-08 2023-01-03 Honeywell International Inc. Systems and methods for enclosed electroplating chambers
US20220349083A1 (en) * 2021-04-28 2022-11-03 Honeywell International Inc. Electroplating systems and methods for wear-resistant coatings
US11834752B2 (en) * 2021-04-28 2023-12-05 Honeywell International Inc. Electroplating systems and methods for wear-resistant coatings

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WO1999010563A3 (fr) 1999-08-19

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