EP1743959A1 - Procédé de déposition galvanique de métaux ou d'alliages de métaux au moyen d'un tonneau de galvanisation - Google Patents

Procédé de déposition galvanique de métaux ou d'alliages de métaux au moyen d'un tonneau de galvanisation Download PDF

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Publication number
EP1743959A1
EP1743959A1 EP05015407A EP05015407A EP1743959A1 EP 1743959 A1 EP1743959 A1 EP 1743959A1 EP 05015407 A EP05015407 A EP 05015407A EP 05015407 A EP05015407 A EP 05015407A EP 1743959 A1 EP1743959 A1 EP 1743959A1
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EP
European Patent Office
Prior art keywords
drum
galvanizing
plating
conductive
electrolyte
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.)
Withdrawn
Application number
EP05015407A
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German (de)
English (en)
Inventor
Peter Simon
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.)
Aluminal Oberflachentechnik GmbH
Original Assignee
Aluminal Oberflachentechnik GmbH
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Filing date
Publication date
Application filed by Aluminal Oberflachentechnik GmbH filed Critical Aluminal Oberflachentechnik GmbH
Priority to EP05015407A priority Critical patent/EP1743959A1/fr
Publication of EP1743959A1 publication Critical patent/EP1743959A1/fr
Withdrawn legal-status Critical Current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
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/16—Apparatus for electrolytic coating of small objects in bulk
    • C25D17/18—Apparatus for electrolytic coating of small objects in bulk having closed containers
    • C25D17/20—Horizontal barrels
    • 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

Definitions

  • the invention relates to a device for electrodepositing metals and / or metal alloys from electrolytes, in particular aluminum and / or alloys of organometallic aluminiumalkylkomplex termen electrolytes on substrates to be coated with at least one galvanizing drum for receiving the substrates to be coated and at least one drive unit for rotationally driving the Drum via at least one drive element provided thereon and at least one power supply device for supplying electricity to the interior of the drum and a galvanizing drum, which is providable or provided with end workedem bearing and at least one drive element for connection to a drive unit for rotationally driving the drum.
  • Electroplating drums serve to receive small parts and bulk material for electroplating them in aqueous solution, for example the nickel plating or galvanizing of these substrates, wherein the substrates are filled into the plating drum and driven by the drive unit.
  • Electrodeposition of aluminum or aluminum alloys requires deposition from non-aqueous organic systems, because deposition from aqueous solutions is generally not possible due to the very low potential of aluminum.
  • Precipitation of fine crystalline smooth aluminum and aluminum alloy layers occurs from anhydrous organoaluminum aluminum electrolyte systems wherein aluminum alkyl complexes are dissolved in aromatic hydrocarbons such as toluene.
  • aromatic hydrocarbons such as toluene.
  • the use of toluene together with oxygen can create an explosive mixture which is ignited by sparks from a drive unit used to turn the plating drum can.
  • the beats EP 1 279 751 A1 the encapsulation of the drive unit, which is arranged in the support frame directly above the galvanizing drum before.
  • the EP 1 279 751 A1 further discloses a device consisting of a support frame with support bracket and transport receptacles and at least one galvanizing drum and at least one drive unit for the galvanizing drum.
  • the plating drum has a perforated inner tube extending along the longitudinal axis of the plating drum and having side openings opposite an electrolyte feed in the electrolyte container.
  • the drive unit is housed in a sealed gas-tight housing, it is still directly above the plating drum so that solvent vapors can flow around the housing and permanently attack the housing material, permitting it to become permeable to solvent vapors.
  • the DE 44 44 103 A1 describes the provision of a submerged drum which is immersed in a treatment solution.
  • a motor for rotatably driving the drum is attached to one end of a support beam which supports the drum via support arms.
  • the motor is located just above the edge stiffening of a trough containing the treating solution almost completely outside this outside the liquid level of the treatment solution.
  • the motor since the motor is attached directly to the support beam, it can not be ruled out in this design that ascending vapors of the treatment solution attack the motor housing.
  • a device for the batchwise surface treatment of workpieces, in particular for electroplating is known.
  • This includes a galvanized drum with perforated drum shell. Over the entire length of the drum shell extends a supply channel, which is provided with outlet openings in the direction of the drum interior and with an accessible from the outside of the drum inlet opening.
  • the supply channel extends as a rib in the shell region of the drum.
  • the drum shell is closed by plastic plates.
  • An electric drive motor For the drum as well as the drum is attached to a support frame assembled.
  • the Kathodenzu effeten are guided by bearing pins in the end walls of the drum in this.
  • the cathode at the lower end of the Kathvdenzu effet lies in the region of the lower part of the drum shell on this and is in an electrically conductive connection to be plated in the drum with metallic material.
  • the journals are rotatably mounted in bearing bushes within the drum end walls.
  • a similar arrangement also reveals the DE 44 38 208 C1 such as DE 197 17 789 A1
  • contact bulbs are arranged at the end of the contact cables substantially in the longitudinal direction of the plating drum.
  • Further diagonally arranged Kunststoffbimen or cathode contacts discloses the DE 32 36 138 A1 , These are in turn mounted in the bearing of the drum.
  • disc contacts which are attached to the end faces of the drum.
  • ingot contacts which are inserted into drum corner bars and extend over the length of the drum.
  • galvanizing drums with side-by-side T-shaped contact connections are known, which are attached to the front side on the inside of the drums and protrude into the interior of the drum.
  • so-called button contacts are known, as for example in the DD 285 129 A5 be used. Via the button contacts, a current is transferred to the galvanized material.
  • an angled filler neck is arranged on the plating drum, is poured over the pourable anode material in the plating drum.
  • a feed screw is provided before entering the galvanizing drum, which introduces the anode material into a perforated inner tube of the galvanizing drum.
  • the anode material is comminuted in the form of pellets, fragments or anode residues or introduced as granules in the current-conducting and outwardly insulated inner cylinder, which serves as an inner anode.
  • the filled into the galvanizing substrates serve as a cathode.
  • the cathode current is supplied via the button plugs via the Galvanizrommelau communwand.
  • a rotatable plating barrel projecting into an electrolyte bath.
  • different cages are arranged, in which the material to be coated is received.
  • the individual cages are rotatable against the direction of rotation of the drum.
  • two plate electrodes are provided in each case, in the interior of the cages extend metal rod electrodes.
  • the drum has a frusto-conical end wall and a flat end wall. In the region of the flat end wall, a holder is provided, which is connected to a motor, so that the drum is rotatably mounted there.
  • a fixed nozzle is provided at a distance from the latter, which can inject liquid through an opening provided in the frusto-conical end wall.
  • electrolyte fluid is injected from the electrolyte bath.
  • the injected electrolyte fluid passes through a distributor space and an opening in the respective end wall of the cages and through them to the material to be coated.
  • a galvanizing drum is in DE 28 37 753 A1 discloses, wherein here the drum is attached to a support frame. Around the drum, a spraying device moves, which injects liquid into the drum. About the support arms, on which the drum is suspended rotatably, there is a power supply to the inside of the drum. Via a gear drive, the drum is driven by a motor attached to the support frame.
  • the present invention is based on the object, a device for the electrodeposition of metals and / or metal alloys of electrolytes on substrates to be coated according to the preamble of claim 1 to the effect that a contact of vapors and / or electrolyte from the galvanizing drum with power supply parts the device, a motor of a drive unit, as well as growths of metals and / or metal alloys to the current-carrying parts of the plating drum are substantially avoided, at the same time a better current distribution and more uniform distribution of an electrolyte within the galvanizing drum to produce a better layer on the substrates to be coated is possible.
  • the object is achieved by a device according to the preamble of claim 1, characterized in that the at least one drive unit spaced from the plating drum substantially shielded against leaking during operation of the plating drum solvent vapors and via positive and / or frictional traction means with the at least one drive element the galvanizing drum is connectable or connected.
  • the object is achieved in that at least one electrolyte feed device is provided in at least one end-side pivot bearing of the galvanizing drum.
  • This provides a device for electrodepositing metals and / or metal alloys from electrolytes in which the drive unit is located away from and shielded from the plating drum so that solvent vapor passing around the plating drum no longer communicates with the drive unit due to the distance come in contact.
  • a drive motor of a drive unit may be disposed in a space separate from the atmosphere above the plating drum. By the shielding or separation caused by a drive motor of the drive unit ignition spark into the atmosphere above the galvanizing drum during operation of the device can be avoided.
  • a safe and over a long distance easily be provided transmission of the driving force to the provided on the galvanizing drum drive element, in particular gear, via traction means which can be positively and / or frictionally connected to the drive element to the plating drum.
  • traction means can safely attack, for example, a gear as a drive element, even transmit larger forces and can withstand solvent vapors over a sufficient Zeüspanne.
  • belts can also be used as traction means.
  • the traction means can advantageously a lock passage be provided within a wall for the separation of the atmosphere over the galvanizing drum, which substantially avoids the penetration of the atmosphere above the galvanizing drum into the atmosphere above the drive motor.
  • a temporary purging of the atmosphere over the drive motor for removing components inadvertently penetrated from the atmosphere via the plating drum through the passage of the lock can also take place. Especially during maintenance work on the drive motor can be done before opening the space surrounding the drive motor flooding with a possible solvent residues from the atmosphere on the plating drum displacing medium.
  • Remotely locating the drive unit with respect to the plating drum is particularly advantageous when using multiple plating drums, since then only one drive unit is located remotely from the plating drums, protected from the atmosphere above the plating drums, for example, in another room or shielded by one Hood, wherein a connection with the drive elements of Galvaninstrumentrommeln can be done via one or more traction means.
  • assemblies with a high space requirement for the drive unit are no longer required, but rather the traction means, e.g. along outer walls of a Galvaninstrumentrommeln receiving space are arranged.
  • the power supply means for supplying power to the one or more bearings of the plating drum is sheathed.
  • a jacket of a current-supplying copper rod is provided with a tube, wherein insulation between the copper rod and tube can be provided.
  • the insulation may consist of a PU foaming.
  • the insulation may consist of a PU foaming.
  • a non-metal tube be provided for example from Techtron®, in which case can be dispensed with foaming and / or a coating on the outside of the tube.
  • a coating but also when providing a non-conductive material for the sheath of the power supply, good protection against corrosion and an unwanted coating is possible.
  • At least one electrolyte feed device in at least one end-side rotary bearing of the plating drum enables a more central injection of the electrolyte into the interior of the plating drum, whereby the coating produced on the substrates can also be improved.
  • the structure of the plating drum also becomes more compact since an electrolyte supply line need only be connected at one or both ends of the plating drum.
  • the electrolyte then passes centrally into the interior of the drum, ie directly into the region of the arrangement of the substrates to be coated, so that they can be over-sprayed with the electrolyte optimally.
  • the at least one electrolyte feed device As a passage opening within the pivot bearing, since this is a structurally simple to set up and thus less prone to solution.
  • an electrolyte feed via a injection tube may be advantageous to provide an electrolyte feed via a injection tube.
  • a injection tube extends at least partially in the longitudinal direction of the galvanizing drum and advantageously has various openings in its jacket, it also being possible to provide control and optionally also alignment of the injection via the positioning of the openings, if desired.
  • An injection tube thereby additionally improves the electrolyte distribution over the substrates to be coated. Since usually the substrates to be coated are more likely to be arranged in the lower region of the rotating drum be, for example, more or exclusively openings in this direction can be provided in the injection pipe.
  • the injection tube has at least one device for connection to the electrolyte supply device.
  • it may advantageously be fastened to the bearing of the plating drum instead of a diaphragm element.
  • the Elektrolyteindilsrohr consists either of a non-conductive material, in particular a plastic and / or of a conductive material, in particular a metal.
  • a plastic injection pipe is particularly resistant to corrosion by the electrolyte.
  • the plating drum may have a plate disposed therein at at least one end and extending over substantially the entire inside diameter of the plating drum of a solid corrosion resistant conductive material which is connectable or connected to a conductive element of the pivot bearing.
  • the conductive plate is made of brass or other at least partially conductive material.
  • the conductive plate is connected by screws with a Kupferkem, which in turn is connected to a power supply.
  • the Kupferkem is also advantageous in the pivot bearing of the galvanizing and stands also with the power supply device in connection.
  • the screws can advantageously be used to create a conductive connection between the conductive plate and the copper core.
  • a diaphragm member may be disposed over a portion of the conductive plate so that the screws are covered by the diaphragm member.
  • the diaphragm element itself can be fastened to the conductive plate via screws which are substantially not coated by the electrolyte.
  • Screws made of Techtron®, PEEK or a polyvinylidene fluoride prove to be particularly suitable here.
  • Techtron®, polyvinylidene fluoride, and especially PEEK have very good wear resistance, mechanical load carrying capacity, and dimensional stability properties both on contact with chemicals and at high temperatures. In the coating processes temperatures up to about 100 ° C are reached.
  • PEEK and Techtron® another material resistant to the particular electrolyte used can be used.
  • the diaphragm element is designed so that it advantageously extends to the passage opening in the conductive plate for passage of the electrolyte, so that the inflowing electrolyte can not come into contact there with the conductive plate.
  • At least one insulating device for protecting against growths of coating material can advantageously be provided or provided.
  • the insulating device may for example be an insulating sleeve which is inserted into the rotary bearing and covers the current-conducting regions. Preferably, it is additionally sealed against back-creep of the electrolyte.
  • the insulating device consists of Techtron®, a polyvinylidene fluoride (PVDF) or a polyphenylene sulfide (PPS).
  • the central region of the electrolyte injection or supply within the diaphragm element can cover the previously mentioned diaphragm element, which has a number of openings, for distributing the electrolyte.
  • An attachment of the panel elements to each other is preferably also releasably by, for example, screws.
  • the second aperture element be omitted, for example, when a Eindüsrohr is inserted or fastened there.
  • the conductive plate is connectable or connected to a non-rotating part of the pivot bearing of the plating drum so that it does not rotate with it during a rotational movement of the plating drum.
  • the already mentioned Kupferkem represents such a non-rotating part. It thus rotates the drive element of the galvanizing drum together with the sheathing around the at least one conductive plate around.
  • a better connection of the conductive plate to the power supply is possible because the conductive plate can be firmly connected to this and not, for example via sliding contacts or the like.
  • an air gap is provided to allow free rotation of the plating drum between the conductive plate and the adjacent thereto driving element of the plating drum.
  • Such an air gap makes it possible to easily turn the plating drum or the outer casing of the plating drum relative to the bearing and the conductive plate connected to it.
  • electrolyte creeps into this air gap and passes through this on the outside of the drive element and / or the bearing and there leads to growths of coating material, which is undesirable.
  • the insulating insert consists of Techtron® or another material with corresponding properties.
  • Such an insulating insert may be provided at both front ends of the plating drum. At the provided without drive element front end of the galvanizing drum This insulating insert is then inserted between the rotating part of the galvanizing drum and the stationary one.
  • the strip contacts when providing strip contacts extending along the longitudinal extension of the plating drum for introducing electricity into the interior of the plating drum, may be provided with sliding contacts in the region of the conductive plate for generating an electrical connection thereto.
  • the sliding contacts are then arranged at the end of the strip contacts and designed so that they can grind on the surface, in particular in the region of a groove in the conductive plate.
  • the strip contacts are usually inserted into the shell of the plating drum in the longitudinal direction thereof, so that upon rotation of the plating drum the sliding contacts slide over the obt surface of the conductive plate.
  • the sliding contacts can be provided with a projecting element which can engage in the groove provided in the edge region of the conductive plate. A current transfer to the strip contacts is thus very well and safely possible in this area from the conductive plate on the sliding contacts on the bar contacts.
  • an insulating element for partially Stromlosput the sliding contacts is provided in this region of the conductive plate. Particularly preferably, it is used as a segment in the conductive plate or used.
  • the insulating element is positioned in the plating drum such that it is substantially outside of the area used for coating substrates within the plating drum, ie in particular as an upper segment of the conductive plate or inserted therein. The sliding contacts are always switched off when they slide over this insulating element, so that a galvanic deposition in this area substantially does not take place.
  • screws used to secure the insulating member are inadvertently electroplated as they connect the insulating member to the conductive plate so that screws of a non-conductive material are advantageously used.
  • the conductive plate for preventing a conductive connection is partially provided with a resin coating.
  • a halo coating is particularly suitable, it being possible in principle to provide another coating with corresponding properties, which in particular re-insulates the insulating effect and thus substantially precludes a conductive connection between the conductive plate and other elements in contact therewith.
  • the parts of the galvanizing drum which come into contact with the electrolyte from a material that is substantially resistant to them and resistant to solvents and heat.
  • the wear of the galvanizing drum can thus be advantageously kept low.
  • Only the conductive elements that are provided within or on the plating drum are preferably made of a conductive material, in particular of a metal, such as copper.
  • drum side wall elements which together form the galvanizing drum jacket and are provided for the lateral closure of the galvanizing drum, with a slot perforation, since this can improve the inflow of electrolyte. just when the drum side wall elements are arranged obliquely opposite to the Einströmwellen.
  • the slot perforation can also be arranged at an angle to the longitudinal axis of the galvanizing drum.
  • the material used for the galvanizing drum jacket is, inter alia, PVDF or PPS.
  • At least one doctor element can be provided inside the plating drum, which is fastened in particular to at least part of bar contacts arranged along the plating drum and / or the injection tube for supplying electricity to the interior of the drum
  • a star shape of the doctor element proves to be particularly advantageous.
  • Such a squeegee element may be used instead of or in addition to an inner contact ring, e.g. be arranged by a Eindüsrohr or the like at any point within the galvanizing drum.
  • the doctor element can have a three- or four-pointed stamp shape in order to be able to be connected to three or four strip elements on the circumference of the galvanizing drum.
  • contact elements projecting into the interior of the drum and / or at least one electrically conductive plate in conjunction with the interior of the plating drum and / or strip contacts and at least one electrically conductive plate and / or an electrically conductive electrolyte Injection tube for introducing electrolyte into the interior of the plating drum and / or at least one doctor element of electrically conductive material may be provided in the interior of the plating drum.
  • different power supply devices can be provided and interchanged, depending on the requirements of the application. This provides flexibility in the use of a plating drum, which is unknown in the prior art.
  • the galvanizing drums of the prior art are each equipped only for one type of power supply device.
  • One easy conversion of the plating drum to achieve a different type of power supply is not possible in the galvanizing drums of the prior art and also not provided.
  • by providing such a smooth reformability of the power supply to the interior of the plating drum significant costs can be saved since, in principle, only a single model of plating drum needs to be manufactured and provided with the corresponding desired power supply. A reaction to customer requests is thus problem-free, relatively inexpensive and fast.
  • the device 1 shows a side sectional view of the first embodiment of a device 1 according to the invention for the electrodeposition of metals and / or metal alloys from electrolytes.
  • the device 1 comprises a drive unit 2 shown only dashed in Figure 1 with a drive motor, a plurality of drive elements 3 in the form of gears, a positive traction means 4 in the form of a chain which is mounted between a gear and a corresponding pinion on the motor of the drive unit (see also the side view in Figure 2), a galvanizing drum 5 for receiving substrates to be coated and a power supply device 6 for supplying current into the interior of the galvanizing drum.
  • the drive unit or at least the motor of the drive unit is arranged away from the galvanizing drum, for example in another room, and connected via the traction means and the drive elements to the galvanizing drum in order to drive it rotationally.
  • the motor of the drive unit is shielded by being remotely located in a space other than the plating drum or separated by a wall, with the traction means passing through the wall of the room or spaces through sluices, and thus the separation of the atmospheres above the motor and the galvanizing drum is maintained.
  • the separation advantageously avoids an entry of ignition sparks into the atmosphere above the plating drum.
  • a chain as a traction means, for example, a toothed belt or other traction means can be used.
  • the driving force is transmitted from the drive unit to a drive element in the form of a gear 30, which is frontally attached to the galvanizing drum.
  • the drive member 30 is seated on a bearing 7 for rotatably supporting the plating drum.
  • a corresponding bearing 8 is also provided at the other end of the galvanizing drum.
  • At this end of the galvanizing drum for this purpose provided without a sprocket end cap 9, which is otherwise approximately identical to the drive element 30, is provided.
  • conductive elements 60 are introduced, for example, copper rods. About this occurs an introduction of electricity in the interior of the camp.
  • a tube 61 for example made of metal or a Plastic arranged.
  • a resin coating especially a phenolic resin coating.
  • a foaming of the tube 61 may be provided for example with PU foam for insulation.
  • the tube 61 may for example consist of a plastic such as Techtron®, in which case no coating and / or foaming is required.
  • the tube 61 is connected to a bearing 62 enclosing the bearing. This is sealed with respect to the bearing in the region of the supply of the conductive element 60 with an O-ring 63.
  • the cuff 62 is, however, not visible in Figure 1, of two halves, which are connected to each other via screws.
  • the two bearings 7, 8 are constructed from a plurality of nested parts.
  • the conductive element 60 projects into a copper core 70 or 80. This is covered against external influences with a bearing cap 71, 81, which is connected by screws 72, 82 with the copper core. Since the plating drum hangs on a support frame 10 of the device 1 via the tubes 61 and the cuffs 62 surrounding the bearings outside, no shaft is guided centrally through the bearings. Nevertheless, the bearings 7.8 have a respective inner passage opening 73, 83. Through these passage openings 73, 83 electrolyte can be introduced into the interior of the plating drum.
  • the two through-openings 73, 83 are covered in the interior 50 of the plating drum by an aperture element 74, 84.
  • the diaphragm elements have a number of openings 75,85, so that the electrolyte can be injected distributed in the interior of the galvanizing drum.
  • the aperture elements 74,84 are each mounted on aperture elements 76, 86 with a larger diameter, which in turn are fastened by screws 77, 87 to a brass plate 78, 88.
  • the brass plates have a diameter such that they cover substantially the entire inside diameter of the plating drum.
  • the brass plates are connected by screws 79, 89 of conductive material with the copper cores 70, 80 of the bearings 7, 8, so that the brass plates via a power supply to the interior of the galvanizing drum can be done.
  • the screws 79, 89 are covered by the diaphragm element 76 and 86, respectively, to prevent the brass plate in this region of the screws from coming into direct contact with the injected electrolyte.
  • the screws are current-carrying, material which is basically to be deposited can also be grown on them, so that a covering of the screws by the diaphragm elements proves to be advantageous.
  • the diaphragm elements are to avoid an unwanted coating, since they directly the through holes 73,83, is flowed through the electrolyte, surrounded, not of a conductive material, but in particular of a plastic, such as Techtron®, PVDF, PPS or PEEK.
  • the screws 77, 87 which are screwed through the aperture elements 76, 86 into the brass plate, are preferably made of such a non-conductive material to avoid coating them.
  • the insulating sleeve 90 is preferably made of a plastic, such as Techtron®, PVDF, PPS, etc.
  • the insulating sleeve 90 is additionally sealed against creep of electrolyte between the diaphragm element 76, 86 and sleeve 90 and sleeve 90 and bearing cap 71, 81 by seals 125 ,
  • an air gap 35 is left between the brass plate and the drive element 30. Since electrolyte could penetrate through this air gap 35 and reach the current-carrying parts of the bearing, an insulating insert 91 is provided to prevent growth in the region of the drive element and the end cover 9.
  • the insulating insert preferably consists of Techtron®, PVDF, PPS, etc.
  • a bearing bush 92 which sits on the copper core 70, 80 and on which the drive element 30 runs. To avoid this, it also consists of a plastic, in particular polyetheretherketone (PEEK), which is a hard, milled plastic, so that he as Bushing instead of the usual use of a stainless steel bushing is suitable.
  • PEEK polyetheretherketone
  • this is at least partially coated with a resin on the back.
  • a resin coating is particularly suitable Halar.
  • a respective seal 93 is provided in order to prevent ingress of electrolyte between diaphragm element 76, 86 and brass plate 78, 88.
  • numerous other seals are provided at joints between individual parts of the bearing 7 and 8, so that here also an intrusion of electrolyte between the individual parts and thus the risk of growth of coating material, especially on the outer sides of the Bearings 7, 8 can be avoided.
  • the casing of the galvanizing drum is formed by six drum skin wall elements 94, which can be particularly well taken from the top view of the galvanizing drum in FIG. Between the drum side wall elements 94 stiffening ribs 95 are arranged, at which bar contacts 96 are arranged in the direction of the interior of the galvanizing drum.
  • the strip contacts serve to transfer electricity in the longitudinal direction of the galvanizing drum.
  • the brass plates 78, 88 have at the outer edge in each case a groove 98 into which engages a projecting portion 99 of the respective sliding contact.
  • An attachment of the casing to the drive element 30 and the end cover 9 is made at the end of the stiffening ribs via releasable fastening means, such as screws 100.
  • To open the plating drum and removing a coated batch at least one drum side wall element is designed to be removable.
  • the diaphragm elements 74, 84, 76, 86 and the strip contacts 96 and the casing of the galvanizing drum preferably have chamfers 174, 176, 186.
  • the Choice of the angle of chamfering can be done here matched to the substrates to be coated.
  • an upper segment of the brass plate is provided with an insulating member 101 made of a non-conductive material. This is designed as a ring segment and fixed on the brass plate by screws 102.
  • the latter consist of a non-conductive material, such as Techtron®, PVDF, PPS, etc., in order to avoid the buildup of coating material, since they are connected to the live brass plate.
  • an injection tube 103 may also be provided for injecting the electrolyte, as shown in FIG. This is releasably secured by fastening flanges 104, 105 on the two panel elements 76, 86 by screwing.
  • fastening flanges 104, 105 is welded to the injection pipe, in the other mounting flange 104, the injection pipe is inserted so that this can take place a length compensation and the assembly is facilitated.
  • the injection tube has openings 106 directed downwards to the substrates to be coated, so that they can be subjected to particularly good contact with the electrolyte.
  • the injection tube can be made of a non-conductive material, such as a plastic, and used only for injecting the electrolyte. Alternatively, it may also be made of a conductive material such as a metal. Upon selection of a conductive material, it may also serve to supply power to the interior 50 of the plating drum. In the latter case, the injection tube is then connected to a conductive part of the bearing, in particular detachably, for example via screws with the conductive brass plate. However, it may also be connected to an insulated part so that it is insulated despite the use of a conductive material such as a metal.
  • various openings are provided in the region of the end faces of the plating drum, some of which are connected to the conductive core of the bearings, others not so that the injection tube can be installed either conductive or non-conductive.
  • the openings may be regularly offset at an angle of 60 ° to each other.
  • the injection pipe can be insulated, ie non-conductive, installed, above all if the substrates to be coated are quite heavy, so that there would be a risk of damage, for example of a plastic pipe.
  • FIGS. 5a, 5b and 6 show a further embodiment of a current-carrying element in the form of a doctor element, which can be introduced into the interior 50 of the plating drum.
  • the embodiments of doctor elements 110, 120 shown in these figures have three arms 111, 112, 113 and 121, 122, 123, via which they can be attached to the strip contacts 96.
  • the doctor elements at the ends of their arms recesses 114 and 124, respectively. With these they can embrace the strip contacts 96 and clamped or clipped to these.
  • this is substantially flat, wherein the one arm 111 is composed of two parts.
  • At least one angled member 115 is disposed adjacent to the recess 114 so that the ledge contact 96 inserted into the recess will rest on it and be secured thereto, e.g. can be attached via a screw.
  • the ends of the arms are designed to be angled, so that the doctor element can be plugged transversely onto the strip contacts or onto pins or the like projecting into the interior 50 of the galvanizing drum.
  • the frontal view of the galvanizing drum according to FIG. 6 shows the doctoring element according to FIG. 5a mounted within a galvanizing drum.
  • an element 116 of a non-conductive material such as Techtron®.
  • This element 116 may be formed, for example, in a trapezoidal shape or also in a T-shape, as shown in FIG.
  • the squeegee element is made of a conductive material, e.g. Copper or steel, like V4A.
  • the galvanizing drum according to FIG. 7 is shown there only in a detailed detail in FIG Area of the bearing 7 is shown, not or not only on the power supply device 6, but suspended on separate support arms 12 on the support frame. Furthermore, the drive element 31 and the end cover 9 fastened to the galvanizing drum are not formed as one-piece cranked, but rather in two or three parts, the individual rings being connected to one another via screws. Behind the brass plate 78 extends a flat ring 32, which has a larger diameter than the brass plate and is designed to connect to the drum side wall elements. On the outside of two further rings 33, 34 are arranged concentrically with each other and attached to the ring 32 via screws.
  • FIGS. 8 and 9 show galvanizing drums 5 coupled to each other in such a way that two are arranged side by side and two above the other.
  • the supply of electrolyte takes place in each case at the outwardly facing ends of the galvanizing drums.
  • the drive elements are arranged there. Instead of four galvanizing drums, more or fewer galvanizing drums can be coupled together.

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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)
EP05015407A 2005-07-15 2005-07-15 Procédé de déposition galvanique de métaux ou d'alliages de métaux au moyen d'un tonneau de galvanisation Withdrawn EP1743959A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05015407A EP1743959A1 (fr) 2005-07-15 2005-07-15 Procédé de déposition galvanique de métaux ou d'alliages de métaux au moyen d'un tonneau de galvanisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05015407A EP1743959A1 (fr) 2005-07-15 2005-07-15 Procédé de déposition galvanique de métaux ou d'alliages de métaux au moyen d'un tonneau de galvanisation

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EP1743959A1 true EP1743959A1 (fr) 2007-01-17

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114574919A (zh) * 2020-11-18 2022-06-03 杨凌美畅新材料股份有限公司 电镀金刚石线锯模块化滚筒装置及自动化设备
CN116065218A (zh) * 2022-06-15 2023-05-05 张进京 一种自动化电镀生产线

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1695795A (en) * 1927-04-14 1928-12-18 William E Belke Plating tank
US1916465A (en) * 1929-04-08 1933-07-04 Western Cartridge Co Process and apparatus for electroplating projectiles
US2498128A (en) * 1946-04-13 1950-02-21 Frederic B Stevens Inc Apparatus for electroplating workpieces
DE2837753A1 (de) 1978-08-30 1980-03-13 Linnhoff Ohg Wilhelm Einrichtung zur fluessigkeitsbehandlung von massenteilen in einer rotierenden trommel
DE3019719A1 (de) 1980-05-23 1981-12-03 Richard Tscherwitschke GmbH, Kunststoff-Apparate und Ablufttechnik, 7022 Leinfelden-Echterdingen Vorrichtung zum chargenweisen oberflaechenbehandlung von werkstuecken, insbesondere zum galvanisieren
DE3236138A1 (de) 1982-09-29 1984-03-29 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zum galvanischen abscheiden von aluminium
DE8700009U1 (de) 1987-01-02 1987-05-07 Blasberg Anlagentechnik GmbH, 5650 Solingen Vorrichtung zur Elektrolytbehandlung kleinformatiger Werkstücke
DD285129A5 (de) 1989-06-15 1990-12-05 Veb Sachsenring Automobilwerke Zwickau,Dd Galvanisiertrommel mit innenanode
US4994163A (en) * 1990-05-10 1991-02-19 Lin Sheng R Rotatable wastewater metal-reclaimation device
DE4438208C1 (de) 1994-10-26 1996-02-01 Simon Karl Metallwaren Vorrichtung zum Galvanisieren von Teilen in Trommelbädern
DE4444103A1 (de) 1994-12-10 1996-06-13 Hans Henig Trommelaggregat
DE19717789A1 (de) 1997-04-26 1998-10-29 Dieter Hinterberger Galvanisieranlage
EP1279751A1 (fr) 2001-07-28 2003-01-29 Aluminal Oberflächtentechnik GmbH & Co. KG Appareil pour la deposition d' aluminium ou d'alliage d'aluminium à partir des electrolytes contenant des alkyles d'aluminium

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1695795A (en) * 1927-04-14 1928-12-18 William E Belke Plating tank
US1916465A (en) * 1929-04-08 1933-07-04 Western Cartridge Co Process and apparatus for electroplating projectiles
US2498128A (en) * 1946-04-13 1950-02-21 Frederic B Stevens Inc Apparatus for electroplating workpieces
DE2837753A1 (de) 1978-08-30 1980-03-13 Linnhoff Ohg Wilhelm Einrichtung zur fluessigkeitsbehandlung von massenteilen in einer rotierenden trommel
DE3019719A1 (de) 1980-05-23 1981-12-03 Richard Tscherwitschke GmbH, Kunststoff-Apparate und Ablufttechnik, 7022 Leinfelden-Echterdingen Vorrichtung zum chargenweisen oberflaechenbehandlung von werkstuecken, insbesondere zum galvanisieren
DE3236138A1 (de) 1982-09-29 1984-03-29 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zum galvanischen abscheiden von aluminium
DE8700009U1 (de) 1987-01-02 1987-05-07 Blasberg Anlagentechnik GmbH, 5650 Solingen Vorrichtung zur Elektrolytbehandlung kleinformatiger Werkstücke
DD285129A5 (de) 1989-06-15 1990-12-05 Veb Sachsenring Automobilwerke Zwickau,Dd Galvanisiertrommel mit innenanode
US4994163A (en) * 1990-05-10 1991-02-19 Lin Sheng R Rotatable wastewater metal-reclaimation device
DE4438208C1 (de) 1994-10-26 1996-02-01 Simon Karl Metallwaren Vorrichtung zum Galvanisieren von Teilen in Trommelbädern
DE4444103A1 (de) 1994-12-10 1996-06-13 Hans Henig Trommelaggregat
DE19717789A1 (de) 1997-04-26 1998-10-29 Dieter Hinterberger Galvanisieranlage
EP1279751A1 (fr) 2001-07-28 2003-01-29 Aluminal Oberflächtentechnik GmbH & Co. KG Appareil pour la deposition d' aluminium ou d'alliage d'aluminium à partir des electrolytes contenant des alkyles d'aluminium
WO2003012176A1 (fr) * 2001-07-28 2003-02-13 Aluminal Oberflächentechnik Gmbh & Co. Kg Procede de separation galvanique de l'aluminium ou d'alliages d'aluminium a partir d'electrolytes organometalliques renfermant des alkyl-aluminium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114574919A (zh) * 2020-11-18 2022-06-03 杨凌美畅新材料股份有限公司 电镀金刚石线锯模块化滚筒装置及自动化设备
CN116065218A (zh) * 2022-06-15 2023-05-05 张进京 一种自动化电镀生产线

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