EP0042503B1 - Apparatus for the electroplating of aluminium - Google Patents

Apparatus for the electroplating of aluminium Download PDF

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Publication number
EP0042503B1
EP0042503B1 EP81104182A EP81104182A EP0042503B1 EP 0042503 B1 EP0042503 B1 EP 0042503B1 EP 81104182 A EP81104182 A EP 81104182A EP 81104182 A EP81104182 A EP 81104182A EP 0042503 B1 EP0042503 B1 EP 0042503B1
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EP
European Patent Office
Prior art keywords
electrodeposition
container
drum
electroplating
electrodeposition tank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81104182A
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German (de)
French (fr)
Other versions
EP0042503A1 (en
Inventor
Klaus Ing. grad. Stöger
Siegfried Dr. Rer.Nat. Dipl.-Chem. Birkle
Johann Gehring
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Siemens AG
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Siemens AG
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Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT81104182T priority Critical patent/ATE4511T1/en
Publication of EP0042503A1 publication Critical patent/EP0042503A1/en
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Publication of EP0042503B1 publication Critical patent/EP0042503B1/en
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
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/42—Electroplating: Baths therefor from solutions of light metals
    • C25D3/44—Aluminium
    • 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

Definitions

  • the invention relates to a device for the galvanic deposition of aluminum from aprotic, oxygen-free and water-free, organoaluminum electrolytes, with an airtightly closable and heatable electroplating trough which can be charged with an inert gas, a rotatable electroplating drum arranged inside the electroplating trough, one in connection with the electroplating trough standing storage container for the electrolyte and two further containers for storing inert liquids.
  • a device of this type has become known from DE-PS 2537285.
  • the electroplating drum has to be removed from the electroplating trough for loading and unloading, which is not only very cumbersome and time-consuming, but also requires correspondingly large insertion and removal openings for the electroplating drum.
  • the organoaluminum electrolytes produced under oxygen- and water-free conditions must be kept in the absence of air, since any contact with air by reaction with oxygen and air humidity results in a considerable reduction in the conductivity and thus in the service life. For this reason, electroplating with such electrolytes must be carried out with the exclusion of air.
  • the invention has for its object to provide a device in which for the loading and unloading of the electroplating drum with bulk material, it no longer needs to be removed from the electroplating trough.
  • This object is achieved according to the invention in that, for filling the electroplating drum, a transport device for the parts to be treated, which leads into the interior of the electroplating trough via a lock, is provided, which ends above a closable opening of the electroplating drum, in that the opening and closing of the electroplating drum can be made outside and that for emptying the electroplating drum an inert gas and inert liquid can be provided, which is arranged below the electroplating trough and communicates with it via a lockable, tubular connector.
  • the problem of loading the electroplating drum can be solved in a simple manner in that the transport device leading into the interior of the electroplating trough is guided through an obliquely ascending channel, the end of which is located outside the electroplating trough and is immersed in a container of a liquid lock filled with inert liquid .
  • the container filled with inert liquid is flanged close to the electroplating trough, the channel receiving the transport device being supported in a sealing manner against the container of the liquid lock by at least one partition.
  • the drain container expediently contains a perforated basket which can be removed via a laterally arranged, airtight sealable opening.
  • the part of the electroplating drum immersed in the electrolyte is surrounded by two anodes, which are mutually adjustable in such a way that they form a passage for the bulk material to be emptied.
  • an inert gas storage container is connected via valves to the electroplating trough, the drain container and the electrolyte storage container, the control of the corresponding valves taking place in such a way that a closed inert gas circuit is created.
  • two electroplating drums are arranged in the electroplating trough, so that two batches can be run simultaneously under conditions which are sometimes unequal.
  • the electroplating trough 1 is designated, which is sealed airtight with a lid 2.
  • the electroplating trough 1 is provided with a heater 3 and has an outlet connection 4, to which a tubular connecting piece 5 is flanged, which has a ball valve 6. This can be operated using a hand lever 7.
  • a drain container 8 designed as a decanter lock is flanged, in which a perforated filling basket 9 with a bevelled bottom 10 is accommodated.
  • the filling basket 9 can be removed through an opening 11 arranged on the side of the drain container 8, which opening can be closed air-tight with the aid of a lid 12.
  • a three-way valve 14 is connected via a line 13, which is connected via a line 15 to an airtight electrolyte reservoir 16.
  • the electrolyte reservoir 16 is in communication.
  • the electrolyte reservoir 16 is equipped with a pressure relief valve 17.
  • the three-way valve 14 is connected via a line 18 and a valve 19 to a container 20, in which an inert liquid 21 used for flooding or flushing the drain container 8 can be drained. Furthermore, the line 18 is connected via a valve 22 and line 23 to a further container 24, in which an inert liquid 25 used for washing the bulk material in the discharge container 8 can be discharged.
  • the two containers 20 and 24 are provided with pressure relief valves 26 and 27.
  • the containers 20 and 24 are arranged below the three-way valve 14 so that the inert liquids 21 and 25 can get in there by means of gravity.
  • the inert liquids 21 and 25 can be pumped via lines 28 and 29 into reservoirs 32 and 33 with the aid of pumps 30 and 31.
  • an evaporator 35 is switched on in line 29 via a valve 34, with which the inert liquid 25 used for washing can be cleaned of enriched electrolyte.
  • the containers 32 and 33 are also equipped with pressure relief valves 36 and 37.
  • the containers 32 and 33 are normally filled with inert liquids 21 and 25, as indicated by dashed lines 38 and 39, which indicate the liquid level.
  • the supply containers 32 and 33 are connected to the drain container 8 via lines 40 and 41. Valves 42 and 43 for controlling the inert liquids 21 and 25 are arranged in the lines 40 and 41.
  • a charging lock 45 which is designed as a liquid lock, is provided for loading the electroplating drum 44 arranged in the electroplating trough.
  • the charging lock consists of a container 46 in which inert liquid 47 is located, the level 48 being indicated by a dashed line.
  • the container 46 is attached to the electroplating trough 1 in an airtight manner by means of a flange 49.
  • a diaphragm 50 is attached with the aid of a diaphragm 50, in which a transport device 52 is guided into the interior of the electroplating trough 1 in the manner of a conveyor belt.
  • the end 53 of the conveyor belt ends above an opening 54 of the electroplating drum 44.
  • the channel 51 is extended on the other side so far that it is fully immersed in the inert liquid 47, so that the bulk material which can be fed in with the aid of a further conveyor belt 55 reaches the end of the conveyor belt 52 and from there via the end 53 into the electroplating drum 44.
  • the conveyor belt 55 is completely immersed in the inert liquid 47.
  • the conveyor belt 55 is loaded via an opening 56 in the container 46, which can be closed with the aid of a cover 57.
  • the panel 50 is arranged airtight between the container 46 and the channel 51 and supports the channel 51. To increase the stability, several panels 50 can be provided. Therefore, the end of the channel 51 reaching inside the electroplating drum 1 can be loosely inserted through an opening 58 into the inside of the electroplating drum 1. This considerably simplifies assembly.
  • the electroplating drum 44 has a hexagonal cross section.
  • the drum jacket is perforated in a manner known per se.
  • the axis of the electroplating drum 44 is designated, which is rotatably mounted in the trough 1.
  • the electroplating drum 44 is equipped with a ring gear 60 which is in engagement with a gear 61.
  • the gear is driven by an electric motor, not shown in the drawing.
  • the opening 54 of the electroplating drum 44 can be closed with a cover 62. Since the inside of the electroplating drum 1 is sealed airtight, the cover 62 can be lifted off with the aid of a lifting rod 63, which is sealed through the cover 2 of the electroplating trough 1 with the aid of a guide 64.
  • the lifting rod 63 can be moved both in the axial direction and about its axis of rotation 67.
  • an unlocking mechanism is arranged, by means of which the unlocking pins 69 arranged on the cover 62 can be actuated. These unlocking pins 69 come into positive connection with corresponding bores on the edge of the opening 54 of the electroplating drum 44.
  • the electroplating drum 44 is surrounded by two anodes 70 arranged in mirror image, the anode connections 71 being led out of the electroplating trough 1 with the aid of anode bushings 72.
  • the anodes 70 can be adjusted by moving the anode connections 71 towards the wall of the electroplating trough 1, as indicated in dashed lines. This opens an opening 73 so that the contents of the electroplating drum 44 can be emptied into the drain container 8 via the outlet connection 4.
  • a stick-shaped cathode 75 is fastened to the axis 59 by means of a rope 74 made of conductive material and can act effectively with the bulk material 76 located in the electroplating drum 44.
  • a cathode connection 78 is connected to the axis 59 via a further cable 77, which leads through a feedthrough 79 the cover 2 of the galvanizing trough 1 is guided. Furthermore, the cover 2 of the electroplating trough also has a pressure relief valve 80.
  • an inert gas container 81 is provided which is connected to the electroplating trough 1 via a line 82 and valve 83 and to the electrolyte storage container 16 via a line 84 and valve 85.
  • the inert gas container 81 is connected to the connecting piece 5 via a further line 86 and valve 87.
  • the electrolyte storage container 16 is connected via a line 88 to the electroplating trough 1, so that electrolyte can be pumped into the electroplating trough 1 if necessary with the aid of a pump 80 in order to be able to maintain a predetermined level 90, as indicated by dashed lines.
  • the space of the container 46 behind the panel 50 is connected to the electrolyte storage container 16 via a line 91 and valve 92.
  • the container 46 is also equipped with a pressure relief valve 96.
  • the drain container 8 can either be ventilated or acted upon by inert gas 25 via valve 94 and a line 93.
  • a valve 95 on the inert gas reservoir 81 is required for N 2 requirements from the bottle.
  • the lifting rod 63 By turning the lifting rod 63 in the direction of arrow 65, the cover 62 is unlocked by pulling the unlocking pins 69 out of the corresponding bores in the wall of the opening 54 of the electroplating drum 44. Then the lifting rod 63 with the cover 62 attached to it is in the starting position shown in FIG hazards.
  • the inert gas storage container 81 serves for pressure compensation in the event of volume changes in the electroplating trough 1, in the connecting piece 5 and in the drain container 8 of the decharging lock 45. No inert gas is lost through this inert circuit.
  • the operations to be carried out which will be described in more detail below, can always be carried out with 100% inert gas. Any moisture and air that have been introduced into the inert gas storage container 81 are chemically removed by Al-triethyl. After loading the electroplating drum 44, the valve 83 is closed.
  • the electroplating drum 44 is rotated clockwise by 30 °.
  • the electroplating current is switched off.
  • the anodes 70 are extended into the dashed position so that the opening 73 is created.
  • the cover 62 of the electroplating drum 44 is lifted off with the aid of the lifting rod 63 in the manner described above.
  • the air in the container 20 could escape through the pressure relief valve 26.
  • the end of the flooding process can be carried out, for example, by means of a level control, but this is not described further here.
  • the valves 19 and 87 and the three-way valve 14 were then closed. Thus, only inert gas from the inert gas storage container 81 is located in the container 8.
  • the ball valve 6 is now opened, so that electrolyte flows from the electroplating trough 1 through the connecting piece 5 into the drain container 8, the displaced inert gas flowing into the electroplating trough 1.
  • the valve 83 is opened to equalize the pressure.
  • the drum is turned through 180 ° into the emptying position, so that the bulk material 76 falls via the connecting piece 5 into the filling basket 10 of the storage container 8.
  • electrolyte is pushed back from the storage container 8 into the electroplating trough 1, so that there is very little electrolyte in the drain container 8.
  • the volume of electrolyte still remaining can be limited to a minimum by appropriate dimensioning of the volume of the drain container 8.
  • the three-way valve 14 is now set so that a connection is made from the drain tank 8 to the electrolyte reservoir 16, specifically via the lines 13 and 15.
  • the valves 85 and 87 are opened so that the inert gas of the. Is under an inert gas atmosphere
  • Electrolyte storage container 16 can compensate via valve 85 to the inert gas storage container 81, while the volume of the discharged electrolyte in the discharge container via valve 87 is replaced by inert gas. It is assumed that there is always a 100% inert gas atmosphere in the electrolyte reservoir 16.
  • the electrolyte located in the electrolyte storage container 16 is pumped back into the electroplating trough 1 by means of a pump 89 via line 88, the electrolyte volume being replaced by inert gas via valve 85. Then valve 85 is closed.
  • valve 43 is opened.
  • the inert liquid 25 intended for washing flows from the storage container 33 via line 41 into the discharge container 8.
  • the inert atmosphere in the discharge container 8 can flow via valve 87 and line 86 into the inert gas storage container 81.
  • the valve 43 is closed by the reservoir 33.
  • the three-way valve 14 is now set so that the drain container 8 can flow via lines 18 and 23 into the container 24 when the valve 22 is opened.
  • the inert liquid 25 flowing out of the drain container 8 is replaced by air by opening the valve 94 via line 93.
  • valve 22 and the three-way valve 14 are then closed.
  • the drain container 8 By removing the lid 12, the drain container 8 can be opened and the filling basket 9 with the washed bulk material 76 can be removed. It is noted that the washing process can be repeated any number of times in the manner described.
  • the emptied filling basket 9 is returned to the drain container 8 and the drain container 9 is closed in an airtight manner by putting on the cover 12.
  • valve 42 When the valve 42 is opened, the drain container 8 is flooded with inert liquid 21 from the reservoir 32 by opening the valve 94, as a result of which the displaced air can escape via valve 94. Thereafter, valve 94 is closed and inert gas is admitted via valve 86 into drain tank 8 via line 86.
  • the three-way valve 14 is now set so that the washing liquid located in the drain container 8 can be drained into the container 20 via the line 18 and the open valve 19, the drained liquid being replaced via valve 87 with inert gas.
  • the initial state is restored after the inert liquids 21 and 25 have in the meantime been conveyed back from the containers 20 and 24 by means of the pumps 30 and 31 into the storage containers 32 and 33.
  • the inert liquid 25 used for washing is cleaned of enriched electrolyte with the help of the evaporator 35.
  • the electroplating drum 44 is returned to the position shown in FIG. 1 for the next electroplating process and the anodes 70 are returned to the strongly extended position shown in FIG. 1.
  • FIG. 1 An embodiment is shown in the figure in which two electroplating drums 101 and 102 are accommodated in one electroplating trough 100. While a middle anode 103 is fixed, the two outer anodes 104 and 105 are adjustable to the outside, so that the bulk material to be galvanized can be drained into a common drain container 108 via a common connecting piece 106, which contains a ball valve 107.
  • the drain container 108 contains a filling basket 109 for removing the bulk material after removing a cover 110.
  • a separate loading device 111 and 112 is provided for each of the electroplating drums 101 and 102, which are designed in accordance with the exemplary embodiment according to FIG. Furthermore, there are two lifting rods 114 and 115 in a cover 113 for opening the electroplating drums 101 and 102, respectively.
  • the control of the device according to FIG. 2 takes place in a manner corresponding to that of the device according to FIG. 1.
  • the two electroplating drums 101 and 102 can be charged simultaneously or alternately, but the electrolyte from the electrolyte storage container 16 is monitored by level monitors must be maintained in the electroplating trough 100. For this reason, parts with the same effect in FIG. 2 are provided with the same reference symbols as in FIG. 1.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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  • Materials Engineering (AREA)
  • Metallurgy (AREA)
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  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
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Abstract

A system for the galvanic deposition of aluminum from aprotic organo-aluminum electrolytes free from oxygen and water wherein it is not necessary to remove a galvanizing drum from its associated galvanizing tank in order to load and unload work pieces being galvanized from the drum.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum galvanischen Abscheiden von Aluminium aus aprotischen, sauerstoff- und wasserfreien, aluminiumorganischen Elektrolyten, mit einem luftdicht verschließbaren und mit einem Inertgas beaufschlagbaren, beheizbaren Galvanisiertrog, einer innerhalb des Galvanisiertroges angeordneten drehbaren Galvanisiertrommel, einem mit dem Galvanisiertrog in Verbindung stehenden Vorratsbehälter für den Elektrolyten und zwei weiteren Behältern zu Speicherung von Inertflüssigkeiten.The invention relates to a device for the galvanic deposition of aluminum from aprotic, oxygen-free and water-free, organoaluminum electrolytes, with an airtightly closable and heatable electroplating trough which can be charged with an inert gas, a rotatable electroplating drum arranged inside the electroplating trough, one in connection with the electroplating trough standing storage container for the electrolyte and two further containers for storing inert liquids.

Eine Vorrichtung dieser Art ist durch die DE-PS 2537285 bekanntgeworden. Bei dieser bekannten Vorrichtung muß die Galvanisiertrommel zum Be- und Entladen aus dem Galvanisiertrog entnommen werden, was nicht nur sehr umständlich und zeitaufwendig ist, sondern auch entsprechend große Ein- und Ausbringöffnungen für die Galvanisiertrommel erfordert. Bekanntlich müssen die unter sauerstoff- und wasserfreien Bedingungen hergestellten aluminiumorganischen Elektrolyte unter Luftabschluß gehalten werden, da jede Berührung mit Luft durch Reaktion mit Sauerstoff und Luftfeuchtigkeit eine erhebliche Verringerung der Leitfähigkeit und damit der Lebensdauer zur Folge hat. Aus diesem Grunde muß das Galvanisieren mit derartigen Eiektrolyten unter Luftabschluß erfolgen. Bei der bekannten Vorrichtung laßt sich dies nur dadurch erreichen, daß der Elektrolyt nach dem Galvanisieren unter Schutzgasatmosphäre in seinen Vorratsbehälter zurückgepumpt wird. Vor dem Wiedereinfüllen des Elektrolyten in den Galvanisiertrog nach erneutem Beladen der Galvanisiertrommel muß der Galvanisiertrog mit Inertflüssigkeit geflutet und anschließend unter Inertgasatmosphäre gesetzt werden. Dies ist umständlich und zeitaufwendig.A device of this type has become known from DE-PS 2537285. In this known device, the electroplating drum has to be removed from the electroplating trough for loading and unloading, which is not only very cumbersome and time-consuming, but also requires correspondingly large insertion and removal openings for the electroplating drum. As is known, the organoaluminum electrolytes produced under oxygen- and water-free conditions must be kept in the absence of air, since any contact with air by reaction with oxygen and air humidity results in a considerable reduction in the conductivity and thus in the service life. For this reason, electroplating with such electrolytes must be carried out with the exclusion of air. In the known device, this can only be achieved in that the electrolyte is pumped back into its storage container after the electroplating under a protective gas atmosphere. Before refilling the electrolyte into the electroplating trough after reloading the electroplating drum, the electroplating trough must be flooded with inert liquid and then placed under an inert gas atmosphere. This is cumbersome and time consuming.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zu schaffen, bei der zum Be- und Entladen der Galvanisiertrommel mit Schüttgut diese nicht mehr aus dem Galvanisiertrog entnommen zu werden braucht. Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß zum Füllen der Galvanisiertrommel eine in das Innere des Galvanisiertroges über eine Schleuse führende Transporteinrichtung für die zu behandelnden Teile vorgesehen ist, die über einer verschließbaren Öffnung der Galvanisiertrommel endet, daß das Öffnen und Verschließen der Galvanisiertrommel von außen vornehmbar ist und daß zum Entleeren der Galvanisiertrommel ein mit Inertgas und Inertflüssigkeit beaufschlagbarer Ablaßbehälter vorgesehen ist, der unterhalb des Galvanisiertroges angeordnet ist und mit diesem über ein absperrbares, rohrförmiges Verbindungsstück in Verbindung steht.The invention has for its object to provide a device in which for the loading and unloading of the electroplating drum with bulk material, it no longer needs to be removed from the electroplating trough. This object is achieved according to the invention in that, for filling the electroplating drum, a transport device for the parts to be treated, which leads into the interior of the electroplating trough via a lock, is provided, which ends above a closable opening of the electroplating drum, in that the opening and closing of the electroplating drum can be made outside and that for emptying the electroplating drum an inert gas and inert liquid can be provided, which is arranged below the electroplating trough and communicates with it via a lockable, tubular connector.

Dies hat den Vorteil, daß sich in den mit Inertgas beaufschlagten Galvanisiertrog immer Elektrolyt befindet, da praktisch nur ein geringfügiger Teil desselben in den Ablaßbehälter abfließt. Daher ist es sehr vorteilhaft, wenn der am Verbindungsstück angeflanschte Ablaßbehälter ein Volumen aufweist, das etwa dem Volumen des Inhaltes der Galvanisiertrommel entspricht. Eine einfache Bauweise ergibt sich dadurch, daß das rohrförmige absperrbare Verbindungsstück ein handelsübliches Kugelventil enthält.This has the advantage that there is always electrolyte in the electroplating trough to which inert gas is applied, since practically only a small part of the same flows into the drain container. It is therefore very advantageous if the drain container flanged to the connecting piece has a volume which corresponds approximately to the volume of the contents of the electroplating drum. A simple construction results from the fact that the tubular lockable connecting piece contains a commercially available ball valve.

Das Problem der Beladung der Galvanisiertrommel kann in einfacher Weise dadurch gelöst werden, daß die in das Innere des Galvanisiertroges führende Transporteinrichtung durch einen schräg nach oben ansteigenden Kanal geführt ist, dessen außerhalb des Galvanisiertroges befindliches Ende in einem mit Inertflü$sigkeit gefüllten Behälter einer Flüssigkeitsschleuse eintaucht. Hierbei ist der mit Inertflüssigkeit gefüllte Behälter dicht am Galvanisiertrog angeflanscht, wobei der die Transporteinrichtung aufnehmende Kanal durch mindestens eine Trennwand gegen den Behälter der Flüssigkeitsschleuse dichtend abgestützt ist.The problem of loading the electroplating drum can be solved in a simple manner in that the transport device leading into the interior of the electroplating trough is guided through an obliquely ascending channel, the end of which is located outside the electroplating trough and is immersed in a container of a liquid lock filled with inert liquid . In this case, the container filled with inert liquid is flanged close to the electroplating trough, the channel receiving the transport device being supported in a sealing manner against the container of the liquid lock by at least one partition.

Der Ablaßbehälter enthält zweckmäßigerweise einen perforierten Korb, der über eine seitlich angeordnete, luftdicht verschließbare Öffnung entnehmbar ist.The drain container expediently contains a perforated basket which can be removed via a laterally arranged, airtight sealable opening.

Gemäß einem weiteren Merkmal der Erfindung ist der in den Elektrolyt eingetauchte Teil der Galvanisiertrommel von zwei Anoden umgeben, die derart gegeneinander verstellbar sind, daß sie einen Durchgang für das zu entleerende Schüttgut bilden.According to a further feature of the invention, the part of the electroplating drum immersed in the electrolyte is surrounded by two anodes, which are mutually adjustable in such a way that they form a passage for the bulk material to be emptied.

Vorteilhafterweise steht ein Inertgas-Vorratsbehälter über Ventile mit dem Galvanisiertrog, dem Ablaßbehälter und dem Elektrolyt-Vorratsbehälter in Verbindung, wobei die Steuerung der entsprechenden Ventile derart erfolgt, daß ein in sich geschlossener Inertgaskreislauf entsteht.Advantageously, an inert gas storage container is connected via valves to the electroplating trough, the drain container and the electrolyte storage container, the control of the corresponding valves taking place in such a way that a closed inert gas circuit is created.

Gemäß einer Weiterbildung der Erfindung sind in dem Galvanisiertrog zwei Galvanisiertrommeln angeordnet, so daß gleichzeitig zwei Chargen unter zum Teil ungleichen Bedingungen gefahren werden können.According to a development of the invention, two electroplating drums are arranged in the electroplating trough, so that two batches can be run simultaneously under conditions which are sometimes unequal.

Anhand der Zeichnung, in der zwei Ausführungsbeispiele schematisch dargestellt sind, wird die Erfindung näher erläutert.The invention is explained in more detail with reference to the drawing, in which two exemplary embodiments are shown schematically.

Es zeigen :

  • Figur 1 eine Vorrichtung zum galvanischen Abscheiden von Aluminium in zum Teil vereinfachter schematischer Darstellung und
  • Figur 2 eine Vorrichtung mit zwei Galvanisiertrommeln im Prinzip.
Show it :
  • Figure 1 shows a device for the galvanic deposition of aluminum in a partially simplified schematic representation and
  • Figure 2 shows a device with two electroplating drums in principle.

Mit 1 ist ein Galvanisiertrog bezeichnet, der mit einem Deckel 2 luftdicht verschlossen ist. Der Galvanisiertrog 1 ist mit einer Heizung 3 versehen und weist einen Ablaufstutzen 4 auf, an welchem ein rohrförmiges Verbindungsstück 5 angeflanscht ist, das ein Kugelventil 6 aufweist. Dieses kann mit Hilfe eines Handhebels 7 betätigt werden. An dem Verbindungsstück 5 ist ein als Dechargierschleuse ausgebildeter Ablaßbehälter 8 angeflanscht, in dem ein perforierter Füllkorb 9 mit abgeschrägten Boden 10 untergebracht ist. Der Füllkorb 9 kann durch eine seitlich des Ablaßbehälters 8 angeordnete Öffnung 11 entnommen werden, welche mit Hilfe eines Deckels 12 luftdicht verschließbar ist. Am Boden des Ablaßbehälters 8 ist über eine Leitung 13 ein Dreiwegehahn 14 angeschlossen, der über eine Leitung 15 mit einem luftdicht abgeschlossenen Elektrolyt-Vorratsbehälter 16 in Verbindung steht. Der Elektrolyt-Vorratsbehälter 16 in Verbindung steht. Der Elektrolyt-Vorratsbehälter 16 ist mit einem Überdruckventil 17 ausgestattet.1 with a galvanizing trough is designated, which is sealed airtight with a lid 2. The electroplating trough 1 is provided with a heater 3 and has an outlet connection 4, to which a tubular connecting piece 5 is flanged, which has a ball valve 6. This can be operated using a hand lever 7. On the connecting piece 5, a drain container 8 designed as a decanter lock is flanged, in which a perforated filling basket 9 with a bevelled bottom 10 is accommodated. The filling basket 9 can be removed through an opening 11 arranged on the side of the drain container 8, which opening can be closed air-tight with the aid of a lid 12. At the bottom of the drain container 8, a three-way valve 14 is connected via a line 13, which is connected via a line 15 to an airtight electrolyte reservoir 16. The electrolyte reservoir 16 is in communication. The electrolyte reservoir 16 is equipped with a pressure relief valve 17.

Der Dreiwegehahn 14 steht über eine Leitung 18 sowie einem Ventil 19 mit einem Behälter 20 in Verbindung, in welchen eine zum Fluten bzw. Spülen des Ablaßbehälters 8 benutzte Inertflüssigkeit 21 abgelassen werden kann. Ferner steht die Leitung 18 über ein Ventil 22 und Leitung 23 mit einem weiteren Behälter 24 in Verbindung, in welchen eine zum Waschen des Schüttgutes in dem Ablaßbehälter 8 benutzte Inertflüssigkeit 25 abgelassen werden kann. Die beiden Behälter 20 und 24 sind mit Überdruckventilen 26 und 27 versehen. Die Behälter 20 und 24 sind unterhalb des Dreiwegehahnes 14 angeordnet, so daß die Inertflüssigkeiten 21 und 25 mit Hilfe der Schwerkraft dort hineingelangen können. Über Leitungen 28 und 29 können die Inertflüssigkeiten 21 und 25 mit Hilfe von Pumpen 30 und 31 in Vorratsbehälter 32 und 33 gepumpt werden. Hierbei ist in die Leitung 29 über ein Ventil 34 ein Verdampfer 35 eingeschaltet, mit welchem die zum Waschen benutzte Inertflüssigkeit 25 von angereichertem Elektrolyten gereinigt werden kann. Auch die Behälter 32 und 33 sind mit Überdruckventilen 36 und 37 ausgestattet. Die Behälter 32 un 33 sind normalerweise mit Inertflüssigkeiten 21 und 25 gefüllt, wie mit gestrichelten Linien 38 und 39 angedeutet ist, die den Flüssigkeitsspiegel angeben. Über Leitungen 40 und 41 stehen die Vorratsbehälter 32 und 33 mit dem Ablaßbehälter 8 in Verbindung. In den Leitungen 40 und 41 sind Ventile 42 und 43 zur Steuerung der Inertflüssigkeiten 21 und 25 angeordnet.The three-way valve 14 is connected via a line 18 and a valve 19 to a container 20, in which an inert liquid 21 used for flooding or flushing the drain container 8 can be drained. Furthermore, the line 18 is connected via a valve 22 and line 23 to a further container 24, in which an inert liquid 25 used for washing the bulk material in the discharge container 8 can be discharged. The two containers 20 and 24 are provided with pressure relief valves 26 and 27. The containers 20 and 24 are arranged below the three-way valve 14 so that the inert liquids 21 and 25 can get in there by means of gravity. The inert liquids 21 and 25 can be pumped via lines 28 and 29 into reservoirs 32 and 33 with the aid of pumps 30 and 31. In this case, an evaporator 35 is switched on in line 29 via a valve 34, with which the inert liquid 25 used for washing can be cleaned of enriched electrolyte. The containers 32 and 33 are also equipped with pressure relief valves 36 and 37. The containers 32 and 33 are normally filled with inert liquids 21 and 25, as indicated by dashed lines 38 and 39, which indicate the liquid level. The supply containers 32 and 33 are connected to the drain container 8 via lines 40 and 41. Valves 42 and 43 for controlling the inert liquids 21 and 25 are arranged in the lines 40 and 41.

Zur Beschickung der im Galvanisiertrog angeordneten Galvanisiertrommel 44 ist eine Chargierschleuse 45 vorgesehen, die als Flüssigkeitsschleuse ausgebildet ist. Die Chargierschleuse besteht aus einem Behälter 46, in dem sich Inertflüssigkeit 47 befindet, wobei das Niveau 48 durch eine gestrichelte Linie angedeutet ist. Der Behälter 46 ist mit Hilfe eines Flansches 49 am Galvanisiertrog 1 luftdicht befestigt. In dem Behälter 46 ist mit Hilfe einer Blende 50 ein schräg nach oben ansteigender Kanal 51 befestigt, in dem eine Transporteinrichtung 52 nach Art eines Förderbandes in das Innere des Galvanisiertroges 1 geführt ist. Das Ende 53 des Transportbandes endet über einer Öffnung 54 der Galvanisiertrommel 44. Der Kanal 51 ist nach der anderen Seite hin so weit verlängert, daß er in die Inertflüssigkeit 47 voll eintaucht, so daß das mit Hilfe eines weiteren Förderbandes 55 aufgebbare Schüttgut auf das Ende des Förderbandes 52 und von dort über das Ende 53 in die Galvanisiertrommel 44 gelangt. Das Förderband 55 ist bei dem Ausführungsbeispiel nach Figur 1 vollständig in die Inertflüssigkeit 47 eingetaucht. Es könnte aber auch schräg von oben in die Inertflüssigkeit 47 eintauchen, damit das Schüttgut leichter auf das Förderband 55 aufgelegt werden kann. Die Beschickung des Förerbandes 55 erfolgt über eine Öffnung 56 des Behälters 46, die mit Hilfe eines Deckels 57 verschltißbar ist. Die Blende 50 ist luftdicht zwischen dem Behälter 46 und dem Kanal 51 angeordnet und stützt den Kanal 51. Zur Erhöhung der Stabilität können mehrere Blenden 50 vorgesehen sein. Daher kann das in das Innere der Galvanisiertrommel 1 reichende Ende des Kanals 51 lose durch eine Öffnung 58 in das Innere der Galvanisiertrommel 1 eingeführt werden. Dies erleichtert ganz erheblich die Montage.A charging lock 45, which is designed as a liquid lock, is provided for loading the electroplating drum 44 arranged in the electroplating trough. The charging lock consists of a container 46 in which inert liquid 47 is located, the level 48 being indicated by a dashed line. The container 46 is attached to the electroplating trough 1 in an airtight manner by means of a flange 49. In the container 46, a diaphragm 50 is attached with the aid of a diaphragm 50, in which a transport device 52 is guided into the interior of the electroplating trough 1 in the manner of a conveyor belt. The end 53 of the conveyor belt ends above an opening 54 of the electroplating drum 44. The channel 51 is extended on the other side so far that it is fully immersed in the inert liquid 47, so that the bulk material which can be fed in with the aid of a further conveyor belt 55 reaches the end of the conveyor belt 52 and from there via the end 53 into the electroplating drum 44. In the exemplary embodiment according to FIG. 1, the conveyor belt 55 is completely immersed in the inert liquid 47. However, it could also dip obliquely from above into the inert liquid 47 so that the bulk material can be placed more easily on the conveyor belt 55. The conveyor belt 55 is loaded via an opening 56 in the container 46, which can be closed with the aid of a cover 57. The panel 50 is arranged airtight between the container 46 and the channel 51 and supports the channel 51. To increase the stability, several panels 50 can be provided. Therefore, the end of the channel 51 reaching inside the electroplating drum 1 can be loosely inserted through an opening 58 into the inside of the electroplating drum 1. This considerably simplifies assembly.

Wie aus Figur 1 zu ersehen ist, weist die Galvanisiertrommel 44 einen hexagonalen Querschnitt auf. Der Trommelmantel ist hierbei in an sich bekannter Weise perforiert. Mit 59 ist die Achse der Galvanisiertrommel 44 bezeichnet, die im Trog 1 drehbar gelagert ist. Die Galvanisiertrommel 44 ist mit einem Zahnkranz 60 ausgestattet, der mit einem Zahnrad 61 im Eingriff steht. Das Zahnrad wird von einem in der Zeichnung nicht dargestellten Elektromotor angetrieben. Die Öffnung 54 der Galvanisiertrommel 44 ist mit einem Deckel 62 verschließbar. Da das Innere der Galvanisiertrommel 1 luftdicht abgeschlossen ist, ist der Deckel 62 mit Hilfe einer Hubstange 63 abhebbar, die durch den Deckel 2 des Galvanisiertroges 1 mit Hilfe einer Führung 64 dicht durchgeführt ist. Wie mit Hilfe der Pfeile 65 und 66 angedeutet ist, kann die Hubstange 63 sowohl in Achsrichtung als auch um ihre Drehachse 67 bewegt werden. Am unteren Ende 68 der Hubstange ist ein in der Zeichnung nicht näher dargestellter Entriegelungsmechanismus angeordnet, mit dessen Hilfe die am Deckel 62 angeordneten Entriegelungsstifte 69 betätigt werden können. Diese Entriegelungsstifte 69 treten mit entsprechenden Bohrungen am Rande der Öffnung 54 der Galvanisiertrommel 44 in formschlüssige Verbindung.As can be seen from FIG. 1, the electroplating drum 44 has a hexagonal cross section. The drum jacket is perforated in a manner known per se. With 59 the axis of the electroplating drum 44 is designated, which is rotatably mounted in the trough 1. The electroplating drum 44 is equipped with a ring gear 60 which is in engagement with a gear 61. The gear is driven by an electric motor, not shown in the drawing. The opening 54 of the electroplating drum 44 can be closed with a cover 62. Since the inside of the electroplating drum 1 is sealed airtight, the cover 62 can be lifted off with the aid of a lifting rod 63, which is sealed through the cover 2 of the electroplating trough 1 with the aid of a guide 64. As indicated by the arrows 65 and 66, the lifting rod 63 can be moved both in the axial direction and about its axis of rotation 67. At the lower end 68 of the lifting rod, an unlocking mechanism, not shown in the drawing, is arranged, by means of which the unlocking pins 69 arranged on the cover 62 can be actuated. These unlocking pins 69 come into positive connection with corresponding bores on the edge of the opening 54 of the electroplating drum 44.

Die Galvanisiertrommel 44 ist von zwei spiegelbildlich angeordneten Anoden 70 umgeben, wobei die Anodenanschlüsse 71 mit Hilfe von Anodendurchführungen 72 aus dem Galvanisiertrog 1 nach außen geführt sind. Die Anoden 70 können durch Bewegen der Anodenanschlüsse 71 zur Wandung des Galvanisiertroges 1 hin verstellt werden, wie in gestrichelten Linien angedeutet ist. Dadurch wird eine Öffnung 73 freigegeben, damit der Inhalt der Galvanisiertrommel 44 über den Ablaufstutzen 4 in den Ablaßbehälter 8 entleert werden kann.The electroplating drum 44 is surrounded by two anodes 70 arranged in mirror image, the anode connections 71 being led out of the electroplating trough 1 with the aid of anode bushings 72. The anodes 70 can be adjusted by moving the anode connections 71 towards the wall of the electroplating trough 1, as indicated in dashed lines. This opens an opening 73 so that the contents of the electroplating drum 44 can be emptied into the drain container 8 via the outlet connection 4.

An der Achse 59 ist über ein Seil 74 aus leitfähigem Material eine knüppelförmige Kathode 75 befestigt, die mit dem in der Galvanisiertrommel 44 befindlichen Schüttgut 76 in Wirkverbindung treten kann. An die Achse 59 ist über ein weiteres Seil 77 ein Kathodenanschluß 78 verbunden, der über eine Durchführung 79 durch den Deckel 2 des Galvanisiertroges 1 geführt ist. Ferner weist der Deckel 2 des Galvanisiertroges noch ein Überdruckventil 80 auf.A stick-shaped cathode 75 is fastened to the axis 59 by means of a rope 74 made of conductive material and can act effectively with the bulk material 76 located in the electroplating drum 44. A cathode connection 78 is connected to the axis 59 via a further cable 77, which leads through a feedthrough 79 the cover 2 of the galvanizing trough 1 is guided. Furthermore, the cover 2 of the electroplating trough also has a pressure relief valve 80.

Ferner ist ein Inertgasbehälter 81 vorgesehen, der über eine Leitung 82 und Ventil 83 mit dem Galvanisiertrog 1 und über eine Leitung 84 und Ventil 85 mit dem Elektrolyt-Vorratsbehälter 16 in Verbindung steht. Über eine weitere Leitung 86 und Ventil 87 steht der Inertgasbehälter 81 mit dem Verbindungsstück 5 in Verbindung. Der Elektrolyt-Vorratsbehälter 16 steht über eine Leitung 88 mit dem Galvanisiertrog 1 in Verbindung, damit mit Hilfe einer Pumpe 80 im Bedarfsfalle Elektrolyt in den Galvanisiertrog 1 gepumpt werden kann, um ein vorgegebenes Niveau 90 einhalten zu können, wie mit gestrichelten Linien angedeutet ist.Furthermore, an inert gas container 81 is provided which is connected to the electroplating trough 1 via a line 82 and valve 83 and to the electrolyte storage container 16 via a line 84 and valve 85. The inert gas container 81 is connected to the connecting piece 5 via a further line 86 and valve 87. The electrolyte storage container 16 is connected via a line 88 to the electroplating trough 1, so that electrolyte can be pumped into the electroplating trough 1 if necessary with the aid of a pump 80 in order to be able to maintain a predetermined level 90, as indicated by dashed lines.

Der Raum des Behälters 46 hinter der Blende 50 steht über eine Leitung 91 und Ventil 92 mit dem Elektrolyt-Vorratsbehälter 16 in Verbindung. Der Behälter 46 ist ferner mit einem Überdruckventil 96 ausgestattet. Über Ventil 94 sowie eine Leitung 93 kann der Ablaßbehälter 8 nach dem Waschen des Schüttgutes 76 mit Inertflüssigkeit 25 entweder gelüftet oder mit Inertgas beaufschlagt werden. Ein Ventil 95 am Inertgas-Vorratsbehälter 81 wird benötigt für N2-Bedarf aus der Flasche.The space of the container 46 behind the panel 50 is connected to the electrolyte storage container 16 via a line 91 and valve 92. The container 46 is also equipped with a pressure relief valve 96. After washing the bulk material 76, the drain container 8 can either be ventilated or acted upon by inert gas 25 via valve 94 and a line 93. A valve 95 on the inert gas reservoir 81 is required for N 2 requirements from the bottle.

Für die Beschreibung der Wirkungsweise der Vorrichtung ist angenommen, daß sich im Galvanisiertrog 1 Aluminium-Elektrolyt befindet und die Galvanisiertrommel 44 eine Stellung einnimmt, in der die mit Deckel 62 verschlossene Öffnung 54 sich unter der Hubstange 63 befindet. Ferner ist angenommen, daß alle Ventile geschlossen sind und sich in den Vorratsbehältern 32 und 33 Inertflüssigkeit zum Spülen bzw. Waschen befindet. Ferner ist in dem Behälter 46 Inertflüssigkeit 47 zur Abdichtung der Chargierschleuse 45 vorhanden. Die Anlage ist also betriebsbereit.For the description of the mode of operation of the device, it is assumed that there is aluminum electrolyte in the electroplating trough 1 and the electroplating drum 44 assumes a position in which the opening 54 closed with the lid 62 is located under the lifting rod 63. Furthermore, it is assumed that all valves are closed and that there is inert liquid for rinsing or washing in the storage containers 32 and 33. Furthermore, inert liquid 47 for sealing the charging lock 45 is present in the container 46. The system is therefore ready for operation.

Für einen Galvanisiervorgang werden nun folgende Arbeitsschritte vollzogen :

  • Öffnen der Galvanisiertrommel 44 durch Abheben des Deckels 62 mit Hilfe der Hubstange 63, in dem die Hubstange 63 in Pfeilrichtung 66 nach unten auf den Deckel 62 zubewegt wird, welcher die Öffnung 54 der Galvanisiertrommel 44 verschließt.
The following steps are now carried out for an electroplating process:
  • Opening the electroplating drum 44 by lifting off the cover 62 with the aid of the lifting rod 63, in which the lifting rod 63 is moved downward in the direction of the arrow 66 onto the cover 62, which closes the opening 54 of the electroplating drum 44.

Durch Drehen der Hubstange 63 in Pfeilrichtung 65 wird der Deckel 62 entriegelt durch Herausziehen der Entriegelungsstifte 69 aus den entsprechenden Bohrungen in der Wandung der Öffnung 54 der Galvanisiertrommel 44. Danach wird die Hubstange 63 mit den daran hängenden Deckel 62 in die in Figur 1 dargestellte Ausgangsstellung gefahren.By turning the lifting rod 63 in the direction of arrow 65, the cover 62 is unlocked by pulling the unlocking pins 69 out of the corresponding bores in the wall of the opening 54 of the electroplating drum 44. Then the lifting rod 63 with the cover 62 attached to it is in the starting position shown in FIG hazards.

Drehung der Galvanisiertrommel 44 um 30° nach links in die in Figur 1 dargestellte Ausgangsstellung. Dann Öffnen des Deckels 57 der Chargierschleuse 45.Rotation of the electroplating drum 44 by 30 ° to the left into the starting position shown in FIG. 1. Then open the cover 57 of the charging lock 45.

Öffnen des Ventils 83 zum Verbinden der Galvanisiertrommel 1 mit dem Inertgas-Vorratsbehälter 81.Opening the valve 83 for connecting the electroplating drum 1 to the inert gas reservoir 81.

Beschicken der Galvanisiertrommel 44 mit Schüttgut 76 mit Hilfe der in Bewegung gesetzten Förderbänder 55 und 52. Das durch das Volumen des zugeführten Schüttgutes 76 aus dem Galvanisiertrog 1 verdrängte Inertgas strömt über das Ventil 83 in den Inertgas-Vorratsbehälter 81. Der Inertgas-Vorratsbehälter 81 dient zum Druckausgleich bei Volumsänderungen im Galvanisiertrog 1, im Verbindungsstück 5 und im Ablaßbehälter 8 der Dechargierschleuse 45. Durch diesen Inertkreislauf geht kein Inertgas verloren. Außerdem können die auszuführenden Vorgänge, die anschließend noch näher beschrieben werden, immer mit 100%igem Inertgas durchgeführt werden. Eventuell eingeschleppte Feuchtigkeit und Luft im Inertgas-Vorratsbehälter 81 wird chemisch beseitigt durch AI-Triäthyl. Nach dem Beladen der Galvanisiertrommel 44, Schließen des Ventils 83.Loading the electroplating drum 44 with bulk material 76 with the aid of the conveyor belts 55 and 52 set in motion. The inert gas displaced from the electroplating trough 1 by the volume of the bulk material 76 flowing in flows through the valve 83 into the inert gas storage container 81. The inert gas storage container 81 serves for pressure compensation in the event of volume changes in the electroplating trough 1, in the connecting piece 5 and in the drain container 8 of the decharging lock 45. No inert gas is lost through this inert circuit. In addition, the operations to be carried out, which will be described in more detail below, can always be carried out with 100% inert gas. Any moisture and air that have been introduced into the inert gas storage container 81 are chemically removed by Al-triethyl. After loading the electroplating drum 44, the valve 83 is closed.

Die Galvanisiertrommel 44 wird um 30° im Uhrzeigersinn verdreht.The electroplating drum 44 is rotated clockwise by 30 °.

Verschließen der Galvanisiertrommel 44 mit Deckel 62 durch Absenken der Hubstange 63 und anschließendes entgegengesetztes Drehen in Pfeilrichtung 65, wodurch die Entriegelungsstifte 69 in die zugeordneten Bohrungen in der Wandung der Öffnung 54 der Galvanisiertrommel 44 formschlüssig eingreifen.Closing the electroplating drum 44 with cover 62 by lowering the lifting rod 63 and then turning it in the opposite direction in the direction of arrow 65, as a result of which the unlocking pins 69 engage in a form-fitting manner in the associated bores in the wall of the opening 54 of the electroplating drum 44.

Einschalten des Trommelantriebs, so daß die Galvanisiertrommel 44 über Zahnrad 61 und Zahnkranz 60 zum Galvanisieren mit entsprechender Geschwindigkeit gedreht wird und Anlegen der Galvanisierspannung am Kathodenanschluß 78 und den Anodenanschlüssen 71.Switching on the drum drive so that the electroplating drum 44 is rotated via gear 61 and ring gear 60 for electroplating at a corresponding speed and applying the electroplating voltage to the cathode connection 78 and the anode connections 71.

Nach Beendigung des Galvanisiervorganges Abschalten des Galvanisierstromes.After the electroplating process has ended, the electroplating current is switched off.

Die Anoden 70 werden in die gestrichelte Stellung ausgefahren, damit die Öffnung 73 entsteht.The anodes 70 are extended into the dashed position so that the opening 73 is created.

Der Deckel 62 der Galvanisiertrommel 44 wird mit Hilfe der Hubstange 63 in der zuvor beschriebenen Weise abgehoben.The cover 62 of the electroplating drum 44 is lifted off with the aid of the lifting rod 63 in the manner described above.

Bevor nun die Galvanisiertrommel 44 entladen wird, sind zuvor folgende Vorgänge ausgeführt worden : Durch Öffnen des Ventils 42 wurde der Ablaßbehälter 8 mit Inertflüssigkeit 21 gefüllt, wobei die im Ablaßbehälter 8 befindliche Luft über das geöffnete Ventil 94 entwichen ist. Anschließend wurden beide Ventile geschlossen und das Ventil 87 zum Inertgas-Vorratsbehälter 81 geöffnet. Ferner wurden das Ventil 19 zum Behälter 20 geöffnet und der Dreiwegehahn 14 so verstellt, daß über die Leitung 18 die Spülflüssigkeit vom Ablaßbehälter 8 in den Behälter 20 abfließen konnte. Außerdem strömte Inertgas vom Inertgas-Vorratsbehälter 81 in den Ablaßbehälter 8 über die Leitung 86.Before the electroplating drum 44 is now unloaded, the following operations have been carried out beforehand: by opening the valve 42, the drain container 8 was filled with inert liquid 21, the air in the drain container 8 having escaped through the opened valve 94. Then both valves were closed and the valve 87 to the inert gas reservoir 81 was opened. Furthermore, the valve 19 to the container 20 was opened and the three-way valve 14 was adjusted so that the flushing liquid could flow from the drain container 8 into the container 20 via the line 18. In addition, inert gas flowed from the inert gas storage tank 81 into the discharge tank 8 via the line 86.

Die Luft im Behälter 20 konnte hierbei über das Überdruckventil 26 entweichen. Das Ende des Flutvorganges kann beispielsweise über eine Niveauregelung vorgenommen werden, was hier jedoch nicht weiter beschrieben ist. Danach wurden die Ventile 19 und 87 sowie der Dreiwegehahn 14 geschlossen. Damit befindet sich im Behälter 8 lediglich Inertgas aus dem Inertgas-Vorratsbehälter 81.The air in the container 20 could escape through the pressure relief valve 26. The end of the flooding process can be carried out, for example, by means of a level control, but this is not described further here. The valves 19 and 87 and the three-way valve 14 were then closed. Thus, only inert gas from the inert gas storage container 81 is located in the container 8.

Mit Hilfe des Handhebels 7 wird nun das Kugelventil 6 geöffnet, so daß Elektrolyt aus dem Galvanisiertrog 1 durch das Verbindungsstück 5 in den Ablaßbehälter 8 fließt, wobei das verdrängte Inertgas in den Galvanisiertrog 1 strömt. Zum Druckausgleich wird das Ventil 83 geöffnet. Nun wird die Trommel um 180° in die Entleerungsposition gedreht, so daß das Schüttgut 76 über das Verbindungsstück 5 in den Füllkorb 10 des Vorratsbehälters 8 fällt. Hierbei wird Elektrolyt aus dem Vorratsbehälter 8 in den Galvanisiertrog 1 zurückverdrängt, so daß in dem Ablaßbehälter 8 sich nur sehr wenig Elektrolyt befindet. Durch entsprechende Bemessung des Volumens des Ablaßbehälters 8 kann die noch verbleibende Elektrolytmenge auf ein Minimum begrenzt werden.With the help of the hand lever 7, the ball valve 6 is now opened, so that electrolyte flows from the electroplating trough 1 through the connecting piece 5 into the drain container 8, the displaced inert gas flowing into the electroplating trough 1. The valve 83 is opened to equalize the pressure. Now the drum is turned through 180 ° into the emptying position, so that the bulk material 76 falls via the connecting piece 5 into the filling basket 10 of the storage container 8. Here, electrolyte is pushed back from the storage container 8 into the electroplating trough 1, so that there is very little electrolyte in the drain container 8. The volume of electrolyte still remaining can be limited to a minimum by appropriate dimensioning of the volume of the drain container 8.

Danach wird das Kugelventil 6 geschlossen.Then the ball valve 6 is closed.

Der Dreiwegehahn 14 wird nun so gestellt, daß eine Verbindung vom Ablaßbehälter 8 zum Elektrolyt-Vorratsbehälter 16 hergestellt ist, und zwar über die Leitungen 13 und 15. Zum Druckausgleich werden die Ventile 85 und 87 geöffnet so daß sich das Inertgas des. unter Inertgasatmosphäre stehenden Elektrolyt-Vorratsbehälters 16 über das Ventil 85 zu dem Inertgas-Vorratsbehälter 81 ausgleichen kann, während das Volumen des abgelassenen Elektrolyten im Ablaßbehälter über Ventil 87 durch Inertgas ersetzt wird. Hierbei wird vorausgesetzt, daß sich im Elektrolyt-Vorratsbehälter 16 stets 100%ige Inertgasatmosphäre befindet.The three-way valve 14 is now set so that a connection is made from the drain tank 8 to the electrolyte reservoir 16, specifically via the lines 13 and 15. To equalize the pressure, the valves 85 and 87 are opened so that the inert gas of the. Is under an inert gas atmosphere Electrolyte storage container 16 can compensate via valve 85 to the inert gas storage container 81, while the volume of the discharged electrolyte in the discharge container via valve 87 is replaced by inert gas. It is assumed that there is always a 100% inert gas atmosphere in the electrolyte reservoir 16.

Sobald der Ablaßbehälter 8 völlig entleert ist, wird der Dreiwegehahn 14 geschlossen.As soon as the drain container 8 is completely emptied, the three-way valve 14 is closed.

Der sich im Elektrolyt-Vorratsbehälter 16 befindliche Elektrolyt wird mittels Pumpe 89 über Leitung 88 in den Galvanisiertrog 1 zurückgepumpt, wobei das Elektrolytvolumen durch Inertgas über Ventil 85 ersetzt wird. Danach Schließen des Ventils 85.The electrolyte located in the electrolyte storage container 16 is pumped back into the electroplating trough 1 by means of a pump 89 via line 88, the electrolyte volume being replaced by inert gas via valve 85. Then valve 85 is closed.

Nun wird das Ventil 43 geöffnet. Dadurch fließt die zum Waschen vorgesehene Inertflüssigkeit 25 aus dem Vorratsbehälter 33 über Leitung 41 in den Ablaßbehälter 8. Hierbei kann die Inertatmosphäre im Ablaßbehälter 8 über Ventil 87 und Leitung 86 in den Inertgas-Vorratsbehälter 81 strömen.Now valve 43 is opened. As a result, the inert liquid 25 intended for washing flows from the storage container 33 via line 41 into the discharge container 8. The inert atmosphere in the discharge container 8 can flow via valve 87 and line 86 into the inert gas storage container 81.

Es wird das Ventil 43 vom Vorratsbehälter 33 geschlossen. Der Dreiwegehahn 14 wird nun so gestellt, daß der Ablaßbehälter 8 über Leitungen 18 und 23 in den Behälter 24 fließen kann, wenn das Ventil 22 geöffnet wird. Die aus dem Ablaßbehälter 8 abfließende Inertflüssigkeit 25 wird durch Öffnen des Ventil 94 über Leitung 93 durch Luft ersetzt.The valve 43 is closed by the reservoir 33. The three-way valve 14 is now set so that the drain container 8 can flow via lines 18 and 23 into the container 24 when the valve 22 is opened. The inert liquid 25 flowing out of the drain container 8 is replaced by air by opening the valve 94 via line 93.

Danach werden das Ventil 22 und der Dreiwegehahn 14 geschlossen.The valve 22 and the three-way valve 14 are then closed.

Durch Abnehmen des Deckels 12 kann der Ablaßbehälter 8 geöffnet werden und der Füllkorb 9 mit dem gewaschenen Schüttgut 76 entnommen werden. Es wird bemerkt, daß der Waschvorgang in der beschriebenen Weise beliebig oft wiederholt werden kann.By removing the lid 12, the drain container 8 can be opened and the filling basket 9 with the washed bulk material 76 can be removed. It is noted that the washing process can be repeated any number of times in the manner described.

Der entleerte Füllkorb 9 wird in den Ablaßbehälter 8 zurückgestellt und durch Aufsetzen des Deckels 12 der Ablaßbehälter 9 luftdicht verschlossen.The emptied filling basket 9 is returned to the drain container 8 and the drain container 9 is closed in an airtight manner by putting on the cover 12.

Durch Öffnen des Ventils 42 wird bei geöffnetem Ventil 94 der Ablaßbehälter 8 mit Inertflüssigkeit 21 aus den Vorratsbehälter 32 geflutet, wodurch die verdrängte Luft über Ventil 94 entweichen kann. Danach wird das Ventil 94 geschlossen und über Ventil 87 Inertgas über Leitung 86 in den Ablaßbehälter 8 eingelassen.When the valve 42 is opened, the drain container 8 is flooded with inert liquid 21 from the reservoir 32 by opening the valve 94, as a result of which the displaced air can escape via valve 94. Thereafter, valve 94 is closed and inert gas is admitted via valve 86 into drain tank 8 via line 86.

Der Dreiwegehahn 14 wird nun so eingestellt, daß über Leitung 18 und geöffnetem Ventil 19 die sich im Ablaßbehälter 8 befindliche Waschflüssigkeit in den Behälter 20 entleeren kann, wobei die abgelassene Flüssigkeit über Ventil 87 mit Inertgas ersetzt wird.The three-way valve 14 is now set so that the washing liquid located in the drain container 8 can be drained into the container 20 via the line 18 and the open valve 19, the drained liquid being replaced via valve 87 with inert gas.

Der Ausgangszustand ist wieder hergestellt, nachdem zwischenzeitlich die Inertflüssigkeiten 21 und 25 von den Behältern 20 und 24 mit Hilfe der Pumpen 30 und 31 in die Vorratsbehälter 32 und 33 zurückgefördert wurden. Die zum Waschen verwendete Inertflüssigkeit 25 wird von angereichertem Elektrolyt mit Hilfe des Verdampfers 35 gereinigt. Die Galvanisiertrommel 44 wird für den nächsten Galvanisiervorgang in die in Figur 1 dargestellte Stellung zurückgeführt und die Anoden 70 in die stark ausgezogene Stellung gemäß Figur 1 zurückgebracht.The initial state is restored after the inert liquids 21 and 25 have in the meantime been conveyed back from the containers 20 and 24 by means of the pumps 30 and 31 into the storage containers 32 and 33. The inert liquid 25 used for washing is cleaned of enriched electrolyte with the help of the evaporator 35. The electroplating drum 44 is returned to the position shown in FIG. 1 for the next electroplating process and the anodes 70 are returned to the strongly extended position shown in FIG. 1.

In Figur ist eine Ausführung dargestellt, bei der in einem Galvanisiertrog 100, zwei Galvanisiertrommeln 101 und 102 untergebracht sind. Während eine mittlere Anode 103 feststeht, sind die beiden äußeren Anoden 104 und 105 nach außen verstellbar, so daß das zu galvanisierende Schüttgut über ein gemeinsames Verbindungsstück 106, welches ein Kugelventil 107 enthält, in einen gemeinsamen Ablaßbehälter 108 abgelassen werden kann. Der Ablaßbehälter 108 enthält einen Füllkorb 109 zur Entnahme des Schüttgutes nach Entfernen eines Deckels 110. Für jeden der Galvanisiertrommeln 101 und 102 ist eine eigene Beschickungsvorrichtung 111 und 112 vorgesehen, die entsprechend dem Ausführungsbeispiel nach Figur 1 ausgeführt sind. Ferner sind in einem Deckel 113 zwei Hubstangen 114 und 115 zum jeweiligen Öffnen der Galvanisiertrommeln 101 und 102.An embodiment is shown in the figure in which two electroplating drums 101 and 102 are accommodated in one electroplating trough 100. While a middle anode 103 is fixed, the two outer anodes 104 and 105 are adjustable to the outside, so that the bulk material to be galvanized can be drained into a common drain container 108 via a common connecting piece 106, which contains a ball valve 107. The drain container 108 contains a filling basket 109 for removing the bulk material after removing a cover 110. A separate loading device 111 and 112 is provided for each of the electroplating drums 101 and 102, which are designed in accordance with the exemplary embodiment according to FIG. Furthermore, there are two lifting rods 114 and 115 in a cover 113 for opening the electroplating drums 101 and 102, respectively.

Die Steuerung der Vorrichtung gemäß Figur 2 erfolgt in entsprechender Weise wie bei der Vorrichtung gemäß Figur 1. Bei der Vorrichtung nach Figur 2 können die beiden Galvanisiertrommeln 101 und 102 gleichzeitig oder anwechselnd beschickt werden, wobei jedoch der Elektrolyt aus dem Elektrolyt-Vorratsbehälter 16 über Niveauwächter im Galvanisiertrog 100 aufrechterhalten werden muß. Aus diesem Grunde sind gleichwirkende Teile in Figur 2 mit gleichen Bezugszeichen wie in Figur 1 versehen.

Figure imgb0001
Figure imgb0002
Figure imgb0003
 The control of the device according to FIG. 2 takes place in a manner corresponding to that of the device according to FIG. 1. In the device according to FIG. 2, the two electroplating drums 101 and 102 can be charged simultaneously or alternately, but the electrolyte from the electrolyte storage container 16 is monitored by level monitors must be maintained in the electroplating trough 100. For this reason, parts with the same effect in FIG. 2 are provided with the same reference symbols as in FIG. 1.
Figure imgb0001
Figure imgb0002
Figure imgb0003

Claims (16)

1. Apparatus for the electrodeposition of aluminium from aprotic, organo-aluminium electrolytes which are free of oxygen and water, comprising a heatable electrodeposition tank which can be closed in air-tight manner and which can be supplied with an inert gas, a rotatable electrodeposition drum arranged within the electrodeposition tank, a feed container for electrolyte which is connected to the electrodeposition tank, and two further containers for storing inert liquids, characterised in that for filling the electrodeposition drum (44) a transport device (52) is provided for the bulk goods (76) to be treated, said transport device leading into the interior of the electrodeposition tank (1) through a valve (45) and terminating above a closable opening (54) in the electrodeposition drum (44) ; that the opening and closing of the electrodeposition drum (44) can be effected from outside ; and that for emptying the electrodeposition drum (44), a discharge container (8) is provided which can be supplied with inert gas and inert liquid and which is arranged beneath the electrodeposition tank (1) and is connected to the latter through a closable tubular connecting element (5).
2. Apparatus as claimed in Claim 1, characterised in that the closable tubular connecting element (5) includes a ball valve.
3. Apparatus as claimed in Claim 1 or Claim 2, characterised in that the transport device (52) which leads into the interior of the electrodeposition tank (1) is led through an upwardly-sloping channel (51) the end of which located outside the electrodeposition tank (1) opens into a container (46) filled with inert liquid forming part of a loading air-lock (45).
4. Apparatus as claimed in Claim 3, characterised in that the channel (51) which accommodates the transport device (52) is supported in sealing fashion in the container (46) of the loading air-lock (45) by at least one diaphragm (50).
5. Apparatus as claimed in Claim 3 or Claim 4, characterised in that the transport device (52) consists of at least one conveyor belt on that part of which, which is submerged in the inert liquid, the bulk goods (76) to be electroplated can be positioned.
6. Apparatus as claimed in one of Claims 1 to 5, characterised in that the container (46) of the loading air-lock (45) is attached by means of flanges to the electrodeposition tank (1) in gas- tight fashion.
7. Apparatus as claimed in one of Claims 1 to 6, characterised in that the volume of the discharge container (8) which is connected by flanges to the connecting element (5) is such as to correspond approximately to the volume of the contents of the electrodeposition drum (44).
8. Apparatus as claimed in Claim 7, characterised in that the discharge container (8) contains a perforated filling basket (9) which can be removed through a side opening (11) which can be closed in air-tight manner.
9. Apparatus as claimed in Claim 8, characterised in that the filling basket (9) has a sloping base (10).
10. Apparatus as claimed in one of Claims 1 to 9, characterised in that the part of the electrodeposition drum (44) which is submerged in the electrolyte is surrounded by two anodes (70) which are arranged so as to be mutually adjustable relative to one another so as to provide an opening (73) for the discharge of the bulk goods (76).
11. Apparatus as claimed in one of Claims 1 to 10, characterised in that for flooding and washing the discharge container (8) and where necessary the electrodeposition tank (1), two containers (32, 33 and 20, 24) for inert liquids are arranged above and two below the electrodeposition tank (1) and the discharge container (8).
12. Apparatus as claimed in one of Claims 1 to 11, characterised in that an inert gas feed container (81) is connected through valves (83, 87, 85) to the electrodeposition tank (1), to the discharge container (8) and to the electrolyte feed container (16), the corresponding valves (83, 85, 87) being so controlled as to form a closed inert gas circuit.
13. Apparatus as claimed in Claims 1 to 12, characterised in that the electrodeposition drum (44) can be opened by an unlocking device which passes through the cover (2) of the electrodeposition tank (1).
14. Apparatus as claimed in Claim 13, characterised in that the unlocking device basically consists of a lifting mechanism (63) which is rotationally and axially movable.
15. Apparatus as claimed in one of Claims 1 to 14, characterised in that the electrodeposition tank (100) contains two electrodeposition drums (101, 102), each of which is assigned a feed unit (111, 112).
16. Apparatus as claimed in Claim 15, characterised in that the electrodeposition drums (101, 102) are arranged one beside another and have a common fixed central anode (103), whilst the two outer anodes (104, 105) are arranged to be movable.
EP81104182A 1980-06-20 1981-06-01 Apparatus for the electroplating of aluminium Expired EP0042503B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81104182T ATE4511T1 (en) 1980-06-20 1981-06-01 DEVICE FOR ELECTROPLATING ALUMINUM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3023129A DE3023129C2 (en) 1980-06-20 1980-06-20 Device for the galvanic deposition of aluminum
DE3023129 1980-06-20

Publications (2)

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EP0042503A1 EP0042503A1 (en) 1981-12-30
EP0042503B1 true EP0042503B1 (en) 1983-08-24

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US (1) US4360409A (en)
EP (1) EP0042503B1 (en)
JP (1) JPS593560B2 (en)
AT (1) ATE4511T1 (en)
BR (1) BR8103882A (en)
CA (1) CA1163600A (en)
DE (1) DE3023129C2 (en)
DK (1) DK151392C (en)
ES (1) ES8205272A1 (en)
IE (1) IE51615B1 (en)
NO (1) NO154886C (en)
PT (1) PT73225B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106222701A (en) * 2016-07-29 2016-12-14 四川华索自动化信息工程有限公司 A kind of based on the auto feed control system used for aluminium electrolysis comparing amplifying circuit

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3107101A1 (en) * 1981-02-20 1982-09-09 Schering Ag, 1000 Berlin Und 4619 Bergkamen DEVICE AND METHOD FOR GALVANIC METAL DEPOSITION ON OBJECTS, THE CLEANING OF ADHESIVE SURFACE TREATMENT AGENTS AND THEIR RECOVERY
DE3236138A1 (en) * 1982-09-29 1984-03-29 Siemens AG, 1000 Berlin und 8000 München DEVICE FOR GALVANIC DEPOSITION OF ALUMINUM
US4571291A (en) * 1984-08-20 1986-02-18 Alumatec, Inc. Apparatus for the electrodeposition of metal
DE3438316A1 (en) * 1984-10-19 1985-10-10 Alois 5202 Hennef Müller DEVICE AND METHOD FOR WET EMPTYING A TRANSPORTABLE GALVANIC DRUM
US4668367A (en) * 1985-07-09 1987-05-26 Siemens Aktiengesellschaft Lock for loading and unloading goods into a treatment apparatus having a protective atmosphere
DE3688583D1 (en) * 1985-09-17 1993-07-22 Siemens Ag EQUIPMENT FOR THE MASS GALVANIZATION OF SHOEABLE GOODS.
ATE40419T1 (en) * 1985-09-17 1989-02-15 Siemens Ag EQUIPMENT FOR THE BULK GALVANISATION OF PORCHABLE GOODS.
JPS62162498A (en) * 1986-01-11 1987-07-18 エルム工業株式会社 Document punch with document binding-hole reinforcing-piece sticking mechanism
CH694619A5 (en) 1999-07-12 2005-04-29 Wmv Appbau Gmbh & Co Kg Method and apparatus for the electrochemical treatment.
DE19932524C1 (en) * 1999-07-12 2001-03-29 Wmv App Bau Gmbh & Co Kg Method and device for electrochemical treatment
EP1279751A1 (en) * 2001-07-28 2003-01-29 Aluminal Oberflächtentechnik GmbH & Co. KG Apparatus for galvanic deposition of aluminium or aluminium alloys from metallorganic aluminium alkyl containing electrolytes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425926A (en) * 1965-07-27 1969-02-04 Kazuya Hojyo Apparatus for automatically electroplating various articles with chromium
DE2506689A1 (en) * 1975-02-14 1976-09-02 Schering Ag AUTOMATIC GALVANIZING SYSTEM
CH603832A5 (en) * 1975-08-21 1978-08-31 Siemens Ag
DE2716805C3 (en) * 1977-04-15 1979-10-31 Siemens Ag, 1000 Berlin Und 8000 Muenchen Device for the galvanic deposition of aluminum

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106222701A (en) * 2016-07-29 2016-12-14 四川华索自动化信息工程有限公司 A kind of based on the auto feed control system used for aluminium electrolysis comparing amplifying circuit

Also Published As

Publication number Publication date
DK272381A (en) 1981-12-21
EP0042503A1 (en) 1981-12-30
ES503144A0 (en) 1982-06-01
IE51615B1 (en) 1987-01-21
ATE4511T1 (en) 1983-09-15
DK151392B (en) 1987-11-30
CA1163600A (en) 1984-03-13
US4360409A (en) 1982-11-23
IE811362L (en) 1981-12-20
DE3023129A1 (en) 1982-01-14
NO154886B (en) 1986-09-29
DE3023129C2 (en) 1982-04-15
NO154886C (en) 1987-01-07
JPS5743998A (en) 1982-03-12
BR8103882A (en) 1982-03-09
NO812101L (en) 1981-12-21
ES8205272A1 (en) 1982-06-01
DK151392C (en) 1988-05-16
PT73225A (en) 1981-07-01
PT73225B (en) 1982-07-01
JPS593560B2 (en) 1984-01-24

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