EP0001832A1 - Electrical current transmission device - Google Patents
Electrical current transmission device Download PDFInfo
- Publication number
- EP0001832A1 EP0001832A1 EP78101280A EP78101280A EP0001832A1 EP 0001832 A1 EP0001832 A1 EP 0001832A1 EP 78101280 A EP78101280 A EP 78101280A EP 78101280 A EP78101280 A EP 78101280A EP 0001832 A1 EP0001832 A1 EP 0001832A1
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- European Patent Office
- Prior art keywords
- shaft
- container
- tub
- metal alloy
- cover
- 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.)
- Granted
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- 230000005540 biological transmission Effects 0.000 title description 10
- 229910001092 metal group alloy Inorganic materials 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 230000008018 melting Effects 0.000 description 5
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 5
- 229910052753 mercury Inorganic materials 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000004519 grease Substances 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 229910052797 bismuth Inorganic materials 0.000 description 3
- 229910052745 lead Inorganic materials 0.000 description 3
- 229910001338 liquidmetal Inorganic materials 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- HVWGTGTZCBPIOH-UHFFFAOYSA-N 1lambda2-stannole Chemical compound [Sn]1C=CC=C1 HVWGTGTZCBPIOH-UHFFFAOYSA-N 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 241000227287 Elliottia pyroliflora Species 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- 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 present invention relates to a device for transmitting electrical current with a high current strength to a rotating electrode.
- the liquid electrolyte is filled into the container.
- the container also serves as an electrode, while a rotating cathode or rotating anode is inserted into the container as the other electrode.
- a device for carrying out an electropolishing process is known from DE-OS 2 528 942.
- the large container is then rotatably mounted horizontally on several roller stands.
- a shaft is electrically insulated and freely rotatable through the central connecting piece of the large container, to which a reticulated electrode is attached at a distance and parallel to the container wall with the aid of electrode holders. There is enough electrolyte in the container to cover the electrode.
- the shaft is stationary during electropolishing with the electrode, which is connected to the negative pole of a DC voltage source, while the container is slowly rotated about its longitudinal axis. How the connection of the container during its rotation with the positive pole of the DC voltage source is accomplished is not specified in this document.
- connection can be made by attaching a copper socket to a lid of the container, preferably near its center.
- a bearing shell is rotatably arranged on the copper bushing, which is provided with conductive grease to improve the current transmission and is connected to the DC voltage source via a flexible line.
- the container In the process for hard chrome plating of polymerization containers according to DE-OS 1 808 865, the container is set up vertically and completely filled with electrolyte after installing a traveling anode.
- the container which is stationary during hard chrome plating, is connected to the negative pole of a direct current source, while the connection between the rotating traveling anode and the positive pole of the direct current source is made by mercury, which is located in a vessel which is concentric with the shaft of the traveling anode above the container arranged, penetrated by it and connected to it in a tight-fitting manner.
- a rigid connecting line dips into the mercury and leads to the direct current source.
- a disadvantage of the current transmission device consisting of copper bushing and bearing shell with conductive grease is that the current between the bushing and the bearing is only transmitted over a small area, as a result of which the bushing and the bearing become very hot.
- an increase in temperature at the point of contact increases the electrical resistance, which requires a higher electrical output to overcome is.
- the conductive grease becomes so thin when the bushing and bearing are heated that it leaks or cokes.
- the disadvantage of using mercury as a current transformer is that it is liquid at room temperature and can therefore easily leak during transport and assembly. In view of the high toxicity of the mercury, this can easily endanger the health of the operating personnel.
- a device is characterized according to the invention by a shaft carrying a connector, the connector being rigidly connected to the electrode; a trough filled with a low-melting metal alloy, to which a contact piece is attached to which a flexible cable can be screwed; a cover which is penetrated by the shaft and is electrically insulated from the tub; and a disk which is arranged on the shaft in the region of the cover.
- the opening of the trough is always in a horizontal position. This ensures that the liquid metal alloy does not emerge from the trough with certainty, and that the disk is always immersed at the same depth in the liquid metal alloy in which it can rotate freely.
- the current path in the device according to the invention runs from the connector, which is fastened to the flange of the container representing the movable electrode, via the shaft inserted into the connector, the disk mounted on the shaft, the liquid metal alloy located in the tub and the other Trough attached contact piece to which a flexible cable leading to the DC voltage source can be screwed.
- the two bearing bushes which are arranged in the cover resting on the tub and through which the shaft is guided, therefore heat up only insignificantly.
- the plaid Stannol ® (no. 46) with an indium content of 90% and a melting point of 46 0 C and the alloys according Lipowitz (50% Bi, 27% Pb, 13% Sn, 10% Cd ) with a melting point of about 60 ° C, according to WOOD (50% Bi, 25% Pb, 12.5% Sn, 12.5% Cd) with a melting point of about 70 c C and according to ROSE (50% Bi, 25 % Pb, 25% Sn) with a melting point of about 95 ° C is particularly suitable.
- the cylindrical container 1, which on rollers 2 ago. Zontally rotatably mounted, is partially filled with electrolyte solution and represents a rotating electrode, while the other electrode is arranged in its interior at a short distance from and parallel to the container wall.
- the other electrode is attached to a shaft 3 with the aid of electrode holders, which penetrates the container 1 in the center.
- the shaft 3 rests rotatably in cross-shaped flat profiles 4, which are fastened to the central flanges 5 in both lids of the container 1 in an electrically insulated manner.
- a flange 5 is also screwed to the connecting piece of the transmission device 7 in an electrically conductive manner, while a flexible cable 9 is fastened to the contact piece 8 of the transmission device 7 and is connected to the positive pole of a direct current source.
- the shaft 3, which does not change its position when the container 1 rotates about its axis, is rigidly connected to the negative pole of this direct current source.
- the transmission device consists of a trough 10, which is preferably made of copper.
- the trough 10, to which the contact piece 8 is fastened, is filled with a low-melting metal alloy and can be electrically heated in a regulated manner by means of a control device 11 via a socket 12.
- the Trough 10 is also closed by a lid 13, the trough 10 and the lid 13 being electrically insulated from one another.
- the cover 13 is penetrated by a shaft 14 which is rotatably mounted in the cover 13 and carries the connector 6 at one end, while a disc 15 is located on the shaft 14 within the cover 13.
- the diameter of the disk 15 is dimensioned such that it immerses a large area in the molten metal alloy located in the tub 10.
- the progress achieved with the device according to the invention is based on the electropolishing of a cylindrical container of 100 m 3 content made of material no. 1.4571 (according to DIN 17440) explained.
- a current of 5000 A flows at the beginning of 14 V.
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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)
- Manufacture And Refinement Of Metals (AREA)
- Electrolytic Production Of Metals (AREA)
- Sliding-Contact Bearings (AREA)
- Friction Gearing (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
57 Die vorliegende Erfindung betrifft eine Vorrichtung zur Ubertragung von elektrischem Strom mit hoher Stromstärke auf eine rotierende Elektrode. Die Vorrichtung besteht aus einer Wanne (10), welche mit einer niedrig schmelzenden Metallegierung gefüllt ist und an weicher ein Kontaktstück (8) befestigt ist an das ein flexibles Kabel (9) anschraubbar ist. Ein Deckel (13) ist mit der Wanne (10) elektrisch isoliert verbunden und von einer Welle (14) durchdrungen, wobei im Bereich des Deckels (13) auf der Welle (14) eine Scheibe (15) angeordnet ist. Die Welle (14) trägt an ihrem einen Ende ein AnschluBstück (6), weiches starr mit dem eine rotierende Elektrode darstellenden zylindrischen Behälter verbunden ist (vergleiche die Figuren 1 und 2).
Description
Die vorliegende Erfindung betrifft eine Vorrichtung zur Übertragung von elektrischem Strom mit hoher Stronstärke auf eine rotierende Elektrode..The present invention relates to a device for transmitting electrical current with a high current strength to a rotating electrode.
Bei der galvanischen Behandlung von Großbehältern, beispielsweise beim Elektropolieren oder Hartverchromen, wire in den Behälter der flüssige Elektrolyt eingefüllt. Der Behälter dient gleichzeitig als eine Elektrode, während in den Behälter als andere Elektrode eine Drehkathode bzw Drehanode eingeführt wird.In the galvanic treatment of large containers, for example in electropolishing or hard chrome plating, the liquid electrolyte is filled into the container. The container also serves as an electrode, while a rotating cathode or rotating anode is inserted into the container as the other electrode.
So ist aus der DE-OS 2 528 942 eine Vorrichtung zur Durchführung eines Elektropolierverfahrens bekannt. Danach wire der Großbehälter horizontal auf mehreren Rollenböcken drehbar gelagert. Durch die mittigen Stutzen des GroBbehälters, ist eine Welle elektrisch isoliert und frei drehbar hindurchgeführt, an welcher mit Hilfe von Elektrodenhalterungen eine netzförmige Elektrode in nahem Abstand und parallel zur Behälterwand befestigt ist. In den Behälter ist soviel Elektrolyt eingefüllt, daß die Elektrode bedeckt ist. Während des Elektropolierens steht die Welle mit der Elektrode, welche mit dem negativen Pol einer Gleichspannungsquelle verbunden ist, still, während der Behälter langsam um seine Längsachse gedreht wird. Auf welche Weise die Verbindung des Behälters während seiner Drehung mit dem positiven Pol der Gleichspannungsquelle bewerkstelligt wird, ist in dieser Schrift nicht angegeben. Diese Verbindung kann jedoch hergestellt werden, indem an einem Deckel des Behälters, vorzugsweise nahe seinem Mittelpunkt, eine Buchse aus Kupfer befestigt ist. Auf der Kupferbuchse ist eine Lagerschale drehbar angeordnet, welche zur Verbesserung der Stromübertragung mit Leitfett versehen und über eine flexible Leitung mit der Gleichspannungsquelle verbunden ist.A device for carrying out an electropolishing process is known from DE-OS 2 528 942. The large container is then rotatably mounted horizontally on several roller stands. A shaft is electrically insulated and freely rotatable through the central connecting piece of the large container, to which a reticulated electrode is attached at a distance and parallel to the container wall with the aid of electrode holders. There is enough electrolyte in the container to cover the electrode. The shaft is stationary during electropolishing with the electrode, which is connected to the negative pole of a DC voltage source, while the container is slowly rotated about its longitudinal axis. How the connection of the container during its rotation with the positive pole of the DC voltage source is accomplished is not specified in this document. However, this connection can be made by attaching a copper socket to a lid of the container, preferably near its center. A bearing shell is rotatably arranged on the copper bushing, which is provided with conductive grease to improve the current transmission and is connected to the DC voltage source via a flexible line.
Beim Verfahren zum Hartverchromen von Polymerisationsbehältern nach der DE-OS 1 808 865 wird der Behälter vertikal aufgestellt und nach Einbau einer Wanderanode vollständig mit Elektrolyt gefüllt. Der während der Hartverchromung stillstehende Behälter wird mit dem negativen Pol einer Gleichstromquelle verbunden, während die Verbindung zwischen der sich drehenden Wanderanode und dem positiven Pol der Gleichstromquelle durch Quecksilber hergestellt wird, welches sich in einem Gefäß befindet, das oberhalb des Behälters konzentrisch zur Welle der Wanderanode angeordnet, von ihr durchdrungen und mit ihr dichtschließend verbunden ist. In das Quecksilber taucht eine starre Verbindungsleitung ein, welche zur Gleichstromquelle führt.In the process for hard chrome plating of polymerization containers according to DE-OS 1 808 865, the container is set up vertically and completely filled with electrolyte after installing a traveling anode. The container, which is stationary during hard chrome plating, is connected to the negative pole of a direct current source, while the connection between the rotating traveling anode and the positive pole of the direct current source is made by mercury, which is located in a vessel which is concentric with the shaft of the traveling anode above the container arranged, penetrated by it and connected to it in a tight-fitting manner. A rigid connecting line dips into the mercury and leads to the direct current source.
Nachteilig ist bei der aus Kupferbuchse und Lagerschale mit Leitfett bestehenden Stromübertragungseinrichtung, daß der Strom zwischen Buchse und Lager nur an einem kleinen Flächenbereich übertragen wird, wodurch Buchse und Lager sehr heiß werden. Eine Temperaturerhöhung an der Berührungsstelle erhöht aber den elektrischen Widerstand, zu dessen Überwindung eine höhere elektrische Leistung erforderlich ist. Darüberhinaus wird das Leitfett bei Erhitzung von Buchse und Lager so dünnflüssig, daß es ausläuft oder es verkokt.
Von Nachteil ist bei der Verwendung von Quecksilber als Stromübertrager, daß es bei Zimmertemperatur flüssig ist und daher bei Transport und Montage leicht auslaufen kann. Dadurch kann in Anbetracht der großen Giftigkeit des Quecksilbers leicht die Gesundheit des Bedienungspersonals gefährdet werden.A disadvantage of the current transmission device consisting of copper bushing and bearing shell with conductive grease is that the current between the bushing and the bearing is only transmitted over a small area, as a result of which the bushing and the bearing become very hot. However, an increase in temperature at the point of contact increases the electrical resistance, which requires a higher electrical output to overcome is. In addition, the conductive grease becomes so thin when the bushing and bearing are heated that it leaks or cokes.
The disadvantage of using mercury as a current transformer is that it is liquid at room temperature and can therefore easily leak during transport and assembly. In view of the high toxicity of the mercury, this can easily endanger the health of the operating personnel.
Es ist daher Aufgabe der vorliegenden Erfindung, eine Vorrichtung zur Übertragung von elektrischem Strom von hoher Stromstärke auf eine rotierende Elektrode anzugeben, bei welcher auf die Verwendung von heiß werdenden Metallteilen bzw. von Quecksilber als Stromübertrager verzichtet werden kann. Eine solche Vorrichtung ist erfindungsgemäß gekennzeichnet durch eine ein Anschlußstück tragende Welle, wobei das Anschlußstück starr mit der Elektrode verbunden ist; eine mit einer niedrig schmelzenden Metallegierung gefüllte Wanne, an welcher ein Kontaktstück befestigt ist, an das ein flexibles Kabel anschraubbar ist; einen Deckel, welcher von der Welle durchdrungen und mit der Wanne elektrisch isoliert verbunden ist; und eine Scheibe, welche im Bereich des Deckels auf der Welle angeordnet ist.It is therefore an object of the present invention to provide a device for transmitting electrical current of high amperage to a rotating electrode, in which the use of metal parts which become hot or of mercury as a current transformer can be dispensed with. Such a device is characterized according to the invention by a shaft carrying a connector, the connector being rigidly connected to the electrode; a trough filled with a low-melting metal alloy, to which a contact piece is attached to which a flexible cable can be screwed; a cover which is penetrated by the shaft and is electrically insulated from the tub; and a disk which is arranged on the shaft in the region of the cover.
Die Vorrichtung gemäß der Erfindung kann weiterhin wahlweise noch dadurch ausgestaltet sein, daß
- a) die Wanne mit einer Metallegierung gefüllt ist, deren Schmelzpunkt oberhalb von 30°C, vorzugsweise oberhalb von 50°C, liegt;
- b) die Wanne elektrisch beheizbar ist;
- c) die Beheizung der Wanne mit Hilfe einer Steuereinrichtung regulierbar erfolgt;
- d) der Durchmesser der Scheibe so bemessen ist, daß sie mit einer Fläche von 0,1 bis 3 mm2 je Ampere durchfließenden Stromes in die Metallegierung eintaucht.
- a) the tub is filled with a metal alloy whose melting point is above 30 ° C, preferably above 50 ° C;
- b) the tub is electrically heated;
- c) the heating of the tub is regulated by means of a control device;
- d) the diameter of the disk is dimensioned such that it immerses in the metal alloy with an area of 0.1 to 3 mm 2 per ampere current flowing through it.
Beim Betrieb der erfindungsgemäßen Vorrichtung befindet sich die Öffnung der Wanne immer in horizontaler Lage. Dadurch wird erreicht, daß die flüssige Metallegierung mit Sicherheit nicht aus der Wanne austritt, und daß die Scheibe immer gleich tief in die flüssige Metallegierung, in welcher sie frei rotieren kann, eintaucht.
Der Stromweg verläuft bei der Vorrichtung gemäß der Erfindung vom Anschlußstück, welches am Flansch des die bewegliche Elektrode darstellenden Behälters befestigt ist, über die in das Anschlußstück eingesetzte Welle, die auf die Welle aufgezogene Scheibe, die in der Wanne befindliche flüssige Metallegierung und das an der Wanne befestigte Kontaktstück, an welches ein zur Gleichspannungsquelle führendes flexibles Kabel anschraubbar ist. Die beiden Lagerbuchsen, welche im auf der Wanne aufliegenden Deckel angeordnet sind und durch welche die Welle geführt wird, erwärmen sich deswegen nur unbedeutend. Als Metallegierung sind für die erfindungsgemäBe Vorrichtung das Leichtlot Stannol®(Nr. 46) mit einem Indiumgehalt von 90% und einem Schmelzpunkt von 460C sowie die Legierungen nach LIPOWITZ (50% Bi, 27% Pb, 13% Sn, 10% Cd) mit einem Schmelzpunkt von etwa 60°C, nach WOOD (50% Bi, 25% Pb, 12,5% Sn, 12,5% Cd) mit einem Schmelzpunkt von etwa 70cC und nach ROSE (50% Bi, 25% Pb, 25% Sn) mit einem Schmelzpunkt von etwa 95°C besonders geeignet. Bei der Verwendung von Stannol ® kann auf eine geregelte Beheizung der Wanne verzichtet werden, da die einmal aufgeschmolzene Metalllegierung durch die hohe Stromstärke des die Wanne durchfließenden Stromes auf etwa 50°C gehalten wird.
Nach Abschalten des die Wanne durchfließenden Stromes erstarrt alsbald die in der Wanne befindliche Metallegierung, . so daß die erfindungsgemäße Vorrichtung problemlos abmontiert und transportiert werden kann.When the device according to the invention is in operation, the opening of the trough is always in a horizontal position. This ensures that the liquid metal alloy does not emerge from the trough with certainty, and that the disk is always immersed at the same depth in the liquid metal alloy in which it can rotate freely.
The current path in the device according to the invention runs from the connector, which is fastened to the flange of the container representing the movable electrode, via the shaft inserted into the connector, the disk mounted on the shaft, the liquid metal alloy located in the tub and the other Trough attached contact piece to which a flexible cable leading to the DC voltage source can be screwed. The two bearing bushes, which are arranged in the cover resting on the tub and through which the shaft is guided, therefore heat up only insignificantly. As a metal alloy are for erfindungsgemäBe device, the Leichtlot Stannol ® (no. 46) with an indium content of 90% and a melting point of 46 0 C and the alloys according Lipowitz (50% Bi, 27% Pb, 13% Sn, 10% Cd ) with a melting point of about 60 ° C, according to WOOD (50% Bi, 25% Pb, 12.5% Sn, 12.5% Cd) with a melting point of about 70 c C and according to ROSE (50% Bi, 25 % Pb, 25% Sn) with a melting point of about 95 ° C is particularly suitable. When using Stannol ® , there is no need to regulate the heating of the tub, since the molten metal alloy is kept at around 50 ° C by the high current of the current flowing through the tub.
After switching off the current flowing through the tub, the metal alloy in the tub soon solidifies,. so that the device according to the invention can be easily removed and transported.
In der beigefügten Zeichnung ist ein Ausführungsbeispiel des Gegenstandes der Erfindung schematisch dargestellt. Dabei zeigen:
- Figur 1 einen liegend angeordneten zylindrischen Behälter, an dessen mittigen Flansch die erfindungsgemäße Übertragungsvorrichtung befestigt ist;
- Figur 2 die Übertragungsvorrichtung im einzelnen.
- 1 shows a cylindrical container arranged horizontally, on the central flange of which the transmission device according to the invention is fastened;
- Figure 2 shows the transmission device in detail.
Der zylindrische Behälter 1, welcher auf Rollen 2 her. zontal drehbar gelagert ist, ist teilweise mit Elektrolytlösung gefüllt und stellt eine rotierende Elektrode dar, während in seinem Inneren in geringem Abstand von und parallel zu der Behälterwand die andere Elektrode angeordnet ist. Dabei ist die andere Elektrode mit HilfE von Elektrodenhalterungen an einer Welle 3 befestigt, welche den Behälter 1 mittig durchdringt. Die Welle 3 ruht dabei drehbar in kreuzweise angeordneten Flachprofilen 4, welche elektrisch isoliert an den mittiger Flanschen 5 in beiden Deckeln des Behälters 1 befestigt sind. Ein Flansch 5 ist weiterhin mit dem AnschluBstück der Übertragungsvorrichtung 7 elektrisch leitend ver schraubt, während am Kontaktstück 8 der Ubertragungsvorrichtung 7 ein flexibles Kabel 9 befestigt ist, welche mit dem positiven Pol einer Gleichstromquelle verburnden ist. Die Welle 3, welche bei einer Drehung des Behälter 1 um seine Achse ihre Lage nicht verändert, ist starr dem negativen Pol dieser Gleichstromquelle verbunden.The cylindrical container 1, which on rollers 2 ago. Zontally rotatably mounted, is partially filled with electrolyte solution and represents a rotating electrode, while the other electrode is arranged in its interior at a short distance from and parallel to the container wall. The other electrode is attached to a shaft 3 with the aid of electrode holders, which penetrates the container 1 in the center. The shaft 3 rests rotatably in cross-shaped flat profiles 4, which are fastened to the central flanges 5 in both lids of the container 1 in an electrically insulated manner. A flange 5 is also screwed to the connecting piece of the transmission device 7 in an electrically conductive manner, while a flexible cable 9 is fastened to the contact piece 8 of the transmission device 7 and is connected to the positive pole of a direct current source. The shaft 3, which does not change its position when the container 1 rotates about its axis, is rigidly connected to the negative pole of this direct current source.
Die erfindungsgemäße Übertragungsvorrichtung besteht aus einer Wanne 10, welche vorzugsweise aus Kupfer gefertig ist. Die Wanne 10, an welcher das Kontaktstück 8 befestig ist, ist mit einer niedrig schmelzenden Metallegierung gefüllt und mit Hilfe einer Steuereinrichtung 11 über eine Steckdose 12 reguliert elektrisch beheizbar. Die
Wanne 10 ist weiterhin durch einen Deckel 13 verschlossen, wobei die Wanne 10 und der Deckel 13 elektrisch voneinander isoliert sind. Der Deckel 13 ist von einer Welle 14 durchdrungen, welche drehbar im Deckel 13 gelagert ist und an ihrem einen Ende das Anschlußstück 6 trägt, während sich innerhalb des Deckels 13 auf der Welle 14 eine Scheibe 15 befindet. Dabei ist der Durchmesser der Scheibe 15 so bemessen, daß sie mit großer Fläche in die in der Wanne 10 befindliche geschmolzene Metallegierung eintaucht.The transmission device according to the invention consists of a
Trough 10 is also closed by a
Der mit der Vorrichtung gemäß der Erfindung erzielte Fortschritt sei anhand der Elektropolitur eines zylindrischen Behälters von 100 m3 Inhalt aus Werkstoff-Nr. 1.4571 (nach DIN 17440) erläutert. Bei der gemäß der DE-OS 2 528 942 durchgeführten Elektropolitur fließt ein Strom von 5000 A bei zu Anfang 14 V.The progress achieved with the device according to the invention is based on the electropolishing of a cylindrical container of 100 m 3 content made of material no. 1.4571 (according to DIN 17440) explained. In the electropolishing carried out according to DE-OS 2 528 942, a current of 5000 A flows at the beginning of 14 V.
Die Stromübertragung vom rotierenden Behälter auf die starre Zuführungsleitung erfolgt durch eine Kupferbuchse, welche in einer Lagerschale läuft und in die zur besseren Stromübertragung Leitfett eingefüllt ist. Bereits nach fünfstündiger Elektropolitur ist infolge der Erhitzung von Kupferbuchse und Lagerschale die Spannung auf 18 V gestiegen. Die Fortführung der Elektropolitur ist in den folgenden 40 Stunden nur durch ständige Kühlung von Kupferbuchse und Lagerschale durch Bespritzen mit Wasser möglich, . wodurch allein ein Festfressen der Kupferbuchse in der Lagerschale vermieden werden kann.Power is transferred from the rotating container to the rigid feed line through a copper bushing, which runs in a bearing shell and in which conductive grease is filled for better power transmission. After five hours of electropolishing, the voltage rose to 18 V due to the heating of the copper bushing and bearing shell. The continuation of the electropolishing is only possible in the following 40 hours by constant cooling of the copper bushing and bearing shell by spraying with water. which alone can prevent the copper bush from seizing up in the bearing shell.
Verwendet man zur Stromübertragung die erfindungsgemäße Vorrichtung, so steigt die Spannung im Laufe der 48 Stunden andauernden Elektropolitur lediglich auf 14,5 V an. Dabei ist eine Kühlung der Vorrichtung nicht erforderlich.If the device according to the invention is used for the current transmission, the voltage rises only to 14.5 V in the course of the 48-hour electropolishing. It is not necessary to cool the device.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2749680 | 1977-11-07 | ||
| DE19772749680 DE2749680A1 (en) | 1977-11-07 | 1977-11-07 | DEVICE FOR TRANSMISSION OF ELECTRIC POWER |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0001832A1 true EP0001832A1 (en) | 1979-05-16 |
| EP0001832B1 EP0001832B1 (en) | 1981-10-07 |
Family
ID=6023158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP78101280A Expired EP0001832B1 (en) | 1977-11-07 | 1978-11-02 | Electrical current transmission device |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4203637A (en) |
| EP (1) | EP0001832B1 (en) |
| AT (1) | AT357838B (en) |
| DE (2) | DE2749680A1 (en) |
| ES (1) | ES473944A1 (en) |
| IT (1) | IT7851760A0 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4410714B2 (en) | 2004-08-13 | 2010-02-03 | 富士フイルム株式会社 | Method for producing support for lithographic printing plate |
| ATE395195T1 (en) | 2005-04-13 | 2008-05-15 | Fujifilm Corp | METHOD FOR PRODUCING A PLATE PRINTING PLATE SUPPORT |
| JP2009208140A (en) | 2008-03-06 | 2009-09-17 | Fujifilm Corp | Manufacturing method of aluminum alloy sheet for planographic printing plate, aluminum alloy sheet for planographic printing plate and support for planographic printing plate manufactured by the method |
| WO2010038812A1 (en) | 2008-09-30 | 2010-04-08 | 富士フイルム株式会社 | Electrolytic treatment method and electrolytic treatment device |
| CN102460749A (en) | 2009-06-26 | 2012-05-16 | 富士胶片株式会社 | Light reflecting substrate and process for manufacture thereof |
| US8883401B2 (en) | 2009-09-24 | 2014-11-11 | Fujifilm Corporation | Lithographic printing original plate |
| JP2012033853A (en) | 2010-04-28 | 2012-02-16 | Fujifilm Corp | Insulation light reflection substrate |
| KR20190139284A (en) | 2017-06-21 | 2019-12-17 | 후지필름 가부시키가이샤 | Aluminum composite material |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2642560A (en) * | 1949-09-27 | 1953-06-16 | John L Elkins | Rotatable welding ground clamp |
| US3514653A (en) * | 1969-01-21 | 1970-05-26 | Oakley A Kendall | Antifriction slipring device |
| DE1808865A1 (en) * | 1968-11-25 | 1970-06-04 | Karl Wittel | Process and application technology for hard chrome plating of closed polymerisation containers of any size with the highest permissible operating pressures |
| US3727167A (en) * | 1969-12-10 | 1973-04-10 | Beta Instr Co | Rotary high current pick-off |
| US3806745A (en) * | 1971-12-31 | 1974-04-23 | Soudure Autogene Elect | Slip ring |
| FR2266335A1 (en) * | 1974-03-27 | 1975-10-24 | Electricity Council | |
| DE2528942A1 (en) * | 1975-06-28 | 1976-12-30 | Hoechst Ag | PROCESS FOR ZONED ELECTROPOLATING THE INTERNAL SURFACE OF LARGE-SPACED CONTAINERS |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2475051A (en) * | 1947-07-14 | 1949-07-05 | Black Sivalls & Bryson Inc | Ground connector for welding apparatus |
| US2575409A (en) * | 1948-06-30 | 1951-11-20 | Crown Cork & Seal Co | Current collector for electroplating apparatus |
| US3430179A (en) * | 1966-07-21 | 1969-02-25 | Orenda Ltd | Cable reel |
-
1977
- 1977-11-07 DE DE19772749680 patent/DE2749680A1/en not_active Withdrawn
-
1978
- 1978-10-04 ES ES473944A patent/ES473944A1/en not_active Expired
- 1978-11-01 US US05/956,856 patent/US4203637A/en not_active Expired - Lifetime
- 1978-11-02 DE DE7878101280T patent/DE2861139D1/en not_active Expired
- 1978-11-02 EP EP78101280A patent/EP0001832B1/en not_active Expired
- 1978-11-03 IT IT7851760A patent/IT7851760A0/en unknown
- 1978-11-06 AT AT790378A patent/AT357838B/en not_active IP Right Cessation
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2642560A (en) * | 1949-09-27 | 1953-06-16 | John L Elkins | Rotatable welding ground clamp |
| DE1808865A1 (en) * | 1968-11-25 | 1970-06-04 | Karl Wittel | Process and application technology for hard chrome plating of closed polymerisation containers of any size with the highest permissible operating pressures |
| US3514653A (en) * | 1969-01-21 | 1970-05-26 | Oakley A Kendall | Antifriction slipring device |
| US3727167A (en) * | 1969-12-10 | 1973-04-10 | Beta Instr Co | Rotary high current pick-off |
| US3806745A (en) * | 1971-12-31 | 1974-04-23 | Soudure Autogene Elect | Slip ring |
| FR2266335A1 (en) * | 1974-03-27 | 1975-10-24 | Electricity Council | |
| DE2528942A1 (en) * | 1975-06-28 | 1976-12-30 | Hoechst Ag | PROCESS FOR ZONED ELECTROPOLATING THE INTERNAL SURFACE OF LARGE-SPACED CONTAINERS |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2861139D1 (en) | 1981-12-17 |
| DE2749680A1 (en) | 1979-05-10 |
| AT357838B (en) | 1980-08-11 |
| IT7851760A0 (en) | 1978-11-03 |
| US4203637A (en) | 1980-05-20 |
| ATA790378A (en) | 1979-12-15 |
| ES473944A1 (en) | 1979-04-01 |
| EP0001832B1 (en) | 1981-10-07 |
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