EP0075099B1 - Anlage zum galvanischen Abscheiden von Metallen, insbesondere von Aluminium - Google Patents

Anlage zum galvanischen Abscheiden von Metallen, insbesondere von Aluminium Download PDF

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Publication number
EP0075099B1
EP0075099B1 EP82107244A EP82107244A EP0075099B1 EP 0075099 B1 EP0075099 B1 EP 0075099B1 EP 82107244 A EP82107244 A EP 82107244A EP 82107244 A EP82107244 A EP 82107244A EP 0075099 B1 EP0075099 B1 EP 0075099B1
Authority
EP
European Patent Office
Prior art keywords
electrolyte
arrangement
anodes
inserts
treated
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
EP82107244A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0075099A1 (de
Inventor
Siegfried Dr. Birkle
Johann Gehring
Klaus Stöger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT82107244T priority Critical patent/ATE13913T1/de
Publication of EP0075099A1 publication Critical patent/EP0075099A1/de
Application granted granted Critical
Publication of EP0075099B1 publication Critical patent/EP0075099B1/de
Expired legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • 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
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/06—Wires; Strips; Foils
    • C25D7/0614—Strips or foils

Definitions

  • the invention relates to a system for the galvanic deposition of metals, in particular aluminum from aprotic, oxygen-free and water-free aluminum-organic electrolytes, on wire, tube or strip-shaped material with an externally closed tubular cell, through which the cathodically contacted material to be treated is treated is preferably continuously movable in the axial direction along anodes and through which the electrolyte can be pumped with the aid of a closed electrolyte circulation system against the direction of movement of the material, a lock arrangement being provided at each end of the tubular cell, which prevents the electrolyte from flowing out of the tubular cell consists of several chambers.
  • T-shaped connecting pieces are arranged which have a diaphragm which prevents the longitudinal passage of the electrolyte and which vertically deflects the electrolyte flow and which has a shape similar to the cross section of the treatment Good, tight-fitting breakthrough.
  • at least one disk-shaped chamber wall has a radial bore leading to the opening for the passage of the material to be treated, which is connected to an inert liquid circuit via a connecting piece.
  • the opening in the chamber wall can be supplied with inert liquid so that it practically forms a liquid lock through which the entry of atmospheric air is not possible, but also prevents the electrolyte from escaping.
  • this principle can and is also used for washing the treated goods, it then being expedient that the inert liquid required for this is obtained from the electrolyte by distillation and that this inert liquid enriched with the electrolyte is then fed back into the electrolyte circuit.
  • the invention is based on the object. to make a system of the type described in the introduction simpler and more efficient, with the possibility being given that several strips can be coated at the same time without significant additional effort in order to achieve a higher throughput. There should also be the possibility that the material to be treated is only partially coated.
  • the system according to the invention is characterized in that the tubular cell consists of a plurality of preferably metallic square tubes which can be flanged together and in which interchangeable non-conductive inserts are arranged, which on the one hand are adapted to the clear width of the square tubes and on the other hand are shaped in such a way that they provide longitudinal grooves and channels for Management of the material to be aluminized, the anodes surrounding the material to be treated and the electrolyte.
  • tube cells of any length can be produced with relatively simple means, and the individual sections can be dimensioned so that they are easily transportable.
  • the inserts can be replaced relatively easily, so that the system is very flexible.
  • the interchangeable insert pieces are preferably arranged opposite one another, the outer sides of which are adapted to the clear dimensions of the square tubes and on the opposite side of which recesses are provided for guiding and covering the material to be treated and the electrolyte and for holding the anodes surrounding the material to be treated.
  • the normally external anodes are used also used moderately for shielding the electrolyte against the metallic inner wall of the square tube, it being advantageous that the recesses for the anodes are designed such that the inserts are supported on the anodes.
  • a very simple assembly results from the fact that the inserts are firmly connected to the anodes in such a way that two inserts form a unit which can be pushed into the square tube.
  • Each of these units therefore also practically forms a square tube with flat end faces made of a non-conductive material. Their external dimensioning is such that they can be inserted exactly into the metallic sheathing tube.
  • Each unit has at least the length of the corresponding square tube, it being expedient if several square tubes are combined to form a tube cell, the assembly being carried out so that the end face of a unit does not fall into the plane of the fastening flanges of the square tubes. In this way not only a better seal, but also a better centering of the individual insert pieces is achieved.
  • the system shown in FIG. 1 is used for the galvanic deposition of aluminum from aprotic, oxygen-free and water-free aluminum-organic electrolytes on a strip-like material 1, which in the selected exemplary embodiment is pulled off a roll 2 of an unwinding unit 3, into a tubular cell 5 via a lock arrangement 4 - And passed through this for aluminizing and is wound over a lock arrangement 6 onto a roll 7 of a winding unit 8 after the aluminizing.
  • two strips 1 a and 1 b can be aluminized simultaneously by the rectangular cross-sectional shape of the tubular cell 5, it being apparent from FIG. 2 c that partial aluminization is also possible in a simple manner.
  • the system shown in FIG. 1 practically only needs to be supplemented by a further roll of the unwinding unit 3 and the winding unit 8.
  • the drive can be carried out by the same drive motor, but with the direction of rotation reversed.
  • Correspondingly arranged anodes are located within the tubular cell 5, which surround the material to be treated on all sides as far as possible.
  • the tube cell 5 Immediately behind the lock arrangement 4 and immediately in front of the lock arrangement 6, the tube cell 5 has an outlet connection 9 and an inlet connection 10, which in the selected exemplary embodiment run perpendicular to the longitudinal axis of the tube cell 5. Expediently, however, they are arranged inclined in the current direction, as is the case, for example, in the known tubular cell according to US Pat. No. 3,865,701.
  • the outlet nozzle 9 and the inlet nozzle 10 are connected to an electrolyte circuit which ends in an electrolyte reservoir 11. With the help of a pump 12, the electrolyte is pumped via a line 13, a valve 14 and a flow meter 15 via the inlet connector 10 into the tubular cell 5 and flows in the opposite direction to the movement of the strip-like material 1.
  • the electrolyte hidden via the outlet connector 9 is via a valve 16 and a line 17 are fed to the electrolyte reservoir 11, specifically in front of a filter 18.
  • This electrolyte circuit can be interrupted with the aid of the valves 16, for example when the tubular cell 5 is put into operation.
  • 23 inert liquid, z. B. via a parallel circuit via open valves 19 and 20 and pipes 21 and 22 with the aid of a feed pump.
  • toluene from an inert liquid reservoir 24 through the tubular cell 5 once to remove the atmospheric air from the tubular cell 5 before the electrolyte is pumped through under a protective gas atmosphere N 2 , and secondly - after the electrolyte has been drained - the tubular cell 5 with inert liquid to be able to clean.
  • the electrolyte reservoir 11 is sealed airtight with the help of a lid 25 and equipped with a pressure relief valve 26. Of course, all lines are inserted airtight through the cover. Of course, the electrolyte reservoir 11 is also under a protective gas atmosphere N z .
  • diaphragms 27 and 28 are provided on the outlet nozzle 9 and on the inlet nozzle 10, which are provided with slots for the passage of the material 1 to be treated, which are adapted to the cross-section of the material so that as possible little electrolyte can pass into the lock arrangements 4 and 6.
  • the lock arrangements 4 and 6 specially designed namely the lock arrangement 4 consists of three chambers 29 to 31, while the lock arrangement 6 even has five chambers 32 to 36.
  • Each of the chambers 29 to 36 consists of a square tube 37 and these matched chamber walls 38 to 47. Through holes in the chamber walls, 29 to 36 inert gas N z and / or inert liquid can be introduced into and removed from the individual chambers to form liquid locks, such as will be explained in more detail with reference to Figure 2.
  • the chambers 31 and 32 serve primarily to collect the electrolyte, which is supplied to the electrolyte reservoir via a line 48 and a valve 49 11 can be supplied.
  • the line 48 is connected via a valve 50 to the inert liquid reservoir 24 in order to also be able to clean the chambers 31 and 32 with inert liquid.
  • the chamber wall 39 located between the chambers 29 and 30 is used exclusively for the formation of a liquid lock, the chamber wall 39 of the two chambers 29 and 30 being supplied via a line 51 with the aid of a pump 52 from an inert liquid storage container 53, namely via connecting bores 54 according to FIG. 2a, which are connected via holes 55 to the openings 56 to be treated adapted to the goods 1a and 1b.
  • These openings 56 are now supplied with an amount of inert liquid such that they are always completely filled with inert liquid and thus seal them airtight.
  • a connection bore 57 which is connected to the chamber 29. However, it could also be connected to the chamber 30, but this is not shown.
  • the chamber 30 is rather emptied via a connection bore 58 of the chamber wall 40.
  • the inert liquid is in turn fed to the inert liquid reservoir 53 via a line 59 according to FIG.
  • a valve 60 is also provided in this circuit.
  • Connection bores 61 and 62 in the chamber walls 38 and 41 serve for connection to inert gas N 2 , since the inert liquid should not come into contact with atmospheric oxygen if possible.
  • the line 48 is connected via a connection bore 63 according to FIG.
  • the roll 2 of the unwinding unit 3 is likewise self-contained and partially filled with inert liquid, this inert liquid being able to be fed from a container 68 via lines 64 and 65 with the aid of a pump 66 and valve 67 and emptied again, if one newly filled roll is inserted.
  • the unwinding unit 3 is also under a protective gas atmosphere N 2 and in the selected exemplary embodiment is tightly connected to the chamber 29 of the lock arrangement 4 via a square tube connection 69.
  • This square tube connector 69 also has an insert with openings which are adapted to the cross section of the material to be treated and which is connected to the inert circuit system 51 to 53, 59 via a corresponding connection bore and line, as shown on the left in FIG.
  • the chamber wall 41 like the chamber walls 38 to 40, has openings 70 which are adapted to the cross section of the material to be treated in such a way that as little electrolyte as possible can pass from the tube cell 5 into the camera 31.
  • the lock arrangement 6 has two more chambers than the lock arrangement 4, because in the lock arrangement 6 the two chambers 33 and 34 serve to wash the already aluminized goods 1.
  • the chambers 32, 35 and 36 correspond to the chambers 29 to 31 of the lock arrangement 4.
  • the chambers 32 to 36 are basically the same as the chambers 29 to 31.
  • the chamber walls 38, 40 and 41 of the lock arrangement 4 correspond to the chamber walls 42, 43, 45 and 47 of the lock arrangement 6.
  • the chamber wall 39 corresponds to the two chamber walls 41 and 46 of the lock arrangement 6. Since the chamber wall 44 is not only for sealing, but also also serves to wash the already aluminized goods, the connection bore of the chamber 44 is connected to an evaporator 73 via a line 71 and valve 72.
  • the inert liquid obtained from the electrolyte by distillation is pumped through the longitudinal bores of the chamber wall 44 into the space between the strip-like material 1 and the breakthroughs.
  • the inert liquid emerging into the chambers 33 and 34 and enriched with electrolyte is in turn fed to the electrolyte reservoir 1 via the corresponding connection bores and a pipeline 75.
  • the chamber wall 46 is the same as the chamber wall 39 is formed, which is connected to a reservoir 78 via a connection bore and pipe 76, a valve 77.
  • the inert liquid stored in the storage container 78 is pumped with the aid of a feed pump 79 through the corresponding bores in the intermediate wall 46, which essentially serves as a liquid lock.
  • the inert liquid is returned to the reservoir 78 via a line 99, which communicates with the chambers 35 and 36 or the connection bores of the chamber walls 45 and 46.
  • FIG. 2 shows a section through part of the tubular cell 5 and through the lock arrangement 4.
  • the tubular cell 5 consists of two square tubes 5a and 5b flanged together, in which interchangeable insert pieces 80 and 81 are arranged, which on the one hand are the clear ones Width of the square tubes 5a and 5b are adapted and on the other hand are shaped so that they have longitudinal grooves 82 to 84, in which arranged on both sides of the band-shaped material 1a and 1b anodes 85 and 86 are arranged, which are by means of screws 87 between the Inserts 80 and 81 held and form a unit with them.
  • the longitudinal grooves 82 and 83 are formed so that the inserts 80 and 81 seal against the anodes 85, 86.
  • insulating intermediate pieces 88 are provided on both sides of the anodes 85.
  • the opposite sides of the inserts 80 and 81 are formed so that they form channels 89 for the electrolyte, which is pumped through the inlet and outlet ports 9 to 10.
  • the anodes 85 and 86 are contacted from above with the aid of contact pins 90 and 91, which can be inserted via insulating intermediate pieces 92.
  • the outlet connection 9 is flanged directly onto the square tube 5a.
  • FIG. 2e also shows the possibility of contacting the strip-like material 1a and 1b with the aid of resilient contact pins 97 which are connected to the cathode of the power source.
  • the contact pins 97 are guided in the square tubes 5a and 5b with the aid of the insulating intermediate pieces 98.
  • the contact can also be made in a highly different manner if this is expedient.
  • the strip-like material 1a and 1b is only partially aluminized, in the region of the channels 89. If the strip-shaped material 1a and 1b is to be aluminized over the entire width, the electrolyte must have access to it have the entire width of the goods to be treated 1a and 1b, 89 guides for the band-shaped goods 1a and 1b then having to be provided within the channels.
  • the chambers 29 to 36 of the lock arrangements 4 and 6 are also relatively easy to manufacture, since they practically consist only of square chamber walls 38 to 47 and the square tubes 37.
  • two band-shaped goods 1a a and 1 b are aluminized at the same time.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Prevention Of Electric Corrosion (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP82107244A 1981-09-23 1982-08-10 Anlage zum galvanischen Abscheiden von Metallen, insbesondere von Aluminium Expired EP0075099B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82107244T ATE13913T1 (de) 1981-09-23 1982-08-10 Anlage zum galvanischen abscheiden von metallen, insbesondere von aluminium.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813137908 DE3137908A1 (de) 1981-09-23 1981-09-23 Anlage zum galvanischen abscheiden von metallen, insbesondere von aluminium
DE3137908 1981-09-23

Publications (2)

Publication Number Publication Date
EP0075099A1 EP0075099A1 (de) 1983-03-30
EP0075099B1 true EP0075099B1 (de) 1985-06-19

Family

ID=6142436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82107244A Expired EP0075099B1 (de) 1981-09-23 1982-08-10 Anlage zum galvanischen Abscheiden von Metallen, insbesondere von Aluminium

Country Status (7)

Country Link
US (1) US4419204A (enrdf_load_stackoverflow)
EP (1) EP0075099B1 (enrdf_load_stackoverflow)
JP (1) JPS5873789A (enrdf_load_stackoverflow)
AT (1) ATE13913T1 (enrdf_load_stackoverflow)
BR (1) BR8205541A (enrdf_load_stackoverflow)
DE (2) DE3137908A1 (enrdf_load_stackoverflow)
ZA (1) ZA826954B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19716493A1 (de) * 1997-04-19 1998-10-22 Aluminal Oberflaechentechnik Verfahren zum elektrolytischen Beschichten von metallischen oder nichtmetallischen Endlosprodukten und Vorrichtung zur Durchführung des Verfahrens

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9157160B2 (en) 2013-08-22 2015-10-13 Ashworth Bros., Inc. System and method for electropolishing or electroplating conveyor belts

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1768358A (en) * 1925-05-21 1930-06-24 Florence M Harrison Electrolytic process and apparatus
US2445675A (en) * 1941-11-22 1948-07-20 William C Lang Apparatus for producing coated wire by continuous process
US2974097A (en) * 1957-11-12 1961-03-07 Reynolds Metals Co Electrolytic means for treating metal
GB1135023A (en) * 1965-01-28 1968-11-27 Wilkinson Sword Ltd Improvements in or relating to the production of cutting edges
BE761101A (fr) * 1970-03-25 1971-05-27 Nisshin Steel Co Ltd Dispositif pour la metallisation galvano-plastique des metaux
US3865701A (en) * 1973-03-06 1975-02-11 American Chem & Refining Co Method for continuous high speed electroplating of strip, wire and the like
US4220506A (en) * 1978-12-11 1980-09-02 Bell Telephone Laboratories, Incorporated Process for plating solder
JPS6128756A (ja) * 1984-07-18 1986-02-08 Nippon Denso Co Ltd 遊星歯車減速機構付スタ−タ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19716493A1 (de) * 1997-04-19 1998-10-22 Aluminal Oberflaechentechnik Verfahren zum elektrolytischen Beschichten von metallischen oder nichtmetallischen Endlosprodukten und Vorrichtung zur Durchführung des Verfahrens
DE19716493C2 (de) * 1997-04-19 2001-11-29 Aluminal Oberflaechentechnik Verfahren zum elektrolytischen Beschichten von metallischen oder nichtmetallischen Endlosprodukten und Vorrichtung zur Durchführung des Verfahrens

Also Published As

Publication number Publication date
BR8205541A (pt) 1983-08-30
DE3264274D1 (en) 1985-07-25
ZA826954B (en) 1983-07-27
DE3137908A1 (de) 1983-04-07
EP0075099A1 (de) 1983-03-30
JPS5873789A (ja) 1983-05-04
JPH0237435B2 (enrdf_load_stackoverflow) 1990-08-24
ATE13913T1 (de) 1985-07-15
US4419204A (en) 1983-12-06

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