EP1889951B1 - Appareil et procédé pour l'anodisation de pièces à usiner - Google Patents

Appareil et procédé pour l'anodisation de pièces à usiner Download PDF

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Publication number
EP1889951B1
EP1889951B1 EP06090143A EP06090143A EP1889951B1 EP 1889951 B1 EP1889951 B1 EP 1889951B1 EP 06090143 A EP06090143 A EP 06090143A EP 06090143 A EP06090143 A EP 06090143A EP 1889951 B1 EP1889951 B1 EP 1889951B1
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EP
European Patent Office
Prior art keywords
treated
elevations
clamping jaw
titanium
intermediate part
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.)
Active
Application number
EP06090143A
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German (de)
English (en)
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EP1889951A1 (fr
Inventor
Wolf-Thilo Fortak
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.)
Wolf-Thilo Fortak Industrieberatung und Techn Sevice fur Die Galvanotechnik
Original Assignee
Wolf-Thilo Fortak Industrieberatung und Techn Sevice fur Die Galvanotechnik
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Publication date
Application filed by Wolf-Thilo Fortak Industrieberatung und Techn Sevice fur Die Galvanotechnik filed Critical Wolf-Thilo Fortak Industrieberatung und Techn Sevice fur Die Galvanotechnik
Priority to AT06090143T priority Critical patent/ATE486980T1/de
Priority to EP06090143A priority patent/EP1889951B1/fr
Priority to DE502006008231T priority patent/DE502006008231D1/de
Publication of EP1889951A1 publication Critical patent/EP1889951A1/fr
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Publication of EP1889951B1 publication Critical patent/EP1889951B1/fr
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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
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/005—Apparatus specially adapted for electrolytic conversion coating
    • 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
    • C25D17/005—Contacting devices
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/06—Suspending or supporting devices for articles to be coated

Definitions

  • the invention relates to an apparatus and a method for the electrolytic treatment of metallic workpieces, including sheet-like, large and thin material to be treated of aluminum or aluminum alloys, by means of a method in which the workpieces are subjected to high electrical current.
  • the US Pat. No. 4,085,997 and the GB 1 468 118 A disclose an anodization device that uses titanium clamping jaws that hold the material to be treated between two points of contact through which current flows.
  • Spring-loaded clamping elements made of titanium, which hold the item to be treated with their flat contact surfaces are made of DE 102 45 182 A1 known.
  • the US Pat. No. 4,615,785 describes an apparatus for anodization, the clamping elements contain titanium, which are provided with a tooth-like handle for attachment to a bath rod (bath bar).
  • the disadvantage here is once the poor electrical conductivity (15 times lower than aluminum), so that previously titanium anodes are used only for smaller aluminum parts.
  • Another disadvantage is that build up uncontrolled contact bridges that lead to burns in Aluminium asidesgut. The contact current is subject to fluctuations, with the result that the layer thickness of the layer produced by the anodization can not be exactly defined.
  • the DE 34 47 733 discloses a contactless anodic oxidation of aluminum.
  • the object of the invention is to realize a device for electrochemical treatment of sheet-like, large and thin material to be treated, in which a regular cleaning or stripping of the support frame or its parts, such as terminals, can be dispensed with. Furthermore, a minimum possible surface damage in the field of attachment and contacting of the material to be treated should be achieved.
  • a device for the electrolytic treatment of particular large, thin and sheet-like material is provided with clamping or support arms arranged jaws for the treated, wherein at least one jaw made of titanium or a titanium alloy and this Titanklemmbacke directed to the treated has a surface with elevations , so that the current flow takes place via contact points or contact edges of the elevations.
  • the elevations are preferably formed pyramid-like with a tip.
  • a substantially punctiform contact can also be achieved by hemispherical-shaped elevations or by a corrugation.
  • An edge-shaped contacting is achieved with elevations with a prismatic shape with contact edges facing the item to be treated.
  • the surveys may be a thread profile.
  • the device described hitherto is particularly suitable for sheet-like, large and thin items made of aluminum or aluminum alloys, since usually the clamping points are removed after separation of the anodization process by separation, it has proven useful in structures where no separation of the clamping points is provided to arrange an intermediate part made of aluminum or an aluminum alloy between the jaw or jaws and the item to be treated. This is preferably releasably connected to the respective jaw, so that it for Pickling is removable or handled as a "disposable item".
  • the intermediate part has a smooth surface on the side facing the clamping jaw and is provided with elevations on the side facing the material to be treated, preferably with small cones, cones, truncated cones and / or lamellae.
  • the non-anodized surface areas on the material to be treated are then formed very small area and not or only slightly visible.
  • another embodiment provides a flushing possibility in the form of on the surface of the clamping jaw from outer edge to outer edge continuously arranged grooves.
  • the process stream for electrolytic treatment is conducted in a punctiform manner or over an edge into the material to be treated. This is achieved by the corresponding structuring of the surface of at least one titanium clamping jaw.
  • currents of 4 and more amps / contact point can be transferred during anodizing.
  • Clamping jaws with a cross-sectional area of 23 x 23 mm can be used to transfer currents of 300 amperes.
  • Fig. 1 is the basic structure of an anodizing system shown.
  • the treatment tank 11 of the anodizing plant may have a width of about 11 m and more and a height of 2.5 m and more, for example, sheet-like, large and thin material to be treated 6, such as aluminum foil, in the dimensions of 10 x 1.5 m to treat.
  • the item to be treated 6 is attached to the clamping jaws 1, 2 between the two right and left arranged on a goods carrier 12 support or clamping arms 13.
  • the product carrier 12 is arranged to be movable over the treatment trough 11. The supply of the anode current via the goods carrier 12, the support or clamping arms 13 in the jaws 1, 2 and from these into the material to be treated 6, for. an aluminum foil.
  • the layer thickness moves in the nanometer range, so that in the described structuring of the surface 3 and at contact pressures between the jaws 1, 2 of 1.5 kp / mm 2 (118 - 147 kPa) and more overcome this oxide layer and the current flow is ensured controlled ,
  • a jaw 2 is shown in detail. While the surface of the clamping jaw 1 is planar, the surface 3 of the illustrated jaw 2 has a structured shape by elevations 4. This can also be the case with both jaws 1, 2. In the figure, the elevations 4 are only partially drawn. Provided is preferably a full-surface trimming the surface 3 with elevations. 4
  • the distance between adjacent elevations should preferably be between 0.1 - 4 mm and / or the elevations have the height of 0.3 - 4 mm.
  • surveys with a pyramid-like tip have proven.
  • Figure 3 shows an intermediate part 7 preferably used in space-shaped treated material 6 between the jaw 2, the surface of which has elevations 4 and the treated 6.
  • the intermediate part 7 is made of aluminum or an aluminum alloy and is detachably connected to the jaw 2.
  • the intermediate part 7 has on the side facing the jaw 2 a smooth surface and thus represents an analogue contact transition as it has been described above in a flat material to be treated 6.
  • the anodizing stream is selectively transferred from the titanium clamping jaw 2 into the aluminum intermediate part 7.
  • the intermediate part 7 on the treated material 6 side facing also with elevations 9, preferably one with small pins, Cones, truncated cones or lamellar surface 8 on.
  • the anodizing stream is directed selectively or on a small area from the intermediate part 7 into the material to be treated 6.
  • the journal cross section is 1.4 x 1.4 mm in the illustrated intermediate part 7 with the cross section 23 x 23 mm.
  • the intermediate part 7 is coated during the anodization with an oxide layer, so that it requires a pickling in a known manner or the intermediate part 7 is exchanged and disposed of the oxidized.
  • the intermediate part 7 and the jaw 2 are releasably connected to each other.
  • the clamping jaw 2 has at least one angle bracket 10, which comprises the intermediate part 7 on one side for producing a detachable connection, wherein the free leg of the bracket 9 engages between the elevations 9 of the surface 8 of the intermediate part 7, without overtoping them in the direction of material to be treated 6.
  • the elevations 9 are shown in the figure only partially.
  • the material to be treated 6 can be anodized in such a way that the nips, over which the anode current flows, are formed over a small area on the item to be treated 6 and thus are not or only slightly visible on the item to be treated 6 after the anodization. Furthermore, with the reusable nature of the power transmission to different frame areas by the safe Stromübertragles between titanium contacts with each other opens up the possibility to realize even for large-scale ceremonies ceremoniessgut Universal rack systems made of titanium and titanium alloys.

Claims (19)

  1. Dispositif de traitement électrolytique d'un produit de traitement (6) avec des mâchoires (1, 2) pour le produit de traitement disposées sur des bras de serrage ou porteurs (13), au moins une mâchoire (2) étant réalisée en titane ou en alliage de titane et cette mâchoire en titane présentant, en direction du produit de traitement, une surface (3) avec des reliefs (4), de sorte que le flux de courant s'effectue par le biais de points de contact ou d'arêtes de contact des reliefs (4).
  2. Dispositif selon la revendication 1, caractérisé en ce que la distance entre des reliefs (4) voisins est comprise entre 0,3 et 4 mm.
  3. Dispositif selon la revendication 1 ou la revendication 2, caractérisé en ce que les reliefs (4) présentent une hauteur de 0,1 à 4 mm.
  4. Dispositif selon une des revendications 1 à 3, caractérisé en ce que les reliefs (4) sont constitués de façon pyramidale avec une pointe.
  5. Dispositif selon une des revendications 1 à 3, caractérisé en ce que
    les reliefs (4) sont constitués de façon hémisphérique ou bien sous forme de cannelures.
  6. Dispositif selon une des revendications 1 à 3, caractérisé en ce que
    les reliefs (4) présentent une forme prismatique avec des arêtes de contact dirigées vers le produit de traitement.
  7. Dispositif selon une des revendications 1 à 3, caractérisé en ce que les reliefs (4) sont constitués sous forme de profil fileté.
  8. Dispositif selon une des revendications 1 à 7, caractérisé en ce que
    des rainures (5) sont disposées sur la surface (3) de la mâchoire (2) de façon continue d'une arête extérieure à l'autre.
  9. Dispositif selon la revendication 8, caractérisé en ce que
    les rainures (5) sont disposées dans la direction d'égouttage dans la surface (3) de la mâchoire (2).
  10. Dispositif selon une des revendications 1 à 10, caractérisé en ce que,
    entre la mâchoire (2) dont la surface présente des reliefs (4) et le produit de traitement (6), il est disposé une pièce intermédiaire (7) en aluminium ou en alliage d'aluminium.
  11. Dispositif selon la revendication 10, caractérisé en ce que
    la pièce intermédiaire (7) est raccordée de façon amovible à la mâchoire (2).
  12. Dispositif selon la revendication 10 ou la revendication 11, caractérisé en ce que
    la pièce intermédiaire (7) présente, au moins sur le côté tourné vers la mâchoire (2), une surface lisse.
  13. Dispositif selon une des revendications 10 à 12, caractérisé en ce que
    la pièce intermédiaire (7) présente, sur le côté tourné vers le produit de traitement (6), une surface (8) munie de reliefs (9), de préférence munie de tétons, de cônes, de troncs de cône et/ou de lamelles.
  14. Dispositif selon une des revendications 11 ou 13, caractérisé en ce que la mâchoire (2) présente au moins un étrier coudé (10) qui entoure d'un côté la pièce intermédiaire (7) pour la formation d'un raccordement amovible, la branche libre de l'étrier (9) engrenant entre les reliefs (9) de la surface (8) de la pièce intermédiaire (7) sans faire saillie au-delà de ces reliefs en direction du produit de traitement (6).
  15. Dispositif selon une des revendications 1 à 14, caractérisé en ce que,
    au niveau d'un bâti destiné à introduire le produit de traitement (6) dans une cuve de traitement (11), les transitions conduisant le courant depuis le porte-article en aluminium (12) vers les bras de serrage ou porteurs (13) réalisés en titane ou dans un alliage de titane et vers les mâchoires (2) pour le produit de traitement (6) sont constituées par l'utilisation de contacteurs en titane avec la surface (3) des mâchoires (2) munie de reliefs (4).
  16. Procédé de traitement électrolytique en particulier d'un grand produit de traitement étendu mince qui est retenu entre des mâchoires pendant le traitement, au moins une mâchoire étant réalisée en titane ou en alliage de titane et présentant, sur la surface tournée vers le produit de traitement, des reliefs pointus ou en forme de d'arête, de sorte que le courant de procès pour le traitement électrolytique est conduit dans le produit de traitement sous forme ponctuelle ou par le biais d'arêtes,
    ou une pièce intermédiaire en aluminium ou en alliage d'aluminium étant disposée entre le produit de traitement et la mâchoire de sorte que le courant de procès est conduit sous forme ponctuelle ou par le biais d'arêtes depuis la mâchoire jusque dans la pièce intermédiaire et, de là, dans le produit de traitement.
  17. Procédé selon la revendication 16, caractérisé en ce que,
    lors de l'anodisation, des courants de 4 ampères ou plus par point de contact sont transmis.
  18. Procédé selon la revendication 16 ou 17, caractérisé en ce que
    des rainures existantes dans la surface de la mâchoire munie de reliefs servent à laver la mâchoire (2) après le traitement électrolytique.
  19. Procédé selon la revendication 16 à 18, caractérisé en ce que
    la pression de contact des mâchoires sur le produit de traitement est égale ou supérieure à 1,5 kp/mm2 (1,47 x 105 Pa).
EP06090143A 2006-08-18 2006-08-18 Appareil et procédé pour l'anodisation de pièces à usiner Active EP1889951B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT06090143T ATE486980T1 (de) 2006-08-18 2006-08-18 Vorrichtung und verfahren zum anodisieren von behandlungsgut
EP06090143A EP1889951B1 (fr) 2006-08-18 2006-08-18 Appareil et procédé pour l'anodisation de pièces à usiner
DE502006008231T DE502006008231D1 (de) 2006-08-18 2006-08-18 Vorrichtung und Verfahren zum Anodisieren von Behandlungsgut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06090143A EP1889951B1 (fr) 2006-08-18 2006-08-18 Appareil et procédé pour l'anodisation de pièces à usiner

Publications (2)

Publication Number Publication Date
EP1889951A1 EP1889951A1 (fr) 2008-02-20
EP1889951B1 true EP1889951B1 (fr) 2010-11-03

Family

ID=37984750

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06090143A Active EP1889951B1 (fr) 2006-08-18 2006-08-18 Appareil et procédé pour l'anodisation de pièces à usiner

Country Status (3)

Country Link
EP (1) EP1889951B1 (fr)
AT (1) ATE486980T1 (fr)
DE (1) DE502006008231D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3822394A1 (fr) 2019-11-14 2021-05-19 WTF Galvanotechnik GmbH & Co. KG Dispositif de retenue de pièces lors d'un traitement électrolytique
EP3822393A1 (fr) 2019-11-14 2021-05-19 WTF Galvanotechnik GmbH & Co. KG Dispositif de retenue de pièces lors d'un traitement électrolytique
DE102019008114A1 (de) * 2019-11-14 2021-05-20 WTF Galvanotechnik GmbH & Co. KG Vorrichtung zum Halten von Werkstücken bei der elektrolytischen Behandlung
DE102019008115B4 (de) 2019-11-14 2022-06-02 WTF Galvanotechnik GmbH & Co. KG Vorrichtung zum Halten von Werkstücken bei der elektrolytischen Behandlung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012218025A1 (de) * 2012-10-02 2014-04-03 Manfred Ingelsberger Haltevorrichtung und Träger mit Komponenten aus Aluminium- und Titanwerkstoffen
EP3916134A1 (fr) * 2020-05-26 2021-12-01 Gramm Technik GmbH Dispositif de maintien pour tiges de piston

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2340963A1 (de) 1973-08-13 1975-03-13 Alusuisse Verfahren und vorrichtung zum oxidieren einer folie aus aluminium oder einer seiner legierungen
JPS5432426B2 (fr) 1974-06-08 1979-10-15
GB1468118A (en) 1975-09-27 1977-03-23 Trident Plastics Ltd Clamping arrangement
US4085997A (en) 1977-03-30 1978-04-25 The Boeing Company Anodize clamp
JPS60155699A (ja) 1983-12-27 1985-08-15 Permelec Electrode Ltd 液体給電法による金属の電解処理法
US4615785A (en) 1985-05-13 1986-10-07 Pulido Robert J Clip for anodizing bath and method of using the clip
DE9411523U1 (de) 1993-09-08 1994-09-22 Stohrer Doduco Gmbh & Co Vorrichtung zum anodischen Oxidieren von Werkstücken
DE10145554C1 (de) 2001-09-14 2002-11-28 Atotech Deutschland Gmbh Vorrichtung zur naßchemischen und elektrolytischen Behandlung von sehr dünnem und flachem Behandlungsgut
DE10245182A1 (de) 2002-09-26 2004-04-01 Manfred Ingelsberger Eloxiergestell mit Komponenten aus Titanwerkstoffen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3822394A1 (fr) 2019-11-14 2021-05-19 WTF Galvanotechnik GmbH & Co. KG Dispositif de retenue de pièces lors d'un traitement électrolytique
EP3822393A1 (fr) 2019-11-14 2021-05-19 WTF Galvanotechnik GmbH & Co. KG Dispositif de retenue de pièces lors d'un traitement électrolytique
DE102019008114A1 (de) * 2019-11-14 2021-05-20 WTF Galvanotechnik GmbH & Co. KG Vorrichtung zum Halten von Werkstücken bei der elektrolytischen Behandlung
DE102019008115B4 (de) 2019-11-14 2022-06-02 WTF Galvanotechnik GmbH & Co. KG Vorrichtung zum Halten von Werkstücken bei der elektrolytischen Behandlung

Also Published As

Publication number Publication date
DE502006008231D1 (de) 2010-12-16
ATE486980T1 (de) 2010-11-15
EP1889951A1 (fr) 2008-02-20

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