EP1091025A2 - In Flachbauweise ausgeführte Anodenzelle zur Verwendung in kataphoretischen Beschichtungsbädern - Google Patents
In Flachbauweise ausgeführte Anodenzelle zur Verwendung in kataphoretischen Beschichtungsbädern Download PDFInfo
- Publication number
- EP1091025A2 EP1091025A2 EP00117483A EP00117483A EP1091025A2 EP 1091025 A2 EP1091025 A2 EP 1091025A2 EP 00117483 A EP00117483 A EP 00117483A EP 00117483 A EP00117483 A EP 00117483A EP 1091025 A2 EP1091025 A2 EP 1091025A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- anode cell
- anode
- anolyte
- cell according
- wall
- 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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Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/22—Servicing or operating apparatus or multistep processes
Definitions
- cataphoretic coating baths for example for Priming and painting car bodies is the one Current flow in the bath liquid causing cataphoresis Anode cells are generated along the pelvic rim in vertical or horizontal orientation in the bath liquid are arranged immersed, while that to be coated Workpiece, e.g. a car body, as a cathode is switched.
- the anode cells have a metal anode, which in a separated from the bath liquid by an ion exchange membrane and flowed through by an anolyte circulating through it Chamber is arranged.
- the anode cell then has the shape of a flat box with a height of about two meters, one Width of about 0.80 meters and a depth of a few centimeters.
- the box consists of a frame with a Back wall; the front wall is through the ion exchange membrane formed against a correspondingly stable support grid the hydrostatic pressure is supported.
- the plate-shaped The anode is in use in vertical or horizontal Orientation immersed in the bath liquid Box on the lower frame spar.
- the anolyte is from a supply connection on the upper frame spar two pipes running along the side frame spars or hoses in the anode cell and down emerges from there horizontally over the lower frame spar Pipe sections into the interior of the cell.
- the anolyte drain occurs from the upper area of the anode cell.
- the known anode cells in this flat design have different ones Disadvantage. It has been shown that the plate anode corroded quickly and badly in the lower area, whereby especially the corner areas strong in a relatively short time be eaten away. Sludge deposits and accumulations in the lower area of the anode cell, also from the strong Anode corrosion prevents the anolyte circulation, because they are the outlet of the anolyte from the above the bottom Frame frame extending pipe sections hinder or even To block. Replacing the plate anode is difficult because the plate anode is so heavy that a hoist is necessary to pull them out of the anode cell and insert a new plate anode.
- the whole anode cell is pretty heavy because of the hydrostatic pressure must be built accordingly stable and in particular that Support grid for the ion exchange membrane is correspondingly stable have to be.
- the effect of the bath liquid is less the problem from the outside on the anode cell because the Anode cell itself is filled with anolyte. But it will Drained coating bath, the inner hydrostatic affects Pressure of the anode cell filled with anolyte because of the large height of the anode cell.
- the invention has for its object a significantly improved To create anode cell in flat design, which the problems identified at least significantly reduced.
- the anode cell consists of a frame 1 made of plastic, a rear wall 2 also made of plastic, with an ion exchange membrane 3 forming the front wall a supporting grid 4 made of glass fiber reinforced as a diagonal grid Plastic, along the front of the frame arranged angle profiles 5, which the membrane 3 and attach the support grid 4 to the front of the frame 1, a plurality of over the front surface of the anode cell outside and each on the side frame bars attached reinforcement brackets 6 made of steel, two in the side frame spars 11 extending anolyte supply pipes 7, and two plate anodes 8.
- the two plate anodes 8 are arranged side by side.
- the two anolyte lines 7 in the two side frame members 11, the one in the uppermost area of the anode cell common anolyte supply connection converge, open with their lower ends in the lower cross member 12 of the Frame, which is designed as a closed duct.
- the cross member 12 In its upper, forming the bottom of the anode cell chamber Wall, the cross member 12 has a number of outlet openings 13 through which the supplied anolyte from below into the Inside the anode cell chamber enters. The return of the Anolytes from inside the anode cell chamber are made by top area of the anode cell.
- the two plate anodes 8 are not on the lower cross member 12 of the frame, but are guided laterally, but otherwise freely suspended in the anode cell. Your lower edges have a certain distance from the one with the Exit bores 13 provided upper wall of the cross member 12. In addition, the plate anodes 8 are everywhere on their edges rounded so that there are no excessive edges Field concentrations arise and corrosion is reduced becomes. Because the lower edges of the plate anodes 8 with a certain Distance above the lower cross member 12 are arranged and thus also over the outlet bores 13, the Plate anodes uniformly everywhere in the area of their lower edges flows around supplied anolyte, so that the conventional anode cells appearing in flat construction strong signs of corrosion in the lower plate anode area reduce significantly.
- 11 are directly on the side frame bars closable above the cross member 12 with a plug 14 Drainage openings are provided, which make it possible to To empty the anode cell and any sludge accumulation in the easy to rinse out the lower area. Because the anode cell chamber below through the smooth upper wall of the lower crossbar 12 is complete and there in contrast to the conventional Low-rise anode cells no anolyte tubes above the floor there are no corners and dead spaces in which sludge deposits can accumulate and settle.
- the formation of the support grid 4 as a diagonal grid brings also have a number of advantages. For one thing the arrangement is statically cheaper than one with vertical and horizontal bars formed lattice because the diagonal 6 bars extending between the reinforcement brackets an improvement of the support effect by the reinforcement bracket 6 condition. But also the dirt deposits on the Support grids required for construction are significantly reduced. While with a support grid with vertical and horizontal Lattice bars the dirt everywhere the horizontal bars would collect Contamination at most in the lower corners of the individual Mesh openings at where they go through to those in the coating bath prevailing bath liquid movements washed away more easily become.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
- Fig. 1
- eine teilweise aufgebrochene Frontansicht einer Anodenzelle nach der Erfindung, und
- Fig. 2
- eine teilweise aufgebrochene Seitenansicht der Anodenzelle nach Fig. 1.
Claims (12)
- Anodenzelle in Flachbauweise zur Verwendung in kataphoretischen Beschichtungsbädern, bestehend aus einem in Form eines flachen Kastens ausgebildeten Gehäuse mit einem Rahmen (1), einer Rückwand (2), einer die Frontwand bildenden, mittels eines Stützgitters (4) abgestützten Ionenaustauschermembran (3), einer plattenförmigen Anode (8), Anolytenzu- und -ableitungsanschlüssen und mit vom Anolytenzuleitungsanschluß in den unteren Endbereich der Anodenzelle verlaufenden Anolytenleitungen (7),
dadurch gekennzeichnet, daßdie untere Begrenzung des Anodenzelleninnenraums durch eine im wesentlichen glatte Wand eines mit den Anolytenleitungen (7) verbundenen Anolytenkanals gebildet ist, in welcher eine Mehrzahl von Austrittsöffnungen (13) für den Anolyten gebildet sind, unddie plattenförmige Anode (8) hängend im Anodenzelleninneren angeordnet ist und mit ihrer Unterkante mit gewissem Abstand oberhalb der genannten Wand und der darin gebildeten Austrittsöffnungen (13) endigt. - Anodenzelle nach Anspruch 1, wobei ein unterer Querholm (12) des Rahmens (1) als Anolytenkanal ausgebildet ist, in welchen die Anolytenleitungen (7) einmünden, und dessen obere Wand die genannte Wand (13) bildet.
- Anodenzelle nach Anspruch 1 oder 2, wobei alle Kanten der plattenförmigen Anode (8) gerundet sind.
- Anodenzelle nach einem der Ansprüche 1 bis 3, wobei die plattenförmige Anode ihrer Breite nach in zwei separate und etwa flächenbündig nebeneinander angeordnete Halbanoden unterteilt ist, die jeweils gesondert aus der Anodenzelle nach oben herausziehbar bzw. in die Anodenzelle einschiebbar sind.
- Anodenzelle nach einem der Ansprüche 1 bis 4, wobei die Anolytenleitungen (7) in den seitlichen vertikalen Rahmenholmen (11) verlaufen.
- Anodenzelle nach einem der Ansprüche 1 bis 5, wobei unmittelbar über der genannten Wand (13) eine durch einen Stopfen (14) verschließbare Anolytenablaßöffnung vorgesehen ist.
- Anodenzelle nach Anspruch 6, wobei zwei Ablaßöffnungen jeweils an den beiden seitlichen Rahmenlängsholmen (11) vorgesehen sind.
- Anodenzelle nach einem der Ansprüche 1 bis 7, wobei vorderhalb des Stützgitters (4) eine Mehrzahl von mit gegenseitigen vertikalen Abständen angeordneten Verstärkungsbügeln (6) angeordnet ist, die beiderseits an den seitlichen Rahmenholmen (11) befestigt sind.
- Anodenzelle nach Anspruch 4 oder Anspruch 8 in der Rückbeziehung auf Anspruch 4, wobei die beiden Halbanoden einen geringen seitlichen Abstand voneinander haben und in dem Zwischenraum zwischen den beiden Halbanoden Zug- und Stützverbindungen zwischen der Rückwand (2) und dem Stützgitter (4) bzw. den Verstärkungsbügeln (6) vorgesehen sind.
- Anodenzelle nach einem der Ansprüche 1 bis 9, wobei das Stützgitter (4) als Diagonalgitter ausgeführt ist.
- Anodenzelle nach einem der Ansprüche 1 bis 10, wobei das Stützgitter aus glasfaserverstärktem Kunststoff hergestellt ist.
- Anodenzelle nach einem der Ansprüche 1 - 11, wobei die Ionenaustauschermembran (3) und das Stützgitter (4) auf der Frontseite des Rahmens (1) mittels Winkelprofilen (5) aus Kunststoff befestigt sind, auf welche die gegebenenfalls vorhandenen Verstärkungsbügel (6) aufgesetzt sind.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19948177A DE19948177C1 (de) | 1999-10-07 | 1999-10-07 | In Flachbauweise ausgeführte Anodenzelle zur Verwendung in kataphoretischen Beschichtungsbädern |
| DE19948177 | 1999-10-07 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1091025A2 true EP1091025A2 (de) | 2001-04-11 |
| EP1091025A3 EP1091025A3 (de) | 2002-02-13 |
| EP1091025B1 EP1091025B1 (de) | 2006-02-22 |
Family
ID=7924722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00117483A Expired - Lifetime EP1091025B1 (de) | 1999-10-07 | 2000-08-12 | In Flachbauweise ausgeführte Anodenzelle zur Verwendung in kataphoretischen Beschichtungsbädern |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1091025B1 (de) |
| AT (1) | ATE318332T1 (de) |
| DE (2) | DE19948177C1 (de) |
| ES (1) | ES2259279T3 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2918673A1 (fr) * | 2007-07-12 | 2009-01-16 | Siemens Vai Metals Tech Sas | Installation et procede pour l'etamage electrolytique de bandes d'acier |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10051683A1 (de) * | 2000-10-18 | 2002-05-02 | Duerr Systems Gmbh | Anodenzelle zur kathodischen Elektro-Tauchlackierung von Werkstücken |
| DE202018001747U1 (de) | 2018-04-04 | 2018-06-22 | Ekk Anlagentechnik Gmbh & Co. Kg | Anodenzelle zum Einsatz in kataphoretischen Beschichtungsbädern |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1192531A (en) * | 1968-05-14 | 1970-05-20 | Carrier Engineering Co Ltd | Cathode Structure for Use when Coating Articles with Paint by an Electro-Deposition Process |
| GB1423369A (en) * | 1973-09-24 | 1976-02-04 | Electricity Council | Electrolytic cells |
| US4514266A (en) * | 1981-09-11 | 1985-04-30 | Republic Steel Corporation | Method and apparatus for electroplating |
| JPS5893893A (ja) * | 1981-11-30 | 1983-06-03 | Tokuyama Soda Co Ltd | 連続メツキ装置 |
| DE3719440C1 (en) * | 1987-06-11 | 1988-09-01 | Elektro Kohle Koeln | Anode cell for electrophoretic metal-coating baths |
-
1999
- 1999-10-07 DE DE19948177A patent/DE19948177C1/de not_active Expired - Fee Related
-
2000
- 2000-08-12 DE DE50012248T patent/DE50012248D1/de not_active Expired - Lifetime
- 2000-08-12 AT AT00117483T patent/ATE318332T1/de not_active IP Right Cessation
- 2000-08-12 EP EP00117483A patent/EP1091025B1/de not_active Expired - Lifetime
- 2000-08-12 ES ES00117483T patent/ES2259279T3/es not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2918673A1 (fr) * | 2007-07-12 | 2009-01-16 | Siemens Vai Metals Tech Sas | Installation et procede pour l'etamage electrolytique de bandes d'acier |
| WO2009016291A3 (fr) * | 2007-07-12 | 2009-12-17 | Siemens Vai Metals Technologies Sas | Installation et procede pour l'etamage electroly tique de bandes d' acier |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19948177C1 (de) | 2000-12-14 |
| DE50012248D1 (de) | 2006-04-27 |
| EP1091025A3 (de) | 2002-02-13 |
| ATE318332T1 (de) | 2006-03-15 |
| ES2259279T3 (es) | 2006-10-01 |
| EP1091025B1 (de) | 2006-02-22 |
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