Electro dialysis Cell

Electro dialysis Cell


The method of electrophoretic painting is one of the most modern technologies for the surface treatment of metal objects. The automotive industry has the largest share in the development of cataphoretic technology, where the anti-corrosion resistance of car bodies and other components is the focus of interest of all producers. The high quality of the surface treatment, together with the advantageous economic and ecological conditions, has predetermined this technology for use in other mechanical engineering and consumer industries.


Cataphoresis is a method for electrochemical paint application, in which the object to be painted is connected cathodically to direct current in the electrolyte (aqueous paint bath) and then color cations are deposited on the article. The electrophoretic box with an ion exchange membrane (plate or tubular) is connected as an anode and serves firstly as a counter electrode and secondly to maintain the concentration balance in the paint bath.

Electrode (Anode)

The round cell EFC-Anodex is a cylindrical system, which on the one hand ensures the function of the counter electrode to the cathode and on the other hand enables the excess anions to be continuously separated from the cataphoresis bath thanks to the anex membrane.The cylindrical anode is located in the middle of the EFC cell so that the construction of the lower lid and upper head ensures their desired centering. This construction also allows the anode to rotate freely when the top head screw is loosened, which ensures more uniform wear of the anode material due to the electrochemical solution during the cataphoresis process.

Ion-Exchange Membrane RALEX MEMRANE® Type AMH-HD

The anex membrane is installed in such a way that it is potted in the lower lid and upper head and is reinforced with a perforated PP tube. The perforated tube delimits the space between the membrane and electrode for effective anolyte flow, and its structure enables the required passage of electrical current.There is no expansion of the membrane with loss of free electrode area! In contrast to an extruded membrane, the expansion of which can be up to 15% depending on the bath parameters, the space in the lower pool area is fully utilized. This allows more space to be installed per cell. This is particularly useful in the floor area.

Kopf der Elektrodialyse Zelle

The head construction ensures the required tightness of the entire system and is used for attachment to the pool edge. A hose nipple in the middle of the anode serves as the inflow of the anolyte. The recycling of the anolyte ensures a sufficient and even anolyte circulation and an effective discharge of the acid substance (O2) generated on the anode surface during the electrochemical process.The electrical connection to a direct current source is also part of the design.

Auslegung / Angebot

Um Ihnen ein Angebot über Elertrodialyse Zellen / Membranen zu erstellen benötigen wir nur wenige Angaben wie Kopflänge der Zelle sowie die aktive  Membranelänge. Alternativ können wir mittels unserer Auslegungssoftware ihre bestehende Konfiguration überprüfen bzw, optimieren.

Hierzu benötigen wir folgende Angaben

  • Bauteilhöhe [B]
  • Oberfläche pro Warenträger getaucht
  • Beckenhöhe [H]
  • Höhe zwischen oberer Beckenrand und Lackniveau
  • Lackniveau und Bauteil [I]

Gerne stehen wir Ihnen auch persönlich bei Fragen zur Qualitätsoptimierung, Produktionserweiterung und Problemlösung zur Verfügung.

Design data

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