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Knowledge Bank

WIOPEDIA - The WIOTEC® electroplating encyclopaedia

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This is the generic term for electrochemical painting systems for the automated coating of various goods.

Anodic dip painting (ATL):
The object is connected as an anode (positive pole).

Cathodic dip painting (KTL):
The workpiece to be processed forms the cathode (negative pole) here.

All electrophoretic coatings (suspensions of binders and pigments in fully demineralized water with only low concentrations of organic solvents) are water-soluble. Ionization of binders such as resins is necessary. The binders with low water solubility are organic polymer compounds with embedded functional groups.

In anodic dip coating, a proton is separated/neutralized from the carboxylic acid group by means of an alkali (OH¯ group).

Cathodic dip coating: Tertiary amines are ionized by the addition of protons.

Paint deposition on the workpiece is triggered by an electric current flow in the suspension and the resulting water electrolysis. The ions thus generated on the workpiece surface cause a reversal of the neutralization reaction; the previously soluble paint binders coagulate and deposit on the workpiece.

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WIOTEC® Ense GmbH & Co. KG
Auf den Geeren 9-11
59469 Ense-Höingen, Germany

WIOTEC® Arnsberg GmbH & Co. KG
Wagenbergstraße 55
59759 Arnsberg, Germany

+49 2938 97833-0
+49 2938 97833-20

From metal to precious metal
The company WIOTEC® is your specialist for surface finishing and metalworking. In our electroplating shop, which is managed according to the latest environmental standards, we are capable of finishing both small parts and long parts of up to six meters. This makes us one of the leading and most efficient decorative surface coaters in Europe.

Our most important resource is our employees - with their commitment, competence and experience. Together with them, we work out and develop individual and tailor-made solutions for our customers. From detailed consultation and planning to purchasing, mechanical and chemical pre-treatment, professional electroplating and supplementary services - WIOTEC®'s range of services leaves nothing to be desired.



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+49 2938 97833-11

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