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WIOPEDIA - The WIOTEC® electroplating encyclopaedia

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Pickling is used to remove predominantly oxide coatings, such as rust, from metal surfaces. In this way, a pure, bright surface can be produced. This is done with the use of chemical
This is done with the use of chemical substances (acids); less frequently, the process is carried out with alkalis or molten salts. Pickling by electric current is also possible.

Burning: Pickling of copper and its alloys in a mixture of sulphuric and nitric acid.
Electrolytic pickling, which is also common, can be carried out either anodically, cathodically or with alternating current. It is absolutely necessary to degrease the metal surface before the actual pickling process, otherwise the acids used, which are mainly used as pickling agents, cannot penetrate the metal. If steel is pickled in non-oxidising acids, the hydrogen formed as a result of partial metal dissolution can enter the metal and lead to pickling brittleness.

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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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