Aeg-elotherm G.m.b.h.

Cohausz & Florack

Paul G Pott

Bernd Wolter

Peter Gosger

Wilhelm Gotzelmann

The invention comprises a process for regenerating and detoxifying electrolytes which contain sodium nitrate for use in electrochemical treatment of metallic workpieces. The reaction products, like ammonia, formed in the treatment which interfere with the operating process and in some instances are toxic shall be removed as harmless substances. The process according to the invention is characterized by

Process for regenerating and detoxifying electrolytes used in the

The invention relates to a process and an apparatus for the electrochemical etching of grooves of very small width, in particular smaller than 1.0 mm, into a workpiece. Etching is performed with a wire electrode or a rod electrode extending across the etching direction. In order that the electrolyte liquid introduced into the work gap does not flow away uncontrolled, but fills out the work gap over the entire working length of the electrode, a baffle acting behind the rear of the electrode is provided. This ensures that the flow of the electrolyte takes place essentially in the work gap and in the longitudinal direction.

Apparatus for the electrochemical etching of grooves of very small width

A machine for simultaneously electrochemical processing a plurality of workpieces in which a workpiece receiver is mounted on spring loaded rails between a clamping unit and a base for horizontal movement between loading and operating positions. A working electrode extends through a bore in the clamping unit to create a working gap with a workpiece which is electrically connected via a spring loaded contact member to a source of eroding current. The clamping unit can be moved up and down to make and break electrical contact and to clamp and release the workpieces. Electrolyte is supplied to and removed from the working gap.

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Wermelskirchen, Germany

Paul G Pott