Method of and device for the spark erosion of hardmetal objects.

摘要

A method and a device are described by means of which corrosion of a hardmetal object which is machined by spark erosion in an aqueous solution can be precluded. To this end, the hardmetal object is cathodically protected by a protective electrode during the spark-erosion process, which protective electrode is electrically connected to the hardmetal object via an external power source. The protective electrode is preferably plate-shaped. <IMAGE>