Verfahren und Vorrichtung zum Funkenerodieren

Process for performing spark erosion on workpieces, in which a sampling voltage is applied to the electrodes forming the working gap at the start of each discharge cycle comprising a pause and an erosion high-current discharge, and the tripping of an erosion high-current discharge is started after an electrical sample discharge occurring as a result of the sampling voltage as a factor of the sampling discharge current. In order to perform erosion quickly with low power consumption, the process is performed in such a way way that the sampling voltage is continuously increased until a sampling discharge occurs and, the immediate tripping of the erosion high-current discharge is started when there is a sufficiently large change in the sampling discharge current in the time unit.