Thermal properties of the workpiece material and the machinability by electroerosion

Résumé

The machinability is the technological property of the workpiece material to be machined in more convenient conditions for the manufacturer. In the case of the electroerosion, one of the machinability tests takes into consideration the quantity of the workpiece material removed by a single electrical discharge. Some thermal properties of the workpiece material can influence the machinability of the proof sample material by electroerosion: the specific heat, the melting temperature of the metallic material, the thermal conductivity etc. The paper presents some authors theoretical considerations concerning the influence of the thermal properties of the proof sample material on the quantity of material removed by a single electrical discharge.