Criterion for Evaluating the Electrical Erosion Resistance of Materials

The article describes a method for obtaining a criterion for the electrical erosion resistance of materials used for the manufacture of electrodes for electric erosion machining. The assessment of the electrical erosion resistance of materials according to the Palatnik criterion was found to be inaccurate. It is shown that the electrical erosion resistance is inversely related to the material density and that the material thermal conductivity and not its melting temperature exerts the greatest effect on it. Further research will be aimed at obtaining a universal high-precision mathematical model of the criterion for the material electrical erosion resistance according to its thermophysical characteristics.

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