Collect. Czech. Chem. Commun. 1981, 46, 2949-2966

Mathematical simulation of the formation of small holes during electrochemical machining

Petr Nováka, Ivo Roušara, Arnošt Kimlab, Vladimír Mejtaa and Václav Ceznera

a Department of Inorganic Technology
b Department of Mathematics, Prague Institute of Chemical Technology, 166 28 Prague 6


For the purpose of studying the formation of small holes during electrochemical machining, a two-fold transformation of the interelectrode space to a rectangle was used (threedimensional system symmetrical around the axis of the hole) and a superrelaxation method for the calculation of the potentials in this region was proposed. The results for the case of primary current distribution are compared with those involving polarization of the electrodes, heating of the streaming electrolyte by the Joule heat, and the formation of the gas phase. It is shown that the primary current distribution represents a sufficient approximation of the situation during machining.