The Influence of Electric Discharge Energy and Conditions of its Flow on the Geometrical Parameters of a Single Well and Microhardness of its Surface Layer

The paper is devoted to an experimental study of the effect of an electric discharge energy and the conditions of its flow (in air and using distilled water) on the geometrical parameters of a single well obtained on a sample of U8A steel, as well as the microhardness of its surface layer. The questions of the technique for carrying out experimental studies are described, including a description of the device for obtaining single holes on the surface of a steel sample, as well as the means and methods for measuring their geometric parameters and microhardness of the surface layer. The results of studies that made it possible to quantify the effect of the energy of an electric discharge and its flow conditions on changes in the geometric parameters of a single well and the microhardness of its surface layer are presented and analyzed. It is established that with increasing energy of an electric discharge, the dimensions of geometrical parameters of a single well increase, and simultaneously the microhardness of its surface layer increases. In this case, in comparison with treatment in air, the use of distilled water leads to a decrease in both the geometric dimensions of the well and the microhardness of its surface layer.