Abstract

The purpose of this work was to optimize the process of obtaining a charge of lead-antimony alloy SSu3 by the electroerosion method in distilled water according to the criterion of average particle size.Methods. At the experimental facility for the production of lead-antimony powders from conductive materials, the waste of the SSu3 alloy was dispersed in distilled water at a loading weight of 250 g. The following electrical parameters of the installation were used: voltage at the electrodes from 100–200 V; capacitance of capacitors 25–65 UF; pulse repetition frequency 25–50 Hz. The average particle size was studied using the Analysette 22 NanoTec plus laser particle size analyzer. The determination of the optimal parameters of the EED installation was carried out by setting up a complete factorial experiment (PFE) on the average particle size of the obtained electroerosive materials. The parameters of the EED installation operation were selected as factors: the voltage at the electrodes, the capacitance of the discharge capacitors and the pulse repetition rate.Results. According to the conducted series of experiments, the results of which are presented in the table, the limiting values of the optimization parameter y (the average size of electroerosive particles) were determined, which amounted to: 44 microns with a capacity of 65.5 UF discharge capacitors, a voltage at the electrodes of 200 V, a pulse repetition frequency of 75 Hz.The conducted studies have shown that by the method of electroerosive dispersion of SSu3 alloy waste in distilled water, it is possible to obtain an alloy powder with a uniform distribution of alloying elements.Conclusion. Optimization of the process of obtaining the charge of lead-antimony alloy SSu3 by the electroerosion method in distilled water according to the criterion of the average particle size was carried out. The results obtained can be used by enterprises of the industrial sector for the production of lead-antimony powder.

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