Abstract
Results of research on increase of reliability of units, by improvement of physicomechanical proper- ties of working surfaces of interfaces by electrospark processing in the gas environment, a compact electrode are submitted. Properties of coverings of the details formed on surfaces from aluminium, copper and alloyed steels are investigated. It is shown, that optimization of process of electrospark processing creates steams of friction pairs friction with high weared out the properties essentially raising reliability of the unit.