Аннотация
It is shown that the appearance of characteristic types of wear on the separate zones on working surfaces of dies for hot drop forging is determined by real pressure values, boundary layer temperatures, deformed metal flow speed distribution on the due engraving surfaces and real values of local metal properties of forge stock and die in real condi- tions of forging. The zones for wear resistant coating as well as electrode material type and conditions of electroerrosion alloying were selected considering the peculiarities of deformed metal and die surfaces interactions. The uniform and less intensive wear was provided on the all working surfaces of die. Under industrial conditions the service life of die for forging of forged pieces of complicated form has been increased by 2–4 times.