Abstract
The technology of obtaining and treating steel for agricultural machinery consists in smelting steel of the specified composition, modifying the steel with titanium carbide nanopowder in an amount of 0.06-0.08% with dispersion of 80-100 nm and subsequent heat treatment consisting of the following stages: annealing at 640 ºС, quenching in oil at 920-930 ºС and tempering in water at 500-550 ºС.As a result of using the developed technology, the properties of parts increase: hardness by 12-14%; tensile strength by 13-15%; wear resistance by 15-18%.The grain class and segregation decrease, the properties of carbon steels approach in hardness and wear resistance to those of heat treated steels with carbide hardening.It has been experimentally proven that the treatment of alloyed steel with titanium carbide nanopowder significantly changes the nature of the interstitial phase (carbides): the average size of carbide inclusions decreases by 36%, the shape factor (the tendency to form a spherical shape) increases by 34%, which favorably affects the properties.