METHOD FOR APPLICATION OF WEAR-RESISTANT COATINGS BASED ON TITANIUM CARBIDE, NICKEL AND MOLYBDENUM ON DIE STEELS

摘要

FIELD: technological processes.;SUBSTANCE: invention relates to the formation on the steel surfaces of coatings based on titanium, nickel and molybdenum carbide, which can be used in stamping and other industries. Method includes an electric explosion of a composite electrically exploding conductor consisting of a two-layer flat molybdenum shell with a mass of 60–530 mg and the core in the form of a mixture of titanium carbide powders with a mass equal to 0.5–2.0 times the mass of the shell and nickel with a mass equal to 0.5–2.0 times the mass of the shell, formation from the explosion products of a pulsed multiphase plasma jet, its fusion with the surface of the die steel at an absorbed power density of 4.6–4.8 GW/m², deposition of explosion products onto the surface with formation of a composite coating of the TiC-Ni-Mo system and the subsequent pulse-periodic electron-beam treatment of the coating surface at an absorbed energy density of 40–60 J/cm², the pulse duration is 150–200 microseconds and the number of pulses is 10–30.;EFFECT: invention is directed to the production of wear-resistant coatings with high adhesion to the substrate at the level of cohesion.;1 cl, 2 ex, 2 dwg