STRENGTHENING METHOD OF SURFACE OF HARD-ALLOY TOOL ON BASIS OF TUNGSTEN CARBIDE Russian patent published in 2011 - IPC C23C14/48 C23C14/32 B23B27/14 

FIELD: metallurgy.

SUBSTANCE: method consists in heating and alloying of surface alloys by their being saturated with explosion products of conductors, with further self-hardening owing to removal of heat deep into the material and environment. Thin titanium foil is used as conductor. At the same time, there performed is alloying of surface of hard alloy with powders of chemical substances and compound (for example diamond powder, boron, silicon carbide, etc.). During implementation of the method, melting of surface layers, replacement of the type of tungsten monocarbide WC in hard alloy with another type W₂C with higher hardness, as well as the reduction of value of tungsten carbide W₂C in surface layer is performed.

EFFECT: increasing operating resistance of hard alloy.

4 cl, 2 ex