FIELD: metallurgy.
SUBSTANCE: solid particle and assemblage of particles with matrix material are ground. Produced powder particles are separated into several grain size fractions to mix, at least, a portion of smaller fraction with at least one additive selected from the group including binder, plasticiser, lubing additive and compacting additive to obtain a powder mix. Powder mix is placed in deformable container to apply pressure to, at least, its one outer surface to form green body of the bit. Fluid containing, at least, one additive is discharged from said deformable container. Bit green body is partially sintered. Proposed device comprises pressure chamber, deformable container places in said chamber, at least one pipeline to allows passage of fluid between inner space of container and pressure chamber outer space.
EFFECT: higher drilling properties, longer life.
20 cl, 6 dwg
