SOLID PHASE PARTICLES DISPERSION IN IMPREGNATING MATERIAL Russian patent published in 2017 - IPC B22F3/26 C22C29/02 E21B10/36 C22C1/04 

FIELD: mining.

SUBSTANCE: group of inventions relates to composite material for earth drilling bit. Method of composite material making involves mixing first component solid phase in form of carbide with binding agent, second component solid phase in form of porous carbide, having porosity of at least 1 % and containing from 0.1 wt% to 50 wt% of binder and methyl cellulose with production of mixture, loading of said mixture into mold, addition of metal carbide powder into said mold, addition of impregnating alloy into said mold, overheating of said impregnating alloy with provision of said solid phase second component decomposition in said impregnating alloy with production of first component solid phase dispersion and dissolved second component solid phase in said impregnating alloy and cooling of said dispersion with production of composite material. Earth drilling bit includes housing made from composite material.

EFFECT: enabling higher resistance of composite material to erosion.

26 cl, 10 dwg, 2 ex