PROCEDURE FOR PRODUCING COMPOSITE MATERIAL ON BASE OF DIAMOND POWDER AND/OR CUBIC BORON NITRIDE Russian patent published in 2010 - IPC C22C1/05 B24D3/10 

FIELD: machine building.

SUBSTANCE: inventions can be implemented for cutting elements at production of parts of machines and instruments. Powders of diamond and/or cubic boron nitride of different firmness are put into a mould alternating layers of higher and lower firmness. Further there is performed stage-by stage compaction of powders upon placing each layer of powders of lower firmness at pressure Σ_firm.>P>Σ_l.firm., where P is pressure value at compaction, Σ_firm. - higher firmness of powders, Σ_l.firm. lower firmness of powders. Powders of higher firmness are taken for each layer at amount facilitating forming layer into one grain, while volume contents of powders of lower firmness for each layer is chosen from condition 0.8-1.0 of volume of space formed by compacted powders of higher firmness. Upon compaction powders are soaked with binding material.

EFFECT: procedure facilitates production of material of only two graininess with their high contents out of diamond and cubic nitride powders eliminating usage of micro-powders; it also facilitates production of material of big height with uniform distribution of powder grains in whole volume.

3 dwg