METHOD OF PRODUCTION OF THE COMPOSITE MATERIALS BASED ON THE ULTRA-HARD PARTICLES FOR MANUFACTURE OF THE CUTTING TOOLS Russian patent published in 2007 - IPC C04B35/528 C04B35/5831 

FIELD: tool-and-die industry; methods of production of the composite materials on the basis of the ultra-hard particles for manufacture of the cutting tools.

SUBSTANCE: the invention is pertaining to the field of the tool-and-die industry, in particular, to production of the composite materials for the cutting tools on the basis of the ultra-hard particles with their volumetric contents in the material of 75÷ 92 %. For production of the composite materials the method provides for preparation of the charge, which consists of the binding agent and the ultra-hard particles, at least, of two sizes, from which as one size the ultra-hard particles use the diamond, and as the ultra-hard particles of the other size use the cubic boron nitride of 8÷40 microns. At that they take diamond particles with the size equal to (5.1-8) sizes of the cubic boron nitride. The charge is subjected to the thermal pressing at the temperature of the binding agent melting. Besides, the charge is additionally introduced with the diamond particles of the size equal (4-6) sizes of the main diamond grains. At that the main diamonds grains are taken with the size of 81-320 microns. The method allows manufacture the composite material with the wide range of the operational characteristics.

EFFECT: the invention ensures production of the composite material with the wide range of the operational characteristics.

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