Institute for Materials Science Problems n. I.N.Frantsevich NAN of the UkraineDiamond -hardalloy macrocomposit high-modulus material brand AVKM

Diamond crown bit ø76 mm with the “kickers” from the material AVKM
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Party of the crown bits ø76 mm, obtained by the vacuum impregnation and equipped with material AVKM
Driving of crowns with the “kickers” from the material AVKM

CUTTERS, EQUIPPED WITH SUPERHARD MATERIAL “EL'BOR- R”
National Academy of the Sciences of the Ukraine
Institute for Problems of Materials Science n. I.N.Frantsevich NAN of the Ukraine
Tool is prepared with soldering into the steel or hard-alloy holders (shanks) of the cutting elements from the superhard material - cubic nitride of boron of brand “El'bor- R”. Steel brackets after soldering of the cutting elements are subjected to hardening.
Technology provides for vacuum brazing of billets of cubic nitride of boron (diameter - 4-6 mm, height - 5-8 mm) with the aid of the special wetting solders, which ensure the extra-adhesive and chemical fastening of cutting element
The designation of tool
Cutters (passage, boring, threaded, special, cutter inserts) are intended for the thin high-speed and finish turning, boring of openings in the components made of hardened steels (HRC 45-60), and also high-strength and chilled cast iron. Small cutters are intended for the boring of openings ∅5-15 mm. The regimes of cutting are given in the table.
Regimes of cutting