Cutting tool employing vapor-deposited polycrystalline diamond f

Details Cutting tool employing vapor-deposited polycrystalline diamond f Cutting tool employing vapor-deposited polycrystalline diamond f

1993-06-29

1995-07-25

Jones, Deborah

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51297, 51308, 51309, B24D 1100

Patent

active

054358159

ABSTRACT:
A diamond cutting tool has a tool substrate and a cutting edge member. The cutting edge member is formed of a material having a three-layer structure or a diamond composite material. When the material having a three-layer structure is employed, the cutting edge member is formed by a vapor-deposited diamond layer defining a rake face, a layer of a composite material of vapor-deposited diamond and a metal or ceramics, and a layer of the metal or ceramics. The metal is prepared from Mo, W, Cr, V, Nb, Ta, Co, Ni or Fe, while the ceramics is prepared from cBN, SiC, Si.sub.3 N.sub.4, WC, TiC, TaC, NbC, Cr.sub.3 C.sub.2, Mo.sub.2 C, VC, TiN or BN. The cutting edge member is brazed to the tool substrate through the metal or ceramics layer. When the diamond composite material is employed, on the other hand, the cutting edge member is formed of a composite material of particles or fibers of AlN, cBN or SiC and vapor-deposited diamond. The diamond cutting tool is excellent in heat resistance and durability.

REFERENCES:
patent: 3663191 (1972-05-01), Kroder
patent: 4250210 (1981-02-01), Crosby et al.
patent: 4842937 (1989-06-01), Meyer et al.

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