Cutting insert for interrupted heavy machining

Details Cutting insert for interrupted heavy machining Cutting insert for interrupted heavy machining

1981-12-16

1987-10-06

Derrington, James

Abrasive tool making process, material, or composition

With inorganic material

51309, C04B 3556

Patent

active

046980709

ABSTRACT:
A cutting insert is provided with at least one crystal portion containing a first concentration of super-hard crystals, such as diamond or cubic boron nitride crystals, and core portion. The crystal portion and the core portion are united by amatrix of .beta.-silicon carbide and silicon and exclusively form a composite having an approximate thickness of at least 1/8 inch, thus obviating the need for bonding the cutting insert onto a carbide substrate. Additional crystal layers, having a concentration of crystals less than that of the first crystal layer, may be provided, the crystal and core layers being configured in a number of different configurations in order to optimize particular machining requirements.

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