Silicon carbide cutting insert with pre-pressed core center piec

Details Silicon carbide cutting insert with pre-pressed core center piec Silicon carbide cutting insert with pre-pressed core center piec

1981-12-16

1985-02-05

Derrington, James

Abrasive tool making process, material, or composition

With inorganic material

51298, 264 60, C04B 3116

Patent

active

044976399

ABSTRACT:
A silicon carbide cutting insert is prepared using a pre-pressed core dispersion of carbon fiber, carbon black, and filler in a temporary binder such as paraffin. The pre-pressed core dispersion is enveloped with a dispersion of super-hard crystals and carbon black in the temporary binder and compacted with the pre-pressed core to form an intermediate composite which is subsequently heated to allow for the removal of the temporary binder and the infiltration of liquefied silicon. The composite is then sintered to form a matrix of silicon and silicon carbide throughout the cutting insert.

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European Patent Application, 010,257, Sep. 1980.
European Patent Application, 012,966, Jul. 1980.

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