Brazable layer for indexable cutting insert

Details Brazable layer for indexable cutting insert Brazable layer for indexable cutting insert

1981-12-16

1984-07-17

Derrington, James H.

Abrasive tool making process, material, or composition

With inorganic material

51295, 51309, B24D 306

Patent

active

044603827

ABSTRACT:
A composite wafer bonded to a carbide substrate is formed by preparing a dispersion of super-hard crystals and carbon black in a temporary binder such as paraffin, by preparing a base mixture of carbon fiber, carbon black and filler in the temporary binder, and by preparing an additional mixture of cobalt and carbon black in the temporary binder. The dispersion, base mixture and additional mixture are compacted to form an intermediate composite, the additional mixture forming a layer on one surface of the base mixture. The intermediate composite is heated to allow for the removal of the temporary binder and the infiltration of liquefied silicon into the composite which is then reaction sintered to form the composite wafer.

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