Credo Tool Company

Carl Shumaker

R K Viswanadham

David T Brutscher

Donald C Pennington, Jr

Zane D Lockhart, Jr

Ramamurthy K Viswanadham

Oscar H Miller

A cutting tool insert includes a cutting tip mounted into a first recess of an injection molded hard refractory compound insert having a second recess of preselected size and shape for locating the insert to a cutting tool. A preferred cutting tip is a diamond and a preferred hard refractory compound is a tungsten carbide with a cobalt binder.

Injection molded carbide cutting insert

A cutting tool insert includes a cutting tip mounted into a first recess of a molded hard refractory compound insert having a second recess of preselected size and shape for locating the insert to a cutting tool. A preferred cutting tip is a diamond and a preferred hard refractory compound is a tungsten carbide with a cobalt binder.

Carbide cutting insert

Method of making a carbide cutting insert

A carbide substrate including a binder prepared to receive a cutting material such as a diamond coating thereon. The substrate is immersed in an electrolyte solution with the substrate acting as the anode thereby providing for an electro-polished substrate surface. The electro-polished substrate surface is then etched to substantially remove the binder phase of the carbide substrate, the etching being to a depth of up to about 15 microns. The resulting surface is susceptible for receiving a coating of the diamond cutting material.

Method of making cemented carbide substrate

Growing community of inventors

Louisville, KY, United States of America

Carl Shumaker