Gte Products Corporation

Osram Sylvania Inc.

Phillip D Wurzler

Ricky D Morgan

Walter J Zatkos, Jr

Dennis P Buttleman

Richard G Burke

Kenneth D Brown

Bernard J McKernan

A method and apparatus has been developed for the work hardening of tungsten alloy rods while achieving a high degree of diametrical control. The method employs multiple extrusions through extrusion dies designed to prevent cracking and delamination of the rods.

Extrusion die for tungsten alloys

A cutting tool for simultaneously forming a plurality of deep, narrow, closely spaced parallel grooves in a hard, brittle substrate material comprises a rigid housing which defines a plurality of closely spaced cutting blade cavities, each of said cavities being constructed to receive and rigidly hold a cutting blade therein, and cutting blades rigidly mounted in each of said cavities.

Cutting tool for turning parallel grooves

Cutting tool having a plurality of cutting blades

A method is disclosed for shaping parts made of tungsten and of tungsten with thoria. The method involves machining the parts with a machining apparatus wherein the machining tool is made of diamond or material of which tungsten carbide is the main phase, the material having a hardness of greater than about 91 Rockwell A, the machining being done at a speed of from about 40 to about 120 surface feed per minute, and a feed rate of from about 0.0002 to about 0.006 inches per revolution. Machining of parts made of tungsten is done with cooling with a halocarbon solvent. Machining of parts made of tungsten and thoria can be done with or without cooling.

Method for machining parts made of tungsten and of tungsten with thoria

Growing community of inventors

Laceyville, PA, United States of America

Phillip D Wurzler