Kennametal Inc.

Frank Barry Battaglia

Pankaj K Mehrotra

Aharon Inspektor

Edward J Oles

John J Prizzi

Chuck E Lipniskis

Vincent J Cackowski

Mark A Garman

Peter Rudolf Leicht

Kent Lewis Reiner

Charles Graham McNerny

Crystal Jane Nestor

CVD coated cutting tools are provided. A coated cutting tool described herein, in some embodiments, comprises a PcBN substrate and a polished coating adhered to the substrate including one or more layers of AlOdeposited by chemical vapor deposition, wherein the coating has a surface roughness (R) less than about 600 nm in an area of the cutting tool for contacting a workpiece.

CVD coated polycrystalline c-BN cutting tools

A process for making a heat treated ground ceramic cutting tool and the resultant cutting tool. The process includes the steps of: providing an uncoated ground ceramic cutting tool having at least a portion thereof ground; and heat treating the uncoated ground ceramic cutting tool so as to form the heat treated ground ceramic cutting tool.

Process for heat treating ceramics

A process for making a heat treated ground ceramic cutting tool and the resultant cutting tool. The process comprising the steps of: providing an uncoated ground ceramic cutting tool having at least a portion thereof ground; and heat treating the uncoated ground ceramic cutting tool so as to form the heat treated ground ceramic cutting tool.

Process for heat treating ceramics and articles of manufacture made thereby

A coated cutting tool, and a method of producing the same, comprising a substrate which has a roughened surface that presents a surface roughness of between 15 microinches R.sub.a and 125 microinches R.sub.a. A coating is applied to the roughened surface of the substrate by physical vapor deposition. A coated cutting tool having a low cobalt substrate and experiencing long tool life is also discussed.

Cutting tool and method of making the cutting tool

A method of producing a cutting tool, comprising a substrate which has a roughened surface that presents a surface roughness of between 15 microinches R.sub.a and 125 microinches R.sub.a. A coating is applied to the roughened surface of the substrate by physical vapor deposition. A coated cutting tool having a low cobalt substrate and experiencing long tool life is also discussed.

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Latrobe, PA, United States of America

Frank Barry Battaglia