Coated drill and method of making the same

The present invention relates to a drill comprising a cemented carbide or high speed steel substrate and a coating wherein the coating comprises: a first layer system having a multilayered structure covering substantially the whole active part of the drill, a second layer system having a multilayere...

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Hauptverfasser:	SCHNEIDER THOMAS, STRAND MARIA, MUELLER PETER, HEIL THOMAS
Format:	Patent
Sprache:	eng
Schlagworte:	BORING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS TRANSPORTING TURNING
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creator	SCHNEIDER THOMAS STRAND MARIA MUELLER PETER HEIL THOMAS
description	The present invention relates to a drill comprising a cemented carbide or high speed steel substrate and a coating wherein the coating comprises: a first layer system having a multilayered structure covering substantially the whole active part of the drill, a second layer system having a multilayered structure covering only the tip area of the drill. Drills according to the present invention have good wear resistance and improved properties when reconditioning the drill. The present invention also relates to a method of making a drill according to the present invention.
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subjects	BORING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS TRANSPORTING TURNING
title	Coated drill and method of making the same
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