Tap drill with enhanced performance
AssigneeOerlikon Surface Solutions AG, PfäFfikon
InventorDenis KURAPOV
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Abstract
The present invention relates to a tap drill comprising a substrate and a coating, wherein the coating is deposited on at least a portion of the substrate comprising the head of the drill, the coating comprising a first layer deposited directly on the substrate and a second layer deposited atop the first layer, wherein the first layer is a wear resistant layer of (Al,Cr)N deposited by Hi PIMS and the second layer is a friction reduction layer, wherein the second layer is a metal carbide layer or a metal-carbide comprising layer deposited by using a physical vapor deposition (PVD) process of the type magnetron sputtering, preferably of the type HiPIMS.
Claims10
A tap drill comprising:
- a substrate and a coating, wherein the coating is deposited on at least a portion of the substrate comprising a head of the drill, the coating comprising a first layer deposited directly on the substrate and a second layer deposited atop the first layer, wherein the first layer is a wear resistant layer of (Al,Cr)N deposited by HiPIMS and the second layer is a friction reduction layer, wherein the second layer is a metal carbide layer or a metal-carbide comprising layer deposited by using a physical vapor deposition (PVD) process of the type magnetron sputtering.
A method for producing a tap drill comprising a substrate and a coating, the method comprising:
- depositing the coating on at least a portion of the substrate comprising a head of the drill, the coating comprising a first layer and a second layer;
- using a HiPIMS process to deposit the first layer directly on the substrate;
- and
- using a HiPIMS process to deposit the second layer atop the first layer;
- wherein the first layer is a wear resistant layer of (AlCr)N, and
- wherein the second layer is a friction reduction layer, the second layer is a metal carbide layer or a metal-carbide comprising layer.
Dependencies are inferred from the claim text.