Coated cutting tool and a method for coating the cutting tool
AssigneeSeco Tools AB
InventorsMikael FALLQVIST, Jon ANDERSSON
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Abstract
A coated cutting tool includes a substrate with a coating having a total thickness of 0.25-30 μm. The coating has a first layer and a second layer, the first layer being a wear resistant PVD deposited layer having a thickness of 0.2-15 μm arranged between the substrate and the second layer, and wherein the second layer is a Cr layer.
Claims18
A coated cutting tool comprising a substrate with a coating having a total thickness of 0.25-30 μm, wherein the coating includes a first layer and a second layer, and wherein the first layer is a wear resistant PVD deposited layer having a thickness of 0.2-15 μm, the first layer being arranged between the substrate and the second layer, and wherein the second layer is a Cr layer, the Cr layer being an outermost layer of the coating.
A method for producing of a coated cutting tool comprising the steps of:
- applying a substrate of cemented carbide, cermet, ceramic, steel or cubic boron nitride with a hard and wear resistant coating having a thickness of 0.25-30 μm by means of PVD (physical vapor deposition) techniques, such as cathodic arc deposition, wherein the coating includes a first layer and a second layer, the second layer being a Cr layer arranged as an outermost layer of the coating;
- growing the Cr layer by using pure Cr cathodes applying an evaporation current between 50 A and 200 A, a gas atmosphere containing pure Ar at a total gas pressure between 1.0 Pa and 7.0 Pa, and applying a deposition temperature between room temperature and 500° C.
Dependencies are inferred from the claim text.