Surface coated cutting tool
AssigneeKYOCERA Corporation
InventorsTakahito Tanibuchi, Hirotoshi Itoh
Life of this patent
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Abstract
A surface coated cutting tool comprises a substrate and a hard layer formed on the surface of the substrate, and a contact angle of water θ on the rake face of the hard layer is in the range of 30 to 80°. A surface coated cutting tool comprises a substrate and a hard layer formed on the surface of the substrate, and a contact angle of water θR on the rake face of the hard layer and a contact angle of water θF on the flank face of the hard layer have a relation of θR<θF. Thereby, excellent resistance to wear and fracture can be shown, leading to a excellent surface coated cutting tool.
Claims16
A surface coated cutting tool, comprising a substrate having a structure where a cutting edge is formed on the cross-ridge portion of a rake face and a flank face and a hard coated layer formed on the surface of the substrate,
- wherein a contact angle of water θ on the rake face of the hard layer is in the range of 30 to 80°.
A surface coated cutting tool, comprising a substrate having a structure where a cutting edge is formed on the cross-ridge portion of a rake face and a flank face and a hard layer formed on the surface of the substrate,
- wherein a contact angle of water θR on the rake face of the hard layer and a contact angle of water θF on the flank face of the hard layer have a relation of θR<θF.
Dependencies are inferred from the claim text.