Cutting tools having microstructured and nanostructured refractory surfaces
AssigneeKennametal Inc.
InventorsNaveen Kondameedi, Fabian Rosenberger, Christoph Gey
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Abstract
In one aspect, cutting tools are provided comprising radiation ablation regions defining at least one of refractory surface microstructures and/or nanostructures. For example, a cutting tool described herein comprises at least one cutting edge formed by intersection of a flank face and a rake face, the flank face formed of a refractory material comprising radiation ablation regions defining at least one of surface microstructures and surface nanostructures, wherein surface pore structure of the refractory material is not occluded by the surface microstructures and surface nanostructures.
Claims11
A method of making a cutting tool comprising:
- providing a cutting insert comprising a rake face and body formed of a refractory material;
- and
- cutting through the rake face and body with a laser beam to provide a flank face forming a cutting edge with the rake face, the flank face comprising radiation ablation regions defining at least one of surface microstructures and surface nanostructures, wherein
- pore structure of the refractory material is not occluded by the surface microstructures and surface nanostructures, and wherein
- the laser beam is rotated during cutting.
A method of making a cutting tool comprising:
- providing a cutting insert comprising a rake face and body formed of a refractory material;
- and
- cutting through the rake face and body with a laser beam to provide a flank face forming a cutting edge with the rake face, the flank face comprising radiation ablation regions defining at least one of surface microstructures and surface nanostructures, wherein
- pore structure of the refractory material is not occluded by the surface microstructures and surface nanostructures, and wherein
- the surface microstructures and surface nanostructures have substantially uniform spacing within an ablation region.
A method of making a cutting tool comprising:
- providing a cutting insert comprising a rake face and body formed of a refractory material;
- and
- cutting through the rake face and body with a laser beam to provide a flank face forming a cutting edge with the rake face, the flank face comprising radiation ablation regions defining at least one of surface microstructures and surface nanostructures, wherein
- pore structure of the refractory material is not occluded by the surface microstructures and surface nanostructures, and wherein
- the rake face is free of one or more radiation ablation regions at a distance of at least 1 μm from the cutting edge.
A method of making a cutting tool comprising:
- providing a cutting insert comprising a rake face and body formed of a refractory material;
- and
- cutting through the rake face and body with a laser beam to provide a flank face forming a cutting edge with the rake face, the flank face comprising radiation ablation regions defining at least one of surface microstructures and surface nanostructures, wherein
- pore structure of the refractory material is not occluded by the surface microstructures and surface nanostructures, wherein the refractory material is graphite.
A method of making a cutting tool comprising:
- providing a cutting insert comprising a rake face and body formed of a refractory material;
- and
- cutting through the rake face and body with a laser beam to provide a flank face forming a cutting edge with the rake face, the flank face comprising radiation ablation regions defining at least one of surface microstructures and surface nanostructures, wherein the refractory material comprises a sp3 hybridized fraction and a sp2 hybridized fraction.
Dependencies are inferred from the claim text.