Patent ID: 11919091
Assignee: P & S GLOBAL HOLDINGS LLC
Field: Surface technology, coating (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A cutting tool insert, comprising:
a. a carbide substrate with a hardness range of 90 to 93 HRA comprising an average tungsten carbide grain size of 0.4 to 0.8 microns, a honing edge in the range of 10 and 35 microns, and a surface roughness of 0.05 to 1.5 micron;
b. at least one nanostructured layer, wherein a first at least one nanostructured layer is deposited over the substrate, and if applicable, followed by depositing a series of at least one nanostructured layers, one at a time, over a prior at least one nanostructured layer until application of a final at least one nanostructured layer resulting in a nanostructured coating, wherein each at least one nanostructured layer is selected from a group consisting of titanium, titanium carbonitride, titanium carbide, and titanium nitride;
c. a carbon enriched layer deposited over an outer surface of the final at least one nanostructured layer wherein the carbon enriched layer comprises a carbon enriched layer of titanium carbonitride;
d. a non-nanostructured layer deposited over the carbon enriched layer wherein the non-nanostructured layer comprises an aluminum oxide layer with a surface roughness ranging from 0.05 to 0.5 microns.