Coated cutting tool
AssigneeMOLDINO Tool Engineering, Ltd.
InventorTomoya Sasaki
Life of this patent
Estimating the term…
Abstract
Provided is a coated cutting tool in which a surface of a substrate is coated with a hard coating film. The hard coating film includes: a layer (A) disposed on the surface of the substrate, and having a face-centered cubic lattice structure, in which the total content ratio of W and Ti is at least 85 atomic %, and which contains W as the most abundant element and Ti as the next most abundant element among metal (including metalloid) elements; and a layer (B) disposed on the layer (A) and having a face-centered cubic lattice structure, which is composed of nitrides or carbonitrides containing Al, Cr, and Si, and in which, among metal (including metalloid) elements, the Al content ratio is at least 50 atomic %, the total content ratio of Al and Cr is at least 85 atomic %, and the Si content ratio is 4 to 15 atomic %.
Claims12
A coated cutting tool in which a surface of a substrate is coated with a hard coating film, the hard coating film comprising:
- a layer (A) that is disposed on the surface of the substrate and has a face-centered cubic lattice structure, in which a total content ratio of W and Ti is at least 85 atomic %, and which contains W as the most abundant element and Ti as the next most abundant element among metal elements including metalloid elements;
- and a layer (B) that is disposed on the layer (A) and has a face-centered cubic lattice structure, which is composed of nitrides or carbonitrides containing Al, Cr, and Si, and in which, among metal elements including metalloid elements, the Al content ratio is at least 50 atomic %, a total content ratio of Al and Cr is at least 85 atomic %, and the Si content ratio is at least 4 atomic % and at most 15 atomic %.
Dependencies are inferred from the claim text.