Coated cutting tool
AssigneeAB Sandvik Coromant
InventorsLars Johnson, Marta Saraiva
Life of this patent
Estimating the term…
Abstract
A coated cutting tool includes a substrate and a coating, wherein the coating has a (Ti,Al)N multilayer of alternating cubic Ti1-xAlxN sub-layers, 0.60≤x≤0.75, and cubic+hexagonal Ti1-yAlyN sub-layers, 0.60≤y≤0.75. The average cubic Ti1-xAlxN sub-layer thickness is from 75 to 450 nm and the average cubic+hexagonal Ti1-yAlyN sub-layer thickness is from 50 to 300 nm. The number of each of the cubic Ti1-xAlxN sub-layers and cubic+hexagonal Ti1-yAlyN sub-layers is from 2 to 50.
Claims12
A coated cutting tool for metal machining comprising a substrate and a coating, wherein the coating includes a (Ti,Al) N multilayer of alternating cubic Ti1-xAlxN sub-layers, 0.60≤x≤0.75, and cubic+hexagonal Ti1-yAlyN sub-layers, 0.60≤y≤0.75, an average cubic Ti1-xAlxN sub-layer thickness being from 75 to 450 nm and an average cubic+hexagonal Ti1-yAlyN sub-layer thickness being from 70 to 300 nm, a number each of cubic Ti1-xAlxN sub-layers and cubic+hexagonal Ti1-yAlyN sub-layers being from 2 to 50.
Dependencies are inferred from the claim text.