Patent · US Active

Coated cutting tool

US11628503B2 · kind B2 · utility

0Cited by

2References

14Claims

0Family size

Assignee

AB Sandvik Coromant · SE

Inventors

Jan Engqvist · Uppsala, SE
Erik Lindahl · Solna, SE

Key dates

Filing date	Jun 27, 2019
Grant date	Apr 18, 2023
Priority date	—
Expiry date	Jun 27, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23B2228/105
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A coated cutting tool having a substrate and a coating is provided. The coating includes an inner α-Al2O3-multilayer and an outer α-Al2O3-single-layer. The thickness of the inner α-Al2O3-multilayer is less than or equal to 35% of the sum of the thickness of the inner α-Al2O3-multilayer and the thickness of the outer α-Al2O3-single-layer. The sum of the thickness of the inner α-Al2O3-multilayer and the outer α-Al2O3-single-layer is 2-15 μm. The inner α-Al2O3-multilayer consists of alternating sublayers of α-Al2O3 and sublayers of TiCO, TiCNO, AlTiCO or AlTiCNO. The inner α-Al2O3-multilayer can include at least 5 sublayers of α-Al2O3.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.