COATED CUTTING TOOL

COATED CUTTING TOOL

The present invention relates to a coated cutting tool including a substrate and a coating. The coating has an inner α-Al2O3-multilayer and an outer α-Al2O3-single-layer. The thickness of the inner α-Al2O3-multilayer is 50% to 80% of the sum of the thickness of the inner α-Al2O3-multilayer and the t...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: SACRISTAN PEREZ, Irantzu, ENGQVIST, Jan
Format: Patent
Sprache:eng
Schlagworte:
BORING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
TRANSPORTING
TURNING
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Beschreibung
Zusammenfassung:The present invention relates to a coated cutting tool including a substrate and a coating. The coating has an inner α-Al2O3-multilayer and an outer α-Al2O3-single-layer. The thickness of the inner α-Al2O3-multilayer is 50% to 80% 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 α-Al2O3-multilayer has alternating sublayers of α-Al2O3 and sublayers of TiCO, TiCNO, AlTiCO or AlTiCNO, the α-Al2O3-multilayer having at least 8 sublayers of α-Al2O3.