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US 6,632,514 B1Granted
Coated cutting insert for milling and turning applications
AssigneeSeco Tools AB
InventorsAnette Sulin, Rolf Olofsson, Sakari Ruppi, Jan Qvick
Life of this patent
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Abstract
A cutting tool insert particularly useful for wet and dry milling of low and medium alloyed steels and stainless steels includes a cemented carbide body with a coating consisting of an MTCVD Ti(C,N) layer and a multi-layer coating being composed of κ-Al2O3 and TiN or Ti(C,N) layers.
Claims17
A cutting tool insert comprising a cemented carbide body and a coating, said coating includes a multi-layer coating with a total thickness varying from 2 μm to 20 μm, said coating being composed of κ-Al2O3 layers with a thickness of 0.1-0.4 μm, and TiN or Ti(C,N) layers with a thickness of 0.3 to 0.6 μm;
- and that said cemented carbide body comprising WC with a mean intercept length of 0.5-0.9 μm, 9.0-10.9 wt-% Co and 0.5-2.5 wt-% TaC+NbC with a ratio of the weight concentrations of Ta and Nb of 7.0-12.0, and a binder phase with an S-value of 0.81-0.92.
Dependencies are inferred from the claim text.