Coated cutting tool for general turning in heat resistant...

Details Coated cutting tool for general turning in heat resistant... Coated cutting tool for general turning in heat resistant...

2008-08-21

2011-10-11

Turner, Archene (Department: 1784)

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

C051S307000, C051S309000, C428S336000, C428S697000, C428S698000, C428S699000

Reexamination Certificate

active

08034438

ABSTRACT:
The present invention relates to coated cemented carbide inserts, particularly useful in general turning of superalloys. The inserts are characterized by a cemented carbide of WC, about 5.0-7.0 wt-% Co, and about 0.22-0.43 wt-% Cr, where the substrate has a coercivity (Hc) of about 19-28 kA/m. The coating contains a single (TixAl1-x)N-layer, where x is about 0.25-0.50, with crystal structure of NaCl type, total thickness of about 3.0-5.0 μm, (200)-texture, and compressive residual strain of about 2.5×10−3-5.0×10−3, optionally containing an outermost TiN-layer.

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