Coated cutting tool insert

Details Coated cutting tool insert Coated cutting tool insert

2005-05-10

2005-05-10

Turner, Archene (Department: 1775)

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

C051S307000, C051S309000, C427S419100, C427S419200, C427S419700, C428S336000, C428S472000, C428S697000, C428S698000, C428S699000, C428S701000, C428S702000

Reexamination Certificate

active

06890632

ABSTRACT:
Coated cemented carbide inserts (cutting tool), particularly useful for milling at high cutting speeds in steels and milling in hardened steels are characterised by a WC—Co cemented carbide containing NbC and TaC and a W-alloyed binder phase and a coating including a first, innermost layer of TiCxNyOzwith equiaxed grains, a second layer of TiCxNyOzwith columnar grains and at least one layer of Al2O3composed primarily of the κ-phase.

REFERENCES:
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patent: 1 103 635 (2001-05-01), None
patent: 0116389 (2001-03-01), None
U.S. Appl. No. 10/389,737, filed Mar. 18, 2003, Sulin et al.
U.S. Appl. No. 10/392,870, filed Mar. 21, 2003, Ruppi et al.

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