CVD coated cutting tool insert

Details CVD coated cutting tool insert CVD coated cutting tool insert

2006-12-19

2006-12-19

Turner, Archene (Department: 1775)

Abrasive tool making process, material, or composition

With inorganic material

Metal or metal oxide

C051S307000, C428S216000, C428S336000, C428S325000, C428S698000, C428S701000

Reexamination Certificate

active

07150772

ABSTRACT:
The present invention relates to a coated cemented carbide insert (cutting tool), particularly useful for milling of stainless steels and super alloys but also milling of steels in toughness demanding applications. The cutting tool insert is characterised by a cemented carbide body comprising WC, NbC and TaC, a W-alloyed Co binder phase, and a coating comprising an innermost layer of TiCxNyOzwith equiaxed grains, a layer of TiCxNyOzwith columnar grains and a layer of α-Al2O3.

REFERENCES:
patent: 6062776 (2000-05-01), Sandman et al.
patent: 6177178 (2001-01-01), Ostlund et al.
patent: 6221479 (2001-04-01), Waldenstrom et al.
patent: 6250855 (2001-06-01), Persson et al.
patent: 6251508 (2001-06-01), Ruppi
patent: 6632514 (2003-10-01), Sulin et al.
patent: 6733874 (2004-05-01), Ueda et al.

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