Cemented carbide insert and method of making same

Details Cemented carbide insert and method of making same Cemented carbide insert and method of making same

2007-09-04

2007-09-04

Turner, Archene (Department: 1775)

Stock material or miscellaneous articles

Composite

Of inorganic material

C051S307000, C427S249190, C428S615000, C428S548000, C428S627000, C428S636000, C428S457000, C428S689000, C428S697000, C428S698000, C428S704000

Reissue Patent

active

11449013

ABSTRACT:
The present invention relates to a coated cemented carbide cutting tool particularly for turning applications with high toughness demands, of stainless steels of different compositions and microstructures, and of low and medium alloyed non-stainless steels. The cemented carbide is WC-Co based with a composition of 9-12 wt % Co, 0.2-2.0 wt % cubic carbides from elements from group IVa, Va or VIa of the periodic table and balance WC with a grain size of 1.5-2 μm. The binder phase is W-alloyed with a CW-ratio in the range of 0.77-0.95. The coating includes a multilayered structure of the composition (TixAl1−x,)N in which x varies repeatedly between the two ranges 0.45<x<0.55 and 0.70<x<0.80, adding up to a total thickness of 2-9 μm.

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U.S. Appl. No. 09/077,424, Lindskog et al., filed Sep. 1998.
U.S. Appl. No. 09/534,006, Persson et al., filed Mar. 2000.

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