Insert for milling of cast iron

Details Insert for milling of cast iron Insert for milling of cast iron

2008-09-10

2011-12-27

Turner, Archene (Department: 1784)

Stock material or miscellaneous articles

Composite

Of inorganic material

C051S307000, C051S309000, C428S216000, C428S336000, C428S698000, C428S699000

Reexamination Certificate

active

08084148

ABSTRACT:
Coated cemented carbide inserts, particularly useful for milling of cast iron, methods for making the inserts, and methods of their use are disclosed. The inserts are characterized by a composition of the substrate of about 5-7 wt % Co, about 0.05-2.0 wt % total amount of the metals selected from the group consisting of Ti, Nb,Ta and combination thereof, and balance WC with a coercivity (Hc) of 1 about 4-19 kA/m and an S-value of about 0.81-0.96. The coating comprises a homogeneous layer of (TixAl1-x)N, where x is between about 0.25 and about 0.50 with a crystal structure of NaCl type and a total thickness of between about 1.0 and about 5.0 μm as measured on the middle of the flank face.

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Supplementary EP Search Report dated Jul. 29, 2010 from EP08830773.

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