Patent ID: 7985471
Filing Date: 2011-07-26
Classification: B23B,C23C,Y10T

Abstract:
1. A cutting tool insert, comprising a cemented carbide body and a coating, wherein the cemented carbide body comprises: WC, about 4.5-6.5 wt-% Co; and about 3-10 wt-% of at least one cubic carbide forming metal selected from the group consisting of groups IVb, Vb and VIb of the periodic table; wherein the cemented carbide body has an S-value of about 0.77-0.92 and a coercivity of about 10-20 kA/m adjacent; wherein the coating comprises an uppermost layer, wherein the uppermost layer is about 7-12 μm thick; wherein the uppermost layer comprises an α-Al where I(hkl)=measured intensity of the (hkl) reflection; Io(hkl)=standard intensity according to JCPDS card no 46-1212; n=number of reflections used in the calculation (8); (hkl) reflections used are: (012), (104), (110), (006), (113), (202), (024) and (116).