Coated pcbn cutting tools

Details Coated pcbn cutting tools Coated pcbn cutting tools

B - Operations, Transporting

24

D

B24D 3/14 (2006.01) C04B 41/52 (2006.01) C04B 41/89 (2006.01) C23C 30/00 (2006.01)

Patent

CA 2327092

The present invention provides a coated sintered body which can be used in precious machining hardened steel. The coated PCBN cutting tool comprises a substrate which contains not less than 35 volume % and not more than 85 volume % of CBN, and a hard coated layer formed on the substrate. The hard coated layer comprises at least one compound layer consisting of at least one element selected from a group of 4a, 5a, 6a elements of the periodic table and A1, and at least one element selected from a group of C, N and O. The thickness of the layer is not less than 0.3 µm and not more than 10 µm. The center-line mean roughness of the hard coated layer is not more than 0.1 µm.

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