Coated cemented carbide cutting tool
AssigneeMitsubishi Materials Corporation
InventorsTakatoshi Oshika, Toshiaki Ueda
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Abstract
A coated cemented carbide cutting tool member having excellent ability to prevent breakage and chipping around its cutting edge, exhibits high wear resistance in severe cutting operations comprises a hard sintered substrate and a hard coating layer deposited on the surface of said substrate, the hard coating layer comprises an alternated multi-layer structure having a total thickness of between 0.5 to 20 μm and comprising the first thin layer of titanium compounds and the second thin layer of hard oxide materials whose individual thickness is between 0.01 to 0.3 μm.
Claims8
A coated cemented carbide cutting tool member, comprising a hard sintered substrate and a hard coating layer deposited on the surface of the substrate, wherein
- the hard coating layer comprises an alternating multilayer structure having a total thickness in a range of from 0.5 to 20 μm and comprising a first thin layer of titanium compounds and a second thin layer of hard oxide materials whose individual thickness is in a range of from 0.01 to 0.3 μm;
- and
- the thickness ratio of the second thin layer to the first thin layer is in a range of from 2 to 4.
Dependencies are inferred from the claim text.