Coated cutting tool and method for manufacturing the same

Coated cutting tool and method for manufacturing the same

  • CN 104,870,686 A
  • Filed: 12/20/2013
  • Published: 08/26/2015
  • Est. Priority Date: 12/21/2012
  • Status: Active Application
First Claim
Patent Images

1. be coated with a cutting tool, it comprises:

  • Substrate, described substrate has the cutting edge of rake face, rear knife face and the confluce at described rake face and described rear knife face, described cutting edge has by the interior chamfering connecing oval description, connects ellipse and have the first axle W along described rake face and the second axle H along described rear knife face in described, andCoating, described coating has thickness T, comprises the first layer and the deposition second layer on the first layer,It is characterized in that the described second layer comprises the sandwich structure be made up of internal oxidation aluminium lamination, middle layer and outer alumina layer, wherein said internal oxidation aluminium lamination is exposed by opening in described outer alumina layer, and described opening described cutting edge width at least partially on to extend and in that orthogonal direction along the extension at least partially of described cutting edge.

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