Patent ID: 8435651
Filing Date: 2013-05-07
Classification: B23D,C23C,Y10T

Abstract:
1. A wood cutting tool having a hard fundamental layer containing at least one selected from the group consisting of a chromium material and a chromium nitride material and coated on at least a rake face or a clearance face of a substrate formed of a cemented carbide alloy, a bearing steel or a tool steel, wherein the hard fundamental layer is coated with a hard main layer containing a chromium oxide material, a thickness of the hard main layer is about 0.2 μm to 5.0 μm, a thickness of the hard fundamental layer is about 0.075 μm to 10.0 μm, the hard fundamental layer and the hard main layer are alternately laminated into plural laminates, and a total thickness of all the layers is about 15.0 μm or less.