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Surface-coated cutting tool which exhibits chipping resistance and wear resistance of hard coating layer has excellent high-speed heavy cutting work
Surface-coated cutting tool which exhibits chipping resistance and wear resistance of hard coating layer has excellent high-speed heavy cutting work
PROBLEM TO BE SOLVED: To provide a surface-coated cutting tool having a hard coating layer exhibiting excellent chipping resistance and wear resistance in high-speed heavy cutting.;SOLUTION: In this surface-coated cutting tool, a lower layer comprising an adhesive Ti compound layer and a reformed TiCN layer and an upper layer comprising a reformed (Al, Zr)2O3 layer are vapor-deposited on the surface of a tool base. When the quantity and positions of Σ3-adaptive grain boundaries which face the boundary surface between the upper layer and the lower layer are measured, 30-70% of the Σ3 adaptive grain boundaries facing the boundary surface form a crystal grain boundary in continuous with the Σ3-adaptive grain boundaries of the upper layer. Desirably, the ratio of Σ3 of the lower layer in the depth area of up to 1 μm from the boundary surface to at least the base surface side is 60% or more of the total of ΣN+1. The ratio of Σ3 of the upper layer is 60% or more of the total of ΣN+1.;COPYRIGHT: (C)2010,JPO&INPIT
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机译：要解决的问题：提供一种具有硬涂层的表面涂层切削工具，该涂层在高速重切削中具有出色的抗崩刃性和耐磨性。解决方案：在这种表面涂层切削工具中，下层包括一层Ti将化合物层和重整的TiCN层以及包括重整的（Al，Zr） 2 O 3 的上层气相沉积在工具基座的表面上。当测量面对上层和下层之间的界面的σ3自适应晶界的数量和位置时，面对界面的σ3自适应晶界的30-70％形成晶粒边界与上层的＆Sigma; 3自适应晶界连续。期望地，在从边界表面到至少底表面侧的最大1μm的深度区域中的下层的σ3的比率为总σN + 1的60％以上。上层的＆Sigma; 3的比例为＆Sigma; N + 1的总数的60％或更高。;版权：（C）2010，JPO＆INPIT
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