| 摘要 |
PROBLEM TO BE SOLVED: To provide a cemented-carbide tool in which the tool life can be lengthened.SOLUTION: A cemented-carbide tool 1 is equipped with a sintered body 2. The sintered body 2 comprises a cemented-carbide component and a nitride forming component. The cemented-carbide component consists of two kinds or more selected from a group consisting of WC, Co, TiC and TaC and includes at least WC and Co. The nitride forming component consists of two kinds or more selected from the following first to third groups: the first group: Al, Ti and V; the second group: Cr and Si; and the third group: B, Nb and Zr and includes at least one kind selected from the first group and one kind selected from the second group. Total contents of the nitride forming component is 0.7-3.0 mass% based on 100 mass% of the cemented-carbide component. The sintered body 2 is equipped with a nitrided layer 3 including the nitride of the nitride forming component as a surface layer.SELECTED DRAWING: Figure 1 |
