发明名称 |
SURFACE-COATED CERMET CUTTING THROW-AWAY TIP HAVING HARD COATING LAYER EXHIBITING EXCELLENT CHIPPING RESISTANCE IN HIGH SPEED CUTTING OF HIGH HARDNESS STEEL |
摘要 |
PROBLEM TO BE SOLVED: To provide a coated cutting tip having a hard coating layer exhibiting excellent chipping resistance in high speed cutting of high hardness steel. SOLUTION: One layer of the hard coating layers of the coated cutting tip is constituted of a reformed TiCN layer showing a constituent atom sharing lattice point distribution graph in which a maximum peak exists inΣ3 and a distribution rate occupied in the whole of theΣ3 is≥60% in a constituent atom sharing lattice point distribution graph prepared based on a measured inclined angle obtained by irradiating each of crystal grains existing in a measuring range of a surface polishing surface with an electron beam by using a field emission scanning electronic microscope and measuring an inclined angle made by normals of a (001) surface and a (011) surface to be crystal faces of the crystal grains in relation to a normal of the surface polishing surface. The surface of the Al<SB>2</SB>O<SB>3</SB>layer is polished to have the surface roughness Ra:≤0.2μm, and a hard coating layer residual stress reduction pattern is formed by laser beam irradiation on the polishing surface. COPYRIGHT: (C)2007,JPO&INPIT
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申请公布号 |
JP2007216348(A) |
申请公布日期 |
2007.08.30 |
申请号 |
JP20060041147 |
申请日期 |
2006.02.17 |
申请人 |
MITSUBISHI MATERIALS CORP |
发明人 |
OSADA AKIRA;NAKAMURA KEIJI;HONMA HISASHI |
分类号 |
B23B27/14;B24C1/02;B24C11/00;C23C16/30 |
主分类号 |
B23B27/14 |
代理机构 |
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