发明名称 |
SURFACE COATED CUBIC BORON NITRIDE-BASE SINTERED MATERIAL-MADE CUTTING TOOL HAVING HARD COATING LAYER EXHIBITING EXCELLENT CHIPPING RESISTANCE IN INTERMITTENT HEAVY CUTTING FOR HIGH-HARDNESS STEEL |
摘要 |
PROBLEM TO BE SOLVED: To provide a surface coated cubic boron nitride-base sintered material-made cutting tool having a hard coating layer exhibiting excellent chipping resistance in intermittent heavy cutting for hihg-hardness steel. SOLUTION: In this surface coated cubic boron nitride-base sintered material-made cutting tool, a hard coating layer is vapor-depositioned on the surface of a tool base made of cubic boron nitride-base sintered material. The hard coating layer has a (Ti, Al)N layer, which satisfies the composition formula: (Ti<SB>1-X</SB>Al<SB>X</SB>)N (wherein X indicates 0.45 to 0.70 by atomic ratio), shows a specified inclination angle frequency distribution graph when electron beams are applied to individual crystal grains having a cubic crystal lattice existing within a measurement range of surface polishing surface using a field emission type scan electronic microscope to measure an angle of inclination made by normal of [100] face which is a crystal face of the crystal grain to the normal of the surface polishing surface, and has an average layer thickness of 2 to 15μm. COPYRIGHT: (C)2006,JPO&NCIPI
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申请公布号 |
JP2006181654(A) |
申请公布日期 |
2006.07.13 |
申请号 |
JP20040375139 |
申请日期 |
2004.12.27 |
申请人 |
MITSUBISHI MATERIALS CORP;MITSUBISHI MATERIALS KOBE TOOLS CORP |
发明人 |
RI NARIYOSHI;TAKAOKA HIDEMITSU |
分类号 |
B23B27/14;B23C5/16;B23P15/28;C23C14/06 |
主分类号 |
B23B27/14 |
代理机构 |
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