Cutting tool and tool with holder

Details Cutting tool and tool with holder Cutting tool and tool with holder

2005-01-04

2005-01-04

Pyon, Harold (Department: 1772)

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

C428S141000, C428S332000, C204S192380, C407S119000

Reexamination Certificate

active

06838151

ABSTRACT:
A cutting tool1includes a hard coating formed on the surface of a substrate formed of, for example, a hard material of cemented carbide (WC-Co-type cemented carbide) equivalent to JIS K10 and polished into the shape of ISO SPGN120312. The cutting tool1has a plate-shape with a rake face (the main surface side) that is wider than the opposite face. The hard coating has a thickness in the range of from 1 μm to 5 μm, is formed of a TiAlN material, and has a Ti/Al ratio of 1. Coarse grains present in the hard coating and having a size not less than coating thickness occupy an area percentage not greater than 5% by area. The hard coating has a surface roughness Ra of not greater than 0.1 μm and a surface roughness Rz of not greater than 1 μm.

REFERENCES:
patent: 5376444 (1994-12-01), Grotepass et al.
patent: 5709907 (1998-01-01), Battaglia et al.
patent: 5879823 (1999-03-01), Prizzi et al.
patent: 6033734 (2000-03-01), Muenz et al.
patent: 2901043 (1999-03-01), None
patent: WO 9408745 (1994-04-01), None
Konyashin, et al., “Nanograined Titanium Nitride Thin Films,” Advanced Materials, 10, No. 12, 1998, pp. 952-955.
Musil, et al., “Superhard Nanocomposite Ti1-xAlxN Films Prepared by Magnetron Sputtering,” Thin Solid Films, 365, 2000, pp. 104-109.

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