Coated cutting insert

Details Coated cutting insert Coated cutting insert

1991-05-31

1993-02-23

Bishop, Steven C.

Cutters, for shaping

Comprising tool of specific chemical composition

51295, 427249, B23C 520, B23B 2716

Patent

active

051884895

ABSTRACT:
A coated indexable cutting insert for wet and dry milling of cast irons is provided. The substrate of the insert is composed of a cemented tungsten carbide based composition containing about 5.7 to about 6.4 weight percent cobalt and about 2.9 to about 3.6 weight percent tantalum. The coating includes two coatings of differing composition. The first coating is selected from titanium carbide, titanium carbonitride, and titanium nitride. The second coating is alumina.

REFERENCES:
patent: 2356009 (1944-08-01), Schwarzkopf
patent: 4643620 (1987-02-01), Fujii et al.
patent: 4830886 (1989-05-01), Cho et al.
patent: 4942097 (1990-07-01), Santhanam et al.
patent: 4966501 (1990-10-01), Nomura et al.
patent: 4984940 (1991-01-01), Bryant et al.
N. Sugaya et al., "Einsatz von Hartmetallen mit CVD-Mehrfacheschichtungen beim Frasen von Gusseisen in der Fertigung," VDI Berichte 762--Schneidstoffe und Werkzeuge, VDI-Verlag GmbH (1989), pp. 211-220.
P. Schwarzkopf et al., "Cemented Carbides," The MacMillan Co., (1960) pp. 166-176.
Tools A-D.
Tools E.
"Mill with Coated Inserts ? Sure!" Modern Machine Shop, Oct. 1987, pp. 52-59.

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