Forming of cutting edges by the controlled graphitization of dia

Details Forming of cutting edges by the controlled graphitization of dia Forming of cutting edges by the controlled graphitization of dia

1992-07-06

1993-11-02

Parker, Roscoe V.

Metal tools and implements, making

Blank or process

Cutlery

76DIG8, B21K 1100

Patent

active

052575640

ABSTRACT:
This disclosure relates to cutting instruments employing wedge-shaped cutting edges such as axes, knives, chisels and especially razor blades, said cutting edges being formed of diamond which has been shaped by contacting it with a moving, diamond surface under conditions of pressure and velocity sufficient to thermally convert a portion of the diamond on the cutting edge to softer forms of carbon.

REFERENCES:
patent: 2281975 (1942-05-01), Hill
patent: 4533812 (1985-08-01), Lorenz
patent: 5058562 (1991-10-01), Tsutsui et al.

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