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US 7,465,219 B2Granted
Brut polishing of superhard materials
AssigneeDiamicron, Inc.
InventorsRichard H. Dixon, Clayton F. Gardinier, Troy Medford, Dean C. Blackburn, Victoriano Carvajal, Mark E. Richards, Art B. Curnow, Peter C. Cook
Life of this patent
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Abstract
Brut polishing of superhard materials to remove positive asperities by use of pressure and heat.
Claims25
A method for brut polishing surfaces of superhard materials comprising the steps of:
- selecting a surface of a superhard material which is to be polished;
- placing a tool in contact with the superhard surface so as to contact only a small portion of the superhard surface;
- rotating the tool so as to cause-relative motion between the superhard surface and the tool,
- applying pressure between said tool and said superhard surface in a manner that causes said superhard surface to heat enough to degrade positive asperities on said superhard surface in order to brut polish said superhard surface;
- and
- moving the tool relative to the superhard surface so as to move the contact area between the tool and the superhard surface across the superhard surface so as to polish the superhard surface;
- and
- wherein said bruting is achieved by use of essentially a single point of contact between said tool and said superhard surface.
5 more elements
A method for brut polishing surfaces of superhard materials comprising the steps of:
- obtaining a sintered compact of superhard material,
- selecting a surface of said superhard material to polish,
- selecting a bruting form to apply against said superhard surface in order to brut polish it,
- contacting the bruting form and the superhard surface such that only a small portion of the superhard surface is in contact with the bruting form at a time;
- rotating the bruting form to cause-relative movement between said bruting form and said superhard surface,
- applying pressure between said bruting form and said superhard surface,
- causing friction between said bruting form and said superhard surface,
- causing the temperature of at least a portion of said superhard surface in contact with said bruting form to increase, and
- moving the bruting form relative to the sintered compact to move the contact area between the bruting form and the superhard surface across the superhard surface and thereby polish the entire superhard surface by causing positive asperities on said superhard surface to be lowered or removed by a combination of said pressure, friction and temperature increase by a bruting effect;
- and
- wherein said bruting is achieved by use of essentially a single point of contact between said bruting form and said superhard surface.
8 more elements
Dependencies are inferred from the claim text.