Graphite molding powder and method of preparation
AssigneeStackpole Carbon Company
InventorsJohn W. Borkowski, La Vern J. Lenze, Jr., Alan F. Campbell, William A. Nystrom
Life of this patent
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Abstract
Vermiform graphite is compressed to produce a preform with a density of about 0.03 to 0.8 g/cc, followed by comminuting the preform to produce a graphite molding powder that will have a typical mold fill-ratio between about 7 and 10 to 1 for making molded graphite parts with a density of at least 1.1 g/cc.
Claims5
The method of making a binder-free graphite molding compound having a mold fill-ratio between about 7 and 10 to 1 suitable for making molded graphite parts having a density of at least 1.1 g/cc, comprising compressing vermiform graphite to produce a preform with a density of about 0.03 to 0.8 g/cc, and then comminuting said preform to produce a powdered molding compound in which substantially all of the particles are smaller than 48 mesh and at least 40% of the particles are greater in size than 100 mesh.
A graphite molding compound made by the method recited in any one of the above claims.
Dependencies are inferred from the claim text.