Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – Mica particles
Patent
1981-04-22
1983-06-21
Hall, James R.
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
Mica particles
B22F 100
Patent
active
043893627
ABSTRACT:
A method for manufacturing an article to an intended near final shape and size with powder as the starting material. The powder is placed in a first capsule having the shape of the desired article and a size which allows for a suitable decrease in volume when pressing the powder into a solid body. This first capsule is placed in a second larger capsule and is surrounded on all its sides by a medium which is viscous at the compression temperature. The second outer capsule with its contents is heated, inserted into a press chamber, and surrounded by a readily deformable heat-insulating material such as talcum powder. A piston is inserted into the press chamber and acts to generate a pressure which compresses the material in the first capsule into a homogeneous, solid body.
REFERENCES:
patent: 2568157 (1951-09-01), Lepp et al.
patent: 4142888 (1979-03-01), Rosmus
patent: 4260582 (1981-04-01), Kumar et al.
ASEA Aktiebolag
Hall James R.
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