Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – By mechanically introducing gas into material
Patent
1990-09-19
1992-12-08
Derrington, James
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
By mechanically introducing gas into material
264 86, 264220, 264225, 264226, 264227, C04B 3328
Patent
active
051695782
ABSTRACT:
A slip casting mold suitable to be used for the production of a hollow ceramic article for insert casting can be easily produced by a method wherein granules having an average grain size of at least 30 .mu.m are adhered to the surface of a mold to produce a mold having a 10 point average surface roughness R.sub.z of at least 30 .mu.m, and the resulting mold is used in the production of the slip casting mold.
REFERENCES:
patent: 2172466 (1939-09-01), Edwards
patent: 3568723 (1971-03-01), Sowards
patent: 4338272 (1982-07-01), Pelton
patent: 4867662 (1989-09-01), Shimahara
patent: 4913868 (1990-03-01), Ito
Derrington James
NGK Insulators, Inc.
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