Plastic and nonmetallic article shaping or treating: processes – Outside of mold sintering or vitrifying of shaped inorganic... – Producing article having plural hollow channels
Patent
1992-12-02
2000-03-07
Derrington, James
Plastic and nonmetallic article shaping or treating: processes
Outside of mold sintering or vitrifying of shaped inorganic...
Producing article having plural hollow channels
264632, 264642, 264645, 264678, C04B 3564
Patent
active
060336196
ABSTRACT:
A method for manufacturing ceramics with fine hole(s) includes the steps of: forming independently ceramic compacts, said ceramic compacts having their shapes corresponding to the divided parts of one integrated body having at least one fine hole along which the integrated body is divided; joining said compacts into an integrated form by cold isostatic pressing (CIP); and firing the integrated compact. Another method for manufacturing ceramics with fine hole(s) includes the steps of: forming independently ceramic compacts; grooving said compacts to make at least one desired partial hole in given places of each cross section by machining; joining said compacts into an integrated form by cold isostatic pressing (CIP); and firing the integrated compact. According to these methods, there can be obtained a sintered ceramic body with holes, each having a very small diameter and an unrestricted depth, or holes in a complex or curved shape.
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Patent Abstracts of Japan, vol. 16, No. 161 (M1237) Apr. 20, 1992 & JP-A-40 10 905 (Nippon Steel Corp. Jan. 16, 1992 *abstract*.
Patent Abstracts of Japan, vol. 13, No. 221 (c-598) May 23, 1989 & JP-A-10 33 080 (NGK Insulators Ltd) Feb. 2, 1989 *abstract*.
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Derrington James
NGK Insulators Ltd.
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