Plastic and nonmetallic article shaping or treating: processes – Including step of generating heat by friction
Patent
1985-09-30
1987-09-29
Derrington, James
Plastic and nonmetallic article shaping or treating: processes
Including step of generating heat by friction
264 62, 264313, 416241B, C04B 3332, C04B 3700
Patent
active
046967770
ABSTRACT:
A method of producing a composite ceramic structure, including: preparing a formed ceramic piece which constitutes a portion of the composite ceramic structure; preparing a rubber mold having a molding surface defining a remaining portion of the composite ceramic structure; positioning the rubber mold in contact with a joining part of the formed ceramic piece from which the remaining portion of the composite ceramic structure extends; covering an exposed surface of the formed ceramic piece, and at least an end of the rubber mold adjacent to the joining part of the formed ceramic piece, with an elastic member; filling the rubber mold with a mass of ceramic powder such that the mass of ceramic powder contacts the joining part of the formed ceramic piece, the mass of ceramic powder being substantially identical in composition with a ceramic material of which the formed ceramic piece is formed; applying a static hydraulic pressure to an assembly of the formed ceramic piece and the mass of ceramic powder in the rubber mold, thereby compacting the ceramic powder in the rubber mold and integrating the compacted mass of ceramic powder with the formed ceramic piece into an integral piece; and firing the integral piece into the composite ceramic structure.
REFERENCES:
patent: 3499066 (1970-03-01), Murray
patent: 3854189 (1974-12-01), Ezis et al.
patent: 4248813 (1981-02-01), Hattori et al.
patent: 4396445 (1983-08-01), Sasaki et al.
patent: 4460527 (1984-07-01), Kato
patent: 4552510 (1985-11-01), Takeyuki
patent: 4604252 (1986-08-01), Stigler
Derrington James
NGK Insulators Ltd.
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