JIG AND METHOD FOR ISOSTATIC-PRESSING CERAMICS

摘要

A jig for isostatic-pressing ceramics comprises a mold having a cavity in the center thereof and pressure-medium diaphragms arranged on the both sides of the cavity. Ceramic feed granules filled in the cavity are isostatically pressurized through the diaphragms. Further, a jig for isostatic-pressing ceramics comprises a pressuretransferable plate with at least one penetrated holes placed on the outer surface of the pressure-medium diaphragm for transferring outside pressure. In addition, a method for isostatic-pressing ceramics, in which ceramic feed materials are filled in the cavity of the jig as described above, and shaping is conducted by applying pressure isostatically from outside after air-tight seal has been established between the pressure-medium diaphragms and the mold. Therefore; large size shaping ceramic can be easily produced in a single stage of isostatic-pressing with excellent dimensional accuracy.