Jig and ceramic isotropic compressed formation manner null for ceramic isotropic pressurization formation

摘要

PURPOSE:To obtain a plane molding from a powdered material in excellent dimensional accuracy and yield by having a hollow part in the molding mold of a ceramic isotropic compression molding jig, and arranging pressure medium films in either sides of the hollow part. CONSTITUTION:A powdered material mixed with a plasticizer is filled in the hollow part 2 of a molding mold 1, after filling, a protecting sheet 7 is displaced as required, and a pressure medium film 4 for example such as semitransparent elastomer or the like is put thereon, and further a supporting board 5 for example made of steel is arranged thereon, which has through holes 8 for transmitting pressure from a pressure medium, and then bolted with the bolt holes of the molding surface and the bolt holes 6' provided on the supporting board 5 and 5' in order to seal the jig air-tightly. An isotropic pressure molding jig constituted as mentioned above can manufacture a molding by the use of an isotropic pressure device Thereby, breakage and failure during the molding releasing work can be avoided; accordingly, there may be able to obtain a large-sized plane molding having excellent dimensional accuracy and high molding strength.