| 摘要 |
<P>PROBLEM TO BE SOLVED: To produce a ceramic cylindrical molding with high accuracy, particularly, high uniformity of circumferential thickness in good yield. <P>SOLUTION: In production of a molding by filling ceramic powder in a shaping die having a columnar core rod and a cylindrical frame followed by cold isostatic pressing, the ceramic powder is filled in the shaping die by use of a funnel fixed above the shaping die while rotating the shaping die around the central axis of the columnar core rod. According to this, a ceramic cylindrical molding in which thickness unevenness in the same circumferential direction of less than 10% can be attained in 80% or more of the cylindrical portion thereof can be produced. <P>COPYRIGHT: (C)2012,JPO&INPIT |
