| 摘要 |
<p>A cold isopressing method and mold for compacting a granular ceramic material (28) in which the granular ceramic material (28) is introduced into a cylindrical pressure bearing element (10) of an isopressing mold (1). The cylindrical pressure bearing element (10) is sufficiently rigid so as to maintain its shape during the introducing of the granular ceramic material (28). Such element (10) is also sufficiently resilient in a radial direction thereof to deform and bear against the granular ceramic material (28) upon the application of the hydrostatic pressure and to substantially return to its original shape upon the relaxation of the hydrostatic pressure, thereby to allow retraction of the cylindrical pressure bearing element (10) from the granular ceramic material (28) after compaction. In a further aspect, an isopressing method and mold is provided in which the cylindrical pressure bearing element (10) is provided with an enlarged end bore (20) to form an enlarged end section (40) in the finished ceramic tube (36) for sealing purposes.</p> |
