| 摘要 |
PURPOSE: A die is provided to form an end cap in an extruded ceramic tube having a uniform thickness, intensity, and density. CONSTITUTION: A die(1) for forming an end cap has a body(10) configured to be situated against an extrusion die. The body(10) is provided with an end cap forming cavity(12). A backfill reservoir(14) is provided within the body(10) to receive ceramic material forming the ceramic tube from the cavity. A passageway(16) communicates between the cavity(12) and the backfill reservoir(14) for passage of the ceramic material. The cavity(12) is positioned so that when the body(10) is situated against the extrusion die(4), ceramic material is able to be forced into the cavity(12), through the passageway(16), and into the backfill reservoir(14). A plunger(18) are inserted into the backfill reservoir(14) to compact the ceramic material so that the latter within the end cap will be provided with a substantially uniform density.
|
