| 摘要 |
A process and die for forming an end cap in an extruded ceramic tube. The end cap forming die has a body that is configured to be situated against a extrusion die. The body is provided with an end cap forming cavity to form the end cap. A backfill reservoir is provided within the body to receive ceramic material forming the ceramic tube from the end cap forming cavity. A passageway communicates between the end cap forming cavity and the backfill reservoir for passage of the ceramic material. The end cap forming cavity is positioned so that when the body is situated against the extrusion die, ceramic material is able to be forced into the end cap forming cavity, through the passageway, and into the backfill reservoir. A plunger projects into the backfill reservoir to force the ceramic material from the backfill reservoir back through the passageway and into the end cap forming cavity to compact the ceramic material so that the ceramic material within the end cap will be provided with a substantially uniform density.
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