Method and apparatus for extruding large honeycombs
US5552102A · kind A · utility
10Cited by
14References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1994 |
| Grant date | Sep 3, 1996 |
| Priority date | — |
| Expiry date | Dec 16, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28B3/269
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Extrusion die apparatus and an extrusion method for extruding large-cross-section honeycomb structures from plasticized ceramic batch materials are described, the apparatus comprising a die having a support rod connected to its central portion, the support rod being anchored to support means upstream of the die. The support rod and support means act to limit die distortion during extrusion, reducing die strain and stress to levels permitting large honeycomb extrusion without die failure. Dies of optimal thickness are disclosed which reduce the maximum stresses exerted on the die during extrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.