Method of fabricating honeycomb body
US6932932B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2002 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Aug 12, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2206/046
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Method of fabricating at least a honeycomb body include drying a plurality of honeycomb bodies, each having a multiplicity of cells arranged in the shape of a honeycomb and having a wall thickness of 0.125 mm or less, without cracking or wrinkling in the outer peripheral skin portion of the mold. Extrusion-molded argillaceous honeycomb bodies may be dried by placement on porous ceramics trays, having a dielectric loss of 0.1 or less, a porosity of 10% or more and a sectional open area ratio of 50% or more, exposure to at least 70% humidity and simultaneous irradiation with microwaves of 1,000 to 10,000 MHz. Alternatively, extrusion-molded argillaceous honeycomb bodies may be dried by exposure to at least 70% humidity and simultaneous irradiation with microwaves of 1,000 to 10,000 MHz, after which hot air is passed through the cells of the honeycomb bodies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.