Honeycomb structure and process for production thereof

Details Honeycomb structure and process for production thereof Honeycomb structure and process for production thereof

2006-06-06

2006-06-06

Xu, Ling (Department: 1775)

Stock material or miscellaneous articles

Structurally defined web or sheet

Honeycomb-like

C428S117000, C428S118000, C428S034400, C428S188000

Reexamination Certificate

active

07056568

ABSTRACT:
A honeycomb structure, and a process for production thereof, formed by bonding into one piece via a bonding layer a plurality of honeycomb segments, the honeycomb segment having an outer wall, partition walls provided inside the outer wall, and a large number of through-holes divided by the partition walls and extending in the axial direction of the segment; the outer wall and bonding layer having a relation:in-line-formulae description="In-line Formulae" end="lead"?d*[(κa/da)+(κc/dc)]≧κ≧d*[(κa/da)+(κc/dc)]×0.6in-line-formulae description="In-line Formulae" end="tail"?wherein κc (W/mK) and dc (cm) are respectively the thermal conductivity and thickness of the outer wall, κa (W/mK) and da (cm) are respectively the thermal conductivity and thickness of the bonding layer, and κ (W/mK) and d (cm) are respectively the thermal conductivity and thickness of a layer which is the sum of the outer wall and the bonding layer.

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S. Gulati, “Strength and Thermal Shock Resistance of Segmented Wall-Flow Diesel Filters,”SAE Article,pp. 11-18, 1986.

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