Method of firing ceramic honeycomb structure

Details Method of firing ceramic honeycomb structure Method of firing ceramic honeycomb structure

1992-09-28

1993-10-26

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Controlling heat transfer with molding material

264 63, 264 64, C04B 3564

Patent

active

052563472

ABSTRACT:
A method for firing a ceramic honeycomb structure by a single furnace at a predetermined temperature in a predetermined atmosphere, while controlling combustion of a burner means for heating the ceramic honeycomb structure from the outside thereof. To this end, temperatures at the inside and outside portions of the ceramic honeycomb structure are detected, and the outside temperature thereof is regulated relative to the inside temperature thereof, based on the detected temperatures. The method ensures stable firing to produce a high-quality ceramic honeycomb structure, in which a pore-forming agent is uniformly burnt throughout the inside and outside of the product and the difference in the diameter of fine holes between those inside and those outside thereof is minimized so as to eliminate occurrence of cracks within and at end portions of the ceramic honeycomb structure.

REFERENCES:
patent: 3932310 (1976-01-01), Turner
patent: 4055614 (1977-10-01), Morikawa et al.
patent: 4550005 (1985-10-01), Kato
patent: 4680153 (1987-07-01), Kinder et al.
patent: 4795598 (1989-01-01), Billiet
patent: 4927577 (1990-05-01), Oktaka
McFadden et al., The Jet Burner-A New Concept in Fast Precision Firing, Ceramic Bulletin, pp. 160-164, vol. 41, No. 3, 1962.

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