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METHOD FOR DRYING COLUMNAR HONEYCOMB FORMED BODY AND METHOD FOR PRODUCING COLUMNAR HONEYCOMB STRUCTURE
A method for drying at least one unfired columnar honeycomb formed body, the honeycomb formed body comprising a raw material composition containing at least one raw material of ceramics, water and at least one heat-gelling binder, and comprising plurality of cells comprising flow paths penetrating from a first bottom surface to a second bottom surface in an inside of an outer sidewall, the cells being defined by partition walls, the method comprising a step of drying the honeycomb formed body by allowing hot gas satisfying 0.8≤T2/T1≤3.3 in which T1 represents a gelation temperature of the binder (° C.) and T2 represents a wet-bulb temperature of hot gas (° C.), to pass through the flow paths of the plurality of cells such that the hot gas flows into the first bottom surface and flows out of the second bottom surface, while surrounding an outer side surface of the honeycomb formed body by a correction mold comprising an inner side surface shape corresponding to the outer side surface shape of the honeycomb formed body, wherein during the step of drying the honeycomb formed body, at least a part of the outer side surface of the honeycomb formed body receives pressure from the inner side surface of the correction mold, whereby the honeycomb formed body is subjected to shape correction.
METHOD FOR DRYING COLUMNAR HONEYCOMB FORMED BODY AND METHOD FOR PRODUCING COLUMNAR HONEYCOMB STRUCTURE
A method for drying at least one unfired columnar honeycomb formed body, the honeycomb formed body comprising a raw material composition containing at least one raw material of ceramics, water and at least one heat-gelling binder, and comprising plurality of cells comprising flow paths penetrating from a first bottom surface to a second bottom surface in an inside of an outer sidewall, the cells being defined by partition walls, the method comprising a step of drying the honeycomb formed body by allowing hot gas satisfying 0.8≤T2/T1≤3.3 in which T1 represents a gelation temperature of the binder (° C.) and T2 represents a wet-bulb temperature of hot gas (° C.), to pass through the flow paths of the plurality of cells such that the hot gas flows into the first bottom surface and flows out of the second bottom surface, while surrounding an outer side surface of the honeycomb formed body by a correction mold comprising an inner side surface shape corresponding to the outer side surface shape of the honeycomb formed body, wherein during the step of drying the honeycomb formed body, at least a part of the outer side surface of the honeycomb formed body receives pressure from the inner side surface of the correction mold, whereby the honeycomb formed body is subjected to shape correction.
METHOD FOR DRYING COLUMNAR HONEYCOMB FORMED BODY AND METHOD FOR PRODUCING COLUMNAR HONEYCOMB STRUCTURE
KUNO SHUHEI (author) / TAKAHASHI HIRONORI (author)
2018-09-27
Patent
Electronic Resource
English
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