Ngk Insulators, Inc.

Hirotada Nakamura

Takuya Yamada

Kensuke Okumura

Nobuyuki Umetsu

Junya Hasegawa

Nobuyuki Kuroki

A method for producing a ceramic formed body comprises: a wet mixing step of adding a liquid containing water to ceramic raw material mixed powder and subjecting it to wet mixing in a continuous mixer; and an extrusion molding step of feeding the wet mixed powder obtained in the wet mixing step to an extruder by a belt feeder and extruding the wet mixed powder. In the method for producing the ceramic formed body, an amount of the wet mixed powder fed to the extruder is adjusted based on an amount of mass change of the wet mixed powder stored in a reservoir provided between the continuous mixer and the belt feeder.

Method and device for producing ceramic formed body

A receiving tablefor supporting a side surface of a honeycomb formed body, the side surface being parallel to a cell extending direction. The receiving tablecomprises: a body portionhaving a grooveextending in one direction; a support portioncomprising: a flexible sheet substratein contact with a surface of the grooveof the body portionand a foam layerattached to the flexible sheet substratethe foam layerbeing brought into contact with the side surface of the honeycomb formed body; and fixing membersfor fixing the support portionto the body portionThe support portionis provided in a non-adhesive state to the body portion

Receiving table for honeycomb formed body, method for producing honeycomb formed body, and method for producing honeycomb fired body

A method for inspecting a pillar-shaped honeycomb formed body before firing includes a step a1 of capturing at least one of a first end surface and a second end surface of a pillar-shaped honeycomb formed body before firing with a camera to generate an image of the at least one of the first end surface and the second end surface; a step b1 of measuring a size of an opening of a plurality of cells in the image generated by step a1; and a step c1 of identifying abnormal cells with the opening having a size deviating from a predetermined allowable range from the cells based on a measurement result of step b1, and measuring a number of the abnormal cells.

Method for inspecting pillar-shaped honeycomb formed body before firing or after firing

A method for producing a honeycomb structure including producing an unfired pillar shaped honeycomb body; placing the unfired pillar shaped honeycomb body on a receiving table such that the unfired pillar shaped honeycomb body stands thereon; conveying the unfired pillar shaped honeycomb body placed on the receiving table; drying the unfired pillar shaped honeycomb body after the conveying step, or drying the unfired pillar shaped honeycomb body during the conveying to obtain a honeycomb dried body; and firing the honeycomb dried body to obtain a honeycomb structure. The receiving table includes at least one protrusion. In the honeycomb formed body conveying step, the unfired pillar shaped honeycomb body is conveyed while supporting it by inserting the at least one protrusion of the receiving table into a bottom surface of the unfired pillar shaped honeycomb body placed on the receiving table.

Method for producing honeycomb structure

A manufacturing method includes a mixing step, a kneading step of kneading a wet mixture, a liquid adding step of further adding a liquid to a kneaded material, a forming step of extruding a forming material of which viscosity is adjusted into a honeycomb formed body, a drying step of drying the honeycomb formed body, and a dimension measuring step of measuring a dry dimension of a honeycomb dried body that has been dried, where in the liquid adding step, the amount of the liquid to be added is adjusted based on the result of measuring the dry dimension of the honeycomb dried body.

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Nagoya, Japan

Hirotada Nakamura