Ngk Insulators, Inc.

Makoto Nakajo

Yuji Asai

Takeyuki Ishii

Toshihiro Fukui

A manufacturing method of a honeycomb structure including:

Manufacturing method of honeycomb structure

An undried honeycomb formed bodyis subjected to high-frequency heating in an atmosphere where humidity and temperature are maintained at 30 to 65% and 75 to 130&#xb0; C., respectively, such that 50 to 99 mass % of water contained in the undried honeycomb formed bodyis evaporated at the end of high-frequency heating, whereby the amount of water vaporized from the outer part of the undried honeycomb formed bodyis increased, thereby reducing a difference between amount of water vaporized from the inner part of the undried honeycomb formed bodyand that of water vaporized from the outer part thereof as well as reducing a difference between drying degree of the inner part of the undried honeycomb formed bodyand that of the outer part thereof, thereby producing a dried honeycomb formed bodyin which deformation of the partition walls is suppressed. The invention provides a honeycomb formed body drying method which prevents deformation of partition walls of the honeycomb formed body during drying thereof.

Method and apparatus for drying honeycomb formed body

The invention provides a honeycomb formed structure drying method including causing undried honeycomb formed structuresplaced on standsto pass through a drying apparatus, thereby drying the undried honeycomb formed structures through high-frequency heating, to thereby form dried honeycomb formed structures; removing the dried honeycomb formed structuresfrom the stands; cooling the standswhich have been heated dried in the drying apparatusare cooled to a temperature lower than the gelation temperature of the undried honeycomb formed structures; placing newly formed undried honeycomb formed structureson the cooled stands; drying the undried honeycomb formed structures by passing through the drying apparatus; and repeating these operations. The honeycomb formed structure drying method prevents deformation such as warpage of partition walls of honeycomb formed structures during drying thereof.

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Nagoya, Japan

Makoto Nakajo