Ngk Insulators, Inc.

Tokyo Electric Co.

Hiromi Shimada

Shinji Oshima

Yasuhiro Horiba

Yohei Takemori

Shinzou Hayashi

Akira Kobayashi

Masaaki Ohshima

Senji Atsumi

The drying method performs drying the honeycomb formed article by such an arrangement that superheated steam or mixed gas of steam and hot air, temperature and humidity of which is regulated so that wet-bulb temperature thereof becomes 70&#xb0; C. or higher, is made to pass through the cells of the honeycomb formed article. The drying apparatus includes a steam supply unit that supplies the superheated steam, a buffer chamber that aligns the superheated steam supplied from the steam supply unit, an upper chamber disposed above the buffer chamber to locate the honeycomb formed article, and a hood unit that recovers the superheated steam which has passed through the honeycomb formed article.

Method of drying honeycomb article, and drying apparatus therefor

A method of drying a honeycomb formed article, in which the honeycomb formed article can be dried in a short time while prohibiting occurrence of defects such as deformation, breakage and the like. There is provided a drying method of an unfired honeycomb formed article including raw material composition containing ceramics raw material, water, and binder, and having a plurality of cells, the cells being separated by partition walls to be passage of fluid, and electromagnetic wave drying is performed to dry the honeycomb formed article after the honeycomb formed article is preheated by steam.

Method of drying honeycomb formed article

A solid electrolyte tube for sodium sulfur cells, having an outer surface of a roughness defined by an arithmetical mean deviation of the profile (R.sub.a) of not exceeding 2.0 .mu.m and a maximum height of the profile (R.sub.max) of not exceeding 15 .mu.m, is produced by leveling the outer surface of the solid electrolyte tube in a state of green body, bisque fired and calcined body, or fired body, by means of a finishing apparatus such as a centerless grinding machine, external cylindrical grinding machine, lathe, or the like. The solid electrolyte tube having a smooth and even surface can be prevented from crack formation due to local concentration of Na ion, S, sodium polysulfide and thermal stress thereon, so that it can improve durability and reliability.

Solid electrolyte tube for sodium sulfur cells and surface finishing

A ceramic cylindrical body just after extrusion-molding is held on a porous support at a floating state by air pressure and dried while supplying air to the inside of the ceramic cylindrical body.

Method of drying ceramic cylindrical bodies

A ceramic body is continuously extruded through a die of an extruder and held on a porous support at a slightly floating state by air pressure jetted from pores of the support.

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Nagoya, Japan

Hiromi Shimada