Title:
CERAMIC HEATER AND GLOW PLUG PROVIDED WITH THE SAME
Document Type and Number:
Japanese Patent JP3962216
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a highly durable ceramic heater, having well-balanced various characteristics, especially mechanical strength and temperature rise characteristics, and provide a manufacturing method of the same and a glow plug provided with the same.
SOLUTION: The ceramic heater 1 is provided by injecting kneaded material, which is made by adding a binder to powder mixture containing silicon nitride, erbium oxide, silica, and tungsten carbide and kneading, in a mold provided with a U-shaped recessed part with tungsten lead wires 12a, 12b fixed, where the tungsten lead wires are adjusted to have a fitting area of the lead wire and the heating resistor 11 to exceed 0.1 mm2 and smaller than 20 mm2 by a diameter of a wire and lengths of the lead wires 12a and 12b projected in the mold, obtaining a molded body to be the heating resistor, mounting in split molds which is to become an insulator 13, and hot-pressing.
Inventors:
Takaaki Asano
Nobuyuki Hotta
Nobuyuki Hotta
Application Number:
JP2001045517A
Publication Date:
August 22, 2007
Filing Date:
February 21, 2001
Export Citation:
Assignee:
Nippon Special Ceramics Co., Ltd.
International Classes:
F23Q7/00; H05B3/02; H05B3/18; H05B3/48; (IPC1-7): H05B3/02; F23Q7/00; H05B3/18; H05B3/48
Domestic Patent References:
| JP7282960A |
Attorney, Agent or Firm:
Yoshinobu Hagino
Kiyoshi Kojima
Kiyoshi Kojima