Title:
METHOD FOR PRODUCING CERAMICS AND CONTROL APPARATUS
Document Type and Number:
Japanese Patent JP2018138502
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing ceramics, capable of creating an optimum atmosphere in a furnace by controlling temperature in the furnace along with oxygen concentration therein, thereby obtaining ceramics having good properties and a high quality, and to provide a firing furnace.SOLUTION: This invention relates to a method for producing ceramics, in which the ceramics are produced in a firing furnace having: a furnace for firing a compact formed by compacting raw ceramic material powder; a gas burner for heating the inside of the furnace; a gas duct for communicating the inside of the furnace with outside air; and a damper for adjusting a furnace pressure. The method includes the steps of: adjusting the temperature inside the furnace by adjusting the pressure of fuel gas to be supplied to the gas burner; and adjusting the oxygen concentration in the furnace by opening and closing the dumper for adjusting the furnace pressure. The step for adjusting the oxygen concentration is conducted through PLC control. The oxygen concentration can be measured by using a zirconia-type oxygen sensor.SELECTED DRAWING: Figure 1
Inventors:
NAKAGAWA MASAYOSHI
HYODO NOBUAKI
KASAMA YU
NIIMI YOSHIO
HYODO NOBUAKI
KASAMA YU
NIIMI YOSHIO
Application Number:
JP2017033547A
Publication Date:
September 06, 2018
Filing Date:
February 24, 2017
Export Citation:
Assignee:
DAIICHI NEKKEN CO LTD
NIIMI SANGYO KK
NIIMI SANGYO KK
International Classes:
C04B35/64; F27B17/00; F27D7/02; F27D7/06; F27D19/00
Attorney, Agent or Firm:
Hajime Amano
Fujimoto Katsune
Yoshinori Ikeda
Hiroshi Ogawa
Koji Ishida
Kenichi Fujinaka
Matsuura Masako
Fujimoto Katsune
Yoshinori Ikeda
Hiroshi Ogawa
Koji Ishida
Kenichi Fujinaka
Matsuura Masako