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    MANUFACTURING METHOD OF CERAMIC BODY
    1.
    发明申请
    MANUFACTURING METHOD OF CERAMIC BODY 审中-公开

    公开(公告)号：US20180243942A1

    公开(公告)日：2018-08-30

    申请号：US15855044

    申请日：2017-12-27

    申请人： NGK INSULATORS, LTD.

    发明人： Daniel Yukichi Kitaguchi

    IPC分类号： B28B11/24 ,  F27B9/24

    CPC分类号： B28B11/243 ,  C04B35/195 ,  C04B35/64 ,  C04B38/0006 ,  C04B2111/00793 ,  C04B2111/0081 ,  C04B2235/656 ,  C04B2235/6583 ,  C04B2235/661 ,  F27B9/2407

    摘要： A manufacturing method of a ceramic body which includes a firing step of firing a ceramic formed body in a firing kiln, wherein in the firing step, a temperature rise process until reaching a firing temperature of the ceramic formed body is divided into a plurality of temperature regions including a first temperature region, a second temperature region, and a third temperature region, the manufacturing method of the ceramic body further including an oxygen concentration adjustment step of adjusting a first oxygen concentration in the first temperature region in a range of 7 to 21 vol %, a maximum value of a second oxygen concentration in the second temperature region in a range of 3 to 11 vol %, and a maximum value of a third oxygen concentration in the third temperature region in a range of 3 to 11 vol %.

    Method for estimating characteristics of ceramic fired body
    3.
    发明授权
    Method for estimating characteristics of ceramic fired body 有权

    公开(公告)号：US11614394B2

    公开(公告)日：2023-03-28

    申请号：US16785994

    申请日：2020-02-10

    申请人： NGK INSULATORS, LTD.

    发明人： Daniel Yukichi Kitaguchi

    IPC分类号： G01N15/08 ,  G01N21/25 ,  G01N25/16 ,  G01N33/38

    摘要： A method for estimating characteristics of a ceramic fired body, the method including: preparing a ceramic fired body by firing a formed green body; measuring a color of the ceramic fired body; and with use of a correlation between the color and at least one characteristic selected from a group consisting of a porosity, a pore diameter, and a thermal expansion coefficient previously determined for a ceramic fired body having a same composition as that of the ceramic fired body, estimating the at least one characteristic of the ceramic fired body from the color of the ceramic fired body, measured in the previous step.

    Honeycomb formed body and method for producing honeycomb structure
    7.
    发明授权
    Honeycomb formed body and method for producing honeycomb structure 有权

    公开(公告)号：US11261134B2

    公开(公告)日：2022-03-01

    申请号：US16282743

    申请日：2019-02-22

    申请人： NGK INSULATORS, LTD.

    发明人： Daniel Yukichi Kitaguchi ,  Kouhei Kato ,  Shotaro Matsumoto

    IPC分类号： B01D46/00 ,  C04B38/00 ,  B28B11/24 ,  B28B11/08 ,  C04B35/195 ,  B28B11/04 ,  B01D46/24

    摘要： A honeycomb formed body containing a ceramics raw material, the honeycomb formed body including: a pillar shaped honeycomb structure portion having a plurality of rectangular cells, the cells being defined by partition walls and extending from a first end face to a second end face to form flow paths; an outer peripheral portion having outer peripheral portions X where the partition walls are covered with an outer peripheral wall; and outer peripheral portions Y where the partition walls are exposed. Each of the outer peripheral portions X includes a tapered portion having a gradually deceasing thickness of the outer peripheral wall toward a boundary portion with an adjacent outer peripheral portion Y. The tapered portion requires a length equal to or more than one time of an average cell pitch in the outer peripheral direction until thickness of the outer peripheral wall is halved.

    Manufacturing method of honeycomb structure
    9.
    发明授权
    Manufacturing method of honeycomb structure 有权

    公开(公告)号：US10265881B2

    公开(公告)日：2019-04-23

    申请号：US15434390

    申请日：2017-02-16

    申请人： NGK INSULATORS, LTD.

    发明人： Daniel Yukichi Kitaguchi ,  Toshihiro Fukui

    IPC分类号： B28B11/24 ,  C04B38/00 ,  C04B35/64 ,  B01J35/04 ,  B01J37/08 ,  B28B3/02 ,  B28B3/20

    摘要： The manufacturing method of the honeycomb structure includes a mounting step of mounting an extruded honeycomb formed body on a firing setter disposed on a shelf plate, and a firing step of firing the honeycomb formed body mounted on the firing setter to form the honeycomb structure, and in the mounting step, the firing setter is used in which a value obtained by dividing an area of a formed body end face of the honeycomb formed body by an area of a honeycomb mounting surface of the firing setter which faces the formed body end face and at least a part of which comes in contact with the formed body end face is in a range of 2.5 to 20.0.

    SETTER FOR FIRING, AND METHOD FOR MANUFACTURING HONEYCOMB STRUCTURE USING SETTER FOR FIRING
    10.
    发明申请
    SETTER FOR FIRING, AND METHOD FOR MANUFACTURING HONEYCOMB STRUCTURE USING SETTER FOR FIRING 审中-公开

    公开(公告)号：US20180363981A1

    公开(公告)日：2018-12-20

    申请号：US16102918

    申请日：2018-08-14

    申请人： NGK INSULATORS, LTD.

    发明人： Daniel Yukichi Kitaguchi

    IPC分类号： F27D3/00 ,  B01D46/00 ,  B01D46/24 ,  B28B3/20 ,  B28B11/24 ,  F27D5/00 ,  C04B38/00

    摘要： A setter for firing used for firing a honeycomb formed body and interposed between the honeycomb formed body and a shelf plate, the setter for firing including: a setter body part having a honeycomb placement surface at least partially in contact with a formed body end face of the honeycomb formed body and placing the honeycomb formed body on the honeycomb placement surface; and a setter supporting part that is provided below the setter body part and supports the setter body part, wherein a value obtained by dividing an area of the honeycomb placement surface of the setter body part by an area of a setter supporting surface of the setter supporting part that contacts the setter body part is in a range of 1.5 to 20.0.