HIGH ISOSTATIC STRENGTH HONEYCOMB STRUCTURES AND EXTRUSION DIES THEREFOR

    公开(公告)号:WO2019213569A1

    公开(公告)日:2019-11-07

    申请号:PCT/US2019/030663

    申请日:2019-05-03

    Abstract: A honeycomb structure (110) includes intersecting porous walls (106). Inlet channels (108i) and outlet channels (108o) are formed by the intersecting porous walls (106), wherein the inlet channels (108i) comprise inlet hydraulic diameters (HDi) and the outlet channels (108o) comprise outlet hydraulic diameters (HDo). The inlet channels (108i) comprise inlet corners (220i) with inlet corner radii (Ri) and the outlet channels (108o) comprise outlet corners (220o) with outlet corner radii (Ro). A centerpost (124) is defined by adjacent opposing inlet corners (220i) of two of the inlet channels (108i) and adjacent opposing outlet corners (220o) of two of the outlet channels (108o). A first diagonal length (Dl) is a shortest distance between the opposing outlet corners (220o) of the two outlet channels (108o) and a second diagonal length (D2) is a shortest distance between the opposing inlet corners (220i) of the two inlet channels (108i). The honeycomb structure (110) has certain aspect ratios D1:D2 depending on hydraulic diameter ratios HDi:HDo. Other honeycomb structures (110) and bodies (100) and extrusion dies (420) are disclosed.

    SYSTEM AND METHOD FOR VAPOR DEPOSITION COATING OF EXTRUSION DIES USING IMPEDANCE DISKS

    公开(公告)号:WO2020139580A1

    公开(公告)日:2020-07-02

    申请号:PCT/US2019/066137

    申请日:2019-12-13

    Abstract: Methods of depositing an inorganic material on an extrusion die including positioning an extrusion die within a vapor deposition chamber, positioning an impedance disk over a face of the extrusion die, the impedance disk having a plurality of through holes and the face of the extrusion die having a plurality of slots defined by a plurality of extrusion die pins, and flowing one or more deposition gases through the plurality of through holes and into the plurality of slots to deposit inorganic particles on side walls of the plurality of pins. The total impedance to the flow of the deposition gases across the impedance disk and the extrusion die may be equal to a disk impedance of the impedance disk plus a die impedance of the extrusion die, and the disk impedance may be at least 40% of the total impedance to the flow of the deposition gases.

    CERAMIC HONEYCOMB BODIES, HONEYCOMB EXTRUSION DIES, AND METHODS OF MAKING CERAMIC HONEYCOMB BODIES
    3.
    发明申请
    CERAMIC HONEYCOMB BODIES, HONEYCOMB EXTRUSION DIES, AND METHODS OF MAKING CERAMIC HONEYCOMB BODIES 审中-公开
    陶瓷蜂窝体,蜂窝状挤出机,以及制造陶瓷蜂窝体的方法

    公开(公告)号:WO2017040138A1

    公开(公告)日:2017-03-09

    申请号:PCT/US2016/048345

    申请日:2016-08-24

    Abstract: A method to form a laminar integral skin of a honeycomb structure is provided. The method includes extruding a ceramic precursor batch through a die with feedholes in entry side and slots in exit face of the die to form the honeycomb structure. In a region on the periphery of the die configured to form the cell matrix, a series of concentric slots around the matrix in the exit face of the die are configured to feed skin onto the matrix. Ring sections between concentric slots are angled away from the center and a mask is disposed on top of the periphery producing a channel for extruded skin to meet and bond to extruded matrix. Optionally, slots in the skin-forming ring sections enhance knitting between laminar skin layers. The die and honeycomb body having uniform integral skin are also provided.

    Abstract translation: 提供一种形成蜂窝状结构体的层叠整体皮肤的方法。 该方法包括通过模具将进料口中的进料孔和模具的出口面中的槽挤出陶瓷前体批料以形成蜂窝结构体。 在被配置成形成单元矩阵的管芯的周边上的区域中,在管芯的出口面中的围绕矩阵的一系列同心槽构造成将皮肤馈送到基体上。 同心槽之间的环形部分与中心成一定角度,并且掩模设置在外围的顶部,产生用于挤出的皮肤的通道以与挤出的基质结合。 任选地,成皮环形部分中的槽增强层状表层之间的编织。 还提供了具有均匀整体表皮的模具和蜂窝体。

    EXTRUSION DIES
    5.
    发明申请
    EXTRUSION DIES 审中-公开

    公开(公告)号:WO2019125830A1

    公开(公告)日:2019-06-27

    申请号:PCT/US2018/065005

    申请日:2018-12-11

    Abstract: A honeycomb extrusion die body (401) including inlet (414) and exit (402) faces, and a plurality of pins (406) on the exit face (402) defining a matrix of intersecting wide slots (425) and narrow slots (427). The wide slots (425) have an exit width (W1) greater than an exit width (W2) of the narrow slots (427). The die body (401) further includes feedholes (422) at the inlet face (414) and intersecting with inlet portions (416) to the wide slots (425) and/or the narrow slots (427). Some of the pins (406) defining the wide slots (425) include a first surface indentation feature (430) that is (i) located between the inlet portion (416) and the wide slot exit and (ii) spaced away from the wide slot exit. Some of the pins (406) defining the narrow slots (427) include a second surface indentation feature (434) that is (i) located between the inlet portion and the narrow slot exit and (ii) spaced away from the narrow slot exit.

    HONEYCOMB EXTRUSION APPARATUS AND METHODS
    6.
    发明申请
    HONEYCOMB EXTRUSION APPARATUS AND METHODS 审中-公开
    蜂窝电话挤出装置和方法

    公开(公告)号:WO2013169632A1

    公开(公告)日:2013-11-14

    申请号:PCT/US2013/039657

    申请日:2013-05-06

    Abstract: A honeycomb extrusion apparatus includes first (323) and second (327) vanes with respective first (325) and second (329) face portions. First (Wl) and second (W2) axial widths of a circumferential feed area (321) are respectively defined between the first (325) and second (329) face portions and the outer feed surface (311) of the die body (201). In further examples, methods include the steps of selectively adjusting the first axial width (Wl) and the second axial width (W2) of the circumferential feed area (321) by respectively adjusting the first (323) and second (327) vane relative to the mask (225). In further examples, a honeycomb extrusion apparatus includes a plurality of mask segments (1209a, 1209b) that each includes an inner peripheral surface portion (1501). Each of the plurality of mask segments (1209a, 1209b) are independently adjustable along a respective radial axis (1503).

    Abstract translation: 蜂窝挤出装置包括具有相应的第一(325)和第二(329)面部的第一(323)和第二(327)叶片。 圆周进给区域(321)的第一(W1)和第二(W2)轴向宽度分别限定在模具本体(201)的第一(325)和第二(329)面部分和外部进给表面(311)之间, 。 在另外的实施例中,方法包括通过分别相对于第一(323)和第二(327)叶片相对地调节第一(323)和第二(327)叶片来选择性地调节圆周进给区域(321)的第一轴向宽度(W1)和第二轴向宽度(W2) 面罩(225)。 在另外的实施例中,蜂窝挤出装置包括多个掩模段(1209a,1209b),每个掩模段包括内周面部分(1501)。 多个掩模段(1209a,1209b)中的每一个可沿相应的径向轴线(1503)独立地调节。

    HONEYCOMB EXTRUSION DIES AND FORMING METHODS

    公开(公告)号:WO2020236474A1

    公开(公告)日:2020-11-26

    申请号:PCT/US2020/032611

    申请日:2020-05-13

    Abstract: A honeycomb extrusion die (120) includes a die body (342) including an inlet face (315) and an outlet face (341). A plurality of pins (330) extend from the die body (342), wherein the pins (330) are arranged to define primary (312P) and secondary slots (312S). Primary slots (312P) include primary slot inlets (320P) and primary slot outlets (3120) and the secondary slots (312S) include secondary slot inlets (312SI) and secondary slot outlets (312SO). Feedholes (317) extend within the die body (342), the feedholes (317) including feedhole outlets (319), wherein the feedhole outlets (319) intersect only with the primary slot inlets (320P). First surface indentation features (345) extend into side surfaces (332) of the plurality of pins (330) defining the primary slots (312P). The first surface indentation features (345) are spaced from the primary slot outlets (3120). The secondary slots (312S) are devoid of surface indentation features. Other die bodies, extruders, and methods are disclosed.

    EXTRUSION DIES WITH ZONED COATINGS, METHODS OF FABRICATING SUCH DIES, AND METHODS OF MANUFACTURING CERAMIC ARTICLES

    公开(公告)号:WO2022115348A1

    公开(公告)日:2022-06-02

    申请号:PCT/US2021/060252

    申请日:2021-11-22

    Abstract: An extrusion die (16) including a plurality of pins (38) having side surfaces defining an intersecting array of slots (30) extending axially into the die (16) from a discharge face (34) of the die (16). A plurality of feedholes (28) extend axially from an inlet face (32) of the die (16) opposite to the discharge face (34). The feedholes (28) connect with the slots (30) at intersections (35) within the die (16) to create a flow path from the inlet face (32) to the discharge face (34). A first coating (42) is on at least a portion of the feedholes (28) in a first zone (46) extending over a first axial length of the flow path. A second coating (44) that is different than the first coating (42) is on at least a portion of the side surfaces (37) of the pins (38) in a second zone (48) extending over a second axial length of the flow path. Methods of fabricating an extrusion die (16) and manufacturing a ceramic article (100), such as a honeycomb body, are also disclosed.

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