High isostatic strength honeycomb structures and extrusion dies therefor

    公开(公告)号:US11312662B2

    公开(公告)日:2022-04-26

    申请号:US17052682

    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 (2200) 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 (2200) of two of the outlet channels (108o). A first diagonal length (D1) 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.

    HIGH ISOSTATIC STRENGTH HONEYCOMB STRUCTURES AND EXTRUSION DIES THEREFOR

    公开(公告)号:US20210238104A1

    公开(公告)日:2021-08-05

    申请号:US17052682

    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 (2200) 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 (2200) of two of the outlet channels (108o). A first diagonal length (D1) 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.

    HONEYCOMB EXTRUSION APPARATUS AND METHODS
    5.
    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:US20150037450A1

    公开(公告)日:2015-02-05

    申请号:US14518488

    申请日:2014-10-20

    Abstract: A honeycomb extrusion apparatus includes first and second vanes with respective first and second face portions. First and second axial widths of a circumferential feed area are respectively defined between the first and second face portions and the outer feed surface of the die body. In further examples, methods include the steps of selectively adjusting the first axial width and the second axial width of the circumferential feed area by respectively adjusting the first and second vane relative to the mask. In further examples, a honeycomb extrusion apparatus includes a plurality of mask segments that each includes an inner peripheral surface portion. Each of the plurality of mask segments are independently adjustable along a respective radial axis.

    Abstract translation: 蜂窝挤出装置包括具有相应的第一和第二面部的第一和第二叶片。 周向进给区域的第一和第二轴向宽度分别限定在模具主体的第一和第二面部分和外部进给表面之间。 在另外的实施例中,方法包括通过相对于掩模分别调节第一和第二叶片来选择性地调节圆周进给区域的第一轴向宽度和第二轴向宽度的步骤。 在另外的实施例中,蜂窝挤出装置包括多个掩模段,每个掩模段包括内周表面部分。 多个掩模段中的每一个可沿相应的径向轴线独立地调节。

    Honeycomb extrusion dies and forming methods

    公开(公告)号:US12109727B2

    公开(公告)日:2024-10-08

    申请号:US17608765

    申请日:2020-05-13

    CPC classification number: B28B3/269

    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.

    Honeycomb extrusion dies and forming methods

    公开(公告)号:US11752679B2

    公开(公告)日:2023-09-12

    申请号:US17058397

    申请日:2019-05-30

    Abstract: A honeycomb extrusion die (120) includes a die body (302) including an inlet face (306) and an exit face. The die body (302) has slot inlets (309) and a plurality of pins (320, 500) disposed between the slot inlets (309) and the exit face. The plurality of pins (320, 500) include side surfaces (322, 500B) configured to define a matrix of intersecting slots (324), wherein the matrix of intersecting slots (324) has slot exit (509) widths at the exit face. Divots (526) extend into a plurality of the side surfaces (322, 500B) between the slot inlets (309) and the exit face. Each individual divot (526) has a divot depth (D55) extending into a side surface (500A, 500B, 502A, 502B) of the side surfaces (322, 500B). A ratio between a slot exit width (W53) W53 of an individual slot (324) and the divot depth (D55) of an individual divot (526) extending into a side surface (500A, 500B, 502A, 502B) of the individual slot (324) is greater than 1.2. Methods of forming honeycomb bodies with honeycomb structures are provided, as are other aspects.

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

    公开(公告)号:US20220056579A1

    公开(公告)日:2022-02-24

    申请号:US17414569

    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.

    SKIN-FORMING DIE AND HONEYCOMB EXTRUSION DIE

    公开(公告)号:US20220001576A1

    公开(公告)日:2022-01-06

    申请号:US17293716

    申请日:2019-11-06

    Abstract: A skin-forming die includes an inlet face; an outlet face; one or more slots, each of the one or more slots comprising one or more slot inlets extending between the one or more slot inlets and the outlet face; a plurality of feedholes extending between the inlet face and the one or more slot inlets; and a central opening configured to receive a matrix die. Extrusion die apparatus and methods of manufacturing honeycomb bodies are also disclosed.

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