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    HONEYCOMB EXTRUSION DIES AND METHODS OF USING AND MAKING SAME
    1.
    发明公开
    HONEYCOMB EXTRUSION DIES AND METHODS OF USING AND MAKING SAME 审中-公开

    公开(公告)号：US20240190043A1

    公开(公告)日：2024-06-13

    申请号：US18288044

    申请日：2022-05-18

    申请人： CORNING INCORPORATED

    发明人： Michael James Lehman ,  Min Shen

    IPC分类号： B28B3/26

    CPC分类号： B28B3/269

    摘要： A honeycomb extrusion die (120) with improved wear properties. Extrusion die has a die body (121) with inlet (122) and exit (123) faces, feedholes (124) with feedhole entrances (124A) and outlets (124B), and a plurality of die pins (126) having side surfaces (128) configured to define a matrix of intersecting slots (130). At least some of the intersecting slots and die pins define a slot structure with divots (132) formed in the side surfaces of the die pins between the feedholes and the exit face, entrance slot portions between the feedhole outlets and the divots, the entrance slot portions having an entrance slot width WA, and exit slot portions between the divots and the exit face, the exit slot portions having an exit slot width WB, wherein WA>WB over an entire slot length. Methods of manufacturing honeycomb structures using the honeycomb extrusion dies and of fabricating the extrusion dies are provided as are other aspects.

    Extrusion dies
    4.
    发明授权
    Extrusion dies 有权

    公开(公告)号：US11534937B2

    公开(公告)日：2022-12-27

    申请号：US16955137

    申请日：2018-12-11

    申请人： CORNING INCORPORATED

    发明人： Thomas William Brew ,  Yuehao Li ,  Kenneth Charles Sariego ,  Min Shen

    IPC分类号： B28B3/26 ,  B29C48/11 ,  B29C48/30 ,  B29C48/32 ,  B29C48/345 ,  B29C48/00 ,  B01D46/24 ,  B01D53/94 ,  B01J35/04 ,  B28B3/20 ,  F01N3/28

    摘要： 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 DIES AND FORMING METHODS
    5.
    发明申请
    HONEYCOMB EXTRUSION DIES AND FORMING METHODS 有权

    公开(公告)号：US20220314489A1

    公开(公告)日：2022-10-06

    申请号：US17608765

    申请日：2020-05-13

    申请人： CORNING INCORPORATED

    发明人： Thomas William Brew ,  Thomas Mark Dubots ,  Kenneth Charles Sariego ,  Min Shen

    IPC分类号： B28B3/26

    摘要： 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 for honeycomb body
    6.
    发明授权
    Extrusion dies for honeycomb body 有权

    公开(公告)号：US11292152B2

    公开(公告)日：2022-04-05

    申请号：US15776187

    申请日：2016-11-18

    申请人： Corning Incorporated

    发明人： Thomas William Brew ,  Tushar Gulati ,  Lee James Parks ,  Min Shen

    IPC分类号： B29C48/11 ,  B29C48/32 ,  B28B3/26 ,  B29L31/60

    摘要： An extrusion die (100) for a honeycomb body, the die (100) including: an input surface (102); an opposing output surface (104); feed holes (108) extending from the input surface (102) toward the output surface (104); discharge slots (106) having a slot width (SW) and a slot length (SL), and extending from the output surface (104) toward the input surface (102); and a plenum (130) fluidly connecting the feed holes (108) and the discharge slots (106). The plenum (130) may include chambers (132) connected to the feed holes (108) and including tapered outlets (134) connected to the discharge slots (106). The plenum (133) may include first chambers (132A) connected to the feed holes (108) and including first tapered outlets (134A), and second chambers (132B) connected to the first outlets and including second tapered outlets (134B) connected to the discharge slots (106).

    HONEYCOMB EXTRUSION DIES AND FORMING METHODS
    7.
    发明申请
    HONEYCOMB EXTRUSION DIES AND FORMING METHODS 有权

    公开(公告)号：US20210308928A1

    公开(公告)日：2021-10-07

    申请号：US17058397

    申请日：2019-05-30

    申请人： CORNING INCORPORATED

    发明人： Thomas William Brew ,  Yuehao Li ,  Min Shen

    IPC分类号： B29C48/11 ,  B29C48/30 ,  B28B3/26 ,  B23P15/24

    摘要： 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 san 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.

    EXTRUSION DIES WITH ZONED COATINGS, METHODS OF FABRICATING SUCH DIES, AND METHODS OF MANUFACTURING CERAMIC ARTICLES
    10.
    发明公开
    EXTRUSION DIES WITH ZONED COATINGS, METHODS OF FABRICATING SUCH DIES, AND METHODS OF MANUFACTURING CERAMIC ARTICLES 审中-公开

    公开(公告)号：US20230398716A1

    公开(公告)日：2023-12-14

    申请号：US18032085

    申请日：2021-11-22

    申请人： CORNING INCORPORATED

    发明人： Thomas William Brew ,  Keith Norman Bubb ,  Ryan Joseph Grohsmeyer ,  Michael James Lehman ,  Kenneth Charles Sariego ,  Min Shen

    IPC分类号： B28B3/26

    CPC分类号： B28B3/269 ,  B28B2003/203

    摘要： 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.