公开(公告)号：WO2020159685A1

公开(公告)日：2020-08-06

申请号：PCT/US2020/012845

申请日：2020-01-09

Applicant: CORNING INCORPORATED

Inventor： CHATLANI, Shyam Lekhraj ,  GROHSMEYER, Ryan Joseph ,  MALARKEY, Christopher John ,  RECTOR, John Charles

IPC: B28B3/26 ,  B28B17/00 ,  B29C48/11 ,  B29C48/25 ,  B28B7/34

Abstract: Methods for extruding a ceramic-forming mixture through a honeycomb extrusion die (10), methods for forming a green honeycomb extrudate from a ceramic-forming mixture, methods of preparation of a honeycomb extrusion die (10) that extrudes a ceramic-forming mixture, and systems including a honeycomb extrusion die (10), ceramic-forming mixture, and abrasive flow media. The method of extruding a ceramic-forming mixture through a honeycomb extrusion die (10) includes conditioning the honeycomb extrusion die (10) by extruding an abrasive flow media through the slots (20) of the die (10) prior to extruding the ceramic-forming mixture through the slots (20) of the die (10). The abrasive flow media includes abrasive inorganic particles dispersed in a flowable carrier. The ceramic-forming mixture includes one or more types of inorganic ceramic-forming particles. The abrasive inorganic particles in the flowable carrier have a particle size distribution that corresponds to that of at least one type of the ceramic-forming particles in the ceramic-forming mixture.

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

Applicant: CORNING INCORPORATED

Inventor： BREW, Thomas William ,  BUBB, Keith Norman ,  GROHSMEYER, Ryan Joseph ,  LEHMAN, Michael James ,  SARIEGO, Kenneth Charles ,  SHEN, Min

IPC: B28B3/26 ,  B23P15/24

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.

公开(公告)号：WO2020237012A1

公开(公告)日：2020-11-26

申请号：PCT/US2020/033934

申请日：2020-05-21

Applicant: CORNING INCORPORATED

Inventor： ANTESBERGER, Timothy Eugene ,  BOOKBINDER, Dana Craig ,  COOTS, Dana Eugene ,  FARZADFAR, Seyed Amir ,  FORENZ, Dominick John ,  GROHSMEYER, Ryan Joseph ,  HUMPHREY, Mark Lee ,  KHAYAT, Zakariya Radwan ,  MILLER, Kenneth Richard ,  PETERSON, Richard Curwood ,  RECTOR, John Charles

IPC: B23H7/24 ,  B22F3/105 ,  B22F3/24 ,  B22F5/10 ,  B29C48/00 ,  B33Y10/00 ,  B33Y80/00 ,  C22C1/04

Abstract: Methods for forming an electrode for use in forming a honeycomb extrusion die. The method includes forming, by means of an additive manufacturing process, an electrode includes a base having a web extending from the base. The web defines a matrix of cellular openings. The method further includes forming a secondary electrode having a plurality of pins. The plurality of pins are shaped and arranged so as to mate with the matrix of cellular openings defined by the web of the electrode. The method further includes machining the electrode using the secondary electrode to smooth surfaces of the electrode formed by the additive manufacturing process.