公开(公告)号：US20180236731A1

公开(公告)日：2018-08-23

申请号：US15436344

申请日：2017-02-17

Applicant: General Electric Company

Inventor： Arunkumar Natarajan ,  Carlos Bonilla Gonzalez ,  Vadim Bromberg ,  Jeffrey Jon Schoonover ,  Srikanth Chandrudu Kottilingam ,  Prabhjot Singh ,  Kwok Pong Chan

IPC: B29C67/00 ,  B28B1/00 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  B22F3/00 ,  B28B11/24 ,  B22F3/10

CPC classification number: B22F3/1021 ,  B22F3/008 ,  B22F2999/00 ,  B28B1/001 ,  B28B11/243 ,  B29C64/153 ,  B29C64/40 ,  B29K2505/08 ,  B29K2509/02 ,  B29L2031/7504 ,  B33Y10/00 ,  B33Y40/00 ,  B22F5/10 ,  B22F2003/1058

Abstract: A method of binder jet printing a part includes depositing a layer of a powder on a working surface and selectively printing a binder solution comprising a binder into the layer of powder in a first pattern to generate a printed layer. The pattern is representative of a structure of a layer of the part. The method also includes selectively printing a channel support agent solution comprising a channel support agent into the layer of powder to generate a green body. The channel support agent is selectively printed in a second pattern representative of an internal channel of the part. The method further includes heating the green body part above a first temperature to remove the binder and generate a brown body part and heating the brown body part above a second temperature to sinter the powder to generate the part having the internal channel generated from removal of the channel support agent.

公开(公告)号：US20180209781A1

公开(公告)日：2018-07-26

申请号：US15412110

申请日：2017-01-23

Applicant: General Electric Company

Inventor： Srikanth Chandrudu Kottilingam ,  William F. Ranson ,  Brian Lee Tollison ,  Yan Cui ,  Christine K. Applegren

IPC: G01B11/16 ,  G01M15/14

CPC classification number: G01B11/16 ,  G01B11/00 ,  G01B11/24 ,  G01B21/04 ,  G01M15/14

Abstract: A method of making a component with an integral passive strain indicator includes forming the component of a single uniform material, the component comprising an outer surface and an internal volume. The method also includes forming a plurality of fiducial markers of the single uniform material on a portion of the outer surface during formation of the component, the portion of the outer surface comprising an analysis region on the outer surface of the component.

公开(公告)号：US20180209283A1

公开(公告)日：2018-07-26

申请号：US15412945

申请日：2017-01-23

Applicant: General Electric Company

Inventor： Srikanth Chandrudu Kottilingam ,  David Edward Schick ,  Jon Conrad Schaeffer ,  Steven J. Barnell ,  Brian Lee Tollison ,  Yan Cui

IPC: F01D9/04

CPC classification number: F01D9/041 ,  B22F3/008 ,  B22F3/1055 ,  B22F3/24 ,  B22F5/009 ,  B22F2003/242 ,  B22F2003/247 ,  B22F2003/248 ,  B22F2207/20 ,  B22F2998/00 ,  B23P6/005 ,  B23P15/04 ,  B33Y10/00 ,  B33Y80/00 ,  B33Y99/00 ,  F01D5/005 ,  F01D9/042 ,  F05D2230/20 ,  F05D2230/21 ,  F05D2230/22 ,  F05D2230/23 ,  F05D2230/31 ,  F05D2230/51 ,  F05D2230/60 ,  F05D2230/64 ,  F05D2230/70 ,  F05D2230/80 ,  Y02P10/295 ,  Y02T50/672

Abstract: A multi-piece part includes multiple pieces fabricated via different types of fabrication processes, wherein the multiple parts are configured to be coupled to one another to form the assembly. At least one of the multiple parts is fabricated via an additive manufacturing method. The multi-piece part also includes a holder assembly that couples and holds together the multiple pieces of the multi-piece part, wherein the holder assembly comprises a reversible, mechanical-type coupling.

公开(公告)号：US20180100437A1

公开(公告)日：2018-04-12

申请号：US15289242

申请日：2016-10-10

Applicant: General Electric Company

Inventor： Richard Martin DiCintio ,  Srikanth Chandrudu Kottilingam

IPC: F02C7/264 ,  F23R3/00

CPC classification number: F02C7/264 ,  F05D2220/32 ,  F05D2240/35 ,  F05D2250/185 ,  F05D2250/281 ,  F05D2260/204 ,  F23R3/002 ,  F23R2900/00018 ,  F23R2900/03042

Abstract: An igniter assembly and a combustor including an igniter assembly is disclosed herein. The igniter assembly comprises an igniter housing. The igniter housing includes an outer surface, a first end wall and a second end wall. The igniter assembly also includes a preformed cover plate having an inner surface that is attached to the outer surface of the igniter housing. A plurality of micro-cooling channels is formed within at least one of the inner surface of the preformed cover plate and the outer surface of the igniter housing.

公开(公告)号：US20180100436A1

公开(公告)日：2018-04-12

申请号：US15289247

申请日：2016-10-10

Applicant: General Electric Company

Inventor： Richard Martin DiCintio ,  Srikanth Chandrudu Kottilingam

IPC: F02C7/12 ,  F23R3/00

Abstract: An aft frame for a duct of a combustor includes a rail or radial projection that extends circumferentially around the aft frame and that defines an outer surface of the aft frame. A preformed cover plate having an inner surface is attached to the outer surface of the aft frame. A plurality of micro-cooling channels is formed within at least one of the inner surface of the preformed cover plate and the outer surface of the aft frame. The preformed cover plate extends across the plurality of micro-cooling channels.

公开(公告)号：US09938899B2

公开(公告)日：2018-04-10

申请号：US14739791

申请日：2015-06-15

Applicant: General Electric Company

Inventor： Carlos Miguel Miranda ,  Srikanth Chandrudu Kottilingam ,  Benjamin Paul Lacy

IPC: F01D5/18 ,  F02C7/18

CPC classification number: F02C7/18 ,  F01D5/186 ,  F01D5/187 ,  F05D2230/21 ,  F05D2260/202 ,  Y02T50/672 ,  Y02T50/676

Abstract: A hot gas path component includes a substrate having an outer surface and an inner surface. The inner surface of the substrate defines at least one interior space. At least a portion of the outer surface of the substrate includes a recess formed therein. The recess includes a bottom surface and a groove extending at least partially along the bottom surface of the recess. A cover is disposed within the recess and covers at least a portion of the groove. The groove is configured to channel a cooling fluid therethrough to cool the cover.

公开(公告)号：US20180093354A1

公开(公告)日：2018-04-05

申请号：US15661360

申请日：2017-07-27

Applicant: General Electric Company

Inventor： Yan Cui ,  Srikanth Chandrudu Kottilingam ,  Brian Lee Tollison

IPC: B23K35/02 ,  B23K35/30 ,  B23K1/00

CPC classification number: B23K35/0233 ,  B23K1/00 ,  B23K35/025 ,  B23K35/3033 ,  B23K35/304 ,  F01D5/18 ,  F01D9/02 ,  F01D25/12 ,  F05D2230/237 ,  F05D2230/60 ,  F05D2230/90

Abstract: A system for sealing an internal passage of a component includes a closure element positioned within the internal passage, and a joint material coupling the closure element to at least one passage wall that defines the internal passage. The system also includes a flexible braze element positioned proximate the closure element, the joint material, and the at least one passage wall.

公开(公告)号：US09931818B1

公开(公告)日：2018-04-03

申请号：US15479872

申请日：2017-04-05

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Jason Robert Parolini ,  Jon Conrad Schaeffer ,  Arthur S. Peck ,  Srikanth Chandrudu Kottilingam ,  Canan Uslu Hardwicke

IPC: B29C65/00 ,  B29C53/82 ,  C03B29/00 ,  C04B35/64 ,  B32B18/00 ,  B32B7/04 ,  B32B5/08 ,  B32B37/12 ,  B32B38/00 ,  C04B35/573 ,  C04B35/532 ,  C04B35/528 ,  C04B35/571 ,  C04B35/524 ,  C04B35/591 ,  C04B35/622

CPC classification number: B32B18/00 ,  B32B5/08 ,  B32B7/04 ,  B32B2305/10 ,  B32B2313/04 ,  B32B2315/02 ,  B32B2603/00 ,  C04B35/524 ,  C04B35/528 ,  C04B35/532 ,  C04B35/571 ,  C04B35/573 ,  C04B35/591 ,  C04B35/62286 ,  C04B35/6267 ,  C04B35/806 ,  C04B2235/48 ,  C04B2235/5224 ,  C04B2235/5228 ,  C04B2235/5236 ,  C04B2235/524 ,  C04B2235/5244 ,  C04B2235/5248 ,  C04B2235/616 ,  C04B2237/38 ,  C04B2237/385 ,  C04B2237/58 ,  F01D5/284

Abstract: A method for forming a CMC article is disclosed, including forming a CMC precursor ply assembly. Forming the CMC precursor ply assembly includes laying up a plurality of CMC precursor plies and entraining a melt infiltration agent to form an entrained agent supply. Each of the plurality of CMC precursor plies includes a matrix precursor and a plurality of ceramic fibers. The plurality of CMC precursor plies and the entrained agent supply are arranged to form the CMC precursor ply assembly, which includes an article conformation. The method further includes carbonizing the CMC precursor ply assembly, infusing the melt infiltration agent from the entrained agent supply into the plurality of CMC precursor plies, and densifying the CMC precursor ply assembly with the melt infiltration agent to form the CMC article.

公开(公告)号：US09931814B2

公开(公告)日：2018-04-03

申请号：US14496828

申请日：2014-09-25

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Benjamin Paul Lacy ,  David Edward Schick ,  Srikanth Chandrudu Kottilingam

IPC: B22F3/105 ,  B32B15/01 ,  B22F3/24 ,  B22F7/08 ,  B23K26/34 ,  B23K26/00 ,  B23K35/30 ,  B23K35/02 ,  B33Y10/00 ,  B33Y80/00

CPC classification number: B32B15/01 ,  B22F3/1055 ,  B22F3/24 ,  B22F5/009 ,  B22F7/08 ,  B22F2003/248 ,  B22F2998/10 ,  B23K26/02 ,  B23K26/144 ,  B23K26/342 ,  B23K26/354 ,  B23K35/0238 ,  B23K35/3046 ,  B23K35/3053 ,  B23K35/308 ,  B23K35/3086 ,  B23K2103/08 ,  B33Y10/00 ,  B33Y80/00 ,  Y02P10/295 ,  B22F3/15

Abstract: An article and a method for making shaped cooling holes in an article are provided. The method includes the steps of providing a metal alloy powder; forming an initial layer with the metal alloy powder, the initial layer having a preselected thickness and a preselected shape, the preselected shape including at least one aperture; sequentially forming an additional layer over the initial layer with the metal alloy powder, the additional layer having a second preselected thickness and a second preselected shape, the second preselected shape including at least one aperture corresponding to the at least one aperture in the initial layer; and joining the additional layer to the initial layer, forming a structure having a predetermined thickness, a predetermined shape, and at least one aperture having a predetermined profile. The structure is attached to a substrate to make the article.

公开(公告)号：US20180002785A1

公开(公告)日：2018-01-04

申请号：US15197902

申请日：2016-06-30

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Laura Cerully Dial ,  Srikanth Chandrudu Kottilingam

IPC: C22C19/05 ,  B33Y70/00 ,  B23K26/342 ,  B33Y10/00

CPC classification number: C22C19/057 ,  B23K26/144 ,  B23K26/342 ,  B23K2101/001 ,  B23K2103/26 ,  B33Y10/00 ,  B33Y70/00 ,  C22C19/056

Abstract: Additive manufacturing methods, and articles made using additive manufacturing methods, are described herein. One embodiment is an article that comprises a hafnium-bearing superalloy. The superalloy includes at least about 50 weight percent nickel, from about 0.015 weight percent to about 0.06 weight percent carbon, and up to about 0.8 weight percent hafnium. The article further includes a plurality of primary carbide phase particulates disposed within the superalloy; the plurality has a median size less than about 1 micrometer. A method includes melting and solidifying particulates of a metal powder feedstock to build an intermediate article comprising a series of layers of solidified material. The feedstock includes the above-described superalloy composition. The method further includes heating the intermediate article to a temperature of at least about 950 degrees Celsius to form a processed article. The processed article further includes a plurality of primary carbide phase particulates disposed within the solidified material, the plurality of particulates having a median size less than about 1 micrometer.