公开(公告)号：US10654120B2

公开(公告)日：2020-05-19

申请号：US15373895

申请日：2016-12-09

Applicant: GENERAL ELECTRIC COMPANY

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

IPC: B23K1/00 ,  B23K1/20 ,  B23K101/00 ,  B23K101/06

Abstract: A method includes heating a brazing material in a braze chamber of a first component to a braze temperature to melt the brazing material. The brazing material flows from the braze chamber, through at least one internal channel of the first component, and into a braze gap between the first component and a second component to braze the first component to the second component. A brazed article includes a first component having a braze chamber and at least one internal channel extending from the braze chamber to an external surface, a second component having at least one braze surface separated from the external surface of the first component by a braze gap, and a braze material in the braze gap. A braze assembly includes a first component, a second component, and a brazing material in the braze chamber.

公开(公告)号：US10571126B2

公开(公告)日：2020-02-25

申请号：US15427831

申请日：2017-02-08

Applicant: GENERAL ELECTRIC COMPANY

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

IPC: F23R3/32 ,  F23R3/28 ,  B01F13/00 ,  B23K1/00 ,  B23K1/19 ,  F23D14/64 ,  F23R3/04 ,  B23K101/00 ,  B23K103/04

Abstract: Manufactured articles, and methods of manufacturing enhanced wear protected components and articles. More particularly, wear protected components and articles, such as combustor components of turbine engines, and even more particularly enhanced wear protected micromixer tubes and assemblies thereof with one or more micromixer plates, the micromixer tubes having wear protection for enhanced performance and reduced wear related failure. Methods including surface treatment to enhance wear, including vacuum braze application of coatings to enhance surface hardness for wear benefits.

公开(公告)号：US10562210B2

公开(公告)日：2020-02-18

申请号：US15465726

申请日：2017-03-22

Applicant: General Electric Company

Inventor： Jason Robert Parolini ,  Matthew Troy Hafner ,  James Joseph Murray ,  Srikanth Chandrudu Kottilingam ,  Canan Uslu Hardwicke ,  John McConnell Delvaux

IPC: B29C70/00 ,  B29C35/02 ,  C04B35/80 ,  B32B18/00 ,  B29C70/54 ,  B29C33/38 ,  C04B35/626 ,  C04B35/628 ,  C04B35/657 ,  F01D5/28 ,  B29L31/00

Abstract: The present disclosure is directed to a method for forming a passage in a composite component. The method includes forming a cavity in a fiber preform. The cavity forms a portion of the passage. The method also includes inserting a core into the cavity and placing one or more fiber plies onto the fiber preform to form a fiber preform assembly. The method further includes thermally processing the fiber preform assembly and densifying the fiber preform assembly to form the composite component. The method also includes removing the core from the composite component.

公开(公告)号：US10480332B2

公开(公告)日：2019-11-19

申请号：US15491114

申请日：2017-04-19

Applicant: General Electric Company

Inventor： Srikanth Chandrudu Kottilingam ,  Kenneth B. Potter

IPC: F01D5/28 ,  F01D5/06 ,  B23P15/06

Abstract: A method of joining a first work piece and a second workpiece. The first and second workpieces may be rotor wheels of a rotor for a turbomachine. At least one of the workpieces includes an oxide dispersion strengthened alloy material and the first and second work pieces may be joined by welding a cladding on at least one of the workpieces to the other of the workpieces, without welding a substrate of the at least one workpiece which includes an oxide dispersion strengthened alloy material.

公开(公告)号：US10265806B2

公开(公告)日：2019-04-23

申请号：US15661360

申请日：2017-07-27

Applicant: General Electric Company

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

IPC: B23K31/02 ,  B23K35/02 ,  B23K1/00 ,  B23K35/30 ,  F01D5/18 ,  F01D9/02 ,  F01D25/12

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：US10265792B2

公开(公告)日：2019-04-23

申请号：US15806565

申请日：2017-11-08

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Yan Cui ,  Srikanth Chandrudu Kottilingam ,  Brian Lee Tollison ,  Timothy Neal Pletcher ,  Richard Ryan Pilson

IPC: B23K1/00 ,  B22F7/06 ,  B22F5/04 ,  B23F5/00 ,  B23K9/04 ,  B23K15/00 ,  B23K35/36 ,  B23K35/02 ,  B32B15/01 ,  C23C30/00 ,  B22F5/00 ,  B23K10/02 ,  B23K26/34 ,  F01D5/14 ,  F01D5/28 ,  B22F7/04 ,  B23K101/00

Abstract: A hybrid article is disclosed including a coating disposed on and circumscribing the lateral surface of a core having a core material. The coating includes about 35% to about 95% of a first metallic material having a first melting point, and about 5% to about 65% of a second metallic material having a second melting point lower than the first melting point. The coating is sinter-bonded to the core. A method for forming the hybrid article is disclosed including disposing the core in a die, introducing a slurry having the metallic materials into a gap between the lateral surface and the die, and sintering the slurry, forming the coating. A method for closing an aperture of an article is disclosed including inserting the hybrid article into the aperture, and brazing the hybrid article to the article, welding the aperture with the hybrid article serving as weld filler, or both.

公开(公告)号：US10227878B2

公开(公告)日：2019-03-12

申请号：US15065968

申请日：2016-03-10

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Srikanth Chandrudu Kottilingam ,  Yan Cui ,  Brian Lee Tollison ,  David Edward Schick

IPC: B29C33/42 ,  F01D5/20 ,  F01D5/14 ,  F01D5/18 ,  B29L31/08

Abstract: An article and method of forming an article are provided. The article includes a side wall at least partially defining an inner region and an outer region of the article, the side wall having a first end and a second end, an end wall formed proximal to the first end of the side wall, the end wall defining a tip portion of the article, and a cooling channel formed in the side wall, within the tip portion. The method of forming an article includes positioning a first sheet of material having a channel formed therein over a first end of a body, positioning at least one additional sheet of material over the first sheet of material, and securing the first sheet of material and the at least one additional sheet of material to the body to form a tip portion including a cooling channel formed therein.

公开(公告)号：US20190047217A1

公开(公告)日：2019-02-14

申请号：US15672729

申请日：2017-08-09

Applicant: General Electric Company

Inventor： David Edward Schick ,  Srikanth Chandrudu Kottilingam ,  Steven John Barnell

IPC: B29C64/209 ,  B33Y30/00 ,  B22F3/105 ,  B28B1/00 ,  B29C64/268 ,  B29C64/245

Abstract: A nozzle has a main body having an input side and an output side, a central region and two opposing end regions. A plurality of linearly arranged apertures extend from the input side to the output side, and each of the apertures has a respective opening. At least one opening in the central region is smaller than at least one opening in the end regions.

公开(公告)号：US10126119B2

公开(公告)日：2018-11-13

申请号：US15407595

申请日：2017-01-17

Applicant: General Electric Company

Inventor： Brian Lee Tollison ,  Srikanth Chandrudu Kottilingam ,  Yan Cui ,  Bryan Joseph Germann

IPC: G01B11/16 ,  G01M15/14

Abstract: A method of forming a passive strain indicator on a preexisting component includes directly depositing a plurality of fiducial markers on a portion of the outer surface of the preexisting component, the fiducial markers including a material that is compatible with the material of the outer surface. A method of evaluating a component includes initially scanning a plurality of fiducial markers on a portion of an outer surface of the component, subjecting the component to at least one duty cycle, subsequently scanning the plurality of fiducial markers after the at least one duty cycle, measuring a displacement of the plurality of fiducial markers by comparing the subsequent scan to the initial scan, and determining a remaining usable life of the component by looking up in a database a predetermined value of the remaining usable life of the component corresponding to the measured displacement of the plurality of fiducial markers.

公开(公告)号：US10052724B2

公开(公告)日：2018-08-21

申请号：US15058342

申请日：2016-03-02

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Dheepa Srinivasan ,  Dayananda Narayana ,  Surinder Singh Pabla ,  Srikanth Chandrudu Kottilingam

IPC: B23K31/02 ,  B23K35/30 ,  B23K1/00 ,  B23K35/02 ,  C22C19/05 ,  C22C19/07 ,  C22C30/00 ,  C23C28/00 ,  F01D5/28

CPC classification number: B23K35/304 ,  B23K1/0018 ,  B23K1/19 ,  B23K35/025 ,  B23K35/3046 ,  B23K2101/001 ,  B23K2103/26 ,  C22C19/05 ,  C22C19/058 ,  C22C19/07 ,  C22C30/00 ,  C23C28/00 ,  F01D5/005 ,  F01D5/20 ,  F01D5/288 ,  F05D2230/237 ,  F05D2230/31

Abstract: A braze composition, brazing process, and brazed article are disclosed. The braze composition includes a MCrAlY alloy at a concentration, by weight, of between 50% and 70%, where M is selected from the group consisting of nickel, cobalt, iron, alloys thereof, and combinations thereof, and a nickel-based alloy at a concentration, by weight, of between 30% and 50%. The brazing process includes forming a braze paste, brazing the braze paste to a portion of a component, and shaping the braze paste to form a brazed article. The brazed article includes a component and a braze composition brazed to the component, the braze composition including a MCrAlY alloy at a concentration, by weight, of between 50% and 70%, where M is selected from the group consisting of nickel, cobalt, iron, alloys thereof, and combinations thereof, and a nickel-based alloy at a concentration, by weight, of between 30% and 50%.