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%.

公开(公告)号：US11090770B2

公开(公告)日：2021-08-17

申请号：US16302490

申请日：2016-05-18

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Dheepa Srinivasan ,  Dayananda Narayana ,  Kaustubh Krishna Bawane ,  Joydeep Pal ,  Mariusz Strzyzewski ,  Tomasz Szewczyk ,  David Edward Schick

IPC: B23P6/00 ,  B22F5/04 ,  F01D5/00 ,  F01D5/18 ,  B23K26/342 ,  B22F7/06 ,  B22F7/08 ,  B23K26/14 ,  B23K26/144 ,  B22F10/20 ,  B23K101/00 ,  B23K103/18

Abstract: A component and method of forming a component are disclosed. The component includes a cast alloy section and an additive manufacturing section secured to the cast alloy section. Both the cast alloy section and the additive manufacturing section form at least a portion of an outer surface of the component. The method of forming a component includes removing a portion of an existing component, the removing of the portion forming an open section in the existing component, forming an article through an additive manufacturing technique, the article having a shape and geometry arranged and disposed to fill the open section in the existing component, and securing the article within the open section of the existing component to form the component. Another method includes directly depositing a material, by an additive manufacturing technique, over a portion of the existing component.

公开(公告)号：US20180027190A1

公开(公告)日：2018-01-25

申请号：US15215632

申请日：2016-07-21

Applicant: General Electric Company

Inventor： Dheepa Srinivasan ,  Joel John Bosco ,  Debabrata Mukhopadhyay ,  Paul Stephen DiMascio

IPC: H04N5/33 ,  G06T7/00 ,  G01J5/10 ,  G01F1/688 ,  G01J5/00

CPC classification number: H04N5/33 ,  G01F1/688 ,  G01J5/0014 ,  G01J5/10 ,  G01J2005/0077 ,  G01N25/72 ,  G06T7/0004 ,  G06T2207/30164

Abstract: A system and method for thermal inspection of a component having at least one cooling hole is disclosed, that uses an evaporative membrane for direct evaporative cooling of an exhausted working fluid. A working fluid is supplied to at least one internal passage of a component that is configured to exhaust the working fluid from the internal passage sequentially through the cooling holes and the wetted evaporative membrane disposed in direct air-tight contact with the component. An imager captures a time series of images corresponding to a transient evaporative response of the exhausted working fluid to determine a plurality of temperature values for the exhausted working fluid after passage through the evaporative membrane. A processor circuit is configured to evaluate the transient evaporative response of the exhausted working fluid.

公开(公告)号：US11224915B2

公开(公告)日：2022-01-18

申请号：US15970101

申请日：2018-05-03

Applicant: General Electric Company

Inventor： Dheepa Srinivasan ,  Joydeep Pal ,  M. Raghunandan ,  Rohit Sen ,  Sridhar Balaram ,  Mohamed Aleem

IPC: B22F7/06 ,  B22F5/04 ,  B22F7/02 ,  B33Y80/00 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y40/00 ,  C22C1/04 ,  F01D5/28 ,  F01D5/00 ,  B23P6/00 ,  B22F7/08 ,  B22F10/20 ,  C22C19/07 ,  B33Y30/00 ,  B22F10/30

Abstract: A method for forming a secondary component from an original component having an original shape includes separating the original component into a parent component and a replaced portion, and forming a replacement coupon using an additive manufacturing system. The replacement coupon is shaped to substantially match the original shape of the replaced portion. The method further includes coupling the replacement coupon to the parent component to form the secondary component. The method also includes at least one of (i) removing the replacement coupon from a build plate of the additive manufacturing system prior to application of any heat treatment to the as-built replacement coupon, wherein the replacement coupon maintains a near-net original shape of the replaced portion after removal, and (ii) entering the secondary component into normal duty with no hot isostatic press treatment of the replacement coupon having been performed.

公开(公告)号：US11092019B2

公开(公告)日：2021-08-17

申请号：US16158297

申请日：2018-10-12

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Dheepa Srinivasan ,  Kishore Kancharala ,  Raghupatruni Prasad ,  Sujith S ,  Suresha SJ

IPC: B32B15/01 ,  F01D5/28

Abstract: A coated component and a method of preparing a coated component are provided. The method comprises providing a substrate; and applying a dual coating system to the substrate. The applying of the dual coating system includes applying a diffusion barrier coating; and applying a corrosion-resistant coating. The corrosion-resistant coating comprises a greater concentration of silicon and aluminum than the diffusion barrier coating, and the dual layer coating system includes an aluminide interdiffusion zone.

公开(公告)号：US10919119B2

公开(公告)日：2021-02-16

申请号：US16042355

申请日：2018-07-23

Applicant: General Electric Company

Inventor： Dheepa Srinivasan ,  Joydeep Pal ,  Debabrata Mukhopadhyay

IPC: B23P6/00 ,  B33Y10/00 ,  F01D5/00 ,  B23K26/342 ,  B22F3/105 ,  B22F5/00 ,  B22F5/04 ,  C22C1/04 ,  C22C33/02 ,  B22F7/06

Abstract: A method for repairing a component is disclosed. The method includes removing a portion originally including a plurality of cooling holes, of the component to form a cavity, forming by additive manufacturing a replacement portion including a plurality of cooling holes, and varying a surface roughness and a diameter of at least one cooling hole of the plurality of cooling holes during the forming by additive manufacturing the replacement portion. The replacement portion replaces the portion of the component.

公开(公告)号：US20180243866A1

公开(公告)日：2018-08-30

申请号：US15444934

申请日：2017-02-28

Applicant: General Electric Company

Inventor： Dheepa Srinivasan ,  Madhusudan Kulkarni

IPC: B23P6/00 ,  B22F3/00 ,  B22F7/06 ,  B33Y10/00 ,  B33Y50/02 ,  B22F5/04 ,  B23K26/342 ,  B23K26/03 ,  F01D5/00 ,  F01D5/12 ,  F01D9/04 ,  F01D25/24

CPC classification number: B23P6/007 ,  B22F3/008 ,  B22F5/04 ,  B22F7/062 ,  B22F2007/068 ,  B23K26/032 ,  B23K26/342 ,  B23K2101/001 ,  B23K2103/04 ,  B23K2103/05 ,  B23K2103/08 ,  B33Y10/00 ,  B33Y50/02 ,  F01D5/005 ,  F01D5/12 ,  F01D9/04 ,  F01D25/243 ,  F05D2220/31 ,  F05D2230/30 ,  F05D2230/80 ,  F05D2300/171 ,  F05D2300/177

Abstract: Various embodiments include approaches for repairing a turbine component. In some cases, a method includes: removing a turbine component from a turbine rotor assembly; identifying at least one flaw in the turbine component; and direct metal laser melting (DMLM) or direct metal laser depositing (DMLD) a fill material to fill the at least one flaw in the turbine component, forming a repaired turbine component.