公开(公告)号：US20190176273A1

公开(公告)日：2019-06-13

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 ,  F01D5/00 ,  F01D5/18 ,  B23K26/14 ,  B23K26/342

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：US20190048722A1

公开(公告)日：2019-02-14

申请号：US16056245

申请日：2018-08-08

Applicant: General Electric Company

Inventor： Dheepa SRINIVASAN ,  Joydeep PAL

IPC: F01D5/00 ,  F01D5/28 ,  F01D25/00 ,  B23P6/00 ,  B23K26/00 ,  B23K26/342

Abstract: Methods for treating components formed from equiaxed material(s) or directionally solidified structures and treated components are disclosed. The method may include machining a portion of the component, and direct metal laser depositing a material on the machined portion of the component to form a deposited, directionally solidified structure integral with the component. The deposited, directionally solidified structure may include columnar dendrites. Additionally, the treated component may include a body including a machined portion. The machined portion of the body may be formed substantially from an equiaxed material or a preexisting directionally solidified structure. The body of the component may also include a deposited, directionally solidified structure formed directly on the machined portion of the body. The deposited, directionally solidified structure may be direct metal laser deposited on the machined portion of the body.

公开(公告)号：US20190022803A1

公开(公告)日：2019-01-24

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 ,  B23K26/342 ,  F01D5/00

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：US20180345381A1

公开(公告)日：2018-12-06

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 ,  B22F3/105

CPC classification number: B22F3/1055 ,  B22F5/04 ,  B22F7/062 ,  B22F7/08 ,  B22F2007/068 ,  B23K26/342 ,  B23P6/005 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  C22C1/0433 ,  F01D5/005 ,  F01D5/28 ,  F05D2230/22 ,  F05D2230/232 ,  F05D2230/31 ,  F05D2240/122 ,  F05D2240/304 ,  F05D2300/131 ,  F05D2300/132 ,  F05D2300/175

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：US20180163548A1

公开(公告)日：2018-06-14

申请号：US15377304

申请日：2016-12-13

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Dheepa SRINIVASAN ,  James Ryan CONNOR ,  Joydeep PAL

IPC: F01D5/28 ,  C23C4/134 ,  C23C4/129 ,  C23C4/01 ,  C23C4/11 ,  C23C14/04 ,  C23C14/08 ,  C23C14/34 ,  C23C14/30 ,  C23C24/04 ,  F01D9/04 ,  F01D9/02 ,  F01D11/00 ,  F23R3/00 ,  F02C7/22

CPC classification number: F01D5/288 ,  C23C4/01 ,  C23C4/11 ,  C23C14/04 ,  C23C14/081 ,  C23C14/083 ,  C23C14/30 ,  C23C14/34 ,  C23C24/04 ,  F01D9/023 ,  F05D2230/312 ,  F05D2230/313 ,  F05D2230/90 ,  F05D2300/171 ,  F05D2300/177 ,  F23R3/002 ,  F23R2900/00019

Abstract: A method of selectively applying an overlay coating to a coated article and a selectively treated coated article are provided. The method includes the steps of providing the coated article having a treatment region that includes a bond coat and a thermal barrier coating and selectively applying an overlay coating to the treatment region without stripping the treatment region from the coated article. The bond coat of the coated article which has been exposed to an operational temperature includes a first volume fraction of a β-phase microstructure that is less than a second volume fraction of a β-phase microstructure of a comparable bond coat of a comparable article which has not been exposed to the operational temperature. A coated article including an overlay coating selectively applied over a treatment region is also disclosed.