公开(公告)号：US20210370589A1

公开(公告)日：2021-12-02

申请号：US17326710

申请日：2021-05-21

Applicant: General Electric Company

Inventor： Arunkumar Natarajan ,  Kwok Pong Chan ,  William C. Alberts ,  Vadim Bromberg

IPC: B29C64/165 ,  B29C64/40 ,  B29C64/264 ,  B33Y10/00 ,  B33Y70/10 ,  B33Y80/00

Abstract: A method of manufacturing comprises depositing a layer of a powder on a working surface and selectively depositing a water-based binder solution comprising from 0.1 wt % to 5 wt % of a non-aqueous solvent having a boiling point of greater than 100° C. and less than or equal to 175° C. at 1 atm and a thermoplastic binder comprises a first polymer strand including a first functional group and a second polymer strand including a second functional group into the layer of powder in a pattern representative of a structure of a part. The method further comprises non-covalently coupling the first and second polymer strands together via interaction between the first and second functional groups to form a green body part.

公开(公告)号：US20210370588A1

公开(公告)日：2021-12-02

申请号：US17326707

申请日：2021-05-21

Applicant: General Electric Company

Inventor： Arunkumar Natarajan ,  Joshua Tyler Mook ,  Kwok Pong Chan ,  William C. Alberts ,  Vadim Bromberg

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y70/10 ,  B33Y80/00 ,  C08K5/00 ,  C09B57/00

Abstract: A method of manufacturing a green body part comprises depositing a layer of a powder on a working surface; and selectively depositing a binder solution comprising a thermoplastic binder, a fluorescent material, and a binder medium into the layer of powder in a pattern representative of a structure of a layer of the green body part. The thermoplastic binder comprises one or more polymer strands dissolved in a solvent medium having an average molecular weight from greater than or equal to 7,000 g/mol to less than or equal to 100,000 g/mol. Binder solutions comprising fluorescent material and green body parts adhered together using the same are also disclosed.

公开(公告)号：US11000900B2

公开(公告)日：2021-05-11

申请号：US16891294

申请日：2020-06-03

Applicant: General Electric Company

Inventor： Ananda Barua ,  Sathyanarayanan Raghavan ,  Ken Salas Nobrega ,  Vadim Bromberg ,  Arunkumar Natarajan

IPC: B33Y10/00 ,  B29C64/379 ,  B29C64/165 ,  B28B1/00 ,  B22F10/00 ,  B33Y40/00 ,  B33Y80/00 ,  C04B35/622 ,  C04B35/634 ,  C04B35/638 ,  C04B35/64

Abstract: A method includes assembling a setter assembly onto a binder-jet printed part, wherein the setter assembly includes a base, a top setter, a bottom setter positioned between the base and the top setter, and a support pin extending between the base and the top setter having a terminus that abuts an inward facing surface of the top setter, such that at least portion of the binder-jet printed part is nested between the top setter and the bottom setter. The method includes heating the binder-jet printed part and the setter assembly to debind or sinter the binder-jet printed part, wherein a length of the support pin decreases in response to the heating to move the top setter toward the base.

公开(公告)号：US10940535B2

公开(公告)日：2021-03-09

申请号：US16003988

申请日：2018-06-08

Applicant: General Electric Company

Inventor： Ananda Barua ,  Sathyanarayanan Raghavan ,  Ken Salas Nobrega ,  Arunkumar Natarajan ,  Vadim Bromberg ,  Raymond Floyd Martell ,  Meghan J. Borz

IPC: B22F3/00 ,  B33Y10/00 ,  B33Y40/00 ,  B22F3/24 ,  B33Y80/00 ,  B28B1/00 ,  B28B11/24

Abstract: A binder jet printed article includes a part having a top portion, a bottom portion, and an overhang extending from the top portion and a support structure formed around the part that may block deformation of the part during post-printing thermal processing. The support structure includes a skid positioned adjacent to the bottom portion that may support the part, a first plurality of support features disposed along an outer perimeter of the skid, and a second plurality of support features disposed on the top portion of the printed part. The first and second plurality of support features form a lattice around the printed part such that the printed part is nested within the support structure.

公开(公告)号：US20190375006A1

公开(公告)日：2019-12-12

申请号：US16001565

申请日：2018-06-06

Applicant: General Electric Company

Inventor： Ananda Barua ,  Sathyanarayanan Raghavan ,  Ken Salas Nobrega ,  Vadim Bromberg ,  Arunkumar Natarajan

IPC: B22F3/00 ,  B33Y40/00 ,  B33Y80/00 ,  B33Y10/00 ,  B29C64/165 ,  B29C64/379 ,  B28B1/00 ,  C04B35/622 ,  C04B35/634 ,  C04B35/638 ,  C04B35/64

Abstract: A setter assembly for use in additive manufacturing a binder-jet part includes a base, a first setter component having a first setter portion and a second setter portion that may be removably coupled to the first setter portion and a plurality of protrusions disposed on and extending away from a surface of the base. The plurality of protrusions may align the base with the first setter component and enable coupling of the first setter component to the base. The setter assembly also includes a second setter component positioned between the base and the first setter component. The second setter component is disposed on the surface and the first setter component, the second setter component, and the base can be assembled onto a printed part such that at least a portion of the printed part is nested between the first setter component and the second setter component.

公开(公告)号：US20190054527A1

公开(公告)日：2019-02-21

申请号：US15680733

申请日：2017-08-18

Applicant: General Electric Company

Inventor： Arunkumar Natarajan ,  Carlos Bonilla Gonzalez ,  Kwok Pong Chan

IPC: B22F3/00 ,  B22F3/10 ,  B33Y10/00 ,  B33Y70/00

Abstract: A method of binder jet printing a part including depositing a layer of a powder on a working surface of a binder jet printer and selectively printing a binder solution having a linkable thermoplastic binder into the layer of the powder in a pattern to generate a printed layer. The pattern is representative of a structure of a layer of the part. The linkable thermoplastic binder includes a first polymer strand and a second polymer strand, the first polymer strand includes a first functional group and the second polymer strand includes a second functional group, and the first and second functional groups non-covalently couple the first polymer strand with the second polymer strand. The method of binder jet printing a part also includes curing the linkable thermoplastic binder in the printed layer to generate a layer of a green body part, heating the green body part above a first temperature to remove at least a portion of the linkable thermoplastic 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. The part is substantially free of char residue.

公开(公告)号：US10101322B2

公开(公告)日：2018-10-16

申请号：US14621715

申请日：2015-02-13

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Arunkumar Natarajan ,  Anup Sood ,  Lakshmi Sireesha Kaanumalle ,  Christina Lowes

IPC: G01N33/536 ,  G01N33/58 ,  G01N21/64 ,  G01N1/30

Abstract: Methods comprising the use of photoactivated chemical bleaching for detecting multiple targets in a biological sample are provided. The methods include the steps of providing a biological sample containing multiple targets, binding at least one probe to one or more target present in the sample, and observing a signal from the probe. The method further includes the steps of contacting the sample comprising the bound probe with a cationic or zwitterionic borate compound and irradiating the sample, thereby initiating a photoreaction that substantially inactivates the probe by photoactivated chemical bleaching. The method further includes the steps of binding at least one probe to one or more target present in the sample, and observing a signal from the probe. The process of binding, observing and bleaching may be iteratively repeated.

公开(公告)号：US20180272572A1

公开(公告)日：2018-09-27

申请号：US15469680

申请日：2017-03-27

Applicant: General Electric Company

Inventor： Stephen Bertram Johnson ,  Xiomara Irizarry-Rosado ,  Arunkumar Natarajan

IPC: B29C41/00 ,  F03D1/06 ,  B29C41/20 ,  B29C70/22 ,  B29C70/30

CPC classification number: B29C41/003 ,  B29C41/20 ,  B29C70/22 ,  B29C70/30 ,  B29D99/0025 ,  B29K2105/0032 ,  B29K2995/0018 ,  B29L2031/085 ,  F03D1/0675 ,  F05B2230/90 ,  F05B2240/99 ,  F05B2280/6001 ,  F05B2280/6003 ,  F05B2280/6011 ,  Y02E10/721 ,  Y02P70/523

Abstract: The present subject matter is directed to methods for manufacturing rotor blades and/or components thereof of a wind turbine. In one embodiment, the method includes forming the rotor blade component and covering at least a portion of the rotor blade component with at least one coating material. In addition, the coating material includes at least one additive having a changeable pigment. After the component is formed, the method includes inspecting the rotor blade component for defects. After inspection, the method further includes activating the additive to change the pigment from a transparent finish to a colored finish.

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：US20180071820A1

公开(公告)日：2018-03-15

申请号：US15261547

申请日：2016-09-09

Applicant: General Electric Company

Inventor： Arunkumar Natarajan ,  Rajendra Madhukar Kelkar ,  Jeffrey Jon Schoonover ,  Prabhjot Singh ,  Venkat Subramaniam Venkataramani ,  Kwok Pong Chan ,  John Leman

IPC: B22F3/10 ,  B22F1/00 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y80/00 ,  C09D133/12 ,  C09D125/06 ,  C09D169/00 ,  C09D129/04

CPC classification number: B22F3/1021 ,  B22F1/0062 ,  B22F3/008 ,  B22F2998/10 ,  B33Y10/00 ,  B33Y80/00 ,  C09D129/04 ,  C09D133/12

Abstract: A method of binder jet printing a metal part includes depositing a layer of a metal powder on a working surface of a binder jet printer and selectively printing a binder solution having a reversible binder into the layer of metal powder in a pattern to generate a printed layer. The pattern is representative of a structure of a layer of the metal part. The method also includes curing the reversible binder in the printed layer to generate a layer of a green body metal part and heating the green body metal part above a first temperature to remove a substantial portion of the reversible binder and generate a brown body metal part. The reversible binder is thermally decomposed to generate oligomers that remain within and strengthen the brown body metal part. The method further includes heating the brown body metal part above a second temperature to remove the oligomers and sinter the metal powder to generate the metal part. The metal part is substantially free of char residue.