公开(公告)号：US12209500B2

公开(公告)日：2025-01-28

申请号：US18392391

申请日：2023-12-21

Applicant: Hyun Ki Kang ,  Sam Sub Byun ,  Jong Yeob Lee ,  Jae Wha Son ,  Taek Ho Chung

Inventor： Hyun Ki Kang ,  Sam Sub Byun ,  Jong Yeob Lee ,  Jae Wha Son ,  Taek Ho Chung

IPC: B23K9/04 ,  B22F5/00 ,  B22F10/25 ,  F01D11/08 ,  B22F10/28

Abstract: The present invention relates to a method for manufacturing a labyrinth seal using wire arc additive manufacturing, which is mounted between a diaphragm of a turbine and a turbine rotor to induce a smooth rotation of the turbine rotor and preventing gas leakage by minimizing friction between the diaphragm of a turbine and a turbine rotor when a rotating body such as the turbine rotor rotates inside a fixed body such as the diaphragm, and which includes a ring-shaped body part and a tooth part protruding on one side of the ring-shaped body part, wherein the labyrinth seal is deposition-manufactured by 3D printing, the body part is manufactured by the wire arc additive manufacturing, and the tooth part is manufactured by a directed energy deposition.

公开(公告)号：US20240183286A1

公开(公告)日：2024-06-06

申请号：US18371697

申请日：2023-09-22

Applicant: Hyun Ki Kang ,  Taek Ho CHUNG ,  Sam Sub BYUN ,  Jong Yeob LEE ,  Jae Wha SON ,  Kyeong Seung SHIN ,  Gi Joo YANG

Inventor： Hyun Ki Kang ,  Taek Ho CHUNG ,  Sam Sub BYUN ,  Jong Yeob LEE ,  Jae Wha SON ,  Kyeong Seung SHIN ,  Gi Joo YANG

IPC: F01D25/12 ,  B33Y40/00 ,  B33Y80/00

CPC classification number: F01D25/12 ,  B33Y40/00 ,  B33Y80/00 ,  B33Y10/00 ,  F05D2220/32 ,  F05D2230/31 ,  F05D2260/231

Abstract: The present invention relates to a method for manufacturing a gas turbine rotor heat shielding segment, which is mounted on a rotor outer wall between a compressor and a turbine and shields the leakage of heat and gas so that gas of high-temperature and high-pressure is not transferred from a burner of a gas turbine to a rotor shaft during the operation of the gas turbine, and more specifically, to a method for manufacturing a gas turbine rotor heat shielding segment by three-dimensional printing, wherein a portion having a simplified shape is manufactured by casting, and a portion having a complex shape is manufactured by 3D printing.

公开(公告)号：US20220324046A1

公开(公告)日：2022-10-13

申请号：US17672006

申请日：2022-02-15

Applicant: Hyun Ki KANG ,  Seok Yeong KANG ,  Sang Woo JO ,  Dong Kwan KIM ,  Young Ill AHN ,  Yun Jin KIM ,  Ha Yun SUNG

Inventor： Hyun Ki KANG ,  Seok Yeong KANG ,  Sang Woo JO ,  Dong Kwan KIM ,  Young Ill AHN ,  Yun Jin KIM ,  Ha Yun SUNG

IPC: B23K1/00 ,  B23K3/08 ,  B24C11/00

Abstract: The present invention relates to a method for manufacturing a core plug of a gas turbine vane, and more particularly to plan and design a core plug formation using brazing comprising: a first step of designing and planning a formation of a core plug; a second step of cutting a Hastelloy X plate according to the design of the core plug; a third step of fabricating a preform of the core plug; a fourth step of spot-welding a trailing edge; a fifth step of pasting a brazing filler; a sixth step of performing brazing heat treatment; a seventh step of performing grinding a brazed portion; an eighth step of performing a grit blasting.
According to the method for manufacturing a core plug of a gas turbine vane using brazing of the present invention above-mentioned, there is a significant effect of reducing manufacturing cost by in which the process is simple, and there is no deformation, shrinkages, cracks, and the like, in contrast with a conventional welding method.

公开(公告)号：US20240139808A1

公开(公告)日：2024-05-02

申请号：US18222644

申请日：2023-07-17

Applicant: Hyun Ki KANG ,  Sam Sub BYUN ,  Taek Ho CHUNG

Inventor： Hyun Ki KANG ,  Sam Sub BYUN ,  Taek Ho CHUNG

IPC: B22F5/00 ,  B22F10/28 ,  B22F10/50 ,  B33Y10/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/40

CPC classification number: B22F5/009 ,  B22F10/28 ,  B22F10/50 ,  B33Y10/00 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/40 ,  B22F2301/35 ,  B22F2998/10 ,  B22F2999/00

Abstract: The present invention relates to a method for manufacturing a labyrinth seal for a turbine through the additive manufacturing of martensitic stainless steel using 3D printing, the method including the steps of: making a ring-shaped body of the labyrinth seal by means of centrifugal casting or a ring mill and a labyrinth part protruding from one surface of the ring-shaped body of the labyrinth seal by means of the 3D printing; and depositing a bonding layer onto top of the ring-shaped body to improve a bonding force between the ring-shaped body and the labyrinth part, the bonding layer having a composition similar to the composition of the metal powder or metal wire used in the 3D printing.

公开(公告)号：US20240117749A1

公开(公告)日：2024-04-11

申请号：US18105405

申请日：2023-02-03

Applicant: Hyun Ki KANG ,  Taek Ho CHUNG ,  Sam Sub BYUN

Inventor： Hyun Ki KANG ,  Taek Ho CHUNG ,  Sam Sub BYUN

IPC: F01D11/02

CPC classification number: F01D11/02 ,  B33Y80/00 ,  F05D2230/21 ,  F05D2230/237 ,  F05D2300/171

Abstract: A method of manufacturing a labyrinth sealing device mounted between a diaphragm and a turbine rotor of a turbine to induce smooth rotation of the turbine rotor and prevent a leakage of gas by minimizing friction is presented. A labyrinth sealing device includes a ring-shaped body and a labyrinth part protruding from one surface of the ring-shaped body. The ring-shaped body is manufactured by centrifugal casting or ring mill, and the labyrinth part is manufactured by 3D printing.

公开(公告)号：US20210324760A1

公开(公告)日：2021-10-21

申请号：US17146811

申请日：2021-01-12

Applicant: Hyun Ki KANG ,  Tae Woo NOH ,  Sung Hoon JUNG ,  Ta Kwan WOO

Inventor： Hyun Ki KANG ,  Tae Woo NOH ,  Sung Hoon JUNG ,  Ta Kwan WOO

IPC: F01D25/00 ,  B08B3/08 ,  B08B9/00 ,  B08B15/00

Abstract: The present invention relates to a method for exhausting high concentrations of toxic gases generated during chemical stripping for high-temperature parts of a gas turbine, the method including the steps of: allowing a pair of openable/closable doors mounted on top of a tank whose top is open to accommodate a chemical substance therein to be closed during the chemical stripping so as to close top of the tank; collecting the toxic gases generated from the interior of the tank through hoods located at the inside of the tank; and exhausting the toxic gases to the outside through exhaust pipes mounted on the hoods or collecting the toxic gases to a separate storage tank.

公开(公告)号：US20240410290A1

公开(公告)日：2024-12-12

申请号：US18392391

申请日：2023-12-21

Applicant: Hyun Ki KANG ,  Sam Sub BYUN ,  Jong Yeob LEE ,  Jae Wha SON ,  Taek Ho CHUNG

Inventor： Hyun Ki KANG ,  Sam Sub BYUN ,  Jong Yeob LEE ,  Jae Wha SON ,  Taek Ho CHUNG

IPC: F01D11/08 ,  B23K9/04

Abstract: The present invention relates to a method for manufacturing a labyrinth seal using wire arc additive manufacturing, which is mounted between a diaphragm of a turbine and a turbine rotor to induce a smooth rotation of the turbine rotor and preventing gas leakage by minimizing friction between the diaphragm of a turbine and a turbine rotor when a rotating body such as the turbine rotor rotates inside a fixed body such as the diaphragm, and which includes a ring-shaped body part and a tooth part protruding on one side of the ring-shaped body part, wherein the labyrinth seal is deposition-manufactured by 3D printing, the body part is manufactured by the wire arc additive manufacturing, and the tooth part is manufactured by a directed energy deposition.

公开(公告)号：US20250033117A1

公开(公告)日：2025-01-30

申请号：US18778836

申请日：2024-07-19

Applicant: Hyun Ki KANG ,  Sam Sub BYUN ,  Jong Yeob LEE ,  Jae Wha SON

Inventor： Hyun Ki KANG ,  Sam Sub BYUN ,  Jong Yeob LEE ,  Jae Wha SON

IPC: B22F7/06 ,  B22F10/28 ,  B33Y10/00 ,  B33Y40/10 ,  B33Y70/00 ,  B33Y80/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42

Abstract: The present invention relates to a method for repairing a tooth of a labyrinth seal using 3D printing, the labyrinth seal consisting of an arch-shaped body and teeth protruding from the inner surface as one surface of the arch-shaped body, the method including the steps of: removing a damaged tooth from the body of the labyrinth seal; depositing a tooth onto the body by means of the 3D printing; and adjusting the surface roughness of the deposited tooth by means of machining.

公开(公告)号：US11927100B1

公开(公告)日：2024-03-12

申请号：US18105413

申请日：2023-02-03

Applicant: Hyun Ki Kang ,  Taek Ho Chung

Inventor： Hyun Ki Kang ,  Taek Ho Chung

IPC: B23P15/04 ,  F01D11/02 ,  B33Y80/00

CPC classification number: F01D11/02 ,  B33Y80/00 ,  F05D2230/21 ,  F05D2230/239

Abstract: The present invention relates to a method of manufacturing a labyrinth sealing device mounted between a diaphragm and a turbine rotor of a turbine in order to induce smooth rotation of the turbine rotor and prevent a leakage of gas by minimizing friction between a rotor, such as the turbine rotor, and a stator, such as the diaphragm, when the rotor rotates in the stator, wherein the labyrinth sealing device includes a ring-shaped body and a labyrinth part protruding from one surface of the ring-shaped body, the ring-shaped body is manufactured by centrifugal casting or ring mill, and the labyrinth part is manufactured by 3D printing.
The method of manufacturing a labyrinth sealing can improve productivity by reducing material costs and machining costs by manufacturing the labyrinth part (or teeth) protruding from the ring-shaped body using three-dimensional printing after manufacturing the ring-shaped body by centrifugal casting or ring mill. Moreover, the method of manufacturing a labyrinth sealing device can manufacture the labyrinth part in various shapes according to usage environments since the labyrinth part is manufactured by three-dimensional printing. Especially, the method of manufacturing a labyrinth sealing device can achieve microstructure, reduce fusion defects, and improve an adhesive force by bonding the labyrinth part on the body through vibration and far-infrared heating when the labyrinth part is stacked on the body.

公开(公告)号：US11434782B2

公开(公告)日：2022-09-06

申请号：US17146811

申请日：2021-01-12

Applicant: Hyun Ki Kang ,  Tae Woo Noh ,  Sung Hoon Jung ,  Ta Kwan Woo

Inventor： Hyun Ki Kang ,  Tae Woo Noh ,  Sung Hoon Jung ,  Ta Kwan Woo

IPC: F01D25/00 ,  B08B3/08 ,  B08B9/00 ,  B08B15/00

Abstract: The present invention relates to a method for exhausting high concentrations of toxic gases generated during chemical stripping for high-temperature parts of a gas turbine, the method including the steps of: allowing a pair of openable/closable doors mounted on top of a tank whose top is open to accommodate a chemical substance therein to be closed during the chemical stripping so as to close top of the tank; collecting the toxic gases generated from the interior of the tank through hoods located at the inside of the tank; and exhausting the toxic gases to the outside through exhaust pipes mounted on the hoods or collecting the toxic gases to a separate storage tank.