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：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：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：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.