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1. 发明公开

US20240183286A1 METHOD FOR MANUFACTURING GAS TURBINE ROTOR HEAT SHIELDING SEGMENT BY THREE-DIMENSIONAL PRINTING 审中-公开
公开(公告)号：US20240183286A1
公开(公告)日：2024-06-06
申请号：US18371697
申请日：2023-09-22
申请人： Hyun Ki Kang , Taek Ho CHUNG , Sam Sub BYUN , Jong Yeob LEE , Jae Wha SON , Kyeong Seung SHIN , Gi Joo YANG
发明人： Hyun Ki Kang , Taek Ho CHUNG , Sam Sub BYUN , Jong Yeob LEE , Jae Wha SON , Kyeong Seung SHIN , Gi Joo YANG
IPC分类号： F01D25/12 , B33Y40/00 , B33Y80/00
CPC分类号： F01D25/12 , B33Y40/00 , B33Y80/00 , B33Y10/00 , F05D2220/32 , F05D2230/31 , F05D2260/231
摘要： 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.

2. 发明授权

US11927100B1 Method of manufacturing labyrinth sealing device using vibration and 3D printing 有权
公开(公告)号：US11927100B1
公开(公告)日：2024-03-12
申请号：US18105413
申请日：2023-02-03
申请人： Hyun Ki Kang , Taek Ho Chung
发明人： Hyun Ki Kang , Taek Ho Chung
IPC分类号： B23P15/04 , F01D11/02 , B33Y80/00
CPC分类号： F01D11/02 , B33Y80/00 , F05D2230/21 , F05D2230/239
摘要： 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.

3. 发明公开

US20240139808A1 METHOD FOR MANUFACTURING LABYRINTH SEAL FOR TURBINE THROUGH ADDITIVE MANUFACTURING OF MARTENSITIC STAINLESS STEEL USING 3D PRINTING 审中-公开
公开(公告)号：US20240139808A1
公开(公告)日：2024-05-02
申请号：US18222644
申请日：2023-07-17
申请人： Hyun Ki KANG , Sam Sub BYUN , Taek Ho CHUNG
发明人： Hyun Ki KANG , Sam Sub BYUN , Taek Ho CHUNG
IPC分类号： B22F5/00 , B22F10/28 , B22F10/50 , B33Y10/00 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/40
CPC分类号： B22F5/009 , B22F10/28 , B22F10/50 , B33Y10/00 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/40 , B22F2301/35 , B22F2998/10 , B22F2999/00
摘要： 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.

4. 发明公开

US20240117749A1 Method of manufacturing labyrinth sealing device for turbine using 3D printing 审中-公开
公开(公告)号：US20240117749A1
公开(公告)日：2024-04-11
申请号：US18105405
申请日：2023-02-03
申请人： Hyun Ki KANG , Taek Ho CHUNG , Sam Sub BYUN
发明人： Hyun Ki KANG , Taek Ho CHUNG , Sam Sub BYUN
IPC分类号： F01D11/02
CPC分类号： F01D11/02 , B33Y80/00 , F05D2230/21 , F05D2230/237 , F05D2300/171
摘要： 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.

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