METHOD FOR MANUFACTURING A TURBOMACHINE COMPONENT WITH A PARTING JOINT, AND A STEAM TURBINE COMPRISING SAID TURBOMACHINE COMPONENT

The turbomachine component comprises two sub-components (4, 5) that are separated by a parting joint (3) and each comprise a sealing surface at the parting joint, where one of the two sealing surfaces: is convex to form a linear contact of the two sealing surfaces; and has a coating, applied on the...

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1. Verfasser: SCHÜRHOFF, JÖRG
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:The turbomachine component comprises two sub-components (4, 5) that are separated by a parting joint (3) and each comprise a sealing surface at the parting joint, where one of the two sealing surfaces: is convex to form a linear contact of the two sealing surfaces; and has a coating, applied on the sealing surfaces, which comprises a hard material having a thickness of maximum 30 mu m and is applied using a vapor deposition method, or a coating, which comprises a chrome-containing alloy having a thickness of maximum 30 mu m and is applied by a vapor deposition method. The turbomachine component comprises two sub-components (4, 5) that are separated by a parting joint (3) and each comprise a sealing surface at the parting joint, where one of the two sealing surfaces: is convex to form a linear contact of the two sealing surfaces; and has a coating, applied on the sealing surfaces, which comprises a hard material having a thickness of maximum 30 mu m and is applied using a vapor deposition method, or a coating, which comprises a chrome-containing alloy having a thickness of maximum 30 mu m and is applied by a vapor deposition method or having a thickness of maximum 300 mu m and applied using a thermal spraying method. The coating applied by the thermal spraying method comprises particles of an additional hard material (70-80 mass%). The particle is a ceramic particle. The thermal spraying method includes high-velocity flame spraying method, and cold spraying or detonation spraying method. The vapor deposition method includes physical vapor deposition method or chemical vapor deposition method. An independent claim is included for a steam turbine.