Turbomachine component with a parting joint, and a steam turbine comprising said turbomachine component
AssigneeSiemens Aktiengesellschaft
InventorJorg Schurhoff
Life of this patent
Estimating the term…
Abstract
A turbomachine component is provided having at least two sub-components that are separated by a parting joint and each have a sealing surface at the parting joint, at least one of the two sealing surfaces being convex in order to form a linear contact of the two sealing surfaces. At least one of the sealing surfaces has a coating on it which includes a hard material, is a maximum of 30 μm thick and is applied using a vapour deposition method, or a coating which includes a chrome-containing alloy, is a maximum of 30 μm thick and is applied by a vapour deposition method, or is a maximum of 300 μm thick and applied using a thermal spraying method.
Claims17
A turbomachine component, comprising:
- at least two sub-components which are separated by means of a parting joint and have in each case a sealing surface at the parting joint,
- wherein at least one of the two sealing surfaces is crowned, so as to form a linear contact between the two sealing surfaces, and
- wherein at least one of the sealing surfaces is provided with a coating which has a hard material, is at most 30 μm thick and which is applied by a gas phase deposition method, or a coating which has a chromium-containing alloy, which is at most 30 μm thick and is applied by a gas phase deposition method or which is at most 300 μm thick and is applied by a thermal spraying method,
- wherein the coating is formed such that it is not porous.
Dependencies are inferred from the claim text.