Method of forming high-temperature components and components formed thereby
June 10, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3647316 Method of forming a composite structure Method of fabricating composite structures for water cooled gas turbine components Products made by powder metallurgy and a method therefore Method of creating a controlled interior surface configuration of passages within a substrate Process for fabricating integrally bladed bimetallic rotors Fiber-composite turbine blade and method for its construction Method of forming a metal article from powdered metal Powder forging of hollow articles Method for providing an extension on an end of an article and extended article InventorsApplicationNo. 329625 filed on 06/10/1999US Classes:428/548, Composite; i.e., plural, adjacent, spatially distinct metal components (e.g., layers, etc.)416/95WITH HEATING, COOLING OR THERMAL INSULATION MEANSExaminersPrimary: Mai, NgoclanAttorney, Agent or FirmInternational ClassB22F 007/02AbstractA method for forming an exterior surface of a high-temperature component, such as a blade or vane of a gas turbine engine. The method entails forming a shell by a powder metallurgy technique that yields an airfoil whose composition can be readily tailored for the particular service conditions of the component. The method generally entails providing a pair of inner and outer mold members that form a cavity therebetween. One or more powders and any desired reinforcement material are then placed in the cavity and then consolidated at an elevated temperature and pressure in a non-oxidizing atmosphere. Thereafter, at least the outer mold member is removed to expose the consolidated powder structure. By appropriately shaping the mold members to tailor the shape of the cavity, the consolidated powder structure has the desired shape for the exterior shell of a component, such that subsequent processing of the component does not require substantially altering the configuration of the exterior shell. The airfoil can be produced as a free-standing article or produced directly on a mandrel that subsequently forms the interior structure of the component. In one embodiment, an airfoil is configured to have double walls through which cooling air flows.Other References
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